# Work

Engineering contributions and selected personal projects by Efe Baran Durmaz. Solana work is grant-funded open-source contribution, not employment. Whop is professional experience, not a claim of sole product ownership.

## Solana

Open-source contributor · Grant-funded. May 2026 – Present.

- Across languages: Built SDK components across seven languages for pay-kit.
- The same contract: Added cross-language conformance checks for consistent payment behavior.
- Safer payments: Worked on signing, replay protection, and recovery paths.

## Whop

Software engineer. June – July 2026.

- From the terminal: Worked on the CLI for managing products and payments.
- A clearer way in: Built authentication flows for developer tools.
- Money in motion: Worked with the Cards and Wallets APIs.

## Jotform

Backend engineering intern. January – May 2026.

- Find answers faster: Built a Go CLI and TUI that cut log investigation from 10–20 minutes to about 30 seconds.
- Built with the team: Interviewed five engineers to understand their debugging workflow.
- Interviews in the browser: Worked on a PHP/WASM interview platform with shared code, video, and replay.

## Nokia

AI & backend engineering intern. September – December 2025.

- Six times the throughput: Separated I/O and CPU work in a Rust/PyO3 document pipeline.
- At document scale: Processed 300,000 documents in under three weeks.
- Ready to run: Worked with MinIO and Kubernetes to support the pipeline.

## Selected personal projects

### Sardis

Let agents pay. Keep control. Public SDKs. Private payment engine.

- Set what an agent can spend.
- Check each payment against your rules.
- See why it was allowed or blocked.

### agit

A history you can return to. Alpha.

- Save an agent’s progress.
- Compare changes and try another path.
- Return to an earlier state.

### Verit

Understand the change. Check the proof. In development.

- See what a pull request changes.
- Generate tests and inspect the results.
- Get a clear visual explanation before deciding.

### Ergon

A command line for your phone. Experimental. Built in Swift.

- Let an agent work across supported apps.
- Use clear commands to get things done.
- Keep important actions under your approval.