Greitas Kodas — Lithuanian for “fast code”

We engineer software. Agents included.

Greitas Kodas is a senior engineering studio. We design, build, and secure software of every kind — including the kind that works on its own: production AI agents and agentic systems — for companies across the EU & US. Since 2015.

Six processes.
One senior team.

The flagship is the newest process in the table. The other five have been running — and paying their way — since 2015.

agent-dev flagship 01 running

AI Agent Development

Production agents that plan, act, and deliver — built on Claude and modern LLM stacks, wired into your tools via MCP, evaluated and monitored like real software. Not demos: systems with owners, logs, and rollback plans.

apa-runner 02 running

Agentic Process Automation

Manual workflows become supervised agent pipelines — with humans exactly where they matter, and nowhere they don't.

custom-sw 03 running

Custom Software Development

Whole products, platforms, APIs, and pipelines — built fast, built right, and maintained like we still own them.

consulting 04 running

AI & Software Consulting

Architecture reviews, hard build-vs-buy calls, and pragmatic AI strategy — from engineers who still ship.

legacy-mod 05 running

Legacy System Modernization

We untangle aging systems: clean APIs, safe integration surfaces, lower run costs — ready for whatever you plug in next, agents included.

sec-guard 06 running

Cybersecurity & AI Security

Classic hardening plus LLM-specific threat models: prompt injection, data exfiltration, agent permission boundaries.

./your-project idle

Slot reserved for whatever you're about to bring us. ▸

A studio named after its own deadline.

Greitas Kodas means “fast code” in Lithuanian — a name that doubles as a service-level agreement. We are a small team of senior engineers only, shipping production software for EU & US companies since 2015 — much of it for security and developer-tooling teams who read the code before they pay for it.

Some of the fastest code now runs itself — under supervision. We build agentic systems the way we build everything else: production standards, no black boxes, and accountability for whatever ships under our name — written by us or run by our agents.

$ uname -a
GK-Studio 2015.11 · senior-engineers-only · EU/US · vilnius · humans+agents

Ship, then iterate

Working software in weeks, then relentless iteration in production. Motion beats meetings.

Own the outcome

We're accountable for results, not billable hours — and that includes what our agents do.

No black boxes

Everything we hand over is documented, observable, and yours to inspect down to the last prompt.

Fast by default

It's in the name. Lean code, lean process, quick answers — speed is a habit, not a sprint.

loaded modules Python Golang Rust TypeScript Vue.js PostgreSQL MongoDB Claude & LLM APIs MCP

Teams we've shipped with

Security platforms, developer-tool companies, and operators across the EU & US.

OSOS Checkmarx Copla

Ready to ship something real?

No forms, no funnels. Pick a channel — a senior engineer answers.

Tell us what you're trying to ship. If an agent should own it, we'll say so — and if it shouldn't, we'll say that too.