Note: The job is a remote job and is open to candidates in USA. BJAK is building proactive, AI-native applications that help users manage conversations, errands, organization, and workflows with minimal prompting. The Principal Software Engineer will own the engineering layer for an AI email application, shaping backend, API, mobile, and desktop architecture while leading a small team of senior engineers and ensuring reliable, scalable product delivery.
Responsibilities
- Own the application engineering strategy and execution across backend, mobile, and desktop
- Design reliable systems for AI-powered workflows, including state, orchestration, tool use, retries, fallbacks, and failure handling
- Build the APIs and abstractions that connect AI systems to real-world product experiences
- Lead a small, senior engineering team and raise the technical bar through design reviews, code reviews, and hands-on mentorship
- Make high-impact trade-offs across latency, reliability, cost, security, and user experience
- Establish strong production foundations: observability, monitoring, testing, and operational excellence
- Partner closely with ML leadership to turn model capabilities into robust, shippable product experiences
- Move quickly while keeping the architecture simple, maintainable, and ready to scale
Skills
- Significant experience leading application or product engineering for complex systems
- Strong hands-on background building and shipping backend systems used in production
- Experience building AI-powered products or systems that integrate with modern ML/LLM capabilities
- Strong technical judgment and the ability to make decisions with incomplete information
- Comfortable working across backend and client platforms, with deep expertise in at least one
- A strong bias toward ownership, shipping, and learning from real-world usage
- High standards for code quality, reliability, and engineering fundamentals
Benefits
- Remote work arrangement
Company Overview