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72 senior react engineer jobs at 40 companies in Danbury, CT

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Sr. Software Engineer (React Native)
Shelton, Connecticut, United States
$119k-$149k/yr OnsiteFull Time
Subway
Subway: Global restaurant chain specializing in made-to-order submarine sandwiches.
6+ YOE6+ years professional software engineering experience; experience with JavaScript, Node.js, ReactJS, React Native; familiarity with REST APIs, databases, testing, CI/CD, version control, and Agile; bachelor’s degree preferred or equivalent experience.
JavaScript, Node.js, ReactJS, React Native, REST APIs, CI/CD
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3mo
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Senior Software Engineer
Fort Lee, New Jersey, United States
$110k-$160k/yr HybridFull Time
Ramsey Theory Group
Ramsey Theory Group: Technology holding firm developing enterprise software, AI, and cybersecurity platforms.
5+ YOE5+ years of professional software engineering; strong frontend with Next.js/React; backend with Django; full-stack feature delivery; familiarity with Celery/Redis; Docker; Kubernetes; GitLab CI/CD; focus on scalability and maintainability.
Next.js, React, Django, Celery, Redis, Docker, Kubernetes, GitLab CI/CD
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4w
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Senior .NET Full Stack Developer Lead (React/AWS)
Hartford, Connecticut, United States
$64k-$115k/yr OnsiteFull Time
Cognizant
CognizantNASDAQ: CTSH: Provides IT consulting and technology services to global enterprises.
.NET Core/C# and React experience, AWS and SQL Server knowledge, proven technical leadership, stakeholder communication, and experience working with distributed/offshore teams.
.NET, .NET Core, C#, React, React.js, JavaScript, AWS, SQL Server
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2mo
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Senior Research Engineer - Experimental Engineering
Yonkers or Washington or Colchester or Arizona or California or Connecticut or Illinois or Maryland or Massachusetts or Michigan or New Hampshire or New Jersey or New York or Texas or Vermont or Virginia or District of Columbia
$115k-$160k/yr RemoteFull Time
Consumer Reports
Consumer Reports: Tests products and publishes ratings for consumer advocacy.
Senior research engineer with deep full-stack software engineering experience, strong applied AI/ML knowledge, prototyping and R&D experience, Python/FastAPI and frontend (React/React Native) familiarity, and ability to lead experiments and mentor engineers.
AI, Machine Learning, Python, FastAPI, React, React Native, RAG
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2mo
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Senior Software Engineer - Compliance Technology
Greenwich or New York
$150k-$235k/yr HybridFull Time
Balyasny Asset Management
Balyasny Asset Management: Global multi-strategy investment firm managing diverse financial assets.
10+ YOE10+ years software development; expert in C#; SQL; React; CSS; Python; AWS; Agile/SCRUM; DevOps; AI-assisted tools; finance experience a plus.
C#, SQL, React, CSS, Python, AWS, CI/CD, infrastructure-as-code, AI tools
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6d
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Senior .NET Full Stack Developer Lead (React/AWS)
Hartford, Connecticut, United States
$64k-$115k/yr OnsiteFull Time
Cognizant
CognizantNasdaq: CTSH: Provides global information technology and business process outsourcing services.
Proven experience with .NET Core/C#, React.js, JavaScript, AWS, and SQL Server; experience leading technical teams, strong communication and software engineering best practices.
.NET Core, C#, React.js, JavaScript, AWS, SQL Server
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2mo
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Senior Software Engineer - Compliance Technology
New York or Greenwich
$150k-$235k/yr OnsiteFull Time
Balyasny Asset Management
Balyasny Asset Management: Global multi-strategy investment firm managing diverse alternative asset classes.
10+ YOE10+ years software development; deep expertise in C#; production SQL queries; React/CSS; Python; AWS; Agile/SCRUM; DevOps (CI/CD, IaC); AI-assisted development tools; finance industry exposure a plus.
C#, SQL, React, CSS, Python, AWS, CI/CD, Infrastructure as Code, AI-assisted development tools
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3mo
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Senior AI/ML Engineer - Remote
Eden Prairie or Hartford
$92k-$164k/yr RemoteFull Time
UnitedHealth Group
UnitedHealth GroupNYSE: UNH: Provides health insurance and technology-enabled health care services.
3+ YOE3+ years cloud-native DevOps, AI/ML in enterprise, AWS/GCP, React/JS, and cross-functional delivery.
AWS, GCP, Dialogflow, Amazon Connect, Lex, React, Python, JavaScript, Node.js, GitHub, CI/CD, SRE, DevOps
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3mo
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Senior Software Engineer, Infrastructure & Developer Tooling
New York City or Glen Cove
$170k-$220k/yr HybridFull Time
Standard Bots
Standard Bots: Develops and manufactures AI-powered robotic arms for industrial automation.
7+ YOE1+ Mgmt7+ years software engineering; leadership in DevOps/infrastructure; strong CI/CD, distributed systems, and tooling; cloud platforms (AWS/GCP/Azure) and Kubernetes; security best practices; observability and monitoring; Python/NodeJS/TypeScript; robotics interest a plus.
Python, NodeJS, TypeScript, React, Docker, Kubernetes, Terraform, Postgres, Cloudflare
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3mo
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Senior Software Engineer
Bristol or Burbank or Glendale
$142k-$190k/yr OnsiteFull Time
The Walt Disney Company
The Walt Disney CompanyNYSE: DIS: Produces media content and operates global theme parks.
5+ YOE5+ years web development; Node.js/Java/Kotlin; cloud AWS; frontend tech; HTTP servers; test-driven, agile; strong communication.
Node.js, Java, Kotlin, AWS, NGINX, HAProxy, Apache, CloudFront, Fargate, React Native, JavaScript, TypeScript
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3mo
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Senior Software Engineer
Bronx, New York, United States
$150k-$180k/yr HybridFull Time
Essen Health Care
Essen Health Care: Provides multispecialty medical care and home-based healthcare services.
5+ YOE5+ years software engineering; full-stack; strong fundamentals; self-directed; tests; feature ownership.
Python, FastAPI, React, TypeScript, MSSQL, Redis, Azure, Terraform
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1w
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Senior Software & Automation Engineer
Fort Lee, New Jersey, United States
$70k-$110k/yr OnsiteFull Time
USP Management
USP Management: Imports, processes, and distributes steel and aluminum coils.
5+ YOE5+ years software engineering experience; strong backend (TypeScript/Node.js, Python), full-stack (React/TypeScript), SQL databases, GCP experience preferred, bilingual English/Korean, ability to own end-to-end work and build AI-enabled automation.
TypeScript, Node.js, Python, React, BigQuery, Dataform, Data Studio, Google Apps Script, MySQL, PostgreSQL, GCP, AWS, Claude Code, ERP, SQL
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1w
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Senior Software Developer
White Plains, New York, United States
$160k-$180k/yr HybridFull Time
Skadden
Skadden: Global law firm providing legal advisory and litigation services.
5+ YOEBachelor's in Computer Science or related, 5+ years enterprise application development, experience with .NET, React, Python, C#, TypeScript, CI/CD and AI-enabled services; strong architecture and communication skills.
.NET, React, Python, C#, ReactJS, TypeScript
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1mo
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Senior Software Developer (Hybrid or Remote)
Canton or Raleigh or Farmington or Boston
$101k-$143k/yr HybridFull Time
Intact Insurance Specialty Solutions
Intact Insurance Specialty SolutionsToronto Stock Exchange: IFC: Provides specialized property and casualty insurance and risk services.
6+ YOE6+ years software development experience; expertise in .NET Core/C#, ASP.NET MVC, Entity Framework, Angular or React, Microsoft Azure; strong SQL Server and CI/CD experience; Bachelor’s or Master’s in CS/Engineering.
.NET Core, C#, ASP.NET MVC, Entity Framework, Angular, React, Microsoft Azure, Microsoft Azure Functions, Microsoft App Services, Microsoft Azure Storage, Microsoft Azure DevOps, SQL Server, CI/CD
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2mo
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Full Stack Engineer, Senior
Oakland or Seattle or WA or OH or CA or Long Beach or AZ or CO or CT or FL or GA or MD or MN or NV or OR or El Dorado Hills or Lodi or Rancho Cordova or Redding or San Diego or Woodland Hills or AL or IL or VA or WI or TX or NY
$103k-$174k/yr HybridFull Time
Ascendiun
Ascendiun: Nonprofit parent overseeing health insurance and clinical service organizations.
5+ YOE5+ years full stack development; BA/BS or equivalent IT experience; React/Vue/Angular; .NET/Java/Node.js/Python APIs; SQL/NoSQL; Azure preferred; Docker; IaC; CI/CD; AI tools; healthcare experience preferred.
React, Vue, Angular, JavaScript, TypeScript, .NET, Java, Node.js, Python, MS SQL Server, Oracle, NoSQL, REST, Azure, AWS, GCP, Docker, Kubernetes, Ansible, Bicep, ARM, Terraform, GitHub, GitLab, Bitbucket, Git
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4w
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Senior Software Engineer
Bristol or Burbank or Glendale
$142k-$190k/yr OnsiteFull Time
The Walt Disney Company
The Walt Disney CompanyNYSE: DIS: Produces movies, operates theme parks, and provides streaming services.
5+ YOE5+ years web/software engineering; mastery of HA Proxy, NGINX, Apache; extensive NodeJS and/or Java/Kotlin experience; AWS EC2, Fargate, Cloudfront; frontend web development; BS in Computer Science or equivalent.
HA Proxy, NGINX, Apache, NodeJS, Java, Kotlin, AWS EC2, Fargate, Cloudfront, JavaScript, TypeScript, React Native
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1mo
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Senior Frontend Engineer (React.js / Micro Frontends)
Stamford, Connecticut, United States
$145k-$175k/yr OnsiteFull Time
Publicis Groupe
Publicis GroupeEuronext Paris: PUB: Global advertising and digital transformation agency holding.
5+ YOE5+ years frontend experience with React.js, JavaScript (ES6+), HTML5/CSS3; experience with Material-UI, Styled Component, Webpack/Rollup, Storybook, React-Router-Dom, state management (Zustand/Redux/Context API), custom hooks, Jest/React Testing Library, RESTful APIs, Microsoft Azure and Azure DevOps, CI/CD, module federation and micro frontend arc...
React.js, JavaScript (ES6+), HTML5, CSS3, Material-UI, Styled Component, Webpack, Rollup, Storybook, React-Router-Dom, DOM, Zustand, Redux, Context API, Jest, React Testing Library, RESTful APIs, Microsoft Azure, Microsoft Azure DevOps, CI/CD, module federation, Docker, Next.js, DevExtreme DataGrid, ExcelJS
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4d
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Emerging Technology Senior Engineer
Hartford, Connecticut, United States
$139k-$230k/yr HybridFull Time
Travelers
TravelersNYSE: TRV: Provide property and casualty insurance for individuals and businesses.
6+ YOEBachelor's in CS/STEM,6+ years data engineering experience,expertise in cloud,GenAI,Python/JavaScript,databases,containerization,strong communication and leadership.
Amazon Web Services (AWS), GenAI Models, Frameworks, and Tools, Python, JavaScript, React, MongoDB, PostgreSQL, Containerization (ex. Docker), Quantum Computing Tools
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1mo
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Senior Frontend Engineer (React.js / Micro Frontends)
Stamford, Connecticut, United States
$145k-$175k/yr OnsiteFull Time
Publicis Groupe
Publicis GroupeEuronext Paris: PUB: Global communications, advertising, and digital transformation holding.
5+ YOE5+ years frontend experience with React.js, JavaScript (ES6+), HTML5/CSS3, state management (Zustand/Redux/Context API), testing (Jest/React Testing Library), RESTful APIs, Microsoft Azure/Azure DevOps, CI/CD, module federation/micro frontends, performance, security, and accessibility.
React.js, JavaScript (ES6+), HTML5, CSS3, Material-UI, Styled Component, Webpack, Rollup, Storybook, React-Router-Dom, Zustand, Redux, Context API, Jest, React Testing Library, RESTful APIs, Microsoft Azure, Microsoft Azure DevOps, CI/CD, module federation, Docker, Next.js, DevExtreme DataGrid, ExcelJS
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1mo
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Senior Software Engineer, Calibration, Automation & Tools
New Haven, Connecticut, United States
$124k-$187k/yr HybridFull Time
D-Wave Quantum
D-Wave QuantumNYSE: QBTS: Provides commercial quantum computing systems, software, and cloud services.
5+ YOEBachelor's in CS/ECE/math/physics; 5+ years full‑stack experience; strong Python and another high‑level language (Java/Go/C/C++); front‑end frameworks (React/Angular/Vue.js); SQL and PostgreSQL/Oracle; Git, CI/CD, AWS; testing and strong communication.
Python, Java, Go, C, C++, React, Angular, Vue.js, PostgreSQL, Oracle, Git, AWS, CI/CD
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