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Staff Software Engineer (Frontend)
role at
Twenty .
Twenty is seeking a Staff Frontend Engineer in its Arlington, VA office to help build the next generation of cyber technologies that protect democracies worldwide.
We're looking for someone with 8+ years of experience in developing scalable frontend applications, with deep expertise in React.js, TypeScript, and modern web technologies, plus proven leadership experience mentoring engineers and driving technical initiatives.
In this role, you'll architect and develop sophisticated, high-performance user interfaces that visualize complex cyber operation data in real-time, lead frontend technical design decisions, mentor junior engineers, and establish engineering best practices across our UI development. 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 leading engineering teams and making a direct impact on national security, we want to talk to you.
About the Company At Twenty, we're taking on one of the most critical challenges of our time: ensuring democracies prevail in the digital age. We develop revolutionary technologies that operate at the intersection of cyber and electromagnetic domains, where the speed and complexity of operations exceeds human cognition. Our team doesn't just solve problems – we deliver game‑changing outcomes that directly improve national security.
Role Details Technical Leadership & Architecture
Lead the design and architecture of scalable frontend solutions using React and TypeScript that enhance cyber operators' decision‑making and response capabilities
Evaluate and recommend engineering courses of action for new UI features and frontend system enhancements
Drive technical decision‑making for complex data visualization challenges and performance optimizations
Architect interactive data visualization systems using D3.js, Chart.js, or similar libraries for real‑time cyber operation data
Lead the implementation of responsive, accessible user interfaces that work across devices and screen sizes
Establish frontend architecture patterns and component libraries for consistent, maintainable code
Team Leadership & Mentorship
Mentor and provide technical guidance to junior frontend engineers, conducting thorough code reviews and knowledge transfer
Organize frontend development efforts and assign tasks across engineering teams to optimize workflow and delivery
Manage project timelines and coordinate cross‑functional collaboration with backend, product, design, and operations teams
Establish and maintain frontend engineering best practices, coding standards, and development processes
Lead technical discussions and facilitate architectural decision‑making sessions for UI/UX implementations
Development & Operations
Develop high‑performance React applications with advanced state management and optimization techniques
Implement efficient data models and queries using graph databases to support complex relationship mapping in the UI
Create and maintain comprehensive automated testing suites using Jest, React Testing Library, and Cypress
Contribute to Go backend services when needed to support full‑stack feature development
Design and implement CI/CD pipelines for frontend applications that enable rapid, secure deployment
Troubleshoot complex performance issues and lead incident response efforts for frontend systems
Research and evaluate emerging frontend technologies and frameworks that could enhance our cyber operations capabilities
Qualifications Technical Skills & Experience
8+ years of professional frontend software development experience
Expert‑level proficiency in React.js with demonstrated ability to write clean, efficient, and maintainable component architectures
Advanced knowledge of modern JavaScript/TypeScript, HTML5, and CSS3
Proven experience leading frontend technical projects and mentoring junior developers
Expert experience with frontend build tools, bundlers (Webpack, Vite), and modern development workflows
Deep knowledge of web accessibility standards (WCAG) and performance optimization techniques
Extensive experience with frontend testing frameworks (Jest, React Testing Library, Cypress, Playwright)
Experience with graph databases (Neo4j or similar) and understanding of graph query patterns
Proficiency with cloud platforms, preferably AWS
Strong understanding of UX/UI principles and proven collaboration with design teams
Expert understanding of security best practices, secure coding principles, and frontend security patterns
Experience with performance profiling, optimization, and scalability engineering for frontend systems
Leadership & Management Skills
Demonstrated experience mentoring frontend engineers and leading technical teams
Proven ability to organize development workflows and manage project delivery
Strong communication skills with ability to explain complex technical concepts to diverse audiences
Experience conducting thorough code reviews and establishing frontend development standards
Track record of driving technical decision‑making and architectural improvements
Education
Bachelor's degree in Computer Science, Software Engineering, or related fields, or equivalent practical experience
Security Requirements
Must be eligible to obtain a U.S. Government security clearance
Distinguishing Qualifications
Track record of delivering complex technical solutions in defense, security, or mission‑critical contexts
Experience with AI/ML integration in operational systems and visualization of AI outputs
Background in developing tools for cyber operators, security analysts, or similar high‑stakes environments
Previous experience as a frontend technical lead or engineering manager
Contributions to open‑source projects or technical communities, particularly in React or data visualization
Experience with real‑time data streaming and visualization in production environments
Experience with large‑scale data processing and analysis visualization
Job Metadata
Seniority level: Mid‑Senior level
Employment type: Full‑time
Job function: Engineering and Information Technology
Industries: Computer and Network Security
#J-18808-Ljbffr
Staff Software Engineer (Frontend)
role at
Twenty .
Twenty is seeking a Staff Frontend Engineer in its Arlington, VA office to help build the next generation of cyber technologies that protect democracies worldwide.
We're looking for someone with 8+ years of experience in developing scalable frontend applications, with deep expertise in React.js, TypeScript, and modern web technologies, plus proven leadership experience mentoring engineers and driving technical initiatives.
In this role, you'll architect and develop sophisticated, high-performance user interfaces that visualize complex cyber operation data in real-time, lead frontend technical design decisions, mentor junior engineers, and establish engineering best practices across our UI development. 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 leading engineering teams and making a direct impact on national security, we want to talk to you.
About the Company At Twenty, we're taking on one of the most critical challenges of our time: ensuring democracies prevail in the digital age. We develop revolutionary technologies that operate at the intersection of cyber and electromagnetic domains, where the speed and complexity of operations exceeds human cognition. Our team doesn't just solve problems – we deliver game‑changing outcomes that directly improve national security.
Role Details Technical Leadership & Architecture
Lead the design and architecture of scalable frontend solutions using React and TypeScript that enhance cyber operators' decision‑making and response capabilities
Evaluate and recommend engineering courses of action for new UI features and frontend system enhancements
Drive technical decision‑making for complex data visualization challenges and performance optimizations
Architect interactive data visualization systems using D3.js, Chart.js, or similar libraries for real‑time cyber operation data
Lead the implementation of responsive, accessible user interfaces that work across devices and screen sizes
Establish frontend architecture patterns and component libraries for consistent, maintainable code
Team Leadership & Mentorship
Mentor and provide technical guidance to junior frontend engineers, conducting thorough code reviews and knowledge transfer
Organize frontend development efforts and assign tasks across engineering teams to optimize workflow and delivery
Manage project timelines and coordinate cross‑functional collaboration with backend, product, design, and operations teams
Establish and maintain frontend engineering best practices, coding standards, and development processes
Lead technical discussions and facilitate architectural decision‑making sessions for UI/UX implementations
Development & Operations
Develop high‑performance React applications with advanced state management and optimization techniques
Implement efficient data models and queries using graph databases to support complex relationship mapping in the UI
Create and maintain comprehensive automated testing suites using Jest, React Testing Library, and Cypress
Contribute to Go backend services when needed to support full‑stack feature development
Design and implement CI/CD pipelines for frontend applications that enable rapid, secure deployment
Troubleshoot complex performance issues and lead incident response efforts for frontend systems
Research and evaluate emerging frontend technologies and frameworks that could enhance our cyber operations capabilities
Qualifications Technical Skills & Experience
8+ years of professional frontend software development experience
Expert‑level proficiency in React.js with demonstrated ability to write clean, efficient, and maintainable component architectures
Advanced knowledge of modern JavaScript/TypeScript, HTML5, and CSS3
Proven experience leading frontend technical projects and mentoring junior developers
Expert experience with frontend build tools, bundlers (Webpack, Vite), and modern development workflows
Deep knowledge of web accessibility standards (WCAG) and performance optimization techniques
Extensive experience with frontend testing frameworks (Jest, React Testing Library, Cypress, Playwright)
Experience with graph databases (Neo4j or similar) and understanding of graph query patterns
Proficiency with cloud platforms, preferably AWS
Strong understanding of UX/UI principles and proven collaboration with design teams
Expert understanding of security best practices, secure coding principles, and frontend security patterns
Experience with performance profiling, optimization, and scalability engineering for frontend systems
Leadership & Management Skills
Demonstrated experience mentoring frontend engineers and leading technical teams
Proven ability to organize development workflows and manage project delivery
Strong communication skills with ability to explain complex technical concepts to diverse audiences
Experience conducting thorough code reviews and establishing frontend development standards
Track record of driving technical decision‑making and architectural improvements
Education
Bachelor's degree in Computer Science, Software Engineering, or related fields, or equivalent practical experience
Security Requirements
Must be eligible to obtain a U.S. Government security clearance
Distinguishing Qualifications
Track record of delivering complex technical solutions in defense, security, or mission‑critical contexts
Experience with AI/ML integration in operational systems and visualization of AI outputs
Background in developing tools for cyber operators, security analysts, or similar high‑stakes environments
Previous experience as a frontend technical lead or engineering manager
Contributions to open‑source projects or technical communities, particularly in React or data visualization
Experience with real‑time data streaming and visualization in production environments
Experience with large‑scale data processing and analysis visualization
Job Metadata
Seniority level: Mid‑Senior level
Employment type: Full‑time
Job function: Engineering and Information Technology
Industries: Computer and Network Security
#J-18808-Ljbffr