Jaron Rosenau | Software Engineer

Software Engineer.

Software engineer experienced in turning operational requirements into deployed, documented web and Linux/cloud systems. Builds and maintains applications, APIs, integrations, and operational tooling. Owns requirements clarification, architecture, implementation, code review, testing, debugging, deployment, and support handoff for customer-facing and internal systems.

Technical skills

• Most-used: Python, TypeScript/JavaScript, SQL, Bash, Git, Linux.
• Web and integration: Firebase/Firestore, Cloud Run, REST APIs, authentication, webhooks, background jobs, Flask, React/Vite.
• Data and operations: PostgreSQL, Redis, NGINX/Gunicorn, GitHub Actions, CI/CD, smoke testing, logging, runbooks.
• Additional: Rust, gRPC, GTK4, Flutter/Dart, Java, Swift, Docker, Terraform, NoSQL.

Experience

• Software Engineer / Owner — Denuo Web, LLC | Remote | March 2024–Present.
• Build and maintain a 12-project software portfolio from requirements and architecture through implementation, automated deployment, documentation, and maintenance; approximately nine projects published, deployed, or publicly released.
• Co-created and operate QuestByCycle across four production community cycling programs, supporting 248 registered accounts, 64 active participants, and 993 submissions across 342 quests.
• Proposed and coordinated two linked CrowdPM capstones involving seven Oregon State University engineering students; led the four-person TypeScript/Firebase platform team and advised the three-person ECE sensor team.
• Released HNS DANE Browser on Google Play, maintain APK Workbench with 19 GitHub stars, and published approximately a dozen portfolio guides.
• Lab Assistant (Software Engineering) — Lane Community College | September–December 2023. Delivered two Flask internal applications in one term: self-service password reset and lab-attendance management.
• Designed an approximately 30-second password-reset flow with automated token delivery, configurable expiration, UNIX-socket access controls, structured logging, and tested server/frontend components.
• Converted staff workflow requirements into documented, configurable tools with repeatable deployment procedures and operator handoff materials.
• Software Engineer (Paid Bounties) — HTMLCOIN Foundation | Remote | May 2018–May 2022. Completed three paid bounties plus maintenance across wallet, explorer, API, and Linux infrastructure repositories.
• Ported Qtum wallet and explorer software for HTMLCOIN, preserved chain-specific behavior, updated deprecated RPC/API integrations, and documented public-service deployments.
• Served as one of two regular technical contributors during a three-year collaboration, receiving repeat assignments and maintaining software and Linux infrastructure used by the community.

Selected projects

• HNS DANE Browser — Rust, Kotlin, Swift, Android, iOS, DNSSEC, DANE: shared Rust core, local header/proof validation, authoritative DNS/DoH, certificate verification, and fail-closed proxy/TLS routing.
• APK Workbench — Rust, gRPC, GTK4, Linux ARM64: multi-service Android workflow platform with thin GTK/CLI clients, streamed job state, orchestration, Debian packaging, and release documentation.
• Moonshine Art — Flutter, Firebase, Cloud Run, Stripe Connect: private marketplace covering seller onboarding, checkout/webhooks, print fulfillment, moderation, compliance, audit logs, and support handoff.

Education

• B.S. Computer Science — Oregon State University | Corvallis, Oregon | June 2026.

Affiliation and recognition

• Kappa Eta Kappa — Alumni member, computer science and electrical engineering fraternity.
• U.S. Department of Energy — Responsible Disclosure acknowledgment.
• FCC Amateur Radio License — General Class, KI7ITG.