RAZIŠČI

4,9

(81 ocen)

Iosif P.

@iosifpeterfi

4,9

7,1

94%

Systems Architect, Software Engineer, Developer

$64 USD/uro

・

Germany (12:51 dop.)

・

Pridružen(a) od november 14, 2006

・

3 Priporočila

$64 USD/uro

・

Senior Systems & Security Engineer with 15+ years in enterprise-grade IT. I design, harden, and operate high-availability infrastructure, and I streamline delivery with automation and clean processes. My focus: reliability, security, and clear documentation—so changes are low-risk and handovers are effortless. Strengths: Infrastructure architecture & operations (Linux/Windows, virtualization, networking) Security hardening, identity & access, monitoring/observability Automation & DevOps practices (CI/CD, config management, IaC) Migrations and upgrades with minimal downtime Concise runbooks, risk-aware planning, and stakeholder-friendly communication Certifications: CompTIA Security+, Microsoft MCSE/MCSA/MCITP Languages: English (C2), German (C1), native Romanian Location: Germany • NDA-friendly • Reliable and responsive

Verifikacije

Pravočasno

92 %

V okviru proračuna

99 %

Delež sprejetih

85 %

Delež ponovnih najemov

33 %

Glej vse Linux Developers v Germany

Portfelj

SchnellNode EU hosting: site + ops

Role: Senior Systems Engineer
Summary: Planned and operated a highly available Cisco/VMware/Windows stack: UCS/Nexus/ASA, ESXi, AD/Exchange/SCCM, NetApp, Veeam, VDI (VMware Horizon). Implemented patching, backup, and access controls for mission-critical services.
Outcomes: Reduced downtime during maintenance windows; faster VDI login and app delivery; hardened perimeter and email security; documented SOPs for audits.
Tech: Cisco UCS/Nexus/ASA, ESXi, AD/Exchange/SCCM, NetApp, Veeam/BackupExec, Horizon VDI, PowerShell.
Skills/Tags: Enterprise Windows, Networking, Virtualization, Backups/DR, Compliance.
Visuals: High-level network diagram (redacted), VDI/service dashboards

Datacenter Modernization

Role: Product & Delivery Lead / CEO
Summary: Owned roadmap and execution for a privacy-first, blockchain-integrated cloud. Prioritized features from user research, aligned stakeholders, and guided engineering on secure architecture and go-to-market.
Outcomes: Shipped core platform milestones on time; defined KPIs; reduced delivery risk via staged releases and clear acceptance criteria; investor/customer communications.
Tech: Product tooling, backlog systems, go-to-market assets; oversight of infra and chain components.
Skills/Tags: Product Strategy, Stakeholder Mgmt, Risk, Roadmapping, Security-by-Design.
Visuals: Product timeline, feature overview, KPI snapshot (sanitized).

Ethernity CLOUD - DeCC

Role: Blockchain Infrastructure Engineer
Summary: Operated production validators and public RPC endpoints for the bloxberg research network. Implemented monitoring, secure key management, network policies, and upgrade playbooks; maintained block explorer and faucet services.
Outcomes: Stable consensus participation; improved node sync times; zero key exposure incidents; documented blue/green upgrade workflow.
Tech: Linux, systemd, reverse proxies, monitoring/alerting, snapshot/backup tooling.
Skills/Tags: Blockchain Ops, Node Security, Observability, SRE Practices, Upgrade Automation.
Visuals: Explorer dashboard (redacted), validator metrics (sanitized).

bloxberg — Research Blockchain

Role: Systems Architect / Science Systems Administrator
Summary: Designed, operated, and evolved a clustered VMware/Windows/Linux environment supporting research services (AD/PKI, SQL, collaboration, MDM). Ran MPDL’s blockchain infrastructure (validators, RPC, explorer, faucet) with hardened security and documented procedures.
Outcomes: ≥99.9% service uptime; patching and backup SLAs formalized; faster incident resolution (minutes vs. hours); reproducible chain upgrades with rollback plans.
Tech: VMware ESXi/vCenter, Windows Server/AD CS, Linux, SQL Server, Workspace ONE, Seafile, Bash/PowerShell, CI scripts.

Max Planck Digital Library (MPDL

SchnellNode EU hosting: site + ops

Datacenter Modernization

Ethernity CLOUD - DeCC

bloxberg — Research Blockchain

Max Planck Digital Library (MPDL

4.9 · 81 ocen

Ocene

Multiplayer Texas Hold'em Poker Site Development php and JS + Crypto payments using oxapay -- 5 • $1.340 AUD

Peter is a talented and thoughtful developer who takes pride in his work and the successful outcome for this clients. WIll work again!

Alexander G.

@jamieprojects

•

Ulverstone, Australia

•

pred 3 dnevi

Deli

Nextcloud Setup for Non-Profit Event • £360 GBP

I was a first-time user on this site - and not confident on communicating my needs - as I'm not technically minded - but I was in good hands and dealt with in a supportive way through the project cycle. I was able to ask questions, learn as i wemt along and felt safe in my ignorance! Generally - this could not have gone better and it was a great expereince. communication was excellent throughout. I would come back for support with future projects. Thank you.

še toliko: 2

Ian W.

@S28PLUS40

•

Flint, United Kingdom

•

pred 5 dnevi

Deli

WordPress to CodeIgniter 4 Site Migration • $950 USD

Very professional and efficient, delivering everything we required promptly. Thank you!

še toliko: 5

meta.win.srl

@metawin42

•

Bucuresti, Romania

•

pred 10 dnevi

Deli

Android Secure Storage Migration • $2.500 USD

Iosif fully understood the urgency as well as the scope of the task. His experience is IT Security and specifically the Android platform was critical to solving this issue. He worked closely with our team (over the weekend) to deliver the solution.

Java

Linux

Mobile App Development

Android

Flutter

še toliko: 5

Vishal M.

@ishim9

•