Work with me
I am an Android and backend engineer in Seoul. I take on fixed-scope contract projects alongside a full-time role, which means I work evenings and weekends, async by default, and I price per deliverable rather than per hour. Engagements start at USD 2,500.
What I take on
- →Ship an Android app end to end, or port an existing iOS app to Android.
- →Rescue a release: crashes, ANRs, store rejections, billing and subscription integration.
- →Build or fix the backend: Cloudflare Workers, D1, R2, Hono, Node, Postgres.
- →Add AI features to a product that already has users.
How an engagement works
- 01 You email me what is stuck and what done looks like.
- 02 I reply within one business day with a scope, a fixed price, and a date. If I cannot do it, I tell you in that same reply rather than after three calls.
- 03 Thirty percent to start, the rest on delivery. Anything longer than four weeks gets milestones.
- 04 I work async and send a written update at least twice a week, so you are never wondering.
- 05 You get the code, in your repository, committed under your account.
What I do not take on
- ×Full-time or forty-hour-week contracts. I will say no rather than string you along.
- ×On-site work.
- ×Unpaid trials or spec work.
- ×Anything where neither of us can tell afterwards whether it worked.
Proof
- → Spiko, an exam-prep app I built and run alone: 100,000+ installs on Google Play, 4.8 stars, cash-positive after infrastructure, AI inference, platform fees and taxes.
- → Brivva, real-time multilingual live commerce: RTMP and GRIP ingest, multi-platform egress, ElevenLabs voice cloning, Soniox real-time speech-to-text with native translation.
More detail on the projects page, and the code is on GitHub.
Start here
Email khasanjonovich@gmail.com with four things: what you are building, what is stuck, your deadline, and your budget range. That is enough for me to tell you whether I can help, and what it costs.
Based in Seoul. Evenings here overlap with US mornings, and afternoons overlap with Europe.