121 api developer jobs at 82 companies in Patchogue, NY
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Full Stack Developer (.NET API) - Senior Software Engineer
Stamford, Connecticut, United States
OnsiteFull Time
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
1w
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Director, eCommerce Syndicated API Platforms
Stamford or St. Louis or Greenwood Village
HybridFull Time
10+ YOE3+ MgmtBachelor's degree or equivalent,10+ years in technical program delivery or API platforms,9+ years partner enablement,API strategy and integrations,leadership in launch planning and stakeholder alignment,strong API and developer experience skills.
REST APIs, API gateway, cloud-based platforms
1mo
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Middle Office Software Developer
Norwalk or Rowayton
$115k-$200k/yr OnsiteFull Time
5+ YOEBachelor's in computer science, 5+ years software development in financial services, experience with C#, Windows and web frameworks, SQL Server, messaging/SOA/APIs, Agile and unit/integration testing.
C#, Windows Forms, WPF, ASP.NET MVC, Angular, JavaScript, Web API, SQL Server, MOM, SOA, APIs, Agile, Coding agents and AI-assisted development tools
1d
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GTM Engineer
United States or Canada or Brooklyn
RemoteFull Time
2+ YOERequires 2–5 years of software engineering experience, AI tools and LLM/agent development, modern GTM stack experience, API integrations, production systems experience, and strong communication and product judgment.
Claude Code, Cursor, Codex, RAG, Clay, HubSpot, Salesforce, Apollo, Cargo, Gong, Outreach, Instantly, APIs, webhooks, LLMs
2mo
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Android Developer Experience Lead
Holtsville or Lincolnshire or Austin or Kennesaw
$139k-$208k/yr HybridFull Time
10+ YOELead Android Developer Experience; 10+ years with Bachelor's or 7+ years with Advanced Degree; Android platform expertise; API/SDK design; Java and Kotlin proficiency.
Android Studio, Gradle, Java, Kotlin, APIs, SDKs
1mo
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Application Developer Analyst Levels 1 - 2
Jamaica, New York, United States
$57k-$90k/yr HybridFull Time
1+ YOEExperience with C++, Node.js, PHP, JavaScript, HTML, relational databases, Web API development in Linux; bachelor’s degree or 1–5+ years software development experience depending on level; ability to handle production issues outside normal hours.
C++, Node.js, PHP, JavaScript, HTML, relational databases, Web API, Linux, Windows
1mo
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Associate, Developer
New York, New York, United States
$110k-$130k/yr OnsiteFull Time
2+ YOEBachelor's in CS/IT or related plus 2 years developer experience in financial services; experience with Java, Spring Boot, Django, React, Python, SQL, HTML5/CSS3, AWS S3, Jenkins, Git, CI/CD, REST APIs and microservices.
Java, Spring Boot, Django, React, JavaScript, Python, SQL, HTML5, CSS3, Freemarker, Selenium, Cron Jobs, Spring Scheduler, Keycloak IAM, LDAP, Role Based Access Control (RBAC), Single Sign-On (SSO), Redis, Guava Cache, Parallel Processing, Spring Performance Libraries, REST APIs, Microservices, Data Lineage, Data Governance, AWS S3, Jenkins, Git, CI/CD, Agile, Scrum, Unit Testing, QA Automation, Automation, System Design, Performance Optimization, Enterprise Integration, Reporting Pipelines, Stress-testing workflows, Legacy System Migration, Process Optimization, FIX
4d
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Staff Software Engineer - SaaS integrations,API Designs - Travel & Lifestyle Services
Phoenix or New York City
$144k-$256k/yr OnsiteFull Time
10+ YOE10+ years building and operating large-scale distributed systems, ownership of third-party/SaaS integrations, API design, resilience, data quality, security, and cross-team influence.
AWS
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Senior Frontend Developer
Greenwich, Connecticut, United States
HybridFull Time
5+ YOE5+ years commercial SPA development experience; degree in CS or related; strong JavaScript/HTML/CSS skills; experience with Vue/React/Angular, TypeScript, webpack/Vite, API integration, and AI/agentic development tools.
Vue 3, TypeScript, VueJs, Vuex, Pinia, Vite, Cypress, webpack, React.js, Angular.js, Claude Code, JavaScript, HTML, CSS, LESS
1mo
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Application Developer
Bronx, New York, United States
$115k/yr OnsiteFull Time
5+ YOE5+ years .NET development experience with C#, web/client-server development, Microsoft Azure services, Oracle or Microsoft SQL Server, SDLC (Agile/Waterfall), and production support; bachelor’s degree preferred or equivalent experience.
Oracle, Microsoft SQL Server, C#, .NET, .NET (4.5), .NET (4.7), .NET (4.8), .NET Core, MVC, ADO.NET, Web Services, Web APIs, HTML5, CSS, JavaScript, jQuery, Bootstrap, WPF, MVVM, XAML, PHP, ASP, Python, Telerik UI, Node.js, React, Azure App Service, Azure Functions, Azure WebJobs, Azure Logic Apps, Azure Blob Storage, Microsoft Azure DevOps, Microsoft Active Directory, Microsoft SharePoint, Microsoft identity platform
1mo
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Sr. Software Engineer
Miami or Shelton
OnsiteFull Time
5+ YOEBachelor's or equivalent experience, 5+ years production software development, strong with Node.js/TypeScript/Java/C#, serverless AWS (Lambda, API Gateway, DynamoDB, SQS/SNS), REST/GraphQL APIs, CI/CD and Git workflows, Terraform/IaC, and daily use of AI-assisted development tools (GitHub Copilot, Claude).
AWS Lambda, API Gateway, DynamoDB, SQS, SNS, Node.js, TypeScript, JavaScript, Java, C#, Terraform, GitHub, Azure DevOps, Dynatrace, OpenAPI, Swagger, GitHub Copilot, Claude, Git, GitHub Actions, Datadog, CloudWatch, Akamai, CloudFront, OAuth 2.0, OpenID Connect, AWS Cognito, React Native
2w
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C# .NET Developer
East Haven, Connecticut, United States
OnsiteFull Time
2+ YOE.NET Framework/.NET Core and C# experience, Blazor, SQL Server (2016+), REST/SOAP, Visual Studio, Git, HTML/CSS/JavaScript, web API development, Agile experience.
.NET Framework, .NET Core, Blazor, C#, SQL Server 2016, ASP.NET, ADO.NET, REST, SOAP, Visual Studio, Git, HTML, CSS, JavaScript, JSON, AJAX, Wrike, Jira, bash, PowerShell, cmd
3d
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Senior AI Engineer
Greenwich, Connecticut, United States
OnsiteFull Time
Bachelor's degree or equivalent experience; enterprise technology integration, LLMs, generative AI, Python, GCP, APIs, SDLC, Agile, and secure production AI application experience required.
Large Language Models (LLMs), ADK, LangChain, Google Cloud Platform (GCP), Python, Vertex AI, Cloud Run, BigQuery, Retrieval-Augmented Generation (RAG), HRIS, CRM, ERP, APIs, SDLC, Agile
2mo
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HL7 Application Developer
Queens, New York, United States
$80k-$123k/yr HybridFull Time
3+ YOEFull stack development experience; DOT.NET C# with Visual Studio; SQL Server/SSIS; RESTful API; HL7/FHIR data exchange; health data systems; strong communication; independent and collaborative work style.
.NET C#, Visual Studio, SQL Server, SSIS, Stored Procedures, RESTful API, HL7, FHIR, Python, Microsoft Office Suite
3d
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Senior AI Engineer
Greenwich, Connecticut, United States
OnsiteFull Time
Bachelor's degree or equivalent experience; enterprise technology and generative AI experience; Python, LLMs, orchestration frameworks, GCP, API integration, SDLC, Agile, and secure scalable application development.
Large Language Models (LLMs), ADK, LangChain, Google Cloud Platform, Vertex AI, Cloud Run, BigQuery, Python, Retrieval-Augmented Generation (RAG)
2w
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Software Solutions Engineer
Bronx, New York, United States
$90k-$120k/yr OnsiteFull Time
1+ YOE1–3 years development experience; hands-on Google Workspace/Google Cloud (Apps Script, Sheets/Drive APIs); familiarity with web frameworks, REST APIs, data modeling, BigQuery preferred, SSO (SAML/OAuth); strong analytical and communication skills.
Google Apps Script, Sheets API, Drive API, Google Cloud, BigQuery, REST APIs, SAML, OAuth, Veracross, ADP, Lever
1d
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Lead Applications Developer - Regeneron Genetics Center
Tarrytown, New York, United States
$110k-$179k/yr HybridFull Time
4+ YOEBachelor's degree or higher and 4+ years of relevant IT experience building cloud-native applications; requires Python, TypeScript, REST APIs, AWS, databases, ETL, Docker, and AI tooling experience.
Python, TypeScript, REST API, Claude Code, GitHub Copilot, PostgreSQL, MySQL, Amazon Redshift, Snowflake, Docker, AWS
3w
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Business Process Analyst, UiPath Developer - Associate/ Assistant Vice President
Greenwich or New York City
$100k-$150k/yr HybridFull Time
3+ YOEBachelor's degree and 3+ years in business process analysis or RPA development with UiPath, REFramework, SQL, API integrations, Python or .NET, enterprise platform exposure, and strong communication skills.
UiPath Studio, UiPath Orchestrator, UiPath Assistant, REFramework, SAP, Salesforce, ServiceNow, SQL, Excel, API, Python, VB.NET, C#, Git, Docker, JIRA, Confluence, REST, SOAP, Postman, Microsoft Power Platform, UiPath Process Mining, Celonis, AWS
1mo
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Sr Software Development Engineer
Houston or Greenwich
$93k-$232k/yr HybridFull Time
10+ YOE10+ years software development experience; proficiency in .NET and/or Java; cloud (AWS/Azure) experience; hands-on coding, API and database design, CI/CD and Git; healthcare claims or analytics domain experience preferred.
.NET, Java, AWS, Azure, FHIR, HL7, CI/CD, Git
3w
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Software Engineer I
Grand Rapids or Uniondale or Austin or Atlanta
$100k-$150k/yr HybridFull Time
1+ YOE1+ year software engineering experience; strong skills in Python or JavaScript/TypeScript; familiarity with APIs, integrations, automated testing, debugging; comfortable with AI-assisted development (Claude Code preferred); onsite collaboration required.
Python, JavaScript, TypeScript, Claude Code
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