Senior Frontend Architect for Real-Time Cyber Ops UI

Twenty; New York (NY); On-site; USD 140,000 - 200,000; Full time

Benefits offered by this job

Health benefits

Parental leave

Vacation

401(k) plan

Job summary

Twenty Technologies in Arlington, VA, is seeking a senior frontend engineer to own the frontend architecture for mission-critical operator experiences. You will build high-performance React/TypeScript interfaces and mentor engineers in a fast, collaborative environment.

You’ll collaborate with backend, product, design, and operations to ship real-time capabilities for on-prem and cloud deployments, with a strong focus on performance, reliability, and secure engineering practices.

Qualifications

• 8+ years of professional frontend software development experience.
• Deep expertise building production React.js applications with TypeScript.
• Strong command of modern web fundamentals (JavaScript/TypeScript, HTML, CSS).
• Led frontend technical initiatives and mentored engineers through delivery and growth.
• Experience building for performance at scale (profiling, optimization, rendering strategies).
• Experience with automated testing practices and frameworks (e.g., Vitest, React Testing Library, Playwright or Cypress for E2E).
• Hands‑on experience with state management patterns and libraries (e.g., Redux, Zustand, or React Query).
• Strong collaboration skills with product and design to deliver excellent UX.
• Strong command of Git in a professional engineering environment, including branch workflows, code review practices, and CI integration.
• Bachelor’s degree in CS/Engineering (or equivalent practical experience).

Responsibilities

• Architect and build sophisticated React/TypeScript applications that operate smoothly at scale.
• Design real-time UI experiences for complex cyber operation data, optimizing for speed and clarity.
• Lead frontend technical architecture and design decisions.
• Build and evolve interactive visualization systems (e.g., graphs, timelines, streaming views).
• Establish reusable frontend architecture patterns and component libraries for consistency and velocity.
• Raise engineering excellence via code review, standards, testing strategy, and performance practices.
• Mentor junior engineers through pairing, feedback, technical coaching, and knowledge transfer.
• Coordinate execution across design, product, backend, and operations to deliver end-to-end features.
• Troubleshoot production issues, lead frontend performance investigations, and improve reliability over time.

Skills

Frontend experience

React.js

TypeScript

Web fundamentals

Mentoring

Performance optimization

Testing frameworks

State management

Git & CI

CS/Engineering degree

Education

CS/Engineering degree

Tools

Redux

Zustand

React Query

D3.js

Chart.js

Job description

Twenty Technologies in Arlington, VA, is seeking a senior frontend engineer to own the frontend architecture for mission-critical operator experiences. You will build high-performance React/TypeScript interfaces and mentor engineers in a fast, collaborative environment.

You’ll collaborate with backend, product, design, and operations to ship real-time capabilities for on-prem and cloud deployments, with a strong focus on performance, reliability, and secure engineering practices.