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tomas-sereikis/README.md

Tomas Šereikis

CTO at Podimo and founder of Selan. Vilnius and Copenhagen.

Podimo

I joined in February 2019, when Podimo spun out of WakieWakie and was still an idea with no team and no product. I wrote the first backend and the first mobile apps.

Engineering has gone from a handful of developers to more than 50 across squads, and I have spent as much time on how we hire, onboard and give feedback as on architecture. The podcast and audio platform is past a million subscribers. Behind it are 50+ microservices on GCP handling content ingestion, payments, audio streaming and push, at over 100M requests a day.

Lately most of my attention goes to AI in engineering, and what the work actually becomes when agents do the heavy lifting. We used to write almost everything by hand. Now most of it is AI-assisted and some of it runs without us. A lot of that sits on Kepler, an internal agent wired into our systems that reviews code, runs audits and ships changes.

We are hiring.

Selan

Selan came out of that. Once a whole team codes with agents, two things go wrong: nobody can see what it costs, and the agents send whatever they read, credentials included, to the model provider. Selan sits between the team and the providers. It shows who spends what across every AI account and model, caps what each person can spend, and replaces secrets in flight so the provider never sees them.

Reactor is part of Selan too. It runs small agents that each do one job overnight and leave a merge request for the morning.

Open source

  • whatileaked finds credentials your coding agent already wrote to disk, in Claude Code, Codex and Cursor transcripts and in the instruction files it re-reads at the start of every session. npx whatileaked scan shows what it finds, and wipe redacts them in place. It makes no network request and has no dependencies.
  • claude-ai-export exports your claude.ai chats, projects, attachments and scheduled tasks to a zip, and imports them into Claude Desktop. It runs in your browser and uploads nothing.
  • whatishipped is a Claude Code skill that redraws every screen of an iOS, Android or web app from its code, then checks each drawing against a screenshot of the real app.
  • selan-practices reads a repository's own Claude Code transcripts, shows what the sessions cost and proposes a shorter AGENTS.md.
  • top-claude-code-skills ranks the most-starred Claude Code skills and is refreshed every day.

On the side

Mokausi is a set of 13 Lithuanian learning games for children aged 5 to 7, which I make with my kids. They cover letters, reading, numbers, nature and the wider world. The games are free and have no ads or accounts.

Elsewhere

Pinned Loading

  1. selan-ai/claude-ai-export selan-ai/claude-ai-export Public

    Export claude.ai chats, projects, attachments and scheduled tasks to a zip — and import them into Claude Desktop. Runs in your browser; nothing is uploaded.

    TypeScript

  2. selan-ai/whatileaked selan-ai/whatileaked Public

    Find credentials your coding agent already sent. Scans local Claude Code and Codex transcripts against the gitleaks rule set. No network, no telemetry, zero dependencies.

    TypeScript 7