A broken interaction, a TypeScript error or a failing build can stall an otherwise promising product. I diagnose reproducible issues and deliver focused code changes with clear checks and handover notes.

I am Viktor, founder of BRTHLS and Frihet, combining product architecture and hands-on implementation. This service covers existing React and TypeScript repositories, including code exported from Lovable or developed with Cursor or Claude Code.

Up to three agreed UI, TypeScript or build defects in one existing repository. We confirm the issues, expected behaviour and feasibility before starting. You receive the code changes, focused regression checks and an explanation of what changed.

Share the error and reproduction steps. I reproduce the issue, agree the acceptance checklist with you, make the changes and verify the affected behaviour. Two consolidated revision rounds refine the agreed fixes.

The listed fee covers this focused sprint, delivered within ten days once the scope, access and setup are ready. You retain ownership of your code and accounts. New features, full rewrites, data migration, authentication or payment redesign, and comprehensive security or performance audits require separate scope. Hosting and subscriptions are separate.

Send your stack, the affected screens or build command, and what should happen instead. I will confirm whether this sprint fits before you book.