# Backend Engineer
**Company:** [Twenty](https://hotfix.jobs/companies/twenty)
**Location:** New York, NY
**Experience:** 3+ years
**Skills:** Go, GraphQL, Rest, Neo4J, Aws Neptune, Nats, AWS, Docker, Kubernetes, CI/CD
**Posted:** 2026-05-19
> Build scalable Go backend services, high-performance APIs, and graph data models for real-time cyber and electromagnetic systems supporting national security missions.
## Job Description
## Responsibilities
- Design and implement scalable backend services in Go that improve operator decision-making and response
- Build high-performance APIs that power customer-facing workflows and internal platform capabilities
- Model complex relationships in graph databases and optimize schemas and queries for speed and clarity
- Implement event-driven systems (e.g., with NATS) to process real-time operational data streams
- Develop and maintain automated tests to protect correctness, security, and performance
- Build and operate microservices deployed on AWS, with an eye toward resilience and cost-aware scaling
- Create and improve CI/CD pipelines that enable fast, secure delivery of new capabilities
- Partner with cyber operations experts to translate domain needs into robust product features
- Collaborate with frontend engineers on API contracts and data structures
- Evaluate new technologies and patterns that could unlock better operational outcomes

## Requirements
- 3+ years of professional software development experience building backend (or full-stack) applications
- Strong proficiency with Go (Golang) and production services shipped with it
- Experience working with graph databases (Neo4j, AWS Neptune, or similar), including schema design and query performance
- Working knowledge of event-driven architectures and message queues/streaming systems
- Experience building and maintaining APIs (REST and/or GraphQL)
- Experience with cloud infrastructure, ideally AWS, and cloud-native deployment patterns
- Hands-on experience with containerization and microservices architectures
- Strong foundation in secure coding practices and reasoning about security tradeoffs
- Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience

## Nice-to-Haves
- Delivered software in defense, security, or other mission-critical environments
- Built systems for analysts, operators, or high-tempo users where speed and reliability matter
- Integrated AI/ML capabilities into production systems
- Experience with large-scale data processing and analytics workloads
- Contributed meaningfully to open-source projects
- Used observability tooling (metrics, tracing, logging) to debug and improve production systems

## Tech Environment
- Go (Golang), GraphQL/REST
- Graph databases (Neo4j, AWS Neptune) and complex graph schemas
- NATS and event-driven architectures
- AWS, microservices, containers
- CI/CD pipelines, automated testing frameworks, infrastructure-as-code patterns
- Monitoring and observability tools

## Benefits
- Health: Medical, dental, and vision plan options; life/AD&D and disability coverage
- Family: Paid parental leave (12 weeks for birthing parents, 4 for non-birthing, 6 for adoptive/foster/surrogacy)
- Vacation: Paid holidays and flexible PTO
- Retirement: 401(k) with pre-tax and Roth options; HSA/FSA options
- At the office: Commuter benefits, on-site garage parking, bike storage, building fitness center, desk setup stipend
**Apply:** https://hotfix.jobs/jobs/backend-engineer-at-twenty-48da6840-9db5-48c9-9a32-f65bf4c41607
**Canonical:** https://hotfix.jobs/jobs/backend-engineer-at-twenty-48da6840-9db5-48c9-9a32-f65bf4c41607