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Senior Front End Software Engineer Jobs in Washington, DC

Tandym Tech

Senior Front End Engineer

Vienna, VA · On-site

$123K - $169K/yr

A Fortune 50 Financial Institution is seeking a Senior Front-End Engineer to join their team. This engineer will help build and enhance enterprise-scale web applications, partnering with

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Senior Front End Software Engineer information

See Washington, DC salary details

$81K

$166.2K

$224.3K

How much do senior front end software engineer jobs pay per year?

As of Aug 24, 2026, the average yearly pay for senior front end software engineer in Washington, DC is $166,232.00, according to ZipRecruiter salary data. Most workers in this role earn between $138,700.00 and $190,800.00 per year, depending on experience, location, and employer.

What does a senior front end software engineer do?

A Senior Front End Software Engineer is responsible for designing, developing, and maintaining the user interface and experience of web applications. They work with languages like HTML, CSS, and JavaScript, as well as frameworks such as React, Angular, or Vue. Besides writing code, they often mentor junior developers, collaborate with designers and backend engineers, and help define best practices and technical standards for the front end team. Their goal is to ensure that web applications are visually appealing, responsive, and performant.

What are the key skills and qualifications needed to thrive as a senior front end software engineer?

To thrive as a Senior Front End Software Engineer, you need advanced proficiency in HTML, CSS, JavaScript, and modern frameworks like React or Angular, typically supported by a relevant degree and several years of experience. Familiarity with version control systems (such as Git), build tools (like Webpack), and testing libraries is essential, and certifications in front-end technologies can be advantageous. Strong problem-solving abilities, effective communication, and leadership skills help you collaborate with cross-functional teams and mentor junior developers. These skills ensure the delivery of scalable, user-friendly applications and contribute to the overall success and innovation of development projects.

What are some common challenges senior front end software engineers face when working on large-scale applications?

Senior Front End Software Engineers often encounter challenges such as maintaining code quality and consistency across large teams, ensuring optimal performance as the application scales, and coordinating effectively with backend and design teams. Managing technical debt and keeping up with rapidly evolving front-end technologies can also be demanding. Successful engineers use robust testing, code review processes, and clear communication to overcome these hurdles and deliver high-quality user experiences.

What are popular job titles related to Senior Front End Software Engineer jobs in Washington, DC?

For Senior Front End Software Engineer jobs in Washington, DC, the most frequently searched job titles are:

What job categories do people searching Senior Front End Software Engineer jobs in Washington, DC look for?

The top searched job categories for Senior Front End Software Engineer jobs in Washington, DC are:

Senior Front End Software Engineer jobs near you
Infographic showing various Senior Front End Software Engineer job openings in Washington, DC as of August 2026, with employment types broken down into 1% As Needed, 82% Full Time, 13% Part Time, and 4% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $166,232 per year, or $79.9 per hour.

Senior Frontend Software Engineer

Twenty

Arlington, VA • On-site

Full-time

Re-posted 23 days ago

Job description

Job Summary:
Twenty Technologies is a company focused on industrializing offensive cyber operations for the U.S. and its allies. The Senior Frontend Software Engineer will build mission-critical interfaces for visualizing real-time cyber operation data, contributing to frontend architecture and collaborating with cross-functional teams.
Responsibilities:
• Build sophisticated React/TypeScript features and components that operate reliably at scale.
• Implement real-time UI experiences for complex cyber operation data, optimizing for speed and clarity.
• Contribute to frontend architecture and design decisions alongside your teammates.
• Build and maintain interactive visualization components (e.g., graphs, timelines, streaming views).
• Write and maintain automated tests across unit, integration, and end-to-end layers.
• Participate actively in code review — giving and receiving feedback that raises the quality bar.
• Identify and address performance issues, technical debt, and reliability gaps proactively.
• Collaborate with design, product, backend, and operations to deliver well-integrated features.
• Support engineers through pairing and practical feedback on their work.
Qualifications:
Required:
• You have 5–8 years of professional frontend software development experience.
• You have strong, production-tested expertise in React.js and TypeScript.
• You have solid command of modern web fundamentals (JavaScript/TypeScript, HTML, CSS).
• You have experience building and shipping features for performance at scale (profiling, optimization, rendering strategies).
• You have hands-on experience with automated testing frameworks (e.g., Vitest, React Testing Library, Playwright or Cypress).
• You have experience with state management patterns and libraries (e.g., Redux, Zustand, or React Query).
• You have experience with modern build tooling (e.g., Vite or Webpack) and CI/CD pipelines.
• You collaborate effectively with product and design to deliver high-quality UX.
• You have strong command of Git in a professional engineering environment, including branch workflows, code review practices, and CI integration.
• You have a Bachelor's degree in CS/Engineering (or equivalent practical experience).
Preferred:
• You have experience with complex data visualization (e.g., D3.js, Chart.js, or similar).
• You have exposure to graph databases or graph query patterns (e.g., Neo4j).
• You have experience with real-time streaming data and live system visualization.
• You have worked in defense, security, or other mission-critical domains.
• You have built UI experiences that surface AI/ML outputs in operational workflows.
• You have experience contributing to component libraries or design systems (e.g., Storybook).
Company:
We apply world-class software engineering to a warfighting domain of persistent conflict. Founded in 2024, the company is headquartered in Arlington, USA, with a team of 51-200 employees. The company is currently Early Stage.

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