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48 senior fullstack developer jobs at 39 companies in Fairfield, CT

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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
2w
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Senior Fullstack Engineer, Postman Insights
San Francisco or Boston or Austin or New York City or Tokyo or London or Bangalore
OnsiteFull Time
Postman
Postman: Platform for building, testing, and managing software APIs.
Senior fullstack engineer with strong track record launching user-facing frontend and backend features, architecture experience, driving large projects, fast startup experience, product focus, AI familiarity, and ability to work from San Francisco office 5 days/week.
Postman Insights, Postman
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1mo
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Senior Fullstack Engineer
New York City, New York, United States
$185k-$215k/yr HybridFull Time
Copilot Money
Copilot Money: Mobile application for automated personal expense and budget management.
6+ YOE6+ years software engineering; experience with Node.js, React, TypeScript; backend API design; cloud experience; AI tooling; NYC-based; strong communication.
Node.js, React, TypeScript, GCP, AWS, Cloudflare, Firebase, CI/CD, AI coding tools
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3w
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Fullstack Developer
New York City, New York, United States
$215k-$236k/yr OnsiteFull Time
Manifest OS
Manifest OS: AI-native platform powering high-performance, fixed-fee law firms.
7+ YOE7+ years shipping fullstack TypeScript (React/Next.js and Node.js); strong PostgreSQL/relational DB skills; production APIs; hands-on cloud experience (GCP preferred); daily use of AI coding tools.
Cursor, Copilot, v0, Node.js, TypeScript, React, Next.js, PostgreSQL, GCP, AWS, Azure
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3d
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Fullstack Engineer
New York City, New York, United States
$180k-$275k/yr OnsiteFull Time
General Intuition
General Intuition: Developing foundation models for AI spatial reasoning and agency.
5+ YOE5+ years fullstack experience, proficiency with React/Redux/Node.js, ownership of end-to-end features, performance and profiling experience, familiarity with real-time video, payments, and social API integrations.
React, Redux, Node.js, Electron, Styled Components, C#, C++, Swift, Kotlin, Java, Redis, RabbitMQ, Kubernetes, Terraform, Salt, GitHub Actions, CircleCI
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2w
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Senior Fullstack Engineer
New York, New York, United States
$112k-$180k/yr OnsiteFull Time
Publicis Groupe
Publicis GroupeEuronext Paris: PUB: Global advertising and digital transformation agency holding.
6+ YOE6+ years building production web applications; strong front-end (React, TypeScript, Next.js) and back-end (Python, FastAPI) experience; SQL comfort; experience with cloud platforms, Databricks, CI/CD, and integrating UIs with long-running job systems.
React, TypeScript, Next.js, Python, FastAPI, SQL, JSON, Databricks, Genie, AWS, Google Cloud, CI/CD
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2w
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Senior Fullstack Engineer
New York, New York, United States
$112k-$180k/yr HybridFull Time
Publicis Groupe
Publicis GroupeEuronext Paris: PUB: Global communications, advertising, and digital transformation holding.
6+ YOE6+ years building internal/enterprise web apps; strong front-end (React, TypeScript, Next.js), backend Python with async frameworks (FastAPI), REST/JSON, and SQL; experience with job orchestration, long-running workflows, and cloud data platforms.
React, TypeScript, Next.js, Python, FastAPI, REST APIs, JSON, SQL, Databricks, AWS, Google Cloud, CI/CD, Genie
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3w
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Senior Software Engineer, Fullstack (Healthcare)
New York City, New York, United States
$225k-$300k/yr OnsiteFull Time
CLEAR
CLEARNYSE: YOU: Secure biometric identity platform for travel and venue access
6+ YOE6+ years fullstack experience; deep knowledge of healthcare interoperability (FHIR, HL7 v2), EHR integrations (Epic), secure API/authentication, and identity assurance standards; strong backend/frontend skills.
Python, React, TypeScript, AWS, FHIR, HL7 v2, Epic, Interconnect, TEFCA, QHINs, Carequality, NIST IAL2
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1w
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Fullstack Developer
Berkeley Heights or New York City
FieldFull Time
Orion Innovation: Provides digital transformation, software engineering, and cloud services.
5+ YOEBachelor's degree or equivalent, 5+ years writing production code, experience with Django/Rails/Laravel, Python required, strong React skills, unit/integration testing, collaboration with product teams.
Django, Rails, Laravel, Python, React
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1mo
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Fullstack Developer (US)
New Jersey or New York City or San Francisco
OnsiteFull Time
Lynx Analytics
Lynx Analytics: Provides graph-based AI and big data analytics solutions for enterprises.
5+ YOEBachelor's in CS, 5+ years full-stack development across front- and back-end, experience with React/Next.js and Python, cloud-native experience, overlap 3 hours/day with Pacific Time, strong communication.
React, Next.js, Jest, React Testing Library, Python, AWS, Azure, GCP, Docker, Kubernetes, CI/CD
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3d
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Senior Fullstack Product Engineer (Go)
London or New York City or San Francisco or Palma or Casablanca
OnsiteFull Time
Nuitée
Nuitée: Provides API infrastructure for the global travel industry.
Experienced Go backend and modern frontend (Next.js/Vue.js) developer with product focus, UX judgement, and ability to own features end-to-end.
Golang, Next.js, Vue.js
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1mo
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Senior Fullstack Engineer - Growth + Onboarding
New York City or San Francisco or Los Angeles
$180k-$210k/yr HybridFull Time
Pivotal Health
Pivotal Health: AI platform automating healthcare insurance claim disputes for providers.
6+ YOE2+ Mgmt6+ years software engineering experience with recent backend work, 2+ years managing engineers, experience with integrations and third-party APIs, customer-facing communication, Python familiarity, and Bachelor's in STEM preferred.
EDI, 835/837, HL7, FHIR, ICD-10, CPT, Epic, Cerner, SFTP, Python
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1mo
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Senior Fullstack Engineer, Growth & Monetization
New York City or San Francisco or Boston
$175k-$240k/yr OnsiteFull Time
LangChain
LangChain: Tools for building and deploying production-ready AI agents.
Extensive full-stack experience with React, TypeScript, and Go and/or Python; familiarity with Postgres, Redis, REST APIs, usage metering, subscriptions, and monetization systems; strong product intuition and analytics-driven mindset.
LangSmith, LangChain, LangGraph, Deep Agents, LangSmith Engine, React, TypeScript, Python, Go, REST APIs, Postgres, Redis
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1mo
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(Senior) Fullstack Developer (m/f/d)
New York, New York, United States
OnsiteFull Time
eigenblue
eigenblue: An R&D building AI-driven multidisciplinary systems that design and deliver custom physical solutions.
3+ YOEUniversity degree in CS or related, 3+ years agile software development, strong JavaScript/TypeScript (React, Vue, Node.js), Python (Django/FastAPI), Docker, Kubernetes, CI/CD, cloud experience (AWS/Azure/GCP), and production deployment expertise.
React, Vue, JavaScript, TypeScript, Node.js, Python, Django, FastAPI, Docker, Kubernetes, CI/CD, AWS, Azure, GCP, GraphQL, Neo4j
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1mo
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Staff Fullstack Engineer
New York City or San Francisco
HybridFull Time
Dispatch
Dispatch: Syncing client data across financial advisor software tools.
10+ YOE10+ years engineering experience; deep Node and React proficiency; track record architecting and shipping high-scale production systems; experience setting technical direction across teams; startup experience preferred.
React, Node, Fastify, MUI, React Query, Vite, Storybook, Playwright, Go, Postgres, gRPC, Protobuf, Redis, AWS, Terraform, GitHub Actions
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2mo
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Staff Fullstack Engineer
New York City, New York, United States
$200k-$230k/yr HybridFull Time
Campus
Campus: Provides accredited online associate degrees through live faculty instruction.
6+ YOE6–8 years software engineering; backend focus with Go or Python; React experience; strong ownership and collaboration.
Go, Python, React, APIs, CI/CD, Testing
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2mo
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Senior Fullstack Software Engineer - Apple TV Sports
New York City, New York, United States
OnsiteFull Time
Apple
AppleNASDAQ: AAPL: Designs and sells consumer electronics, software, and online services.
5+ YOE5+ years in software engineering; strong Java backend; frontend with React/Vue; TypeScript/JavaScript; REST/GraphQL; Postgres/Redis; Kafka; MSc/BSCS-equivalent
Java, TypeScript, JavaScript, React, Vue, HTML5, CSS3, REST, GraphQL, PostgreSQL, Redis, Kafka, Kubernetes
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1w
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Fullstack Engineer
New York, New York, United States
$110k-$140k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
6+ YOEExperience with Angular, React, Node.js, Python, JavaScript, TypeScript, UI/UX and databases; architecture and cloud-native design experience; BSc in Computer Science; 6+ years experience.
Angular, React, Node.js, Python, JavaScript, TypeScript, Material UI, MongoDB, Postgres, AWS, Azure, GCP, CI/CD
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2mo
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Senior Fullstack Experiences Software Engineer
New York, New York, United States
HybridFull Time
Flowcode
Flowcode: Provides QR code platforms and mobile-first landing page solutions.
5+ YOE5–7+ years in software development; strong backend experience; proficient in modern frontend frameworks; cloud and container experience; focus on performance and code quality.
React, Next.js, Svelte, Go, Python, Java, C#, Docker, Kubernetes, AWS, GCP, CI/CD, SQL, NoSQL
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1mo
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Senior Fullstack Software Engineer (.Net and Angular)
Budapest or New York City or Washington or London or Galway or Munich or Bengaluru or Singapore or Sydney
HybridFull Time
Diligent
Diligent: Provides software for corporate governance, risk, and compliance management.
5+ YOEBachelor's in CS/Math/Engineering (or equivalent), 5+ years commercial software engineering, strong Angular and C#/.NET experience, AWS/cloud-native design, CI/CD and containerization familiarity, Git/GitHub, and mentoring skills.
Angular, C#, .NET, TypeScript, JavaScript, HTML, CSS, RxJS, NgRx, Redux, ASP.NET Core, Entity Framework Core, OpenAPI / Swagger, AWS, ECS/Fargate, Lambda, SQS, SNS/EventBridge, S3, DynamoDB, Step Functions, Nx, Angular Material, AWS CDK, Terraform, Docker, GitHub Actions, .NET Aspire, gRPC, Polly, Git, GitHub, CI/CD
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1mo
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Staff Software Engineer - Fullstack
San Francisco or New York City or London or Sydney
$240k-$270k/yr OnsiteFull Time
Sigma Computing
Sigma Computing: Cloud-native analytics platform featuring a spreadsheet-style interface.
10+ YOE10+ years building and deploying high-quality web software; strong CS fundamentals; experience with Rust, Go, GraphQL, and TypeScript; continuous deployment and distributed systems experience preferred.
Rust, Go, GraphQL, TypeScript, SQL, Python
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