SWE – Senior Engineer; fullstack

Our client, an Early-stage user data AI platform, is hiring a Senior Full Stack Engineer in New York. The successful candidate will help define both the organization's technology and culture from the ground up.

• Own and ship end-to-end features across the full stack, from backend systems to frontend UX.
• Help define and evolve the architecture of core systems, with a focus on scalability and simplicity.
• Work closely with product to translate ambiguous ideas into clear technical direction and shipped experiences.
• Design and build user-facing systems that feel fast, intuitive and responsive.
• Contribute to shaping their engineering culture, standards and development practices.
• Identify and resolve system bottlenecks across infrastructure, data and application layers.
• Make pragmatic decisions on when to build, refactor or intentionally take on technical debt.
• Collaborate cross-functionally with design and product to refine UX as a system, not just a surface layer.
• Help mentor and raise the bar of the early engineering team as the company grows.

• At least 7 years of software engineering experience, including setting technical direction and leading projects.
• Ability to maintain an exceptionally high bar for engineering quality, while still striving to be the best individual contributor on your team.
• Experience across the stack and ability to think holistically about code, infrastructure, data and user experience.
• Previous experience in an early-stage environment.
• Experience with AI/LLM workflows is a plus.

• Salary: $150k - $220k