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Third Chair (YC X25)

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Senior Software Engineer (Backend)

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What makes you a good fit:

  • 4+ years of professional work experience developing production level Node.js or Go backends.
  • Strong experience with relational DBMSs like PostgreSQL and AWS services such as ECS, RDS, Lambda functions, CloudWatch, Elasticache etc.
  • Strong understanding of System Design principles for production-grade enterprise systems.
  • Well integrated with AI coding tools like Claude, Codex etc.
  • Comfortable with US timezones.

What makes you a great fit:

  • Past experience with OpenAI APIs for completions, function calling and building context aware assistants.
  • Proven experience working with very large datasets and high-throughput systems and working with OLAP databases like Redshift.
  • Strong sense of cost optimization strategies, system design, and building efficient API stacks.
  • Building multi-agent systems using frameworks like CrewAI or such.

Benefits:

  • Work from anywhere - We're a distributed team across multiple timezones with a focus on outputs instead of location or working hours.

• Generous PTO policy.

• Competitive pay bracket.

  • Equity at a fast growing YC backed co in a disruptive market.

Please read before applying:

  • Please include a note where you answer in not more than 100 words: ‘What is the most complex backend feature you’ve developed where you were the sole or primary developer. Mention the technical details, peak production load etc.’
  • Applications that don’t include the note or meet the minimum requirements will not be considered.
    • We review every application and have not more than 4 rounds in the process with a decision within 14 days of applying.

Skills

What Senior Backend jobs ask for — and how much of it you have →
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See also

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