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Staff Backend Engineer

mLabs

$180,000 - $250,000
Nov 4, 2025
New York, NY, US
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The company is building the global trade comment network, a core protocol that solves the trading discovery problem by connecting traders across different applications. This allows users to comment on their trades and earn a percentage of the copytrades they drive, addressing the massive increase in market size as traditional exchanges and fintech apps adopt decentralized trading.

Requirements

  • Deep experience with modern backend technologies like Node.js, TypeScript, AWS, and Postgres.
  • Proven experience designing and building out programmatic APIs that are robust, scalable, and developer-friendly.
  • Experience maintaining highly available infrastructure.

Responsibilities

  • Design robust backend REST APIs for usability and massive scale.
  • Optimize PostgreSQL queries, trace code paths for bottlenecks, and maximize performance from AWS infrastructure to ensure sub-500ms latency.
  • Build clean, maintainable, and well-tested backend code using best practices.
  • Building rapid, algo-sorted feeds of trades from followed users.
  • Surfacing good traders to follow across diverse metrics.
  • Large-scale on-chain metrics aggregation (PnL, win rate).
  • Improving rewards contracts and indexers.

Other

  • 5+ years at tech startups with millions of DAUs (Daily Active Users).
  • Appetite to work on complex products with autonomy and creative freedom.
  • Collaborate closely with the product team to define, prioritize, and build new features end-to-end.
  • Competitive pay ($180K - $250K) and generous equity.
  • Full medical, dental, vision insurance.
  • Flexible time off.