102 api engineer jobs at 55 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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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
2mo
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Senior Electrical Engineer
Woburn, Massachusetts, United States
OnsiteFull Time
Boyd Corporation
Boyd Corporation: Manufacturer of engineered material and thermal management solutions.
5+ YOE5+ years designing, programming, and maintaining control systems; PLC programming; HMI development; RS-232/RS-485/Ethernet/SNMP/REST API; bachelor's in Electrical Engineering; on-site travel.
PLM software, Oracle ERP Cloud, Oscilloscopes, DVMs, RS-232, RS-485, Ethernet, SNMP, REST API, PLC programming, HMI development
3w
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Senior Electrical Engineer
Woburn or Billerica
$125k-$160k/yr OnsiteFull Time
Eaton
EatonNYSE: ETN: Intelligent power management delivering energy-efficient solutions.
5+ YOEBachelors in electrical or related field required; 5+ years designing and maintaining control systems; 3+ years PLC/HMI experience; experience with PLC protocols (RS-232, RS-485, Ethernet, SNMP, REST API), schematics, PID control, and firmware/PCBA work.
PLM software, MRP software, Oracle Cloud, PLC, HMI, PCBA, Mixed Signal Oscilloscope, DVM, RS-232, RS-485, Ethernet, SNMP, REST API, PID
3mo
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Senior Software Systems Engineer
Newington, New Hampshire, United States
OnsiteFull Time
SubCom
SubCom: Designs, manufactures, and installs subsea fiber optic cable systems.
Graduate STEM degree required; proficiency in C++, C#, SQL, ReactJS, RESTful/OpenConfig APIs, Linux (Red Hat); experience with automated testing, source control, security, and strong written/verbal communication.
C++, C#, SQL, ReactJS, RESTful APIs, Open API, OpenConfig, Linux, Red Hat
1w
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Senior Software Engineer - AI Research Clusters
Santa Clara or Austin or Westford or United States or Hillsboro or Durham
$152k-$288k/yr HybridFull Time
NVIDIA
NVIDIANASDAQ: NVDA: Designs graphics processing units and artificial intelligence hardware.
5+ YOEBS/MS in CS or Engineering (or equivalent), 5+ years software/platform engineering including 3+ years in ML infrastructure or distributed systems, strong coding in Python/C++/Rust, experience with Docker, Kubernetes, GitLab CI, Linux, and AIOps/Agentic AI.
Python, C++, Rust, Docker, Kubernetes, GitLab CI, Linux, Slurm, JavaScript, CSS, REST API
4d
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Senior Engineer - Genesys Cloud
United States or Exeter
HybridFull Time
NWN Carousel
NWN Carousel: Provider of AI-powered cloud communications and hybrid work solutions.
6+ YOE6+ years contact center/telephony experience with Genesys Cloud, strong SIP/VoIP and REST API skills, troubleshooting ability, communication and documentation skills, willingness for on-call support.
Genesys Cloud, Architect, SIP, VoIP, REST APIs, PowerShell, Python, AWS, Azure
5d
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Design Automation Engineer, Architectural Design and BIM
Boston or Andover
HybridFull Time
Reframe Systems
Reframe Systems: Builds sustainable modular homes using robotic microfactories.
3+ YOEBachelor's in architecture or engineering or equivalent,3+ years design/CAD/BIM automation experience,Revit integrations,Dynamo/pyRevit,Python or TypeScript,API integration,parametric design,and rapid prototyping with coding agents.
Revit, Dynamo, pyRevit, Autodesk Platform Services, Autodesk Build, Python, TypeScript
3w
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Senior Principal Software Engineer/Architect
Lowell or Atlanta or Alpharetta or Sunrise or United States
$207k-$298k/yr HybridFull Time
UKG
UKG: Provider of workforce management and human capital management software.
12+ YOE~12+ years engineering experience designing SaaS multi-tenant systems, AI/ML (LLM) productionization, M&A technical diligence and cloud/SRE expertise; strong communication and architectural leadership.
Kubernetes, AWS, GCP, Azure, CI/CD, MLOps, LLM, ETL/ELT, feature store, API
1mo
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Principal / Senior Software Engineer (C++, Linux)
Salem, New Hampshire, United States
OnsiteFull Time, Contract
Analogic
Analogic: Provides imaging and detection technology for healthcare and aviation.
Strong C++ and Linux experience, Python scripting familiarity, microservices (REST APIs, MQTT), production distributed systems support, debugging, releases, and technical documentation skills.
C++, Python, Linux, REST APIs, MQTT
2d
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Sales Engineer - Veterinary Software
Westbrook or United States
$120k/yr HybridFull Time
IDEXX
IDEXXNASDAQ: IDXX: Diagnostic equipment and software for veterinary and water testing.
5+ YOEBachelor's or equiv in CS/Engineering/Vet Tech,5+ years in sales engineering/pre-sales for SaaS or veterinary tech,deep PIMS experience (ezyVet/Neo/Cornerstone),APIs and integrations expertise,knowledge of sales methodologies,excellent communication.
ezyVet, Neo, Cornerstone, APIs, SPICED, MEDDPICC, Sandler
1w
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Senior Data Engineer
Durham or Merrimack
OnsiteFull Time
Fidelity Investments
Fidelity Investments: Provides investment management, retirement planning, and brokerage services.
Extensive data engineering experience with Oracle PL/SQL, AutoSys, ETL, Informatica, Snowflake, SQL, and data modeling; familiarity with Java/Python, REST API, AWS, DevOps tools, Agile, and on-call production support.
Oracle PL/SQL, AutoSys, Informatica, Snowflake, SQL, Java, Python, REST API, AWS, Maven, Jenkins, Git, Docker, Kanban, SCRUM
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
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
3w
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Infrastructure Engineer - Azure Cloud, AVP
Burlington, Massachusetts, United States
$90k-$158k/yr OnsiteFull Time
State Street
State StreetNYSE: STT: Provides investment servicing and management to institutional investors.
5+ YOE5+ years cloud/infrastructure experience with demonstrated Microsoft Azure deployment experience; strong scripting (PowerShell, Bash, Python), IaC, AD/Entra ID/IAM, monitoring, CI/CD, security and compliance expertise; Bachelor's in technical/analytical field required.
Microsoft Azure Virtual Machines, Microsoft Azure Virtual Network (VNET), Microsoft Azure Firewall, Microsoft Azure Storage, Microsoft Key Vault, DNS, Microsoft Application Gateway, Load Balancer, Microsoft App Service, API Gateway, Active Directory, Microsoft Azure Active Directory, Entra ID, Lightweight Directory Access Protocol, Microsoft Azure Monitor, Microsoft Log Analytics, Microsoft Application Insights, PowerShell, Bash, REST API, Python
2w
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Senior Full Stack Developer
Nashua or New Hampshire
$97k-$165k/yr HybridFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Designs and manufactures advanced defense and aerospace systems.
4+ YOEBachelor's degree in CS or equivalent experience, 4+ years professional software development, full-stack web app delivery, API integration, frontend framework proficiency, SQL schema and query design, Git, and automated testing.
ASP.NET Core, Blazor, MudBlazor, C#, SQL Server, Dapper, FluentValidation, Git, HTML, CSS, JavaScript, TypeScript, CI/CD, Active Directory
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
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
3mo
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AI Engineer
Wakefield, Massachusetts, United States
$110k-$150k/yr OnsiteFull Time
GEI Consultants
GEI Consultants: Provides multi-disciplinary engineering and environmental consulting services.
4+ YOE4+ years software engineering; 1+ year GenAI; LLMs; Python/PySpark/SQL; Azure-focused GenAI; Azure AI APIs; Databricks; TensorFlow/PyTorch; secure, scalable AI; prior in professional services or engineering a plus.
Python, PySpark, R, SQL, Azure, Azure AI Services, Databricks, TensorFlow, PyTorch
2mo
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Senior Sales Engineer (Boston, MA)
Boston or Lexington or Massachusetts
RemoteFull Time
VulnCheck
VulnCheck: Provides real-time vulnerability and exploit intelligence data.
5+ YOE5+ years presales engineering experience in cybersecurity, strong vulnerability management and SOC knowledge, Python scripting, API/JSON experience, familiarity with Go, ability to build SIEM/SOAR/TIP workflows, and mentorship experience. Must be based in Greater Boston.
Python, API, JSON, SIEM, SOAR, TIP, CLI, SDK, Go
1mo
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Senior Software Engineer
Merrimack or Smithfield
OnsiteFull Time
Fidelity Investments
Fidelity Investments: Provides investment management, retirement planning, and brokerage services.
Senior software engineer with RESTful APIs, JavaScript frameworks, databases, SDLC, CI/CD, mentoring, and strong OO design.
JavaScript, Angular, AngularJS, Backbone.js, React.js, CSS3