Associate Full Stack Engineer

Twenty • Washington, DC

73d

About The Position

Twenty is seeking an associate Full Stack Engineer for an in-office position in its Arlington, VA office to help build the next generation of cyber technologies that protect democracies worldwide. We're looking for someone with 4+ years of experience in developing scalable applications, particularly using React.js, Golang, graph databases, and cloud-native technologies. In this role, you'll design and develop high-throughput systems that process real-time operational data, work with complex graph schemas, and create GraphQL APIs that form the backbone of our cyber and electromagnetic capabilities. You'll join a world-class product and engineering team that delivers mission-critical solutions for U.S. national security, working in both cloud and on-premises environments to build systems that operate at machine speed. If you're passionate about solving complex technical challenges while making a direct impact on national security, we want to talk to you.

Requirements

• 4+ years of professional software development experience with full-stack applications
• Strong proficiency in React.js and modern JavaScript/TypeScript development
• Experience with Go (Golang) backend development
• Proven experience with GraphQL API design and implementation
• Working knowledge of event-driven architectures and message queues
• Experience with graph databases (Neo4j or similar)
• Proficiency with cloud platforms, preferably Google Cloud Platform
• Experience with containerization and microservices architectures
• Strong understanding of security best practices and secure coding principles

Nice To Haves

• Track record of delivering complex technical solutions in defense or security contexts
• Experience with AI/ML integration in operational systems
• Background in developing tools for cyber operators or security analysts
• Experience with large-scale data processing and analysis
• Experience with Agile development methodologies
• System architecture and design experience
• Performance optimization and scalability experience
• Open-source contributions or personal projects demonstrating relevant skills

Responsibilities

• Design and implement scalable full-stack solutions across our React frontend and Go backend services that enhance cyber operators' decision-making and response capabilities
• Develop high-performance, real-time user interfaces that process and visualize complex cyber operation data streams
• Build and optimize GraphQL APIs that enable rapid data access and manipulation
• Implement efficient data models and queries using Neo4j to support complex relationship mapping
• Design and maintain event-driven architectures using NATS for real-time communication between system components
• Create and maintain automated testing suites to ensure system integrity and performance
• Design and implement microservices architectures deployed on Google Cloud Platform
• Develop and maintain CI/CD pipelines that enable rapid, secure deployment of new capabilities
• Work closely with cyber operations experts to understand and implement features that enhance operator efficiency
• Research and evaluate new technologies that could enhance our cyber operations capabilities

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: Bachelor's degree