Senior Staff Engineer, Spark

Lightspark is building open payments for the Internet—always-on payment solutions powered by Bitcoin, the only open, neutral network for moving value. We're seeking a highly adaptable, hands-on Senior Staff Engineer who can work across domains to define architecture from the ground up, dive into unfamiliar territory, and design, build, and scale a next-generation open payments network.

Requirements

• 10+ years of engineering experience
• Proven ability to design and scale large, complex systems with high reliability and low latency
• Strong track record of technical leadership driving architecture decisions, influencing roadmaps, and delivering mission-critical systems
• Comfortable operating across different languages, frameworks, and problem domains; primary stack includes Go, with additional work in Python, Rust, C++, and Kotlin
• Experience with modern deployment and infrastructure tooling (Docker, Kubernetes, AWS, etc.)
• Data-driven approach to problem solving, with experience building metrics-driven feedback loops
• Ability to thrive in high-intensity, high-ownership environments

Benefits

• Generous Paid Time Off
• 401k Matching
• Retirement Plan
• Visa Sponsorship
• Four Day Work Week
• Generous Parental Leave
• Tuition Reimbursement
• Relocation Assistance