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Staff Software Engineer, AI Email App

Bjakcareer · United States

onsitestaffPosted Sep 25, 2026APIsbackend servicesobservabilitymonitoringtestingorchestrationLLM

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About this role

**ABOUT THE ROLE** Build proactive, AI-powered email applications for users who aren’t “AI-native.” You’ll own the engineering layer that turns AI capability into a reliable, scalable product—focused on long-running workflows, persistent context, and real-world task completion. **WHAT YOU’LL OWN** - Own application engineering strategy and execution across **backend, mobile, and desktop** - Design reliable systems for **AI-powered workflows** (state, orchestration, tool use, retries, fallbacks, failure handling) - Build **APIs and abstractions** connecting AI systems to real-world product experiences - Lead a small team of **senior engineers** (design reviews, code reviews, hands-on mentorship) - Make high-impact trade-offs across **latency, reliability, cost, security, and UX** - Establish production foundations: **observability, monitoring, testing, operational excellence** - Partner with **ML leadership** to ship robust product experiences - Move fast while keeping architecture **simple, maintainable, and scalable** **WHAT WE’RE LOOKING FOR** - Significant experience leading application/product engineering for complex systems - Strong hands-on background shipping **production backend systems** - Experience building **AI-powered products/systems** integrating modern ML/LLMs - Strong technical judgment; ability to decide with incomplete information - Comfortable across backend + client platforms; deep expertise in at least one - Ownership mindset: **ship, learn from real usage** - High standards for code quality, reliability, and engineering fundamentals **OUTCOMES** - Production systems are observable, monitored, and stable under real-world load - Decisions consistently balance speed, cost, reliability, and user experience - Backend/mobile/desktop features work smoothly and reliably - **Latency and reliability improve measurably** over time **HOW WE WORK** Small, high-talent-density, hands-on team. Broad ownership, fast decision-making, and strong engineering fundamentals—less process, more building something exceptional. **INTERVIEW PROCESS** If there’s a fit, you’ll be scheduled for **3–4 interviews** (virtual and/or onsite). Applications are evaluated by the technical team.

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