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Senior Backend Engineer

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twentyAI

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Location:
United States , New York City

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

210000.00 - 230000.00 USD / Year
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Job Description:

Senior Backend Engineer Series A | Fintech | NYC | Hybrid We’re working with a Series A fintech company building the infrastructure that powers billing, payments, and revenue operations for modern B2B businesses. They’re hiring a Senior Backend Engineer to design and scale the core systems that sit at the heart of their product. This is a high-impact role for someone who enjoys working on revenue-critical systems where accuracy and reliability really matter.

Job Responsibility:

  • Build and scale backend systems that process high-volume transactional data
  • Design event-driven architectures and streaming pipelines
  • Own infrastructure where correctness and uptime are critical
  • Make architectural decisions around performance, cost, and scalability
  • Work closely with product and customers to solve real problems

Requirements:

  • Experience building and scaling backend systems in production
  • Strong understanding of distributed systems and event-driven architecture
  • Experience with data systems, pipelines, or high-throughput environments
  • Comfortable owning infrastructure and making tradeoffs at scale
  • Strong backend fundamentals in a typed language or similar

Nice to have:

  • Experience with streaming systems or pub/sub architectures
  • Familiarity with cloud infrastructure and infra-as-code
  • Experience working in early-stage or high-growth environments
What we offer:

Equity

Additional Information:

Job Posted:
May 03, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
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