Sebastian Tekieli
From: Poland
Location: Kraków
On Useme since 4 August 2014
About me
PL: Inżynier AI i były CTO, 20+ lat w SaaS. W DataFeedWatch rozwinąłem zespół z 3 do 26 osób, byłem też IT Directorem w Punkta.pl. Wdrażam AI w zespołach i firmach: systemy wieloagentowe, agenci AI zintegrowani z aplikacjami, RAG, LLM (Claude, GPT, Gemini). Pracuję z Claude Code i Codex. Stack: Ruby on Rails, PostgreSQL, React, Next.js, Flutter. Szukam stałej współpracy 10-20 h/tydz.: przejęcie i rozwój systemu, wdrożenie agentów AI, fractional CTO. Zdalnie, PL/EN.
EN: AI engineer and former CTO, 20+ years in SaaS. At DataFeedWatch I scaled engineering from 3 to 26 people; I was also IT Director at Punkta.pl. I bring AI into teams and businesses: multi-agent systems, AI agents integrated with business apps, RAG, LLMs (Claude, GPT, Gemini). I work with Claude Code and Codex. Stack: Ruby on Rails, PostgreSQL, React, Next.js, Flutter. Open to ongoing work, 10-20 h/week: system takeover and development, AI agent implementation, fractional CTO. Remote, PL/EN.
CV / Résumé
Jul 2026 - Now
Founder / AI Agent Platform Architect
Legatus.team
Building an AI agent platform running real workflows across 20+ business apps via APIs and browser automation. Set reliability, permission, security and evaluation standards.
May 2026 - Now
AI Platform Architect
WebWave CMS
Designed and delivered an AI POC validated by the executive team. Defined the multi-agent architecture, LLM integrations, technical roadmap and quality standards for code, data and AI outputs.
May 2025 - May 2026
Technical PM / AI-assisted Software Engineer
Visuality.pl
~150 PRs in 5 months modernizing a large Rails app with Claude and Codex. Dev setup cut from 8 h to 40 min. 80% test-coverage gate for changed code. iOS and Android apps built with Hotwire Native.
Oct 2022 - Now
Developer - Volunteering
Fundacja EDK
Developing a route-planning platform for 50,000+ users (Next.js, React, OpenStreetMap), plus payment, mobile and internal systems for the foundation.
May 2022 - May 2025
IT Director / CTO
Punkta.pl
Owned technology strategy, architecture, delivery and security of an insurance SaaS platform in a regulated industry. Led a 7-person product and engineering team. Hired and mentored engineers.