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Web App Developer Jobs (NOW HIRING)

Sentar Inc.

Web App Developer - Senior

Chantilly, VA · On-site

They are seeking a Senior Web App Developer to design, build, and maintain high-quality web-based applications that support forensic and investigative missions. Responsibilities : • Design, develop ...

New

Sentar

Web App Developer - Senior

Chantilly, VA · On-site

Sentar is seeking a Web App Developer - Senior in Chantilly, VA! Role Description: Sentar is seeking an experienced Web Application Developer to design, build, and maintain high-quality web-based ...

New

Sentar

Web App Developer - Senior

Chantilly, VA

Sentar is seeking a Web App Developer - Senior in Chantilly, VA! Role Description: Sentar is seeking an experienced Web Application Developer to design, build, and maintain high-quality web-based ...

New

Halvik

Jr Web App Developer

Vienna, VA · Remote

$75K - $90K/yr

Bachelor's degree in Computer Science, Information Systems, Software Engineering, or related field (or equivalent experience) Years of Experience: 1-3 years in web application development Halvik ...

Halvik

Jr Web App Developer

Vienna, VA · On-site

$75K - $90K/yr

Implement assigned web development tasks under supervision * Assist with defect resolution and ... Cloud & DevOps: Familiarity with AWS cloud infrastructure and GitLab pipelines. * Agile ...

Infotech Sourcing

Web Developer III

Manhattan, NY · Remote

Infrastructure Engineering - Web Developer III Summary We're seeking experience a software ... Your role will be to grow our app simulation pipeline for training and evaluating computer-use ...

Infotech Sourcing

Web Developer III

Manhattan, NY · On-site

Infrastructure Engineering - Web Developer III Summary We're seeking experience a software ... Your role will be to grow our app simulation pipeline for training and evaluating computer-use ...

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How much do web app developer jobs pay per year?

As of Jun 3, 2026, the average yearly pay for web app developer in the United States is $98,514.00, according to ZipRecruiter salary data. Most workers in this role earn between $79,000.00 and $119,500.00 per year, depending on experience, location, and employer.

What is a Web App Developer job?

A Web App Developer is responsible for designing, building, and maintaining web applications that run in a browser. They work with front-end and back-end technologies, such as HTML, CSS, JavaScript, databases, and server-side frameworks. Their role includes coding, debugging, optimizing performance, and ensuring security. Web App Developers often collaborate with designers, product managers, and other developers to create user-friendly and scalable applications.

What are the key skills and qualifications needed to thrive in the Web App Developer position, and why are they important?

To thrive as a Web App Developer, a strong grasp of HTML, CSS, JavaScript, and at least one back-end language (such as Python, Ruby, or Node.js) is generally required, often supported by a degree in computer science or related experience. Familiarity with frameworks like React or Angular, version control systems such as Git, and web development certifications (like those from freeCodeCamp or Microsoft) are highly valued. Problem-solving, attention to detail, and effective communication are essential soft skills for collaborating with teams and clients. These skills enable developers to build user-friendly, reliable applications and contribute efficiently within dynamic, cross-disciplinary teams.

What are the typical responsibilities of a Web App Developer on a day-to-day basis?

As a Web App Developer, your daily tasks often include writing clean, efficient code for both front-end and back-end components, debugging and troubleshooting issues, and participating in code reviews. You’ll frequently collaborate with designers, product managers, and other developers to design user interfaces, implement new features, and refine user experiences. Regular communication and agile development meetings are also a common part of the workflow. Staying updated with the latest technologies and best practices is important to ensure you deliver high-quality, maintainable applications.
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Web App Developer jobs near you
Infographic showing various Web App Developer job openings in the United States as of May 2026, with employment types broken down into 1% Locum Tenens, 1% As Needed, 41% Full Time, 54% Part Time, and 3% Contract. Highlights an 80% Physical, 5% Hybrid, and 15% Remote job distribution, with an average salary of $98,514 per year, or $47.4 per hour.
Web App Developer - Senior

Web App Developer - Senior

Sentar Inc.

Chantilly, VA • On-site

Full-time

Posted yesterday

Job description

Job Summary:
Sentar Inc. is an employee-owned company focused on cybersecurity, intelligence, analytics, and systems engineering. They are seeking a Senior Web App Developer to design, build, and maintain high-quality web-based applications that support forensic and investigative missions.
Responsibilities:
• Design, develop, test, and deploy robust web-based applications using industry best practices.
• Translate UI/UX wireframes into responsive, functional, and maintainable code.
• Perform ongoing maintenance, testing, and troubleshooting to ensure optimal system performance.
• Document applications, services, and environments to support long-term sustainability and knowledge sharing.
• Configure, administer, and manage web application tools and platforms.
• Develop and maintain content for enterprise web applications that support critical decision-making.
• Create and enhance search capabilities, reports, and dashboards.
• Recommend and implement software enhancements and upgrades.
• Ensure compliance with Section 508 accessibility standards.
• Apply security best practices to safeguard applications against vulnerabilities.
• Optimize applications for performance, scalability, and reliability.
• Participate in Agile ceremonies, including Program Increments (PIs) and Agile Release Train (ART) events.
• Provide mentorship and technical guidance to junior developers.
Qualifications:
Required:
• Active Top Secret (TS) clearance with SCI eligibility and ability to obtain a CI Polygraph
• Bachelor's degree or master's degree with 8 years of experience of experience OR associate degree with 11 years of experience OR High School/Diploma with 14 years of experience.
• Experience working within the SAFe Agile framework.
• Strong knowledge of web application security principles.
• Proven experience developing complex web applications in government or similarly regulated environments.
• Proficiency with modern frontend frameworks such as Angular or React
• Strong experience with JavaScript/TypeScript and HTML5/CSS3
• Experience designing and implementing RESTful APIs
• Familiarity with Bootstrap and other CSS frameworks
• Experience with frontend build tools and package managers
• Backend development experience with technologies such as .NET (C#), Python, or Node.js
• Database integration experience (MySQL, PostgreSQL, Microsoft SQL Server)
• Experience implementing Section 508 accessibility requirements
• Knowledge of web application security best practices and performance optimization techniques
Preferred:
• GraphQL for API development
• Elasticsearch for search and analytics integration
• Messaging technologies such as RabbitMQ, Redis, or similar brokers
• Containerization and orchestration tools (e.g., Docker, Kubernetes)
• Building and maintaining CI/CD pipelines for web applications
• Cloud environments, including AWS GovCloud, SC2S, or C2S
• DevSecOps tools and best practices
• Operating within classified or secure environments
• Active TS/SCI clearance with a CI Polygraph
Company:
Sentar, an employee-owned company, is a leading cyber-intelligence solutions provider focused on the National Security sector. Founded in 1990, the company is headquartered in Huntsville, USA, with a team of 201-500 employees. The company is currently Growth Stage.

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