Requirements

3+ years building production web services, with strong Python (Django preferred) and a habit of typed, tested code
Working proficiency in React and TypeScript to ship full features independently
Experience with async task systems and event pipelines, including idempotency, locking, retries, and failure modes
Experience with Postgres schema design and migrations supporting rolling deploys, feature flags, and revertable changes
Track record of performance work: profiling, parallelism, memory reduction, and large-file streaming through object storage

Nice to Haves

Hands-on experience with mobile build artifacts and tooling (LIEF, bundletool, apksigner, link maps, DWARF, code signing)
Experience with image processing or pixel-diff tooling
Familiarity with GitHub Apps or the Checks API
Background in data visualization, especially treemaps
Prior work on developer tools, CI, or observability products

Build and tune backend services and task-based pipelines that ingest, analyze, and compare builds with large artifacts and datasets
Own product functionality end-to-end, responding to feedback and proposing further development
Manage the GitHub integration including PR status checks, comments, approvals, and handling edge cases
Develop frontend features like treemaps, build comparisons, and diff viewers optimized for huge datasets
Operate and maintain deployments across regions, manage metrics, logging, on-call duties, and debug customer builds

Salary above the IT-KV minimum wage of EUR 60,844 gross per year, adjusted for the market situation
Employee benefit plans including incentive compensation, equity grants, paid time off, and group health insurance coverage
Equal employment opportunities and accommodations for individuals with disabilities
Inclusive, diverse culture focused on accessibility and open-source values