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TwentyTwentyArlington, VA

Staff Backend Engineer

Designs and builds high-throughput backend services processing real-time operational data for national security applications. Requires 10+ years experience, expertise in Golang or similar, distributed systems, AWS, and strong leadership in architecture and mentoring.

Salary not listed
On-site10+ YOEBackend Engineering

About the role

Responsibilities

  • Architect and build high-throughput backend services that process real-time operational data.
  • Lead technical design reviews and choose pragmatic approaches for new features and system improvements.
  • Design event-driven and distributed systems that are resilient, observable, and performance-tuned.
  • Define stable APIs for internal and external consumers, partnering with frontend for seamless integration.
  • Improve engineering excellence through code reviews, standards, testing strategy, and incident practices.
  • Build and maintain CI/CD workflows that enable rapid, secure delivery.
  • Troubleshoot complex production issues, lead incident response, and drive durable fixes.
  • Partner with product and operational stakeholders to translate needs into deliverable technical plans.
  • Contribute to technical strategy and roadmap planning across backend services.
  • Support hiring by participating in interviews and helping define what “great” looks like.

Requirements

Must Have

  • 10+ years building scalable backend systems in production environments.
  • 4+ years of experience in Golang, or 4+ years writing server-side business logic in an object-oriented language (Java, Kotlin, C#, Python) or systems language (C, C++, Rust) with strong system design aptitude.
  • Led technical initiatives end-to-end, including architecture, execution, and delivery.
  • Experience designing distributed systems (e.g., event-driven architectures, messaging, consistency tradeoffs).
  • Built cloud-native services and operated them in production (AWS preferred).
  • Strong security fundamentals: secure coding, threat modeling, and defensible design choices.
  • Track record mentoring engineers through code reviews, technical guidance, and feedback.
  • Strong communication skills and can align teams around clear technical decisions.

Nice To Have

  • Experience designing data models and queries in graph databases (e.g., Neo4j, AWS Neptune).
  • Used relational databases (Postgres, MySQL, MariaDB) to solve business problems and reason about query performance.
  • Worked on defense, intelligence, or security-focused products with real operational users.
  • Shipped large-scale data processing systems (streaming, near-real-time analytics, or similar).
  • Integrated ML/AI capabilities into production systems in a practical, measurable way.
  • Open-source contributions or personal projects that demonstrate strong engineering craft.

Tech Environment

  • Go (Golang) business logic
  • AWS and hybrid cloud/on-prem deployments
  • Event-driven messaging (e.g., NATS)
  • Containers and orchestration (Docker, Kubernetes)
  • GraphQL and service-to-service APIs
  • Graph databases (Neo4j, AWS Neptune) and complex relationship data

Skills

GoAWSKubernetesDockerGraphQLNeo4JPostgresNatsJavaRust
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