> Markdown version of [/jobs/ext/277759-sr-full-stack-web-developer](https://www.wearedevelopers.com/jobs/ext/277759-sr-full-stack-web-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Full-Stack Web Developer - **Company:** Oasys Inc. - **Location:** Fairfax, VA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** HTML, Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Amazon Web Services, Android Software Development, Browser Compatibility, Cascading Style Sheets (CSS), Code Review, Web Development, Mobile Application Software, MongoDB, Node.Js, Scrum Methodology, Responsive Web Design, Website Wireframe, Express.js, Mean Stack, Backend, AngularJS, Information Technology, Front End Software Development - **Published:** May 19, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=b49d72533c023435 ## About the Role * Bachelor's degree in computer science or a technical field * 10+ years developing web and mobile applications with proven leadership in legacy software rebuilds * Microsoft Full-Stack Development building web applications using MEAN stack (MongoDB, Express.js, Angular, Node.js) * Front and back-end development knowledge in JAVA, HTML, CSS, Javascript, and framework libraries expertise * Strong understanding of responsive design and cross-browser compatibility * Knowledge of UI/UX principles and section 508 accessibility standards * Excellent communication and management skills. Certifications Required: * Certified Scrum Master * Certified Professional in Full Stack Development (CP-FSD) Certifications Preferred: * AWS Solutions Architect certification * PMP certification Security Clearance Requirements: * Must be a U.S. Citizen * Must have an active DoD Secret clearance. ## Description The Full-Stack Web Developer requires a strong focus on building high-quality mobile-first applications. Role requires experience in designing, developing, and maintaining responsive, scalable web solutions that deliver seamless user experiences across mobile devices. Experience developing fully compliant iOS and Android mobile applications is required. Requires collaboration closely with design, product, and backend teams to deliver robust features from concept to deployment. Works in an agile process and produces iterative products for review and refinement. Responsible for delivering web and mobile designs that are 508 accessible and compliant with DoD regulations. NOTE: This role is contingent on the contract being awarded. Primary Responsibilities: * Develop and maintain scalable, efficient, and responsive web applications using modern front-end technologies. * Expertise in mobile responsive design and mobile first code for scalability. * Integrate front-end components with back-end services and APIs. * Ensure cross-browser compatibility and adherence to accessibility standards. * Collaborate with UX/UI designers to translate wireframes and prototypes into functional code. * Participate in code reviews and contribute to best practices for front-end development. * Partner with designers and developers to ensure the interface meets usability standards and aligns with business goals. * Communicate effectively with back-end developers about feasibility, constraints, and technical considerations. * Support testing and validate that the front-end meets requirements and provides seamless user experience. * All other duties as assigned by management. ## Related Videos - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Coffee with Developers](https://www.wearedevelopers.com/videos/354-coffee-with-developers) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [40 Minutes to Build a Serverless COVID-19 REST and GraphQL APIs](https://www.wearedevelopers.com/videos/208-40-minutes-to-build-a-serverless-covid-19-rest-and-graphql-apis) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Coffee with developers - Brian Morrison](https://www.wearedevelopers.com/videos/902-coffee-with-developers-brian-morrison) ## Related Articles - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [What is a web developer?](https://www.wearedevelopers.com/magazine/18-what-is-a-web-developer) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [The Best Software Developer Blogs to Read](https://www.wearedevelopers.com/magazine/156-the-best-software-developer-blogs-to-read) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer)