158 senior react engineer jobs at 75 companies in Hanover, PA
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Senior React Developer
Annapolis Junction or Columbia
$200k-$275k/yrHybridFull Time
Freedom Technology Solutions Group: Provides geospatial and software engineering solutions for national security agencies.
12+ YOESenior full-stack developer proficient in React and Java/Spring Boot; experience migrating legacy systems; ability to work with Camunda and Pega workflows; strong REST APIs and Oracle/SQL skills.
React, Java, Spring Boot, Camunda, Pega, Oracle, SQL, REST API
Mindgrub: Digital agency providing custom software and AI innovation solutions.
4+ YOEU.S. citizen required. 4+ years front-end experience with React and JavaScript/TypeScript. Experience with reusable component libraries, client-side state, accessibility, responsive design, testing, CI/CD, and strong communication skills.
SITEC: Provides specialized IT and engineering services to government agencies.
6+ YOEActive TS/SCI with Polygraph, Bachelor's in technical discipline (or 10 years' experience), 6+ years software development, strong React and JavaScript/TypeScript skills, SQL/NoSQL familiarity, able to work core hours 10:00-14:00 M-F.
ERP International: Provides health and technology solutions to federal government agencies.
8+ YOEExpert Java Spring Boot and React developer with 8+ years experience, Agile/DevSecOps and CI/CD experience, US citizenship and ability to obtain Secret DoD clearance, familiarity with Postgres/Redis and automated testing.
Java, Spring Boot, React, Postgres, Redis, Junit, Mockito, Cucumber, Jira, Confluence, DevSecOps, CI/CD, Docker, Kubernetes, Microsoft Teams, DoD STIG
Envision Innovative Solutions: Provides technical engineering and mission support to government agencies.
14+ YOE14 years of experience with a bachelor’s degree in computer science (or related field) or 18 years without the degree; experience with Java, JavaScript, TypeScript, CSS, HTML; desired: Material UI, React, Docker, Kubernetes, Rancher, Gitlab Pipelines; security clearance TS/SCI with Full Scope Polygraph.
CareFirst BlueCross BlueShield: Provides health insurance coverage and administrative healthcare services.
10+ YOE10+ years software engineering experience with 5+ years in senior/technical lead roles; Bachelor's in CS or related; TriZetto Facets, Azure and AWS experience; expertise in Java, Python, C#, .NET, Node.js, React, Angular; strong communication and leadership.
TriZetto Facets, Azure, AWS, Java, Python, C#, .NET, Node.js, React, Angular, Electronic Medical Records (EMR)
Impruvon Health: Automated medication management and clinical workflow platform for providers.
5+ YOE5+ years software engineering experience, ownership of features from design to production, deep Ruby on Rails backend expertise, relational DB design, strong communication; React and Flutter experience preferred.
Baltimore or Austin or New York City or Washington or Maryland or Virginia
FieldFull Time
Sand Technologies: Provides AI software to optimize critical industrial infrastructure.
5+ YOE5+ years software engineering experience, B.Sc./M.Sc. in CS or related, experience with backend systems, cloud platforms, React/JavaScript frontend, APIs, SQL, and production deployments; strong communication and public-sector experience.
ClearEdge: Provides software engineering and data analytics for defense agencies.
15+ YOETS/SCI with polygraph required; 15+ years software engineering experience; full-stack development expertise with Java and JavaScript; proficiency with modern JavaScript frameworks (React, Vue, Angular); familiarity with Section 508 and SDLC.
The Baltimore Banner: Independent nonprofit digital newsroom serving the Baltimore region.
5+ YOE5+ years professional software engineering; 3+ years building production React Native mobile apps; strong JavaScript and TypeScript skills; iOS and Android experience; REST API integration; state management and CI/CD familiarity; strong communication.
Forterra: Develops autonomous ground vehicle systems and software for defense.
3+ YOE3+ years software engineering; experience with Rust or strong systems languages, TypeScript/React, Linux, Docker, CI/CD, scripting (Bash/Python); ability to debug across app, OS, and network layers.
Howard Community College: A public community college providing associate degrees and certificates.
Bachelor's in CS/IS or equivalent; experience with higher-education ERPs (Ellucian, Jenzabar, Workday); designing integrations (REST, SOAP, JMS, Pub/Sub); Node.js or React development; Ethos Platform/Data Connect familiarity; PostgreSQL and Git/SVN; team leadership and stakeholder communication.
ARSIEM: Provides cybersecurity and software engineering to government agencies.
8+ YOEActive TS/SCI with polygraph; US citizenship; Bachelor's degree plus 8 years of experience; strong Python/Java; PySpark, Kubernetes, Docker, Elasticsearch; AI/ML tooling; cloud-native platforms; governance and agile delivery.
Captivation Software: Provides specialized software engineering for the intelligence and defense communities.
14+ YOETop Secret/SCI clearance with polygraph, Bachelor's in CS or related, ~14 years software engineering experience, expertise in Java and modern JavaScript frameworks, Section 508 familiarity, full-stack development across SDLC.
Entegra Systems: Provides engineering and intelligence analysis for government missions.
7+ YOESeven years in software development/engineering; two years in SIGINT environment; front-end web development with JavaScript/React; knowledge of distributed storage and big data tools; experience with Windows/UNIX/Linux; strong communication and mentoring skills.
York Space SystemsNYSE: YSS: Designs and manufactures modular spacecraft platforms and mission solutions.
6+ YOEBachelor's in CS or related, 6+ years full-stack experience, deep C# and React/TypeScript expertise, SQL and distributed systems knowledge, experience with Docker/Kafka/InfluxDB/Python, mentoring ability, and active or obtainable security clearance.
VTG: Provides force modernization and digital transformation for defense agencies.
7+ YOEUS citizen with active TS/SCI with Poly, bachelor\u0002s degree, 7+ years as software engineer; experience with Java, Python, Rust, C++, web frameworks, and modern DevOps tools.
Baltimore or Alabama or California or Delaware or District of Columbia or Florida or Georgia or Maryland or New Jersey or New York or North Carolina or Pennsylvania or South Carolina or Tennessee or Texas or Virginia or West Virginia
$96k-$133k/yrRemoteFull Time
Fearless: Digital services firm delivering IT solutions for government agencies.
5+ YOE5+ years web development with Drupal 10/11 frontend, component-based design, WCAG accessibility, PostCSS, Cypress, Git, React/JS experience; ability to obtain Public Trust clearance and meet CMS residency.