383 reactjs jobs at 199 companies in Londonderry, NH

1w
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Software Engineering & Development
Boston, Massachusetts, United States
$178k-$180k/yr HybridFull Time
State Street
State StreetNYSE: STT: Provides investment servicing and management to institutional investors.
3+ YOEBachelor's (or Master's) in CS or related plus 5 (or 3) years experience; high proficiency in ReactJS, JavaScript/TypeScript, HTML/CSS, GraphQL, REST, unit testing, and modern front-end toolchains.
ReactJS, JavaScript, TypeScript, HTML, CSS, GraphQL, REST, WebSocket, Styled components, Emotion, Jest, React Testing Library, Webpack, Vite, Rollup, Node.js, Express.js, GraphQL Server, Docker, Kubernetes, AWS
1mo
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Director, Software Engineering (Adobe - AEM/WorkFront)
Atlanta or Boston or Chicago or Denver or Los Angeles or New York or Salt Lake City or San Diego or United States
$138k-$183k/yr RemoteFull Time
DEPT
DEPT: Global digital agency providing integrated technology and marketing services.
10+ YOE10+ years frontend engineering experience with React/Next.js, deep Adobe AEM (Sites, Assets, Cloud Service, EDS) expertise, CDN/edge/cache and SSO architecture knowledge, hands-on cloud migrations and performance optimization.
React, Next.js, WorkFront, Adobe Experience Manager (AEM Sites and AEM Assets), AEM Cloud Service, AEM Edge Delivery Services (EDS), AEM Assets (DAM), Creative Cloud for Enterprise, Adobe Express, Adobe Commerce, CDN, Single Sign-On (SSO)
3w
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Lead Software Engineer/Technical Program Manager
Colorado Springs or Boston
HybridFull Time
Odyssey Systems
Odyssey Systems: Provides engineering, integration, and technical services to defense clients.
10+ YOE3+ MgmtUS citizen with active Secret clearance, BS in STEM, 10+ years software development (≥3 years technical lead/architect). Preferred: TS/SCI, MS, PMP or DAWIA. Experience with Julia, React/TypeScript, CesiumJS, Electron, ONNX, and defense simulation tools.
Julia, SciML, DifferentialEquations.jl, PackageCompiler.jl, CesiumJS, Resium, CZML, ONNX Runtime, ONNX.jl, electron-builder, STK, AFSIM, EADSIM, React, TypeScript, GitHub Actions, Electron
1mo
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Senior Full-Stack Software Engineer - VLSI Tools
Santa Clara or Westford or Austin or Durham
$152k-$288k/yr HybridFull Time
NVIDIA
NVIDIANASDAQ: NVDA: Designs GPU-accelerated computing and artificial intelligence hardware.
5+ YOE5+ years experience; BS/MS in Computer Science or related (or equivalent experience); knowledge of VLSI design; JavaScript, Node.js, modern frontend frameworks; distributed microservices, databases, algorithms; strong communication.
JavaScript, Node.js, Vue.js, React.js, Svelte, Ember.js, Cursor, Claude Code, Co-pilot, SQL, MongoDB, Python, Golang
22h
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Software Architect
Arlington or Atlanta or Boston or Chicago or Dallas or Denver or Detroit or Houston or Miami or Orlando or Philadelphia or Phoenix or Raleigh or Wichita
$145k-$180k/yr RemoteFull Time
Koch Inc.
Koch Inc.: Operates global manufacturing, refining, and industrial technology businesses.
Experience designing cloud-native multi-tenant SaaS architecture with React/Next.js/TypeScript, Node.js/NestJS, PostgreSQL, AWS services, Terraform, CI/CD and serving as technical lead for production applications.
React, Next.js, TypeScript, Node.js, NestJS, Express, PostgreSQL, AWS EC2, AWS RDS, AWS Lambda, AWS S3, AWS IAM, AWS Cognito, AWS QuickSight, Terraform, CI/CD, OAuth 2.0, JWT, SAML
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Principal Software Engineer
Warsaw or Fridley or Mounds View or Brooklyn Park or Fort Worth or North Haven or Jacksonville or Boston or Lafayette
$153k-$229k/yr HybridFull Time
Medtronic
MedtronicNew York Stock Exchange: MDT: Develops and manufactures medical devices and digital health solutions.
5+ YOEBachelor’s degree + 7+ years software engineering or advanced degree + 5+ years; experience designing and developing scalable systems for manufacturing operations; mentoring, requirements capture, database architecture, CI/CD, and cross-functional collaboration; ability to travel 25%.
Ignition, deviseWISE, Microsoft Azure, AWS, Docker, Kubernetes, Jenkins, Terraform, React, Angular, Node.js, ASP.NET, HTML5, CSS3, WebAPI, Microservices Architecture, CI/CD Pipelines, RESTful API Design, Java, C++, .NET, Scala, Lua, Python, SQL
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Principal Engineer, VaiDA User Experience
Boston, Massachusetts, United States
$167k-$250k/yr HybridFull Time
Vertex Pharmaceuticals
Vertex PharmaceuticalsNASDAQ: VRTX: Develops and sells prescription drugs for serious genetic diseases.
Proven frontend/UX engineering experience designing and building polished, user-centered interfaces for complex AI-driven enterprise workflows; strong prototyping, usability, accessibility, and collaboration skills.
React, Angular, TypeScript, JavaScript, HTML, CSS, Figma
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Senior Backend Engineer
Cincinnati or Boston or United States
OnsiteFull Time
Tesouro
Tesouro: Provides embedded payment infrastructure for software platforms and banks.
Senior-level backend engineer with ownership of production microservices, experience with distributed systems, integrating partner banks/card networks, AI-assisted workflows, and strong collaboration and judgment.
C#, .NET, Python, AWS, Kubernetes (EKS), PostgreSQL, Cassandra, Redis, RabbitMQ, Kafka, React, NX, ArgoCD, GitHub Actions, PACT, xUnit, Cucumber, Jest, Playwright, Grafana, OpenTelemetry, PagerDuty
2w
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Backend C2 Systems Full Stack Developer
Hanscom AFB or Hampton
$113k-$257k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
8+ YOE8+ years software development experience including backend/services, microservices, relational and NoSQL datastores, message/streaming platforms, containerization, frontend (React), CI/CD, and eligibility for Secret clearance.
Java, .NET, C#, Python, Go, Kafka, React, AWS, Kubernetes, Prometheus, Grafana, OpenTelemetry
2w
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Backend C2 Systems Full Stack Developer
Hanscom Air Force Base, Massachusetts, United States
$113k-$257k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
8+ YOE8+ years software development experience with backend services and microservices; experience with server-side languages, data stores, messaging, containerization, CI/CD, and secure service design; ability to obtain Secret clearance.
Java, .NET, C#, Python, Go, Kafka, React, CI/CD, AWS, Kubernetes, Prometheus, Grafana, OpenTelemetry, mTLS, OAuth2, OIDC, API gateway, service mesh
2d
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Sr. Optimizely Developer
Boston or Denver
HybridFull Time
Bentley Systems
Bentley SystemsNASDAQ: BSY: Software for designing, building, and operating global infrastructure.
5+ YOE5+ years full-stack web development with 3+ years in Optimizely; deep C#/.NET Core/MVC backend and advanced HTML5/CSS3/JS frontend skills; experience with experimentation, personalization, and CI/CD.
Optimizely CMS, Optimizely Web Experimentation, Optimizely Feature Experimentation, C#, .NET Core, MVC, HTML5, CSS3, SASS, JavaScript, ES6+, jQuery, React, Vue, Project JS, Figma, Git, Azure DevOps, GitHub Actions, GitHub Copilot, ChatGPT, Salesforce, Marketo, Adobe Commerce
1mo
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Sr. Software Engineer I
Atlanta or Boston or Chicago or Indianapolis or United States or Canada or North America
RemoteFull Time
Greenlight Guru
Greenlight Guru: Quality management and clinical data software for medical devices.
4+ YOE4+ years professional software development experience; React and modern JavaScript framework proficiency; experience with LLMs/generative AI and cloud-native architectures; REST/RPC/GraphQL APIs, testing, CI, and strong communication skills.
React, LLMs, GraphQL, REST, RPC
1mo
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Software Engineer
Cambridge or Concord
$110k-$120k/yr HybridFull Time
KAYAK
KAYAK: Global travel search engine for flights, hotels, and rentals.
5+ YOE5+ years software engineering experience, strong Java skills, API and SQL/MySQL experience, ability to design and deliver backend systems, cross-functional collaboration, mentoring, and CS degree or equivalent.
Java, RESTful APIs, SQL, MySQL, JavaScript, React, HTML, CSS
2w
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Senior Software Engineer
Concord or United States
$130k-$150k/yr RemoteFull Time
EAB
EAB: Providing research and technology solutions to educational institutions.
6+ YOE6+ years in cloud-based software development with strong Ruby on Rails, React, MySQL/PostgreSQL, Docker, AWS experience; leadership, CS fundamentals, performance optimization, and mentoring skills.
Ruby on Rails, React, MySQL, PostgreSQL, Docker, GitHub Copilot, Cursor, AWS, JavaScript, Backbone, Node.js
2mo
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Principal Software Engineer
North Bethesda or Waltham
$200k-$225k/yr HybridFull Time
Xometry
XometryNASDAQ: XMTR: Operates an AI-powered marketplace for custom manufacturing and prototyping.
8+ YOE8–12+ years software development experience; strong background in system architecture, microservices, and enterprise integrations.
Python, React, TypeScript, AWS
2w
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Software Engineer, Form Now
Somerville or Billerica
$110k-$145k/yr OnsiteFull Time
Formlabs: Develops and manufactures professional-grade 3D printers and materials.
Full-stack web development experience with Python/Django and Next.js/React.js, production software ownership, collaboration with cross-functional teams, and willingness to work on-site in Billerica, MA as needed.
Python, Django, Next.js, React.js, Manufacturing Execution System (MES)
2w
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Senior Software Engineer (Full Stack)
Pittsburgh or Boston or Montreal or Toronto or United States
HybridFull Time
Confluence
Confluence: Software for investment management data and regulatory reporting.
Experienced full-stack developer with C#/.NET backend, React frontend, SQL Server, Python familiarity, modern architecture, CI/CD familiarity, debugging skills, and Agile experience.
React, .NET, Python, SQL Server, C#, SQL
1w
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Software Engineer - Advanced Reporting
Boston, Massachusetts, United States
$116k-$174k/yr OnsiteFull Time
Klaviyo
KlaviyoNYSE: KVYO: Software platform for automated e-commerce marketing and customer data.
2+ YOE2+ years full-stack experience, proficiency in Python or TypeScript/React, experience with data at scale, degree or equivalent experience, strong communication and cross-functional collaboration skills.
Python, TypeScript, React, Django, FastAPI, Airflow, AWS, Kubernetes, Docker, Terraform
2mo
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Senior Software Engineer
Waltham, Massachusetts, United States
HybridFull Time
SS&C Technologies
SS&C TechnologiesNasdaq: SSNC: Provides software and technology for financial and healthcare sectors.
5+ YOE5+ years of software development; full-stack SaaS experience; clean, maintainable code; strong communication; able to work in fast-paced environment.
TypeScript, JavaScript (Node.js), Python, Java, React, Spring Boot, Express, Flask, REST, GraphQL, gRPC, Protobuf, AsyncAPI, PostgreSQL, MongoDB, Cassandra, Redis, Docker, Kubernetes, Helm, Ansible, Terraform, OpenTofu, OpenTelemetry, Prometheus, Splunk, Dynatrace, Git
3d
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Applications Analyst
Boston, Massachusetts, United States
$135k-$180k/yr OnsiteFull Time
Boston Partners
Boston Partners: Global investment firm specializing in value equity management strategies.
5+ YOEBachelor's in computer science or equivalent,5+ years software development experience,proficiency in SQL and Microsoft SQL Server,C# and/or Java,Git/TFVC;financial services experience preferred.
SQL, Microsoft SQL Server, C#, Java, Git, TFVC, Charles River Investment Management System, Markit EDM Platform, Data Warehouse Platforms, Angular, React, GPT