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56 junior react developer jobs at 41 companies in Nashua, NH

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
1mo
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Junior Design Engineer, Americas
New York or San Francisco or Austin or Portland or Los Angeles or Seattle or Boston or Chicago or Denver or United States
$98k-$165k/yr RemoteFull Time
Ashby: Provides all-in-one recruiting software for high-growth businesses.
0+ YOEDesign and implement UI/UX and production-quality code; proficiency with TypeScript, React, CSS; familiarity with backend technologies (Node.js, GraphQL, Postgres, Redis); strong visual design and product thinking. Junior applicants: 0–2 years industry experience.
TypeScript, React, GraphQL, Node.js, Postgres, Redis, CSS
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3w
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Software Engineer: Web Developer
Cambridge, Massachusetts, United States
$110k/yr OnsiteFull Time
Nanobiosym
Nanobiosym: Portable nanotechnology platforms for rapid, real-time disease detection.
Bachelor's degree in CS or related; strong HTML, CSS, JavaScript; experience with Vue, React or Angular; CMS knowledge (WordPress/Joomla); UI/UX and graphic design skills; REST API development; Agile and test-driven practices.
HTML, CSS, JavaScript, Vue, React, Angular, WordPress, Joomla, REST API, CI/CD, git, GitHub, GitLab, Jenkins
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1mo
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Software Engineer
United States or Boston or New York City or Denver
$110k-$125k/yr RemoteFull Time
Spoiler Alert
Spoiler Alert: SaaS platform for managing and liquidating surplus food inventory.
2+ YOE2+ years professional software engineering experience; full‑stack web development using TypeScript, React, Express, and MongoDB; strong testing, collaboration, and productive use of AI coding tools.
TypeScript, React, Express, MongoDB
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2w
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Software Engineer
Colorado Springs or Boston
HybridFull Time
Odyssey Systems
Odyssey Systems: Provides engineering, integration, and technical services to defense clients.
1+ YOEUS citizen with active Secret clearance, B.S. in a STEM field, 1+ years software development experience; proficiency in TypeScript/Python/Java/C++/Rust/Julia, React, REST APIs, and writing tested, maintainable code.
TypeScript, Python, Java, C++, Rust, Julia, React, Cesium, Resium, Electron, MATLAB, NumPy, SciPy, GeoJSON, CZML, React Testing Library
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2mo
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Software Engineer I (Frontend, Growth)
Boston, Massachusetts, United States
$105k-$145k/yr OnsiteFull Time
WHOOP
WHOOP: Wearable technology for personalized health and performance tracking.
Frontend development experience with modern JS/TS, React; HTML/CSS; REST APIs; Git; problem-solving; collaborative mindset; eager to learn.
React, TypeScript, HTML, CSS, Git, REST APIs
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2w
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Software Engineer II
Waltham, Massachusetts, United States
$133k-$146k/yr HybridFull Time
Imprivata
Imprivata: Provides digital identity and security management for healthcare organizations.
2+ YOE2+ years professional software development experience; Bachelor’s in CS or equivalent; experience with Java, Spring Boot, React, REST APIs, PostgreSQL, AWS, Kubernetes, Git, and CI/CD; strong communication and problem-solving skills.
Java, Spring Boot, Kafka, PostgreSQL, AWS, Kubernetes, React, Git, CI/CD
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1mo
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Software Development Engineer II, Consumer
Boston, Massachusetts, United States
$112k-$141k/yr HybridFull Time
CarGurus
CarGurusNASDAQ: CARG: Operates an online marketplace for buying and selling vehicles.
2+ YOE2+ years Java development experience, experience building consumer-facing AI features, APIs/REST, familiarity with TypeScript/JavaScript/React and AWS preferred, strong algorithms and data-structures knowledge.
Java, TypeScript, JavaScript, React, AWS, APIs, REST, AI coding assistants, multi-agent workflows
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3w
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Software Engineer (Fullstack)
New York City or Boston
$185k-$225k/yr HybridFull Time
Counsel
Counsel: Provides AI-powered virtual medical consultations through asynchronous messaging.
2+ YOE2+ years professional experience; proficiency with React, TypeScript, Next.js, React Native, Postgres/Supabase, HTML/CSS (Tailwind), and AWS; experience building consumer-facing products and enterprise integrations.
React, TypeScript, Next.js, React Native, Postgres, Supabase, HTML, CSS, Tailwind, AWS
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3w
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Software Engineer - Business and Client Technologies
Boston, Massachusetts, United States
$95k-$165k/yr OnsiteFull Time
Arrowstreet Capital
Arrowstreet Capital: Manages global equity portfolios using systematic quantitative models.
2+ YOEBachelor's in CS/Engineering, 2+ years professional development with C# and/or Python, React and server-side API experience, exposure to cloud services, CI/CD, Git, EMR not required.
C#, Python, React, SQL Server, PostgreSQL, MySQL, Git, Azure DevOps, AWS, GitLab, GitHub, LLM APIs, MCP
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1w
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Front End Development Engineer, Automation Integration Technologies
Austin or Bellevue or Arlington or North Reading
$144k-$194k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
2+ YOE2+ years professional front-end/web/mobile development using JavaScript, HTML, CSS; CS fundamentals; experience with Angular or React; familiarity with TypeScript/Node and AWS preferred.
JavaScript, HTML, CSS, Angular, React, TypeScript, Node, AWS
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1w
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Software Engineer Intern - Undergraduate Students
Boston or Boston
$17-$24/hr HybridInternship
Massachusetts Bay Transportation Authority
Massachusetts Bay Transportation Authority: Operates public transportation services in the Greater Boston area.
1+ YOEUndergraduate enrollment in CS/EE/IT or related field; strong Python and React skills; familiarity with Agile, XML/HTML/CSS/JavaScript, Windows development, testing tools, and Microsoft Office; ability to commute in Boston; authorized to work in the U.S. (CPT/OPT eligible).
Python, TypeScript, React, Splunk, Tableau, OpenAPI, Pytest, Pylint, Flake8, Black, Pip, Pipenv, XML, XSL, HTML5, CSS, JavaScript, Windows, GitHub Actions, git, Enterprise Asset Management (EAMS), Microsoft Office
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1mo
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Full Stack Engineer
Merrimack, New Hampshire, United States
OnsiteFull Time
Fidelity Investments
Fidelity Investments: Financial services and investment management firm providing advisory solutions.
Hands-on experience building scalable RESTful APIs, relational and NoSQL databases, SDLC, CI/CD, mentoring junior engineers, and modern front-end development with JavaScript frameworks.
JavaScript, Angular, AngularJS, Backbone.js, React JS, CSS3
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2w
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Software Engineer
Boston or Encinitas
$124k-$168k/yr OnsiteFull Time
Paperless Parts
Paperless Parts: Cloud-based quoting software for custom part manufacturers.
2+ YOE2+ years coding experience, bachelors or equivalent, experience with modern web stacks (Python/TypeScript/React), API design, SQL, cloud (AWS/Azure/GCP), Docker and CI/CD, strong communication and collaboration skills.
Python, Django, FastAPI, TypeScript, React, PostgreSQL, AWS, Node, Express, Java, Spring, SQL, Docker, Jenkins, Cursor, Claude Code
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1mo
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Software Engineer | Frontend
Lisbon or San Francisco or Sunnyvale or Raleigh or Seattle or Boston or London or Bangalore or Dublin or Kyiv or Portugal
OnsiteFull Time
SingleStore
SingleStore: Provides a distributed SQL database for real-time analytics.
2+ YOEFrontend engineer with 2+ years on a SaaS product; strong experience with React and TypeScript, browser application architecture, and familiarity with backend languages (Golang, Python, Rust) is a plus.
React, TypeScript, Golang, Python, Rust, SQL
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5d
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Associate Software Engineer
Concord or Cambridge
$95k-$105k/yr HybridFull Time
KAYAK
KAYAK: Global travel search engine for flights, hotels, and rentals.
Foundational proficiency in HTML,CSS,JavaScript; experience with React and exposure to TypeScript; familiarity with Git; degree or equivalent practical experience; strong communication and collaborative skills.
React, TypeScript, Git, Claude Code, HTML, CSS, JavaScript
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1d
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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
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2w
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Newsroom Developer
Boston, Massachusetts, United States
$83k-$120k/yr OnsiteFull Time
Boston Globe Media
Boston Globe Media: Publishes and distributes independent news and journalism in New England.
2+ YOE2+ years newsroom development experience; strong HTML/CSS/JavaScript, data viz and mapping skills; familiarity with React, Webpack, Gatsby, GitHub, Python or R; strong UX and accessibility knowledge.
HTML, CSS, Sass, Stylus, Tailwinds, JavaScript, D3, MapboxGL JS, Datawrapper, Flourish, React, Webpack, Gatsby, Vite, GitHub, Python, R
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1mo
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Software Engineer II (multiple)
Boston, Massachusetts, United States
$140k-$174k/yr HybridFull Time
Klaviyo
KlaviyoNYSE: KVYO: Customer data platform for e-commerce marketing and automation.
1+ YOEMaster's in a relevant engineering field and 1 year experience; experience with Networking, Distributed Systems, Cloud Native Technologies, C, Python, TypeScript, Spirent, Wireshark, pyATS, Linux, gdb, kernels, Django, React, SQL, and Splunk.
Networking, Distributed Systems, Cloud Native Technologies, C, Python, TypeScript, Spirent, Wireshark, pyATS, Linux, gdb, kernels, Django, React, SQL, Splunk
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1mo
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Senior Engineer, Software Development Engineering
Boston, Massachusetts, United States
$131k-$163k/yr HybridFull Time
Analog Devices
Analog DevicesNASDAQ: ADI: Designs and manufactures semiconductors for signal processing and power management.
2+ YOEMaster's in CS/CE (or equivalent) and 2 years software engineering experience; demonstrated expertise with Python and TypeScript/JavaScript, testing, containerization/Kubernetes, EKS/AKS, SQL/NoSQL, and frameworks like Fast API, Flask, or React.
Python, TypeScript, JavaScript, Kubernetes, EKS, AKS, Fast API, Flask, React, SQL, NoSQL
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1mo
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Software Engineer, Agentic AI
Boston or San Francisco or United States
HybridFull Time
Displai
Displai: AI-powered platform for managing interactive digital signage content.
1+ YOE1–4 years software engineering experience; strong TypeScript/Node and React skills; backend API and SQL experience; familiarity with agentic coding tools (Claude Code, Cursor, MCP); Git, testing, and CI/CD experience.
TypeScript, Node, React, PostgreSQL, MySQL, HTML, CSS, Git, Docker, AWS, Redis, DynamoDB, Go, NestJS, Express, Prisma, TypeORM, Claude Code, Cursor, MCP
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