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Helicone (YC W23) Logo

Senior Software Engineer

Helicone (YC W23)

Salary not specified
Sep 20, 2025
San Francisco, CA, US
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Helicone.ai is looking to enhance the LLM developer experience by improving the performance, reliability, and usability of their platform, while also scaling their impact in AI observability.

Requirements

  • Strong TypeScript Expertise: Deep experience working with TypeScript, which constitutes the majority of Helicone's codebase.
  • Database Proficiency: Experience with SQL databases and tools like ClickHouse, Supabase, and Postgres.
  • Cloud and Deployment: Familiarity with Kubernetes, Cloudflare Workers, Docker, and cloud platforms like AWS or GCP.
  • Problem Solving at Scale: Experience designing systems to handle high-throughput, real-time data processing.
  • AI and LLM Knowledge: Familiarity with LLMs, their APIs, and the current AI landscape.
  • Languages: TypeScript, Python
  • Services: Docker, Postgres, ClickHouse, Cloudflare Workers, Redis

Responsibilities

  • Architect and Develop Solutions: Design and implement scalable systems that enhance the performance, reliability, and usability of Helicone’s platform.
  • Lead Backend Development: Oversee core services, including: Frontend services (Node.js), Proxy worker (Wrangler/Cloudflare), Application database (Supabase), Analytics database (ClickHouse)
  • Optimize data pipelines to handle large-scale, real-time observability workloads.
  • Drive Technical Excellence: Advocate for best practices in code quality, testing, and architecture to ensure maintainable and efficient systems.
  • Collaborate Across Teams: Work with product managers, designers, and community contributors to develop features, integrations, and documentation.
  • Contribute to the Community: Engage with Helicone’s open-source community to gather feedback, improve the platform, and foster innovation.

Other

  • Leadership and Mentorship: Proven ability to guide and mentor engineers, fostering growth and collaboration.
  • Adaptability and Ownership: A proactive mindset with the ability to own and deliver on complex projects end-to-end.
  • Technical Leadership: Your expertise will guide the team, influence architecture decisions, and ensure the platform's success.
  • Collaboration and Impact: Work closely with founders, engineers, and the community to drive meaningful improvements.
  • Dynamic Culture: Weekly team lunches, monthly hackathons, and an environment where innovation thrives.