10/20/2026 updated

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Senior C++-Entwickler & Softwarearchitekt

Stara Zagora, Bulgaria
Germany +5
info: Germany, Austria, Spain, Italy, France, Belgium
12 Jahre Schule (Rudolf Steiner Schule)
Stara Zagora, Bulgaria
Germany +5
info: Germany, Austria, Spain, Italy, France, Belgium
12 Jahre Schule (Rudolf Steiner Schule)

Profile attachments

jarle-cv.pdf

About me

Freiberuflicher C++-Entwickler und Softwarearchitekt mit über 30 Jahren C++-Erfahrung. Spezialisiert auf komplexe Software, Performance-Optimierung, Fehlersuche und verteilte Systeme. Ich löse anspruchsvolle technische Probleme – zuverlässig, effizient und pragmatisch.

Boost (C++ Libraries)C++ (Programming Language)DevOpsSolution ArchitectureSystems ArchitecturegRPC
Ich entwickle und repariere komplexe C++-Software – insbesondere dann, wenn Zuverlässigkeit, Performance und Sicherheit entscheidend sind.

Ich bin freiberuflicher C++-Entwickler und Softwarearchitekt mit über 30 Jahren C++-Erfahrung und 40 Jahren in der IT.

Meine Schwerpunkte:

  • C++ (inkl. C++20), modernes Softwaredesign und Architektur
  • Analyse und Behebung komplexer Fehler, Abstürze und Speicherprobleme
  • Performance-Optimierung, Multithreading und ressourceneffiziente Software
  • Backend-Entwicklung, Netzwerkprotokolle, REST/gRPC, Datenbanken und Microservices
  • Linux, Windows, Qt/QML, plattformübergreifende Entwicklung
  • IT-Sicherheit, Kryptografie und sichere Kommunikation
  • Cloud-Infrastruktur, Kubernetes, CI/CD und DevOps
  • Integration von KI/LLMs und Entwicklung KI-gestützter Anwendungen
Ich habe Software für Startups, internationale Unternehmen und Open-Source-Projekte entwickelt. Zu meinen Erfahrungen gehören unter anderem weltweit eingesetzte Netzwerksoftware, hochverfügbare verteilte Systeme sowie vollständige Desktop-, Mobile- und Cloud-Anwendungen.

Ich übernehme sowohl kurzfristige Einsätze zur Problemanalyse und Architekturberatung als auch langfristige Entwicklungsprojekte. Dabei arbeite ich eigenverantwortlich oder als Teil eines bestehenden Teams.

Remote weltweit, vor Ort innerhalb der EU nach Vereinbarung.

Weitere Informationen und Projekte: https://cpp-freelancer.com/

Experience

Professional experience10+ years
Freelancer since2015

Languages

BulgarianBasic knowledgeGermanBasic knowledgeEnglishFluentNorwegianNative speaker

Project history

Developer - NextApp

Own Project
GTD/productivity application for desktop and mobile. Instant sync of any changes between devices. Server runs on Linux and docker/k8s, user app runs on Linux, Windows, MacOS, Android, iOS. Built with C++ and Qt/QML.

Developer - Nsblast

Own Project
Massively scalable authoritative DNS server. Designed to handle hundreds of millions of FQDNs. Fast, reliable, database level replication between nodes. Can be deployed as a SaaS DNS solution. Built with C++ on Linux.

Developer - restc-cpp

Own Project
HTTP client and JSON serialization library in modern C++. Takes the pain out of accessing JSON APIs from C++. Built with C++ on Linux and Windows.

Principal C++ Developer

The Last Viking LTD
Working freelance in own company. Major customers included a globally distributed active-active database SaaS startup, a leading telecoms infrastructure provider in the American market, and a Social App / crypto-wallet startup. Responsible for advanced distributed systems development and systems design, coding, automated builds, k8s deployments, disaster-response, supporting dev, devops, performance and QA teams.

Developer - WarFTP

Own Project
The original free FTP server for Windows. A rewritten version supporting more protocols and platforms is under consideration. A partial, new cross-platform implementation is available on GitHub. Built with C++.

Developer - vUbercool

Own Project
Proof of concept software that hosts 1 billion stateful websites with individual FQDNs on an old laptop. Built with C++ on Linux.

Developer - shinysocks

Own Project
A small, ultra-fast SOCKS proxy server. Built with C++ on Linux.

Software Architect / Senior C++ Developer

Labssoft BG EOOD
Worked as a contractor in the Sofia office of one of the world's 5 largest software companies. Optimized and maintained critical components in their core server product.

Senior Software Developer

Fuzebox (WebMessenger Bulgaria EOOD)
Implemented HQ audio/video conferencing using SIP and RTP over a proxy capable TLS tunnel for a Windows browser extension (like Zoom).

Developer - VikingGTD

Own Project
Simple Getting Things Done App for Android. Built with C++ for Android.

Senior Software Developer

Freelance
Continuing work for LDP.

Co-founder

Leroen & Aase ANS, later LDP
Filled several roles, from sales to development. Developed several state of the art technologies deployed with regional customers, such as web publishing systems, shipyard and truck-yard management systems, a fully featured word processor for QNX and many bespoke solutions.

Author - Maskinvare og operativsystemer

Fagbokforlaget
An introductory textbook for students covering hardware and operating systems, published in Bergen, Norway.

PC Technician

Haukeland Sykehus (Regional University Hospital)
The job where the calling for computers was found.

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