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Contract Frontend Developer Jobs in Vienna, VA (NOW HIRING)

Booz Allen Hamilton

Front End Developer

Fort Belvoir, VA · On-site

$69K - $158K/yr

Front End Developer The Opportunity: As a full stack developer, you can resolve a problem with a ... as well as contract-specific affordability and organizational requirements. The projected ...

Booz Allen Hamilton, Inc.

Front End Developer

Mclean, VA · On-site

$69K - $158K/yr

Front End Developer The Opportunity: As a full stack developer, you can resolve a problem with a ... as well as contract-specific affordability and organizational requirements. The projected ...

Beyond SOF

Front End Developer (TS/SCI)

Reston, VA · On-site

$108K - $126K/yr

Front End Developer (TS/SCI) * Reston, VA, USA * Full-time * Clearance: Top Secret/SCI This is an ... DoD 8570 Compliant Security+ or CISSP Certification prior to starting on contract * Experience with ...

Booz Allen Hamilton

Front End Developer

Mclean, VA · On-site

$69K - $158K/yr

Job Number: R0243843 Front End Developer The Opportunity: As a full stack develop er, you can ... as well as contract-specific affordability and organizational requirements. The projected ...

Booz Allen Hamilton

Front End Developer

Mclean, VA · On-site

$69K - $158K/yr

Job Number: R0245645 Front End Developer The Opportunity: As a full stack develop er, you can ... as well as contract-specific affordability and organizational requirements. The projected ...

Amentum

Front--End Developer (Mid) TS/SCI

Arlington, VA · On-site

$119K - $139K/yr

Amentum is searching for a Front-End Developer to join our team in Arlington, VA. You will be ... Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract ...

Pae

Front--End Developer (Mid) TS/SCI

Arlington, VA · On-site

$119K - $139K/yr

Essential Responsibilities: The Front-End Developer is responsible for * Develop ... Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract ...

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Showing results 21-40

All JobsContract Frontend Developer JobsContract Frontend Developer Jobs in Vienna, VA

Contract Frontend Developer information

See Vienna, VA salary details

$42.7K

$110.8K

$156.1K

How much do contract frontend developer jobs pay per year?

As of Aug 9, 2026, the average yearly pay for contract frontend developer in Vienna, VA is $110,821.00, according to ZipRecruiter salary data. Most workers in this role earn between $104,400.00 and $121,400.00 per year, depending on experience, location, and employer.

What is a contract frontend developer?

Contract Frontend Developers are professionals hired on a temporary or project basis to build and maintain the user-facing parts of websites and web applications. They specialize in technologies like HTML, CSS, and JavaScript, and often work with frameworks such as React, Angular, or Vue.js. Unlike full-time employees, contract frontend developers typically work for a set duration or until the completion of specific tasks. Their flexible arrangement allows companies to scale development efforts according to project needs.

What are some common challenges contract frontend developers face when joining new projects, and how can they adapt quickly?

Contract Frontend Developers often need to ramp up rapidly with unfamiliar codebases and team workflows. Adapting quickly involves proactive communication with team members, thorough review of project documentation, and leveraging onboarding resources provided. Familiarity with popular frameworks and version control systems helps, but flexibility and a willingness to ask clarifying questions are key. Building rapport with the team and participating in code reviews can also accelerate the adaptation process.

What is the difference between Contract Frontend Developer vs Contract Web Developer?

AspectContract Frontend DeveloperContract Web Developer
Required SkillsHTML, CSS, JavaScript, frameworks like React or AngularHTML, CSS, JavaScript, backend integration, server-side scripting
Work EnvironmentFront-end focused, UI/UX design, client-side developmentFull-stack or backend focus, server management, database interaction
Industry UsageWeb applications, mobile apps, SaaS platformsWebsites, web applications, e-commerce platforms

Contract Frontend Developers specialize in creating the visual and interactive parts of websites and applications, focusing on client-side technologies. Contract Web Developers may handle both front-end and back-end tasks, working on the entire web development stack. While both roles require similar credentials, the Contract Frontend Developer role is more focused on UI/UX and front-end frameworks, making it ideal for projects emphasizing user interface design and interactivity.

What are the key skills and qualifications needed to thrive as a contract frontend developer?

To thrive as a Contract Frontend Developer, you need strong proficiency in HTML, CSS, JavaScript, and a solid understanding of modern frontend frameworks like React, Vue, or Angular, often supported by a relevant degree or bootcamp experience. Familiarity with version control systems (such as Git), build tools (Webpack, npm), and responsive design practices is typically required. Excellent problem-solving, communication, and time management skills help you adapt quickly and collaborate effectively with remote teams or multiple clients. These skills ensure timely, high-quality project delivery and seamless integration into diverse development environments.
What are the most commonly searched types of Frontend Developer jobs in Vienna, VA? The most popular types of Frontend Developer jobs in Vienna, VA are:
What are popular job titles related to Contract Frontend Developer jobs in Vienna, VA? For Contract Frontend Developer jobs in Vienna, VA, the most frequently searched job titles are:
What job categories do people searching Contract Frontend Developer jobs in Vienna, VA look for? The top searched job categories for Contract Frontend Developer jobs in Vienna, VA are:
What cities near Vienna, VA are hiring for Contract Frontend Developer jobs? Cities near Vienna, VA with the most Contract Frontend Developer job openings:
Contract Frontend Developer jobs near you
Infographic showing various Contract Frontend Developer job openings in Vienna, VA as of July 2026, with employment types broken down into 1% As Needed, 62% Full Time, 19% Part Time, 1% Temporary, and 17% Contract. Highlights an 81% Physical, 2% Hybrid, and 17% Remote job distribution, with an average salary of $110,821 per year, or $53.3 per hour.

AI Front-End Developer, Senior

Booz Allen Hamilton, Inc.

Washington, DC • On-site, Remote

$130K - $171K/yr

Full-time

Medical, Life, Retirement, PTO

Re-posted yesterday

Booz Allen Hamilton rating

8.9

Company rating: 8.9 out of 10

Based on 49 frontline employees who took The Breakroom Quiz

9th of 72 rated business consultants

Job description


Remote Work:
Yes
Job Number:
R0243891
Location:
Washington,DC,US
Share job via:
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AI Front-End Developer, Senior
The Opportunity:
GRACE is ARPA-H's production AI assistant. We've shipped the first generation of agentic AI, and now we're moving quickly to go deeper: user-built agents, multi-agent orchestration, and a platform teams can extend themselves on. We are a small, startup-minded team that ships fast and owns what we build end-to-end. We are looking for a senior front-end-leaning full-stack developer to own the experience layer of GRACE: the chat interface, the rich rendering of AI output, and the interaction patterns that make an agentic system feel trustworthy and fast. The front end is where users decide whether GRACE is reliable and worth using. You will own that surface, while operating within the privacy, security, and responsible-use requirements of our mission and the federal environment.
What You'll Work On:
  • Own the GRACE front end end-to-end, including the Chainlit-based chat application and the React or TypeScript components and interaction patterns layered on top of it.
  • Own the rendering pipeline for rich AI output, including streaming responses, markdown, code blocks, tables, citations, diagrams with Mermaid, maps with GeoJSON, and generated images, so that complex output is legible and trustworthy.
  • Design and build interaction patterns for agentic workflows, including tool-call progress, multi-step reasoning states, human-in-the-loop confirmations, and graceful handling of long-running or partial responses.
  • Apply industry best practices and emerging front-end patterns specific to agentic AI, including streaming UX, agent and tool-call visibility, and interfaces for user-built and multi-agent workflows.
  • Own client-side state, streaming, and real-time updates, including WebSocket or SSE, so the interface stays responsive while the backend is still working.
  • Build file upload, document preview, and results-display experiences for GRACE's knowledge search and research workflows.
  • Work close to the application layer in Python where Chainlit lives and customize rendering, session handling, and interaction behavior beyond what the framework gives you out of the box.
  • Partner with backend engineers on the API contract the front end consumes, shape it so it serves the user experience, and implement the glue when the boundary is fuzzy.
  • Implement front-end-facing integrations with GRACE's data sources and APIs, including LLM provider outputs, knowledge search, and tool results.
  • Write readable, tested, reviewed, and documented production-quality code across the stack.
  • Work hand-in-hand with our human-centered researcher and designer to turn user insights and design intent into interfaces that actually serve the user, not just approximations of the mockup.
  • Translate research findings and usability feedback into concrete UI changes and close the loop by shipping, measuring, and iterating.
  • Treat design fidelity, interaction detail, and edge-case behavior as part of the job and sweat the small things because they are what users feel.
  • Own front-end performance from the user's perspective, including time-to-first-token, perceived latency, and smooth streaming under real network conditions
  • Ensure accessibility, including Section 508 and WCAG, is built in, not bolted on.
  • Build front-end observability, including client-side error tracking, usage analytics, and the instrumentation needed to know what users actually do.
  • Rapidly prototype and iterate on new GRACE capabilities and ship, measure, and improve.
  • Establish and improve front-end coding standards, design review, and testing practices.
  • Communicate technical decisions clearly to both engineers and non-engineers.
  • Mentor and unblock other engineers with a bias toward ownership and speed.
  • Ensure strong privacy, security, and compliance in all UI, data handling, and integrations.

Join us. The world can't wait.
You Have:
  • 7+ years of experience in software engineering, building and operating production web applications, including on the front end
  • 5+ years of experience designing and building for AI, LLM, chat, or agentic products, including streaming responses, citation and source display, tool-call visibility, and building for uncertain or probabilistic output
  • 5+ years of experience with industry best practices and front-end patterns specific to agentic AI, including streaming UX, agent and tool-call visibility, human-in-the-loop, and multi-agent workflows
  • 5+ years of experience with real-time UI patterns such as streaming responses, WebSockets or SSE, and optimistic or partial rendering, including web performance, cross-browser behavior, and front-end testing
  • Experience with TypeScript or JavaScript and React and its modern ecosystem, including hooks, state management, and component architecture
  • Experience in a backend language such as Python and comfort operating across the client or server boundary
  • Experience shipping complex, interactive UIs in high-velocity environments where you owned features end-to-end using CSS and responsive design fundamentals
  • Ability to communicate, give and receive feedback well, and be a self-starter with a high bar and high sense of urgency
  • Bachelor's degree in Computer Science

Nice If You Have:
  • Experience with Chainlit or similar conversational or LLM front-end frameworks, including customizing rendering and interaction behavior
  • Experience with rich client-side rendering, including markdown, syntax highlighting, Mermaid diagrams, data visualization, or map rendering
  • Experience working directly with UX researchers and designers in a tight build-measure-learn loop
  • Experience in Microsoft Azure and within CI/CD pipelines, including deploying and operating builds
  • Experience with design systems and component libraries at scale
  • Experience in startup or early-stage environments with ambiguity, rapid iteration, and wearing multiple hats
  • Experience in big tech or scaled tech organizations building customer-facing products
  • Ability to pay strict attention to detail
  • Master's degree in a Computer Science related field

Compensation
At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page.
Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $99,000.00 to $225,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen's total compensation package for employees. This posting will close within 90 days from the Posting Date.
Identity Statement
As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud.
Candidate AI Usage Policy
AI is a part of our daily work at Booz Allen, and we are committed to the responsible and ethical use of AI tools. However, we want to ensure a fair candidate process based on your own skills and knowledge. As part of this commitment, the use of artificial intelligence (AI) or other tools to assist with responses during interviews (whether in-person or virtual) is prohibited unless permission is explicitly provided.
Work Model
Our people-first culture prioritizes the benefits of collaboration, whether it occurs in person or virtually. To support engagement and effective communication, employees working virtually are generally expected to have their cameras on during meetings.
  • Remote: If this position is listed as remote, there may still be occasions when you are required to work in person at a Booz Allen or customer facility.
  • Hybrid: If this position is listed as hybrid, you will be expected to work from a Booz Allen facility frequently, in alignment with leadership expectations and the needs of the role. You may also be required to work from or visit a customer facility.
  • Onsite: If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role.

Commitment to Non-Discrimination
All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.
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About Booz Allen Hamilton

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Booz Allen Hamilton is a leading provider of management and technology consulting services to the US government in defense, intelligence, and civil markets. Headquartered in McLean, Virginia, the firm also serves major corporations, institutions, and not-for-profit organizations. Founded in 1914 by Edwin G. Booz, the company has a long-standing tradition of helping clients achieve success by delivering a wide range of consulting services that include strategic planning, human capital and learning, communication, systems development, and others. The company's mission is to empower people to change the world, and it has a reputation for maintaining the highest standards of integrity and-excellence.

Industry

It services

Company size

10,000+ Employees

Headquarters location

McLean, VA, US

Year founded

1914

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