Senior Full-Stack Engineer (Python / React)
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Summary
Senior full-stack engineer (back-end-leaning) building and maintaining features in a mature SaaS codebase: designing Python/FastAPI APIs, PostgreSQL schemas and migrations, background jobs, and polished React/TypeScript interfaces, plus debugging and code review across the stack. Remote, within South Africa.
We’re working with an established SaaS company with a mature full-stack codebase, and they’re looking for a Senior Full-Stack Engineer (back-end-leaning) with strong computer-science fundamentals to work across back‑end, front‑end, database and product workflows.
What you’ll do
- Build and maintain full-stack product features
- Design clean back-end APIs, domain models, database migrations and background jobs
- Develop polished React interfaces using existing shared components
- Debug complex issues across front-end, back-end, workers and data flows
- Write focused tests and review code for correctness, maintainability and production impact
- Improve architecture incrementally, without unnecessary rewrites
What you’ll bring
- 6+ years’ professional software-engineering experience
- Strong Python back-end experience, ideally with FastAPI or async frameworks
- Strong TypeScript and React
- Solid PostgreSQL — schema design, migrations and performance
- Experience with async or event-driven systems, and good judgement in large existing codebases
- Clear written communication and careful code-review habits
- A CS degree strongly preferred, or equivalent senior-level experience with strong CS fundamentals
Advantageous
- Domain-driven design or event-sourcing experience
- SQLAlchemy async, Alembic, Redux, Kubernetes or Playwright
- Experience in SaaS, scheduling, billing, healthcare or workflow automation
Working model
Remote, within South Africa.
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