Tobias Cudnik
Senior Fullstack Developer | Golang, TypeScript
Salary / Daily rate
London, UK
Freelance, open to permanent contract
Remote only
Skills
Languages
About me
Intro
Seasoned software engineer with over two decades of shipping to production. Embraces Golang, P2P systems, AI workflows, TUIs, and WebAssembly. Author of many Open Source projects, who worked across the whole stack at companies of all sizes, including his own startup. https://asyncmachine.dev https://ai-gents.work https://taskbot.app [email protected]
Work experience
Golang Developer
AI-gent WorkflowsFreelance
Feb 2026 - Present
9 months
Remote, OR 97458, USA
Working on local-first AI Workflows with embedded devtools (LangGraph replacement). https://ai-gents.work https://taskbot.app
Golang Developer (Fullstack)
Freelance (Self employed)Freelance
Jul 2020 - Present
6 years 4 months
Remote, OR 97458, USA
- Created a distributed workflow engine (AOP, actor model, state-machine) - - Golang; https://asyncmachine.dev - Delivered a CLI client for AI data pipelines (startup). - - Golang, UK; https://instill.tech - Refactored and optimized parts of Wireguard-based mesh networking software (startup). - - Golang, US; https://netmaker.io - Refactored and maintained fintech REST microservices (enterprise). - - Golang, US; https://idt.net - Worked on a distributed web scraping engine for Google Maps (scaleup). - - Nodejs, UK; https://ub.io - Worked on a mobile e-learning app for chess (scaleup). - - React Native, UK; https://chessable.com
Senior Golang Developer
NuNet
Jul 2025 - Mar 2026
9 months
Brussels, Belgium
Worked on a "decentralized docker compose" platform (startup).
Fullstack TypeScript Developer
RISE VISION LTD
Jul 2018 - Dec 2019
1 year 6 months
Gibraltar GX11 1AA, Gibraltar
Developed a wallet and other components for an open source proof-of-stake blockchain (startup).
Founder, Fullstack TypeScript Developer
TaskBot (email)Freelance
Nov 2017 - Jan 2019
1 year 3 months
Remote, OR 97458, USA
Founded a task management service synchronizing Gmail with Google Tasks.
Fullstack JavaScript Developer
Hola
Dec 2016 - Dec 2017
1 year 1 month
Netanya, Israel
Worked on P2P-based VPN and CDN services (scaleup exit).
Fullstack JavaScript Developer
Undisclosed Internet Company
Apr 2016 - Dec 2016
9 months
Gibraltar GX11 1AA, Gibraltar
Short contracts with online betting companies (enterprise).
Senior TypeScript Developer
Voiceworks
Apr 2015 - Mar 2016
1 year
Almere, Netherlands
Refactored and maintained a web video calling software for Open-Xchange (sme).
Senior JavaScript Developer
Cloudfarm5
Sep 2014 - May 2015
9 months
The Hague, Netherlands
Various mobile and browser PWAs for an early stage veterinarian startup.
Senior JavaScript developer (via Astreya P.)
Feb 2013 - Oct 2014
1 year 9 months
Wroclaw Metropolitan Area
Worked on a complex project management system PWA (enterprise).
Senior JavaScript Developer (via Luxoft)
UBS
Dec 2011 - Jan 2013
1 year 2 months
Kraków, Mazowieckie, Poland
Refactored, heavily optimized and maintained a fintech PWA (enterprise).
Senior Fullstack Developer
X-Team
Mar 2011 - Dec 2011
10 months
Kraków, Mazowieckie, Poland
Worked on fox.com, among other projects (agency).
Javascript Developer
CKSource
May 2009 - Mar 2011
1 year 11 months
Warsaw, Poland
Worked on CKEditor, a popular open source Rich Text Editor (startup).
Co-founder, Fullstack Developer
esyes.plFreelance
Nov 2007 - May 2009
1 year 7 months
Remote, OR 97458, USA
Co-founded an online footwear startup.
Fullstack Developer
Netizens Digital Innovation House
Mar 2007 - Dec 2007
10 months
Katowice, Poland
Developed DB-driven websites for an online media agency.
Founder, Fullstack Developer
wiadomosc.infoFreelance
Mar 2002 - Jan 2007
4 years 11 months
Remote, OR 97458, USA
Developed a distributed CMS and ran a high traffic website about early IMs.
Education
Katowice Institute of Information Technologies
Bachelor of Eng, Information Systems Engineering, Computer Science
2008 - 2012
4 years 1 month
Grade: 5.0 (A)
Scholarship. Thesis in Node.js - "Universal agent-based model (ABM) on the example of data delivery and exchange problem in distributed web services" (github).