Twenty

Senior Backend Software Engineer

Twenty
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16 hours ago

Base Salary

$159k - $263k/yr

Responsibilities

  • Design and implement scalable backend services in Go.
  • Build high-performance APIs for customer-facing workflows and internal platform capabilities.
  • Design and optimize graph database schemas and queries.
  • Implement event-driven systems that process real-time operational data streams.
  • Develop automated tests covering correctness, security, and performance.
  • Build and operate AWS-deployed microservices and improve resilience and cost-aware scaling.
  • Create and improve CI/CD pipelines and collaborate with frontend engineers and cyber operations experts.

Requirements

  • 5+ years of professional software development experience building backend or full-stack applications.
  • Strong proficiency with Go and production experience shipping Go services.
  • Experience with graph databases such as Neo4j or AWS Neptune, including schema design and query performance.
  • Working knowledge of event-driven architectures and message queues or streaming systems.
  • Experience building and maintaining REST and/or GraphQL APIs.
  • Experience with cloud infrastructure, ideally AWS, plus containerization and microservices architectures.
  • Strong secure coding foundation and ability to reason about security tradeoffs.
  • Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
  • U.S. citizenship is required; some positions may require eligibility to obtain and maintain a U.S. government security clearance.
  • Preferred qualifications include defense or security software experience, mission-critical systems experience, AI/ML production integration, large-scale data processing, open-source contributions, and observability experience.

Benefits

  • Medical, dental, vision, life/AD&D, and disability coverage options.
  • Paid parental leave, including 12 weeks for birthing parents, 4 weeks for non-birthing parents, and 6 weeks for adoptive, foster, or intended parents through surrogacy.
  • Paid holidays and flexible PTO.
  • 401(k) with pre-tax and Roth options, HSA/FSA options, and dependent care FSA.
  • Full-time, on-site role in Arlington, Virginia; benefits vary by location, role, and eligibility.

Tech Stack

AWSGoGraphQLNeo4j

Categories

Twenty

About Twenty

51-200 employees
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