Twenty
Overview
Frontend Developer role at Twenty. Twenty is seeking a mid-level Frontend Engineer for an in-office position in its Arlington, VA office. The role involves building the next generation of cyber technologies that protect democracies worldwide. You will design and develop high-performance user interfaces that visualize complex cyber operation data in real-time, creating intuitive dashboards and interactive experiences that help operators quickly understand and act on critical information from graph-based cyber and electromagnetic systems. The team focuses on mission-critical solutions for U.S. national security, in cloud and on-premises environments. If you are passionate about solving complex technical challenges while making a direct impact on national security, we want to talk to you. Responsibilities
Design and implement scalable full-stack solutions across the 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 Create interactive data visualizations using D3.js, Chart.js, or similar libraries Implement efficient data models and queries using graph databases to support complex relationship mapping Implement responsive, accessible user interfaces that work across devices and screen sizes Create and maintain automated testing suites to ensure system integrity and performance Work with backend APIs and contribute to Go services when needed Collaborate with cyber operations experts to understand and implement features that enhance operator efficiency Research and evaluate new technologies that could enhance cyber operations capabilities Qualifications
Technical Skills & Experience 6+ years of professional software development experience with full-stack applications Expert knowledge of modern JavaScript/TypeScript, HTML5, and CSS3 Experience with frontend build tools, bundlers, and development workflows Proven experience with GraphQL API design and implementation Knowledge of web accessibility standards (WCAG) and performance optimization Experience with frontend testing frameworks (Jest, React Testing Library, Cypress) Experience with graph databases (Neo4j or similar) Proficiency with cloud platforms, preferably AWS Understanding of UX/UI principles and collaboration with design teams Strong understanding of security best practices and secure coding principles Education Bachelor's degree in Computer Science, Software Engineering, or related fields, or equivalent practical experience Security Requirements Must be eligible to obtain and maintain a U.S. Government security clearance Distinguishing Qualifications 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 Additional Skills Experience with Agile development methodologies System architecture and design experience Performance optimization and scalability experience Open-source contributions or personal projects demonstrating relevant skills Details
Seniority level: Mid-Senior level Employment type: Full-time Job function: Engineering and Information Technology Industries: Computer and Network Security
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Frontend Developer role at Twenty. Twenty is seeking a mid-level Frontend Engineer for an in-office position in its Arlington, VA office. The role involves building the next generation of cyber technologies that protect democracies worldwide. You will design and develop high-performance user interfaces that visualize complex cyber operation data in real-time, creating intuitive dashboards and interactive experiences that help operators quickly understand and act on critical information from graph-based cyber and electromagnetic systems. The team focuses on mission-critical solutions for U.S. national security, in cloud and on-premises environments. If you are passionate about solving complex technical challenges while making a direct impact on national security, we want to talk to you. Responsibilities
Design and implement scalable full-stack solutions across the 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 Create interactive data visualizations using D3.js, Chart.js, or similar libraries Implement efficient data models and queries using graph databases to support complex relationship mapping Implement responsive, accessible user interfaces that work across devices and screen sizes Create and maintain automated testing suites to ensure system integrity and performance Work with backend APIs and contribute to Go services when needed Collaborate with cyber operations experts to understand and implement features that enhance operator efficiency Research and evaluate new technologies that could enhance cyber operations capabilities Qualifications
Technical Skills & Experience 6+ years of professional software development experience with full-stack applications Expert knowledge of modern JavaScript/TypeScript, HTML5, and CSS3 Experience with frontend build tools, bundlers, and development workflows Proven experience with GraphQL API design and implementation Knowledge of web accessibility standards (WCAG) and performance optimization Experience with frontend testing frameworks (Jest, React Testing Library, Cypress) Experience with graph databases (Neo4j or similar) Proficiency with cloud platforms, preferably AWS Understanding of UX/UI principles and collaboration with design teams Strong understanding of security best practices and secure coding principles Education Bachelor's degree in Computer Science, Software Engineering, or related fields, or equivalent practical experience Security Requirements Must be eligible to obtain and maintain a U.S. Government security clearance Distinguishing Qualifications 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 Additional Skills Experience with Agile development methodologies System architecture and design experience Performance optimization and scalability experience Open-source contributions or personal projects demonstrating relevant skills Details
Seniority level: Mid-Senior level Employment type: Full-time Job function: Engineering and Information Technology Industries: Computer and Network Security
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