Software Engineer
Portfolio: rosenau.info | Case studies: rosenau.info/projects
I build, integrate, debug, document, deploy, and support API-driven web systems. My strongest fit is implementation engineering, developer support, technical support engineering, integration engineering, application support, and customer-facing solutions work where code, logs, APIs, cloud services, and clear handoff all matter.
- Python, TypeScript, React, Flask, Node, and Rust
- APIs, auth, webhooks, background jobs, support tooling, and runbooks
- PostgreSQL, Redis, Firestore, Firebase, Cloud Run, Docker, Terraform, GitHub Actions
- Technical onboarding, troubleshooting, documentation, deployment support, and operational handoff
- HNS DANE Browser - cross-platform Handshake browser with local HNS proof validation, authoritative DNS/DoH resolution, DNSSEC/DANE verification, and fail-closed Android/iOS routing.
- QuestByCycle - authenticated community climate game with quests, leaderboards, PWA workflows, and live program support
- Moonshine Art case study - sanitized Flutter/Firebase marketplace architecture with Cloud Run, Stripe Connect, print fulfillment, moderation, compliance, and support workflows
- CrowdPM Platform - map-based planning platform with API boundaries, data ingestion design, and contributor-ready implementation scaffolding
- APK Workbench - Linux ARM64 Android tooling with Rust services, GTK UI, build orchestration, and support-oriented docs
- DripCopy - resilient optical-media copier for low-power Linux hosts and fragile USB workflows
- copy-open-tabs - small browser workflow utility for collecting and sharing open-tab context
- Portfolio: rosenau.info
- Denuo Web: denuoweb.com
- GitHub: denuoweb
- Email: jaron@rosenau.info