Senior Full Stack Engineer

Join HumanSignal as a Senior Full Stack Engineer to build end-to-end features across React/TypeScript and Python/Django, shaping APIs and data models. Work remotely and earn between $115,000 and $195,500 USD. HumanSignal is a human data partner for companies building AI models and products. We specialize in real-world data collection, multimodal pipelines, and multi-step workflows, partnering with researchers to enhance AI development.

• •Build full-stack features: React/TypeScript on the client; Django/REST services, data models, and background jobs on the server.
• •Own outcomes, not tasks: refine scope, suggest trade-offs, propose simpler approaches, and land increments that deliver value fast.
• •Design clean API contracts and evolve schemas/migrations; improve performance and reliability (query tuning, caching, job orchestration).
• •Partner with Product & Design from discovery to delivery: clarify user jobs, write lightweight RFCs/PRDs, and shape scope and milestones.
• •Keep UIs accessible and responsive; add solid error-handling and failure-mode UX.
• •Raise engineering standards: testing strategy, code quality, observability hooks, resilience patterns.
• •Partner with Support to investigate production issues, reduce UX papercuts, and turn learnings into fixes.
• •Engage with our open-source community (issues, discussions) to understand real-world needs and improve developer experience.
• •Participate in architecture discussions and code reviews; mentor teammates and improve patterns across the codebase.

• •Competitive salary range of $115,000 to $195,500 USD.
• •Remote work opportunity.
• •Opportunity to shape the next generation of AI products.
• •Collaborative work environment with a focus on continuous improvement.