17 full stack api developer jobs at 14 companies in Danbury, CT
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Full Stack Developer (.NET API) - Senior Software Engineer
Stamford, Connecticut, United States
OnsiteFull Time
Information Services GroupNASDAQ: III: Provides technology research and advisory services for digital transformation.
6+ YOEBachelor's in computer science or related field, 6+ years full-stack experience with .NET Core API, Angular and SQL Server, strong C#/Web API and front-end (HTML/CSS/JavaScript) skills, REST API experience, communication and leadership abilities.
Angular, .NET Core, SQL Server, C#, Web API, HTML, CSS, JavaScript, Microsoft Azure, Git
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/yrHybridFull Time
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.
5+ YOEBachelor's or higher in CS/ECE/math/physics, 5+ years full‑stack experience, strong Python and another high‑level language (Go/C++/Java), front‑end frameworks (Vue.js/React), AWS, SQL/PostgreSQL, Git, Docker, Kubernetes, RESTful APIs, testing, and mentorship experience.
Hartford or Indianapolis or Phoenix or Raleigh or Richardson
OnsiteFull Time
InfosysNYSE: INFY: Provides IT consulting, software development, and business outsourcing services.
Design and develop backend and server-side applications using Java, Spring, Node.js; implement reactive patterns, APIs, and event-driven solutions; bachelor\u0002s degree or equivalent experience required.
Java 11, Java 17, Spring Boot, Spring Reactive (WebFlux), Node.js, Express.js, Confluent Kafka, Kafka, RabbitMQ, Oracle, PostgreSQL, MySQL, Microsoft SQL Server, React
Chefman: Designs and manufactures innovative small kitchen appliances.
7+ YOE7+ years full-stack development with finance/ERP experience; strong ASP.NET/.NET Core, C#, SQL, Entity Framework, Angular, NGRX, SignalR, RESTful APIs, and Git; experience integrating with QuickBooks/NetSuite/SAP and understanding financial workflows.
Farmington or Connecticut or Florida or Georgia or Iowa or Illinois or Maryland or Massachusetts or North Carolina or New York or Ohio or Rhode Island or South Carolina or Tennessee or Virginia
$100k/yrOnsiteFull Time
Digital United: Operates a collective of specialized digital marketing agencies.
5+ YOE5+ years Drupal development experience (Drupal 9 & 10), strong PHP/Twig/MySQL skills, HTML/CSS/JavaScript/Sass, Composer, Drush, Git, NPM, API integration, custom module and theme development, performance optimization.
Full Stack Staff Software Engineer — AI-Augmented Development
Charlotte or Hartford or Columbus or Chicago
$116k-$174k/yrHybridFull Time
The HartfordNYSE: HIG: Provides business and personal insurance, group benefits, and investments.
10+ YOE10+ years software engineering experience, 5+ years tech lead experience; Bachelor’s in CS or related (or equiv. experience); expertise in frontend and backend stacks, cloud (AWS/GCP), CI/CD, databases, APIs, and AI-augmented development tools.
Founding Software Engineer - AI & Operations (Full-Stack)
Wallingford, Connecticut, United States
OnsiteFull Time
United Concrete Products: Manufacturer of precast and prestressed concrete infrastructure products.
3+ YOE3+ years engineering experience with ownership of a production system; strong full‑stack fundamentals, SQL, LLM API production integrations, OCR/document extraction, and self-directed problem solving.
OpenAI, Anthropic, OCR, MaintainX, Claude Code, Copilot, SQL
Interactive BrokersNASDAQ: IBKR: Automated global electronic brokerage and trading services provider.
Experienced full-stack Java developer with Vert.x, Vue.js, Oracle SQL and RESTful API experience; familiarity with front-end technologies, CI/CD, and financial services systems.
InfosysNYSE: INFY: Provides IT consulting, software development, and business outsourcing services.
Experience with Java (8/11), Spring Boot, microservices, Hibernate, RESTful APIs, AWS; frontend experience with Angular/React; MySQL; bachelor's degree or equivalent; authorized to work in the US without employer sponsorship.
Lafayette or Bloomfield or Raleigh or Dallas or Austin
$81k-$141k/yrHybridFull Time
CGINYSE: GIB: Provides information technology and business consulting services.
8+ YOE8+ years Java full‑stack experience with Azure, microservices, REST APIs, Spring Boot, Docker/AKS, CI/CD, and RDBMS/NoSQL; bachelor’s degree preferred.
Azure, RESTful (Rest-APIs), Java, Java 8, Spring Boot, Camel, Fuse, Docker, Azure Kubernetes Service (AKS), RDBMS, NoSQL, git, CI/CD, Openshift, Spring, Spring Batch
3+ YOE3+ years backend/full-stack engineering with expert Python and strong TypeScript/React skills; experience building REST/GraphQL APIs, Django/DRF, Celery/Temporal, PostgreSQL, MCP protocol familiarity, and cloud (AWS/GCP).
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
8+ YOE8+ years in data architecture/engineering with strong Dataiku (DSS), Azure data stack, Python and SQL skills; experience designing production data pipelines, ETL/ELT, data modeling, API integrations, and mentoring teams.
Dataiku (DSS), SQL, Python, Azure Data Factory, Azure Synapse, Azure SQL, Data Lake
InfosysNYSE: INFY: Provides IT consulting, software development, and business outsourcing services.
Bachelor's or equivalent; experience with C#, .NET/.NET Core (ASP.NET Core, MVC, Web API), full stack development, Angular/React, HTML5/CSS3/JavaScript; familiarity with Microsoft SQL Server, Git, microservices; US work authorization required.
C#, .NET, .NET Core, ASP.NET Core, MVC, Web API, Angular, React, HTML5, CSS3, JavaScript, Microsoft SQL Server, Git