Java jobs

I’m looking to extend the standard javac pipeline so that selected compile-time transformations flow seamlessly into runtime-level optimizations. The sole objective is measurable performance gains, and the hot spot I need addressed is the handling of function calls. Here’s the current thinking: • During compilation I want to inject bytecode-level hints or re-write patterns that the JVM’s JIT can exploit immediately at runtime. • The focus is on aggressive inlining, de-virtualization, and any other call-site refinement that reduces dispatch overhead without breaking portability. • I expect clear before-and-after benchmarks (micro-benchmarks are fine) proving the speed-up on a standard HotSpot JVM. Please bring practical experience with javac plugins...

I need a small Pine Script add-on (or even Java script) that looks at and recognize the text printed on the PREVIOUS candle of any TradingView chart, checks whether it contains the keywords “Buy” or “Sell”, and—if it does—immediately fires a webhook alert. Scope • Keyword detection only; no pattern recognition or number extraction involved. • Target words: “Buy” and “Sell”. The alert should trigger whenever either word is found, nothing else. • The scan must reference the candle that has just closed, so the alert goes out in real time for the next bar. • Webhook payload and URL should be easy for me to edit in the script parameters. Deliverable A single, commented Pine Script file that I can ...

Our AI-driven MVP is already live on a Java Spring Boot back end with a Node.js front end. It performs well, but a few stubborn bugs remain and, more importantly, the product now needs a robust analytics extension: weekly sales and revenue reports available from the admin dashboard. Work will focus on two areas: • Bug fixing – Triage and resolve the open issues currently tracked in our Git repository. – Refactor only where necessary to keep the codebase clean and maintainable. • Feature addition: advanced analytics – Capture the relevant transactional data streams. – Generate and store weekly sales & revenue reports. – Expose these reports via a secure REST endpoint and a simple dashboard widget. – Include ...

I urgently need access to mature, production-level applications written in any of the following stacks: COBOL, Fortran, legacy .NET Framework, Java 7 or earlier, C/C++, VB6, or RPG. The ideal submission is a sizeable, real-world system complete with the workflows, modules, and history that typically power enterprises. What I’m specifically after is the full codebase (a Git repo, Subversion dump, or even a zipped archive) plus whatever SDLC artefacts you still have—requirements specs, architecture or design diagrams, test plans, deployment scripts, user manuals, change logs, database schemas, the works. The richer and more authentic the collateral, the better. Priority goes to projects that were genuinely in production and exceed the typical “toy” size, so l...

...analytics tracking, configuring deployment pipelines, and ensuring cross-browser compatibility across Chrome, Firefox, Safari, and Edge. Required skills include JavaScript (ES6+), React.js, HTML5, CSS3, TailwindCSS or SCSS, API integration experience, Git/GitHub workflow knowledge, responsive web development, and backend experience with technologies such as Node.js, , Laravel, Python, or Java. The final product should achieve strong Google Lighthouse scores (90+ for performance and accessibility), provide smooth user experiences on desktop and mobile devices, and deliver reliable lead tracking into the CRM pipeline. We are open to freelancers, contract-based developers, or long-term collaboration opportunities. Please include your portfolio, GitHub profile, relevant corporate ...

I need an experienced Adobe Experience Manager developer who also feels at home inside the AWS console to hunt down and resolve a code error that appears at the integration layer between the two platforms. The symptom: emails that should be dispatched in real time from AEM are failing, logs are incomplete, error reports are patchy, and...responsible for mailing, logging, and credential handling. 2. Patch the bug, following AEM best practices and AWS security guidelines. 3. Provide clean, commented code plus a concise changelog. 4. Verify in my that real-time email delivery, logging, and error reporting all work as expected with credentials secured and none of the existing features break Tech stack you will touch: AEM 6.x, Java/Sling, AWS SDK, CloudWatch, SES (for email), M...

...shared Integrated into the same app, the audio live-streaming module should provide: • Live chat layered on top of each stream for instant audience engagement • Automatic recording of every broadcast with on-demand playback in a dedicated library • Optional user subscriptions so creators can lock premium streams behind monthly plans Core expectations • Fully native Android code (Kotlin or Java) with clean architecture, MVVM preferred • Scalable backend for authentication, messaging and streaming—Firebase, AWS or a comparable stack is fine as long as latency stays low • Secure payment flow for subscriptions (Google Play Billing) • Push notifications, basic analytics hooks and an admin dashboard for content moderation De...

I’m starting a brand-new mobile application and need an experienced Android developer to take it from concept to a polished release on Google Play. At this stage I have the core idea and feature set sketched out; what I’m missing is the technical expertise to design the architecture, code the app, and guide me through testing and launch. Here’s what I’m after: • A native Android build (Java / Kotlin) that follows current Material Design guidelines. • Clean, well-commented source code stored in a private Git repo and an installable APK for each milestone. • Basic analytics and crash reporting integrated so we can track usage from day one. I’ll handle graphics and copy, so you can focus on UX flow, backend hooks (if any), and making...

...resolve breaking changes Refactor code where needed to support Spring Boot 4.0 compatibility Review and update AWS infrastructure code using AWS CDK (TypeScript) Create or modify AWS resources and deployment pipelines Troubleshoot build, deployment, and runtime issues Perform testing and validation after migration Document migration steps and changes made Required Skills: Strong experience with Java and Spring Boot Hands-on experience migrating Spring Boot applications across versions Strong knowledge of Spring ecosystem: Spring Security Spring Data REST APIs Maven/Gradle Experience with AWS CDK using TypeScript Good understanding of AWS services such as: EC2 Lambda ECS/EKS (if applicable) S3 RDS IAM Dynamo db CloudWatch API Gateway SQS,SNS,eventbridge Experience with CI/CD pip...

I have an existing Java codebase that should compile and run, but the Maven configuration and build-path settings are not wired correctly. I need someone to jump in, open the project in the IDE of your choice, review the , add or correct any missing dependencies, and designate the proper main class so the application starts with a simple mvn clean install && mvn exec:java (or the equivalent Run button). What you will do for me • Inspect and fix the so every external library resolves from Maven Central without manual jar drops. • Configure the IDE build path so no red-line errors remain and the project launches from the designated Main class. • Document the exact steps you take—just enough that I can repeat them on another machine. A short README or...

I’m putting together a roster of trainers who can confidently teach intermediate-level programming courses in Python, Java and JavaScript. The learners already know the basics; they need guidance into topics such as object-oriented design, asynchronous programming, testing, performance tuning and real-world project structure. You will deliver live online sessions (we use Zoom and record each class), walk the group through hands-on coding exercises, and provide concise learning materials that students can revisit afterward. I’ll supply a template for slide branding and a rough outline of learning outcomes—everything else, from detailed syllabus to lab scripts and assessment questions, will come from your expertise. Key deliverables • Course outline correspond...

...comprehensive service includes:Custom app developmentNative and cross-platform solutionsSecond platform app developmentUI/UX designConsulting and prototypingAutomated QA and testingPower managementNotification and geofencingEmbedded Android customizationsMaintenancePost-warranty supportWe use the latest technologies to produce fully-fledged, stable, and scalable mobile applications, including Kotlin, Java, React Native, Flutter, .NET, SQL Server, Azure DevOps, and provide the first week of onboarding at no cost and all our packages can be customized to meet your specific us today to learn more about how we can help you build a cutting-edge, customized solution for your business....

...with industry-standard encryption and session handling, keeping the flow snappy and intuitive for Turkish-speaking users. While the main brief is lean, I’m happy to explore additional features or third-party services you feel would enhance conversion or retention, so long as the core workflow (browse, add to cart, check out) remains frictionless. Deliverables: • Native Android codebase (Kotlin or Java) • Email/password sign-up, login, and password-reset screens fully wired to a secure API • Production APK plus signed release bundle • Read-me or brief technical documentation explaining build steps, key libraries, and how to extend the auth module Please keep performance, clean architecture, and localisation in mind from day one, and feel free to ...

I urgently need access to full-source, enterprise-grade applications written in any of the following legacy stacks: COBOL, Fortran, classic .NET Framework, Java 7 or earlier, C/C++, VB6, or RPG. My immediate focus is on large-scale production systems that originally ran on Windows and supported real-world healthcare workflows. If you have old repositories, archived ZIPs, or any other form of packaged source that fit this profile, I’m interested in acquiring them along with whatever SDLC assets you still possess—architecture docs, user manuals, test suites, deployment or build scripts, anything that helps demonstrate the project’s production pedigree. Please outline: • Language and version used • Original deployment details (Windows server specs, DB, m...

...codebase. At this stage the core concept is clear, but I’m still refining specific screens and user journeys, so I value someone comfortable collaborating on technical architecture, UI flow and best-practice deployment. Here’s what I’m looking for: • End-to-end development for iOS and Android, including App Store and Google Play submission. • Clean, maintainable code (Swift/Objective-C or Kotlin/Java, or a modern cross-platform stack such as Flutter or React Native). • Guidance on choosing the right mobile framework, cloud backend and analytics tools. • Basic CI/CD setup so future updates are painless. • Clear communication, regular builds for testing, and concise documentation for hand-off. If you have a track record of shippi...

I need an Android-only social media app built from the ground up. The core idea is a clean, modern platform where users can sign up, create a profile, share posts, and interact through likes, comments, and direct messages. Here’s what I’m aiming for: • Native Android development (Kotlin or Java, Android Studio) • Google-style sign-in plus basic email/password registration • Scrollable home feed with text, image, and short-video posts • Real-time messaging using Firebase or a comparable service • Push notifications for follows, likes, comments, and messages • Basic profile editing (avatar, bio, links) • Simple admin console so I can moderate content and users Please handle the UI/UX with Material Design guidelines in ...

Deploying a suite of Claude-generated web applications on Google Cloud is the next milestone. The codebase spans Python/Django for core services, a JavaScript/React front-end, and several Java/Spring components. What remains is a rock-solid, automated path to production that meets SOC 2 Type II and HIPAA requirements, plus complementary security hardening. Scope of work • Build (or refine) an end-to-end CI/CD pipeline on Google Cloud services—Cloud Build, Artifact Registry, and Cloud Run/GKE are all acceptable as long as images are signed and provenance is tracked. • Implement infrastructure-as-code so environments are reproducible; Terraform or Google Deployment Manager are fine. • Apply Google Cloud best practices for IAM, VPC Service Controls, CMEK, lo...

Project Title: Senior Java Developer Required for Legacy Government Project (Qatar-Based Company) Project Description: We are looking for an experienced Java developer to work on a legacy enterprise application for a Qatar-based government is a custom-built enterprise solution currently under maintenance and enhancement phase. This is not a modern plug-and-play setup. The project is built on older Java technologies and requires someone who has hands-on experience working with legacy systems, manual configurations, and enterprise-level custom implementations. Required Skills & Experience: - Strong experience in Core Java and J2EE - Experience working with older Java versions such as Java 1.7 - Good understanding of legacy enterprise applic...

...planned, so keep any Google Play Services dependencies out of the project. • One-time action: once the SMS is successfully delivered, nothing else should happen in the background. • The whole flow must be invisible to the user—no UI prompts, no notifications, and no battery-hungry background services. Deliverables • Signed release APK ready for direct distribution. • Complete Android Studio project (Java or Kotlin) with clear instructions so I can change the short-code or message later if needed. • Quick test report or video proving that, immediately after installation, the SMS reaches the destination and no Play Protect warning appears. Acceptance criteria The build will be considered complete once I install the APK on a clean device, watch the p...

...familiar Controller-Service-Repository style so future feature work remains straightforward. Unit tests for the limiter and security filters are expected, and a short README explaining local setup, Redis clustering tips, and how to adjust the throttle thresholds will round out the delivery. Success means the gateway consistently forwards requests, blocks offenders, and ships with clean, readable Java 17 code that drops straight into my existing microservice environment....

I want to launch a lightweight productivity app that focuses exclusively on intuitive, distraction-free note-taking for Android phones and tablets. The goal is to let users capture ideas quickly, organise them with tags or folders, and access everything instantly through a fast in-app search. Core scope • Native Android development (Kotlin is preferred, Java is acceptable) • Clean Material 3 UI with dark/light themes • Create, edit, delete and organise notes (text, basic rich-text formatting) • Local storage with optional automatic cloud sync (Google Drive) • Robust search and filtering by keyword and tag • Simple onboarding screen and settings (backup, theme, font size) Deliverables 1. Signed release-ready APK plus Google Play Store bun...

I’m building a sandbox-style proprietary options...switch; no cloud dependencies, everything must resolve locally over the LAN. • Clear instructions or scripts for deployment, plus a simple dashboard that lets the team start, stop, and monitor algos, review order logs, and download session reports. * Net Postions per node / Total equivalent position management etc PLEASE REIVEW THE .PDF FILE If you have existing libraries in Python, Node, or Java that already speak to Zerodha’s Kite API, even better—just make sure they compile and run cleanly behind our firewall. I’ll consider the project complete when we can fire off an options strategy from any node, see it executed in the sandbox with correct market feedback, and flip it into reverse mode on dema...

...and logical errors in code outputs Provide structured, high-quality technical feedback to improve AI systems Define coding standards and benchmark evaluation criteria Document insights, findings, and improvement recommendations Stay updated with modern programming practices and technologies Required Skills Strong experience in one or more of the following: Python (required strong proficiency) Java / C++ / Go / Rust JavaScript / TypeScript React.js / Node.js .NET / PHP HTML / CSS / Angular Core requirements: Strong understanding of Data Structures and Algorithms Experience in debugging, code review, and optimization Ability to write clean, efficient, production-ready code Strong written communication for technical explanation Attention to detail and analytical problem-solving ...

...notifications, and see everything in a consolidated calendar view. • Task assignment – a simple interface to create, assign, reassign, and track task status, with role-based visibility. • Reporting & analytics – exportable summaries and at-a-glance dashboards that show completed vs. pending work, overdue items, and basic productivity metrics. Core requirements – Native Android build (Kotlin or Java in Android Studio). – Local data persistence with optional cloud sync (Firebase, SQLite, or a solution you propose). – Modern Material 3 UI so the app feels intuitive from first launch. – Source-controlled code (Git) and clear, developer-level documentation. Acceptance criteria 1. APK runs smoothly on Android 10+. 2....

...search relevance, linguistic validation, and technical content moderation. Proven ability to interpret complex guidelines and maintain high quality-score metrics. ​CORE COMPETENCIES ​Data Annotation: Image classification, sentiment analysis, and entity linking. ​Linguistic Services: Professional French-to-English translation and localization. ​Technical Evaluation: Code snippet validation (Python, Java) and STEM-based fact-checking. ​Precision: Specialized in identifying edge cases in datasets. ​PROFESSIONAL EXPERIENCE ​Information Manager & French Translator | Global Athletic Consulting 2022 – Present ​Manage and audit high-integrity datasets for international athletes. ​Perform real-time translation of technical and administrative documentation from French to Engl...

My current résumé is cluttered, dated, and failing most ATS filters. I need it reorganised into a clean, one-to-two-page document that instantly positions me as a strong on-site software developer within the technology sector. The content already exists; what I lack is sharp wording, logical flow, and the right balance of technical depth (Java, Python, Git, AWS) and measurable achievements. Once the résumé is tightened, I also want proactive guidance on uncovering suitable openings. That includes identifying companies hiring for in-office developer positions, refining keywords for job boards, and shaping an adaptable cover-letter template I can tweak quickly for each posting. Deliverables • A polished, ATS-friendly résumé in both PDF ...

...charts yet, please structure the data layer so that adding historical analytics later won’t be painful. UI expectations • One-touch buy/sell, lot size selector, and a concise ticket summary. • An uncluttered dashboard that shows open trades, free margin and balance at a glance. • Material-design guidelines are preferred so the look stays native to Android. Accepted tech stack Kotlin or Java in Android Studio with an MVVM pattern is ideal. Feel free to suggest a different but equally maintainable architecture if it speeds development. Deliverables • Full Android Studio project with well-commented source code • Working APK for testing on Android 10+ devices • Brief README explaining API keys, build steps and how to switch environ...

...production-ready Android mobile application. I will provide the functional outline, branding assets, and any existing API documentation; you will take the idea from wireframe through Google Play release, handling every layer of the stack. Scope • Design a clean, intuitive Material-inspired UI that adapts smoothly across common screen sizes. • Develop the Android front-end in Kotlin (preferred) or Java, using the latest stable SDK, Jetpack libraries, and Android Studio. • Architect and implement the back-end—RESTful API, database schema, user authentication, and cloud deployment—so the app runs fast and scales easily. • Integrate push notifications, basic analytics, and secure in-app data storage. • Configure CI/CD for streamlined futu...

...comprehensive service includes:Custom app developmentNative and cross-platform solutionsSecond platform app developmentUI/UX designConsulting and prototypingAutomated QA and testingPower managementNotification and geofencingEmbedded Android customizationsMaintenancePost-warranty supportWe use the latest technologies to produce fully-fledged, stable, and scalable mobile applications, including Kotlin, Java, React Native, Flutter, .NET, SQL Server, Azure DevOps, and provide the first week of onboarding at no cost and all our packages can be customized to meet your specific us today to learn more about how we can help you build a cutting-edge, customized solution for your business....

I need a full-stack Java 17 solution that powers a small food-delivery style platform. The back end must expose secure REST APIs built with Spring Boot 3.x and Spring Security. Users will authenticate with a straightforward email-and-password flow and receive role-based access; start with the Customer role and its dashboard, then expand to Restaurant, Delivery and Admin sections as the project matures. The very first screens a user should see are the responsive Customer pages—searching restaurants, placing orders, viewing order history and tracking deliveries in real time. On the Restaurant side the critical feature is catalog / menu management; other functions such as order placement or order history can follow once the menu tools are solid. While coding, keep the following...

...Software Engineering roles AI/ML model evaluation or benchmarking Large-scale backend systems LLM evaluation frameworks Continuous Integration / Continuous Deployment (CI/CD) Automated testing frameworks Open-source contributions Security engineering experience Distributed systems architecture Cloud infrastructure (AWS, GCP, Azure) Additional programming languages: JavaScript / TypeScript Go C++ Java Rust Ideal Candidate You may be an excellent fit if you: Have built and maintained production-grade software systems Enjoy analyzing complex engineering problems Have experience reviewing large codebases Understand software quality, testing, and reliability principles Can identify subtle bugs and edge cases Have worked in high-performance engineering environments Are interested in ...

...Validating models against observed or client-provided operational data Producing outputs including occupancy curves, throughput rates, and staff utilisation for client-facing documents Working iteratively with the UrbanID analytics team throughout each engagement Requirements Hands-on experience building agent-based or discrete event simulation models in AnyLogic (non-negotiable) Proficiency in Java for custom agent logic within AnyLogic Experience working from architectural floor plans and spatial data, not only process diagrams Ability to translate real-world operational briefs into simulation parameters and agent behaviours Strong communication skills: able to explain model logic and outputs to non-specialist clients Available during Australian Eastern business hours (AEST/A...

...require email registration or guest access. Core flow • User signs in with their social account, pastes or shares a post URL, taps Download, and the file saves to local storage in its native quality. • The app should automatically detect whether the link points to an image, video, carousel, or Reel and grab the appropriate media files. Technical expectations • Native Android build in Kotlin or Java, compiled in Android Studio with minSdk 21 or below if feasible. • Solid background-download handling, progress indication, and graceful failure messaging (e.g., when a private post is supplied). • Clean, modular code so I can extend to more networks later. • Follow each network’s publicly allowed scraping/downloading guidelines to avoid ...

I already have a whimsical carnival district taking shape on my Minecraft Java server; now I need those grounds to feel alive by weaving a block of standard apartments into the build. The rides, stalls, and color-splashed pathways are in place, but what’s missing is a believable residential wing where carnival workers and visitors could “live.” Here’s what I’m after: a modest-scale apartment structure that harmonises with the existing fantasy aesthetic without looking too lavish or too bare-bones. Each unit should include a basic furniture setup—beds, storage, seating, simple lighting—so players can move in immediately. No elaborate redstone contraptions or high-end luxury suites are required; I just need solid, well-laid-out rooms that f...

...detail-oriented QA Automation/Manual Tester to thoroughly test a backend product service. The service is built using Java and the Spring Framework. The primary goal of this project is not just surface-level testing, but a deep, exhaustive validation of the service's logic. You will be given access to the codebase, and you are expected to read and analyze the code to uncover edge cases, hidden assumptions, and potential failure points. Testing will be conducted entirely via Postman. The service consists of a total of 64 endpoints that need full coverage: POST: 5 GET: 39 PUT: 15 DELETE: 5 Key Responsibilities & Requirements: 1) Code-Driven Test Creation: You must read the Java/Spring source code to understand the business logic, validation rules, error handling...

...charts yet, please structure the data layer so that adding historical analytics later won’t be painful. UI expectations • One-touch buy/sell, lot size selector, and a concise ticket summary. • An uncluttered dashboard that shows open trades, free margin and balance at a glance. • Material-design guidelines are preferred so the look stays native to Android. Accepted tech stack Kotlin or Java in Android Studio with an MVVM pattern is ideal. Feel free to suggest a different but equally maintainable architecture if it speeds development. Deliverables • Full Android Studio project with well-commented source code • Working APK for testing on Android 10+ devices • Brief README explaining API keys, build steps and how to switch environ...

I like to connect with individual who can work on assignment and deliver the project on timely manner using technologies like, spring boot, java etc. Please connect and share your profile with delivered assignment or Git code

need to log random messages in a txt file in background with date and time stamp, keep appending in new line must run only in background. without any notification need to use Android Studio and Java. Not Kotlin

I’m gearing up for interviews at top-tier tech companies and need a seasoned mock-interviewer to help me sharpen my skills. We will connect for a live, 60-minute video call where you select medium-level LeetCode problems in Java that test classic data-structure and algorithm concepts. During the session you’ll act exactly as an interviewer would: present the question, clarify constraints, watch me code, and probe my thought process. When time is up I’d like concise, actionable feedback focused on my problem-solving approach—how I break the problem down, communicate trade-offs, and arrive at a solution. (I’m not looking for deep code-efficiency critiques yet; the emphasis is on approach.) If the first interview feels realistic and your feedback is i...

I want to launch a brand-new e-commerce Android app but I’m still open on the concept itself. Your first task is to pitch a compelling idea—everyt...shopping journey. • Development: Build the Android app, integrating standard e-commerce essentials—catalogue, cart, secure checkout and user accounts—while keeping the codebase clean and well-documented. • Handover: Deliver the full Android Studio project, compiled APK and a brief deployment guide. Feel free to suggest frameworks, libraries or payment gateways you are comfortable with (Kotlin, Java, Flutter, Firebase, Stripe, etc.) as long as the final build performs smoothly on the latest Android versions. I value clear communication and incremental milestones, so let’s start with your stro...

This project includes the complete development of a professional digital solution for Phasepro, combining creative media, web application development, and search engine optimization services. The scope of work includes: High-quality 3D animated video production for branding and promotional purposes Development parts of a custom Java-based web application with responsive and user-friendly functionality SEO optimization to improve online visibility, search rankings, and digital reach The objective is to deliver a modern, scalable, and performance-driven solution that enhances the brand presence and supports business growth.

...• Real-time duet capability so two remote singers can perform together without noticeable latency. • Live streaming so performers can broadcast sessions to an in-app audience. Social reach is essential, so finished recordings and live sessions must publish seamlessly to Facebook, Instagram, and Twitter from within the app. I expect a polished Android build plus clean, well-documented Kotlin/Java source code, an accompanying backend (Firebase or similar real-time service), and a small admin dashboard for content moderation and user management. Please ensure audio processing is smooth on mid-range devices and that the UI feels modern and intuitive. When you propose, let me know: – Your preferred tech stack for low-latency audio and live streaming – Any ...

...management, Java, database administration, and cloud services. Project Deliverables Server Deployment: Hybrid database approach Distributed Cluster We must separate: Edge Layer (Ingress + WebSocket) Application Layer (Spring Boot Core) Stateful Data Layer (Cassandra, PostgreSQL, Redis) Media + Search + Observability WebRTC Stack • Infrastructure: Are you planning to deploy on a our server • Version: need the latest official Signal Server (Java-based) • Customization : rebrand the app or simply run a private instance Configuration & Customization: Set up config .yml for production Optional branding or private instance configuration ________________________________________ Core System Requirements The official Server code is Java application req...

...management, Java, database administration, and cloud services. Project Deliverables Server Deployment: Hybrid database approach Distributed Cluster We must separate: Edge Layer (Ingress + WebSocket) Application Layer (Spring Boot Core) Stateful Data Layer (Cassandra, PostgreSQL, Redis) Media + Search + Observability WebRTC Stack • Infrastructure: Are you planning to deploy on a our server • Version: need the latest official Signal Server (Java-based) • Customization : rebrand the app or simply run a private instance Configuration & Customization: Set up config .yml for production Optional branding or private instance configuration ________________________________________ Core System Requirements The official Server code is Java application req...

...deploy, and document the flows, including error handling and logging best practices. • Guide my in-house team on promotion to higher environments and ongoing maintenance so we can own the solution after go-live. You should be comfortable working with typical ERP, CRM, and custom application endpoints, leveraging WebMethod adapters or building custom connectors when required. Strong skills in Java services, flow services, and webMethods Designer are essential, and experience with version control (Git, Bitbucket) will be a plus. I will consider the job complete when: 1. All agreed interfaces run successfully end-to-end in our test and production environments. 2. Clear technical documentation and deployment scripts are handed over. 3. My team can monitor and troublesh...

My food-ordering app can currently print receipts only through Epson and Star devices. I need a universal Android driver that lets the same app print over Bluetooth to a wider range of 58 mm/80 mm thermal receipt printers, starting with Xprinter models. What I’m looking for • An Android library (AAR/JAR or bound service) that exposes simple Kotlin/Java calls. • Reliable Bluetooth connectivity: pairing, auto-reconnect, and print queue handling. • Full ESC/POS feature set for text, logos, QR codes, barcodes, cut commands, and cash-drawer kick. • Automatic brand detection or easy configuration so we can add other manufacturers later. • Verified printing on at least one Xprinter unit; compatibility with additional brands such as Zebra, Brother, ...

I'm ready to move forward with a dedicated Android mobile app that functions as a practical utility/tool, not an e-commerce or social networking product. The core concept is defined; now I need a developer who can take it from idea to polished release on Google Play. You’ll handle architecture, clean Kotlin or Java coding, a lightweight UI that follows Material Design, and any necessary device-level integrations to keep the tool fast, secure, and battery-friendly—even on older devices. Deliverables • Complete Android Studio project with well-commented source • Signed, ready-to-publish APK/AAB • Short build and deployment guide A build that passes Play Console pre-launch checks and fully demonstrates the tool’s key function will be the a...

PLSQL, Java & Git Support Open Posted about 12 hours ago • Ends in 6 days $30-250 USD Paid on delivery I need a reliable extra pair of hands to work alongside me on an Oracle-backed, Java-driven application. Day-to-day you’ll move between three main areas: PLSQL: writing complex queries, crafting or refactoring stored procedures/functions, and tuning anything that drags. If you can read execution plans and know how to trim milliseconds through indexing or hints, you’ll feel right at home. Java: the codebase frequently needs new features added, pesky bugs traced and fixed, and the occasional round of ruthlessly focused optimisation. It’s largely Spring, Maven and JUnit, but clean core-Java skills and an eye for performance are wh...

I have an existing Java codebase that should compile and run, but the Maven configuration and build-path settings are not wired correctly. I need someone to jump in, open the project in the IDE of your choice, review the , add or correct any missing dependencies, and designate the proper main class so the application starts with a simple mvn clean install && mvn exec:java (or the equivalent Run button). What you will do for me • Inspect and fix the so every external library resolves from Maven Central without manual jar drops. • Configure the IDE build path so no red-line errors remain and the project launches from the designated Main class. • Document the exact steps you take—just enough that I can repeat them on another machine. A short README or...

I need Support personal help for day to day tasks related to PLSQL and JAVA. PLSQL: writing complex queries, crafting or refactoring stored procedures/functions, and tuning anything that drags. If you can read execution plans and know how to trim milliseconds through indexing or hints, you’ll feel right at home. Java: the codebase frequently needs new features added, pesky bugs traced and fixed, and the occasional round of ruthlessly focused optimisation. It’s largely Spring, Maven and JUnit, but clean core-Java skills and an eye for performance are what matter most. Git: every change lives in a feature branch and reaches me through a pull request. Clear commit messages, sensible branching and zero “works-on-my-machine” surprises are mandator...