Explore 2 javascript typescript engineer react jobs from 2 hiring companies in Fayetteville, PA, US. Filter by remote, salary, experience, and company, then open any listing to apply.

javascript-typescript-engineer-react

Javascript Typescript Engineer React

Chambersburg

Waynesboro

Hagerstown

Guilford

Carlisle

Shippensburg

Hanover

Frederick

Halfway

Gettysburg

Westminster

Ballenger Creek

Martinsburg

Harrisburg

York

Guilford Siding

Robinwood

Weigelstown

Eldersburg

Javascript Typescript Engineer React Jobs

A1Fed

Sev1Tech

Hybrid

Remote

<div>Overview</div><div>We’re looking for a Full Stack Developer to help build and enhance mission-critical web applications that support daily operations for a federal agency. In this role, you’ll work across the full technology stack—developing modern user interfaces, building robust APIs, and ensuring secure, high-performing applications.</div><div>This is an opportunity to work on systems that directly impact real-world operations, in a collaborative environment that values clean code, thoughtful design, and continuous improvement.</div><div align="center" style="text-align:center;"><hr align="center"></div><div>What You’ll Do</div><div>Build &amp; Enhance Applications</div><ul style="margin-top:0in;" type="disc"><li>Design, develop, and maintain web applications supporting critical agency functions</li><li>Deliver new features, improve performance, and troubleshoot issues</li><li>Ensure applications meet security, usability, and reliability standards</li></ul><div>Front-End Development</div><ul style="margin-top:0in;" type="disc"><li>Develop responsive, modern UIs using React and TypeScript</li><li>Work with HTML5, CSS, and JSON to create dynamic user experiences</li><li>Debug and optimize applications using browser developer tools</li><li>Apply MVC principles and front-end best practices</li></ul><div>Back-End Development</div><ul style="margin-top:0in;" type="disc"><li>Build and maintain APIs and backend services using C# and .NET Framework</li><li>Design and optimize SQL queries, stored procedures, and database structures</li><li>Implement object-oriented solutions and reusable components</li><li>Generate structured outputs (reports, Excel, PDFs)</li></ul><div>DevOps &amp; Collaboration</div><ul style="margin-top:0in;" type="disc"><li>Manage code using Git and GitHub (branching, PRs, code reviews)</li><li>Deploy builds and support development environments</li><li>Collaborate with team members in an Agile or iterative workflow</li></ul><div>Security &amp; Compliance</div><ul style="margin-top:0in;" type="disc"><li>Follow secure coding practices and STIG compliance requirements</li><li>Support authentication, role-based access, and application security features</li><li>Maintain clear and thorough technical documentation</li></ul><div align="center" style="text-align:center;"><hr align="center"></div><div>What You Bring</div><div>Required Qualifications</div><ul style="margin-top:0in;" type="disc"><li>Bachelor’s degree in Computer Science, Information Systems, or related field (or 5+ years of professional programming experience)</li><li>2+ years of experience with:<ul style="margin-top:0in;" type="circle"><li>React, TypeScript, JavaScript</li><li>C# and .NET Framework</li><li>SQL and relational databases</li><li>HTML/CSS, JSON, XML</li></ul></li><li>Experience with:<ul style="margin-top:0in;" type="circle"><li>API development and web services</li><li>Object-oriented design and MVC architecture</li><li>Application security (authentication, roles, etc.)</li></ul></li></ul><div align="center" style="text-align:center;"><hr align="center"></div><div>Nice to Have</div><ul style="margin-top:0in;" type="disc"><li>Experience in government, DoD, or regulated environments</li><li>Familiarity with STIGs or secure coding standards</li><li>Experience working in Agile teams</li><li>Strong debugging and problem-solving skills</li><li>Experience with SQL Server Management Studio</li></ul><div align="center" style="text-align:center;"><hr align="center"></div><div>Tech Stack</div><ul style="margin-top:0in;" type="disc"><li>Front-End: React, TypeScript, Ext JS, HTML5, CSS</li><li>Back-End: .NET Framework (C#), SQL Server, XML</li><li>Tools: VS Code, Visual Studio, IIS Express, NuGet</li><li>DevOps: Git, GitHub</li></ul><div align="center" style="text-align:center;"><hr align="center"></div><div>Work Environment</div><ul style="margin-top:0in;" type="disc"><li>Hybrid schedule: 2 days onsite (Tuesday required), up to 3 days remote</li><li>Consistent weekly schedule in coordination with government leadership</li><li>Collaborative, team-oriented environment with meaningful project work</li></ul><div align="center" style="text-align:center;"><hr align="center"></div><div>Why Join Us</div><ul style="margin-top:0in;" type="disc"><li>Work on mission-driven applications that support real operations</li><li>Opportunity to grow your full stack skill set across modern technologies</li><li>Balance of onsite collaboration and remote flexibility</li></ul>

Full Stack Developer (React / .NET)

Full Stack Developer

2+ years React/TypeScript/JavaScript; 2+ years C#/.NET; 2+ years SQL databases; API development; MVC; HTML/CSS/JSON/XML; BS in CS or related field or 5+ years programming experience

Overview/ Job Responsibilities:
Sev1Tech is seeking a Senior Software Engineer for the Naval Supply Systems Command (NAVSUP) Ordnance Information System (OIS) program based in Mechanicsburg, PA, and Yorktown, VA, as they modernize their legacy IT systems. This role will bring strong systems, software, cloud, and SAFE/Agile experience to provide technical expertise on a mission-critical program whose purpose is to develop and modernize OIS mission critical systems. In this hands-on position, you will work collaboratively to architect, design, build, deliver, and enhance highly available, scalable, real-time systems. You will exercise your judgment in determining and recommending the best designs based on customer business objectives, timelines, and other resource constraints. You will participate in all aspects of the software development lifecycle of a mission critical product including scope and work estimation, architecture and design, coding and unit testing. The right candidate will be working with our program’s developers, engineers, operations, and integration teams to support a complex program to provide Agile development and operations and maintenance on a mission-critical program. This position is remote but visits to customer site will be required. Currently, customer site visits for Program Increment Planning occur every 10 weeks. Primary Responsibilities: As Senior Software Engineer, you will:<ul><li>Participate in all aspects of the software development lifecycle of a mission critical product including scope and work estimation, architecture and design, coding and unit testing, and debugging and maintenance. </li><li>Translate customer needs into user stories and deliver working capabilities at the conclusion of each sprint.</li><li>Ensure software developed passes and completes stages within the CI pipeline.</li><li>Write automated test such as unit, integration, functional, 508, performance, and end-to-end</li><li>Develop in environments that utilize CI/CD tools for build, test, secure and deploy</li><li>Develop in a Docker and Docker Compose environment</li><li>Interface with software developers, analysts, and other project team members using Agile SCRUM methodology and SAFe to deliver features that enhance system capabilities and facilitate NAVSUP OIS’s mission.</li><li>Mentor other software developers on the team to enhance their skills.</li><li>Participate and/or lead sprint demonstrations and facilitate implementation of agreed upon ideas identified at retrospectives.</li><li>Work with others on product teams to develop solutions to hard problems that are impeding progress.</li><li>Effectively communicate technical challenges, options considered, and the recommended solution to team leads. </li></ul>

Minimum Qualifications:
<ul><li>Must have DOD Secret level clearance to start</li><li>Certification Requirement: Directive 8570.1/8140 - Security+ certification required</li><li>Bachelor’s degree with a minimum of 7 years of relevant experience.</li><li>Must be a self-starter with the ability to work independently with minimal supervision.</li><li>Experience developing in a microservices architecture</li><li>Experience developing in a containerized environment</li><li>Experience writing automated tests such as unit, integration, functional, 508, performance, and end-to-end.</li><li>Experience developing in environments that utilize CI/CD tools for build, test, secure and deploy</li><li>Experience with IT networks and technologies; preferably Spring Boot, Linux, Java, Java Servlet, JUnit, JavaScript, HTML, CSS, TypeScript, Axios, Maven, Vue.JS, Ionic, React</li><li>Experience with an agile lifecycle management tool (e.g., Jira, Azure DevOps, Gitlab Ultimate)</li><li>Proficiency with common SAFE and Agile practices, service-oriented environments, and better development practices</li><li>Experience with API Design and Management</li><li>Experience developing Web Services (SOAP, REST)</li><li>Excellent written and verbal communication skills</li></ul>

Desired Qualifications:
<ul><li>Bachelor’s degree with a minimum of 12 years of relevant experience preferred</li><li>Experience as a software developer supporting logistics IT systems</li><li>Familiarity with and prior use of test automation, e.g., Selenium, Citrus</li><li>Knowledge of AWS Relational Database Services</li><li>Experience with DevSecOps frameworks</li><li>Experience with Helm Charts</li><li>Experience as a developer within the AWS environment is a plus</li><li>Direct experience in providing customer support.</li><li>Experience with Message-Oriented Middleware (MOM)</li><li>Experience with Performance Optimization and Scalability</li><li>Experience with policies and procedures to escalate customer issues.</li><li>Experience with analytical and documentation requirements.</li></ul>

About Us:
Formed through the strategic union of Sev1Tech and ERT, Entarian is a premier provider of mission-critical engineering and technology solutions. Founded on a legacy of excellence dating back to 1993, Entarian is a product of an evolved and fully diversified engineering and federal technology leader. From deep space to defense and civilian missions, Entarian delivers secure, mission-aligned digital solutions that drive national resilience and operational effectiveness. We don't just support modernization; we define it. Join the Mission and Start your Career Journey: <a href="https://entarian.com/careers/" target="_blank" data-auth="NotApplicable" rel="noopener">Apply Directly via our Careers Portal</a>  Connect, Referrals & Inquiries? Email the team: <a href="mailto:careers@entarian.com" target="_blank" rel="noopener">careers@entarian.com</a> Entarian is an Equal Opportunity and Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status.

Senior Software Engineer

DOD Secret clearance required; Security+ certification; Bachelor’s degree with 7+ years’ experience; experience with microservices, containers, CI/CD, and Agile/SAFe.

Javascript Typescript Engineer React Jobs in Fayetteville, PA, US | HiringCafe: every job on earth

Javascript Typescript Engineer React Jobs in Fayetteville, PA, US

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