94 api developer jobs at 54 companies in Durham, NH

PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
2mo
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API Technical Lead, VP
Burlington, Massachusetts, United States
$120k-$203k/yr OnsiteFull Time
State Street
State StreetNYSE: STT: Provides investment servicing and management to institutional investors.
10+ YOE3+ Mgmt10+ years in API design/delivery, enterprise APIs, REST with Java/C#, Kubernetes, CI/CD, security and governance.
Java, C#, REST, gRPC, OpenAPI/Swagger, API gateways, Kubernetes, CI/CD, OAuth2, OIDC, JWT, mTLS
2mo
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Senior QA Engineer - Automation & API
Portsmouth, New Hampshire, United States
$109k-$125k/yr OnsiteFull Time
Service Credit Union
Service Credit Union: Member-owned cooperative providing personal banking and credit services.
5+ YOESenior QA Engineer focused on automation and API; strong experience with .NET, API testing, and CI/CD integration; 5+ years QA experience; bachelor’s in computer science or related field.
Postman, SoapUI/ReadyAPI, WinAppDriver, Selenium, Playwright, Cypress, Git, Bitbucket Pipelines, Jira, MuleSoft, Anypoint Platform, Salesforce, RAML, WSDL, REST, SOAP, NUnit, xUnit, MSTest, C#, Java, JavaScript, TypeScript, Python, WinAppDriver, Winium
1mo
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Senior Software Engineer
Andover or Boston or New York or Chicago or Menlo Park or Manchester or London or Tokyo
$140k/yr OnsiteFull Time
Alumni Ventures
Alumni Ventures: Provides individual investors access to diversified venture capital funds.
6+ YOE6+ years building production applications; experience with JavaScript/Node.js and/or Python, PostgreSQL/MySQL, AWS, API integrations, full-stack development, modern/AI-assisted dev tools; authorized to work in the US.
Javascript, Node.js, Python, PostgreSQL, MySQL, AWS, AI-assisted development tools, NetSuite APIs, APIs
2d
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Platform Engineer
Merrimack or Westlake
OnsiteFull Time
Fidelity Investments
Fidelity Investments: Provides investment management, retirement planning, and brokerage services.
Experience building developer platforms and internal tooling at enterprise scale; knowledge of IDEs, Windows/macOS deployment, cloud (AWS/Azure/Google Cloud), CI/CD, APIs, and strong communication and collaboration skills.
VS Code, GitHub Copilot, Gemini Code Assist, AWS, Azure, Google Cloud, Kubernetes, CI/CD
1mo
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Software Sr Engineer
Burlington, Massachusetts, United States
OnsiteFull Time
RSA
RSA: Provides identity and access management cybersecurity software and services.
5+ YOE5+ years Android development with Kotlin/Java; security-focused mobile development; Agile experience; code reviews; test coverage; problem solving.
Android SDK, Kotlin, Java, MVVM, Jetpack, REST API, Multithreading, Security concepts
2mo
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Advanced Software Engineer
Wilmington, Massachusetts, United States
$120k-$165k/yr HybridFull Time
Symbotic
SymboticNasdaq: SYM: AI-powered robotics and software for warehouse automation.
5+ YOE5+ years in software development; fullstack with React/Angular, Node.js, and C# .NET; distributed, event-driven systems (Kafka, RabbitMQ, SignalR); REST APIs; mentorship and cross-functional collaboration.
React, Angular, Node.js, C# .NET, Kafka, RabbitMQ, SignalR, REST APIs
1mo
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Distinguished AI Engineer
Richmond or Indianapolis or Walnut Creek or Seattle or Grand Prairie or Winston-Salem or Chicago or Atlanta or Miami or Nashville or Tampa or Woburn or Norfolk
$231k-$417k/yr HybridFull Time
Elevance Health
Elevance HealthNYSE: ELV: Provides health insurance plans and integrated healthcare services.
15+ YOEBachelor's in CS/IT (or equivalent) and 15+ years software engineering experience; production AI/ML, LLM and agentic systems experience; strong Python/Java skills; APIs, microservices, cloud, CI/CD and DevOps experience required.
Python, Java, APIs, microservices, event-driven architectures, cloud platforms, CI/CD, DevOps, MLOps, LLMOps, Large Language Models (LLMs), agentic systems, distributed systems
1mo
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Intern Conversion: Software Developer
Poughkeepsie or Lowell or Durham or Bellevue or San Jose or Dallas
$88k-$152k/yr HybridFull Time, Internship
IBM
IBMNew York Stock Exchange: IBM: Global technology providing enterprise software, cloud, and consulting.
Must be currently enrolled in a Bachelor’s or Master’s in Computer Science or related field, available for an in-person full-time co-op (Jan–Jun 2026). Familiarity with HTML, CSS, JavaScript, React/Angular/Vue, backend tech (Node.js/Java/Python/SQL), Git/IDEs, APIs, containers, and cloud platforms. Must be able to work without visa sponsorship.
HTML, CSS, JavaScript, React, Angular, Vue, Node.js, Java, Python, SQL, Git, IDEs, APIs, IBM Cloud, AWS, Microsoft Azure, Linux, Unix, GO, NodeJS, Eclipse, Microsoft Visual Studio Code, PostgreSQL, MySQL, Db2, Oracle, SQL Server, Jenkins, Puppeteer, Selenium, Playwright, Cypress, Travis, REST API
2w
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Senior Software Engineer
Arlington or Woburn or Carlsbad or Aurora or Boston or Dayton or Melbourne
$140k-$170k/yr HybridFull Time
Systems & Technology Research
Systems & Technology Research: Develops advanced technology for national security and defense applications.
5+ YOEProven Java and Spring development experience, microservices and API design, containerized infrastructure (Docker/Kubernetes), experience with Kafka/NATS and GitLab, Python for AI/data integration, and ability to obtain Top Secret clearance.
Java, Spring Boot, Linux, Docker, Kubernetes, Kafka, NATS, GitLab, Python
3w
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Software Engineer III
Denver or Nashua or Augusta or Pinellas Park or Madison Heights
$125k-$145k/yr HybridFull Time
WOW!
WOW!: Provides broadband internet, cable television, and digital phone services.
3+ YOEFull-stack engineer with 3+ years building scalable web applications using Next.js and Node.js, strong AWS experience, REST/GraphQL APIs, serverless, CI/CD, AI-assisted tooling, and familiarity with web performance and accessibility standards.
Next.js, Node.js, REST API, GraphQL, Serverless, AWS, EC2, Lambda, S3, CloudFront, API Gateway, ECS, EKS, WAF, IAM, GitHub Copilot, Cursor, Claude, Contentful, Optimizely, LaunchDarkly, Google Analytics 4 (GA4), CI/CD
2mo
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Staff, Software Engineer
Seattle or Boston or San Francisco or Dallas or Salt Lake City or Portland
$141k-$173k/yr RemoteFull Time
WEX
WEXNYSE: WEX: Provides global payment processing and business information management services.
7+ YOE7-12 years of software development; API design; cloud infrastructure as code; Java; Kafka; Elasticsearch; AWS; Terraform; SQL/NoSQL; strong problem solving and collaboration.
Kafka, Elasticsearch, Java, AWS, Terraform, SQL, NoSQL
2d
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Integrations Developer
Durham or Keene or Plymouth or Concord
$70k-$125k/yr OnsiteFull Time
University System of New Hampshire
University System of New Hampshire: Providing public higher education and research through New Hampshire colleges.
3+ YOE3–5 years experience in application integration or middleware, Bachelor's degree required, experience with APIs, SQL Server, ETL, and enterprise integrations; strong communication and SDLC knowledge.
GIT, JavaScript, Java, SQL, SOAP, REST, WSQL, C/C++, Workday Studio, Workday Orchestrate, Extend, Workday Reports, EIB, XML, XSL, JSON, PowerFAIDS, TDClient, ISIR, COD
3w
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Senior Data Integration Software Engineer
Boston or Portsmouth or Plano or Indianapolis or Columbus or United States
HybridFull Time
Liberty Mutual
Liberty Mutual: Provider of global property and casualty insurance products.
5+ YOEDesign and develop scalable data integration solutions; 5+ years data integration experience; 3–5 years with AWS (Lambda, S3, Glue, Redshift); strong SQL, Python, ETL, APIs, CI/CD; understanding of SAP finance concepts; must be authorized to work in the US without sponsorship.
AWS Lambda, Amazon S3, AWS Glue, Amazon Redshift, SQL, Python, APIs, CI/CD, SAP S/4HANA, SAP FIORI
1mo
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Senior Software Engineer
Burlington, Massachusetts, United States
$140k-$165k/yr HybridFull Time
BrioHealth Solutions
BrioHealth Solutions: Developing advanced mechanical circulatory support systems for heart failure.
5+ YOEBachelor's in CS or related, 5+ years professional C#/.NET experience, Windows app (WinForms/WPF) and cloud (Azure/AWS) experience, multithreading and backend/API development, ability to work onsite in Burlington, MA 3+ days/week.
C#, .NET, WinForms, WPF, WinUI, .NET MAUI, Azure, AWS, CI/CD
4w
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Senior Java Developer (Irving, TX, US)
Irving or Westlake or Merrimack
$86k-$127k/yr OnsiteFull Time
Capgemini
CapgeminiEuronext Paris: CAP: Provides global IT consulting and digital transformation services.
10+ YOE10+ years Java/J2EE experience with Spring/Spring Boot, API design, microservices, cloud (Docker, Kubernetes, AWS/Azure), CI/CD tools (GitHub, Jenkins, uDeploy), relational DB (DB2/Oracle), JPA/Hibernate, strong communication and leadership skills.
Java, J2EE, Spring, Spring Boot, Docker, Kubernetes, AWS, Azure, GitHub, GIT, Jenkins, uDeploy, Stash, JPA2, Hibernate, DB2, Oracle, PL/SQL, SQL, Sonar, HP Operations Orchestration, HP Service Manager, ServiceNow, REST API
2mo
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Staff Software Engineer (Agentic AI)
Lowell, Massachusetts, United States
$130k-$186k/yr HybridFull Time
UKG
UKG: Provider of workforce management and human capital management software.
7+ YOEBachelor's degree, 7+ years software development (2+ years building agentic/LLM systems). Experience with agentic frameworks, Python/Java/C#/JavaScript/TypeScript, cloud platforms, GitHub, APIs, and agent architecture.
Google ADK, Anthropic Claude SDK, LangChain, LangGraph, AutoGen, Crew AI, Vertex AI, Azure OpenAI, Bedrock, GitHub, Model Context Protocol (MCP), REST APIs, function calling, Python, Java, C#, JavaScript, TypeScript
1w
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Senior Software Engineer- Cable Backplane Systems
Yocumtown or Nashua or Raleigh or Austin
OnsiteFull Time
Amphenol
AmphenolNYSE: APH: Designs and manufactures electrical connectors and interconnect systems.
8+ YOE8+ years software engineering experience, BS in CS/CE (MS preferred), experience designing large data platforms, APIs, databases, pipelines, EM/ML workflows, and technical leadership/mentoring skills.
MES, APIs, CI/CD, AI/ML
1w
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Senior Software Engineer- Cable Backplane Systems
Valley Green or Nashua or Raleigh or Austin
OnsiteFull Time
Amphenol
AmphenolNYSE: APH: Manufactures electronic and fiber optic connectors and interconnect systems.
8+ YOEBS in CS/CE required (MS preferred); 8+ years software engineering experience with large-scale data platforms, databases, pipelines, APIs, analytics/AI/ML workflows, technical leadership, and mentoring.
MES, APIs, CI/CD, AI/ML
3mo
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Senior Microsoft Dynamics 365 CRM Developer
Salem, New Hampshire, United States
OnsiteFull Time
Tokio Marine HCC
Tokio Marine HCCTokyo Stock Exchange: 8766: Underwrites specialty insurance and provides global travel assistance services.
5+ YOE5+ years in Dynamics 365 CRM, Azure, and Power Platform; strong web development skills (C#, ASP.NET, JavaScript, HTML, CSS); API development; SQL Server; Agile/Scrum experience.
C#, ASP.NET, JavaScript, HTML, CSS, SQL Server, Azure, Power Apps, Power Automate, Git, Docker, Jenkins
3w
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Software Developer II
Westbrook or Maine or New Hampshire or Massachusetts
$90k-$100k/yr HybridFull Time
IDEXX
IDEXXNASDAQ: IDXX: Diagnostic equipment and software for veterinary and water testing.
2+ YOE2+ years software engineering; frontend and backend experience; NodeJS or Java; JavaScript/TypeScript and React; AWS serverless (RDS, DynamoDB, API Gateway, Lambda, S3); SQL; Datadog; GitHub and CI/CD; Agile experience.
NodeJS, Java, JavaScript/TypeScript, React, AWS, RDS, DynamoDB, API Gateway, Lambda, S3, SQL, Datadog, AWS Cloudwatch, GitHub, AWS CodePipeline