I own the systems
the world’s hardest
programs run on.
Defence, rail, healthcare, PPP and NEOM-scale construction run their contracts on a platform I architect and operate. I lead from the front. I own the rewrite. I command the incident. I find the vulnerability first.
Ten years deep in Python. Two-year runtime owner of the platform's async core. The engineer the team calls when production breaks — with oversight across the code, the pipeline, and the business it serves.
Sole author of the platform's async job substrate — the reliability backbone every background process runs through.
Runtime owner and production incident commander. The first call when something breaks at scale.
Defence, rail, healthcare, PPP and NEOM-scale construction depend on the platform I build.
Co-founder and CEO. Product Owner of an external team. Requirements shaped, releases coordinated, decisions owned.
Shipped with, not just evaluated.
Every mark below is a tool I've run in production or shipped a personal project on. Tap any one to see where it's actually running.
What I'm on right now.
The work in front of me this quarter — what I'm building, what I'm watching, and what I'm engineering toward.
- Gemma4 — multi-agent trading research
Concurrent Gemini agents scoring statistical alpha hypotheses over a Celery + FastAPI backtesting engine, four-database Redis, one docker-compose stack.
- The platform's async core
Still runtime owner of the Celery substrate I authored — this cycle, query-layer surgery took a core report's P95 from 15.4 s to 0.67 s.
- trut.hu governance backend
Async FastAPI multi-tenant DAO platform with TTS and AI-agent flows, hardened with mypy / ruff / pre-commit on every commit.
- A 1,000-MR review corpus
Quantifying what reviewers actually repeat — the basis for pre-merge tooling that automates roughly one-sixth of recurring review feedback.
- Production reliability classes
DB-lock and stuck-job patterns across multi-thousand-book libraries — the failure modes I get called to command.
- The AI-engineering practice
A Claude Code slash-command suite and MCP-driven evidence pipeline now in daily use by the team.
- Reliability under load
Async architecture that stays calm when traffic spikes, and migrations that land without downtime.
- Leverage over effort
Turning repeated senior-engineering work into tooling — backed by measured data, not vibes.
- End-to-end ownership
Agency over the whole system: the code, the pipeline, and the business process it serves.
The full scope, in 12 projects.
Trading agents, native iOS apps, an MCP server on PyPI, a Figma plugin, ski-tourism platforms — owned end-to-end outside the day job. The 5 flagged Active have shipped commits in the last six months.
TikTok-News
ActiveCrypto / Web3 news hub with live market data and Gemini-powered insights.
Gemma4
ActiveFastAPI + Docker multi-agent backtesting and alpha-discovery platform.
trut.hu
ActiveSustainability-DAO backend with governance, TTS and AI agents.
Bonvo Ski
ActiveSki-tourism corporate site with maps and partner portal.
Bonvo Ski Maps
ActiveNative iOS / macOS / watchOS ski mapping and navigation.
RiskGuard
SwiftUI iOS app for spot, margin and perpetual-futures risk.
CL3
FastAPI + MongoDB + Celery + Redis market-data stack.
FlashBook
Next.js + Supabase booking SaaS for Bonvo photographers.
MultiRecordings
Next.js + Supabase web + native iOS / macOS / watchOS recorders.
GamifiedTrade
PS5-gamepad forex simulator with synthetic GBM candles.
MCP-Redmine
Claude × Redmine MCP server, published on PyPI.
Hungarian Font Helper
Figma plugin with AI-powered Hungarian-character font checks.
I run the system, not just the code.
Every Redmine issue I drove, every merge request, every production decision — logged. Requirements shaped. Incidents commanded. Releases coordinated. Not just authorship of code, but agency over the whole development process.
“Gergely was responsible for our CI/CD pipelines and monitoring, and he was always the person we called when something went wrong in production. He led the effort to clean up and modernise our old Python codebase — no small task. One of the best engineers I have worked with.”
“I worked with Gergely for three years at Affinitext. He was great to partner with — we'd sit down, map out exactly what was needed, and agree on the best communication mechanisms and design patterns before diving in. Our collaboration was always smooth sailing.”
The signal
Initiative
I file more than I'm assigned and own it through to landing. I shipped a design-system rebrand unilaterally and disclosed four security vulnerabilities before anyone asked. The work I take on is the work I decided mattered.
Authority
Runtime owner of the platform's async core. De-facto owner of CI/CD, the type-safety pipeline and compliance notifications. When production locks up, I command the incident. I am the person called when it matters.
Leadership
Co-founder and CEO. Product Owner of an external design team. I shape requirements, coordinate releases, and communicate with stakeholders in their register — from engineers to executives running multi-billion-dollar programs.
Oversight
Complete agency over the system: the code, the development pipeline, and the business process it serves. I engineer for reliability first — async architecture that stays calm under load, and migrations that land without downtime.
Selected work
Celery Migration — Platform Async Substrate
2024Decommissioned a legacy XMLRPC / TGScheduler jobserver and migrated the platform onto a managed Celery framework I designed end-to-end. +10,787 LOC across 42 files, multi-tenant context restoration, 50+ legacy jobs ported. Runtime owner two years post-launch.
Checkout-Status Workflow — Full-Stack Rewrite
2025Ten-month, eight-version rewrite of the platform's core checkout-status workflow — the surface that touches every customer transaction. Python / SQLObject backend, ExtJS + Angular UI, SQL migrations and trigger logic. Persistence and tolerance for rework until it landed cleanly.
Userlog 24× Performance Fix
2026Two compounding bugs causing endless loads — missing SQL pagination on grouped queries plus inverted slicing in ReportJob. Real query-layer surgery, not a UI band-aid: P95 from 15.4 s to 0.67 s. Three rewrites before landing — quality over speed.
Security Research — Four Pre-Disclosure Reports in 30 Days
2026Dangling-IP subdomain takeover; CSRF tokens issued from a predictable Mersenne-Twister PRNG with state recovery through a 27-file import footprint; unauthenticated callback enabling SMS-MFA bypass and account takeover; leaked-credential audit. Each in executive register, with ISO 27001 framing and remediation plans.