36 api test engineer jobs at 27 companies in Gardner, MA
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Software Test Engineer
Cambridge, Massachusetts, United States
$115k-$182k/yr HybridFull Time
4+ YOE4+ years testing real-time distributed client-server applications; experience with C#/.NET, Visual Studio, Azure DevOps, GitHub, Microsoft Windows, API/web/mobile testing, networking tools (Wireshark, TCP/IP, DNS, DHCP), BDD/Gherkin, SAFe; Bachelor’s required, Master’s preferred.
C#, .NET, Microsoft Visual Studio, Microsoft Azure DevOps Service, Microsoft GitHub, Microsoft Windows, Gherkin, BDD, Wireshark, TCP/IP, WLAN, DNS, DHCP, API
2mo
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Senior Test Manager (Performance Testing, Salesforce & Integrations)
Acton or San Diego
$154k-$231k/yr HybridFull Time
10+ YOE10+ years in software testing and quality engineering with enterprise performance testing leadership; deep Salesforce and MuleSoft integration testing experience; hands-on JMeter, K6, LoadRunner, API testing, CI/CD integration, observability and telemetry analysis; strong communication and people leadership.
Salesforce, MuleSoft, JMeter, K6, LoadRunner, Karate, Postman, RestAssured, Playwright, Jenkins, Copado, Azure DevOps, Dynatrace, Splunk, Datadog, Grafana, AppDynamics
3d
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Senior Test Infrastructure Architect
Westford or Andover or Quincy or United States or India
$137k-$261k/yr HybridFull Time
6+ YOEBachelor’s or master’s degree or equivalent experience; typically 6–10 years in infrastructure architecture or related fields. Requires Linux, networking, virtualization, automation, and lab infrastructure expertise.
Linux, Python, Bash, Ansible, NetBox, OpenStack, VMware, KVM, Docker, Jenkins, GitHub, GitHub Copilot, Robot Framework, Jira, Confluence, Ethernet, VLAN, DNS, DHCP, APIs
3d
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Senior Test Infrastructure Architect
Westford or Andover or Quincy or India
$137k-$261k/yr HybridFull Time
6+ YOEBachelor's or master's degree or equivalent experience; typically 6–10 years in infrastructure architecture or related fields. Requires Linux, networking, virtualization, automation, troubleshooting, and technical leadership expertise.
Linux, Python, Bash, Ansible, APIs, NetBox, OpenStack, VMware, KVM, Docker, Jenkins, GitHub, GitHub Copilot, Robot Framework, Jira, Confluence, DNS, DHCP, VLANs
1w
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Senior Software Engineer
Merrimack, New Hampshire, United States
OnsiteFull Time
8+ YOEBachelor’s degree and 8+ years of software development experience, including 5+ years with .NET and Angular. Requires AI-assisted development, full-stack engineering, cloud, APIs, testing, and Agile experience.
.NET Core, C#, ASP.NET MVC, Web API, NHibernate, Oracle, Angular, HTML5, CSS3, TypeScript, OAuth, JWT, AWS, LLM, NLP, Git, xUnit, NUnit, Jasmine, Docker, Kubernetes, GitHub Copilot, Cursor, Claude Code
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Principal Software Engineer
Wilmington, Massachusetts, United States
$144k-$216k/yr OnsiteFull Time
8+ YOE3+ MgmtBachelor's degree or equivalent,8+ years quality engineering experience,3+ years technical leadership,proficiency in test automation,CI/CD,API testing,Agile.
Java, Python, C#, JavaScript, Selenium, Cypress, Playwright, Appium, RestAssured, MS Copilot, Jenkins, GitHub Actions, Azure DevOps, JMeter, Gatling, k6, Docker, Kubernetes, AWS, Azure
1mo
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Senior Full Stack Developer
Nashua or New Hampshire
$97k-$165k/yr HybridFull Time
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
2mo
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Software Engineer, Agentic AI
Somerville or Germany or Hungary or Singapore or Israel
$100k-$150k/yr HybridFull Time
3+ YOE3+ years software engineering experience; strong TypeScript proficiency; experience integrating LLM APIs (Anthropic, OpenAI); familiarity with agentic patterns, RESTful API design, and testing/debugging practices.
TypeScript, ReactJS, LLM APIs, Anthropic, OpenAI, RESTful
1mo
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Software Engineer: Web Developer
Cambridge, Massachusetts, United States
$110k/yr OnsiteFull Time
Bachelor's degree in CS or related; strong HTML, CSS, JavaScript; experience with Vue, React or Angular; CMS knowledge (WordPress/Joomla); UI/UX and graphic design skills; REST API development; Agile and test-driven practices.
HTML, CSS, JavaScript, Vue, React, Angular, WordPress, Joomla, REST API, CI/CD, git, GitHub, GitLab, Jenkins
1d
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Principal Backend Engineer
Cambridge, Massachusetts, United States
$188k-$259k/yr OnsiteFull Time
8+ YOERequires 8+ years of backend engineering experience, a bachelor's degree or equivalent, expertise in backend languages and frameworks, distributed systems, APIs, databases, cloud platforms, containers, testing, CI/CD, and observability.
Node.js, TypeScript, Go, Python, SQL, NoSQL, AWS, GCP, Docker, Kubernetes, REST, GraphQL, CI/CD
16h
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Software Engineer III
Waltham, Massachusetts, United States
$112k-$176k/yr HybridFull Time
2+ YOEMaster's in Computer Science with 2+ years of backend software engineering experience, or bachelor's with 4+ years; Java, Node.js, SQL Server or MongoDB, REST APIs, testing, and problem-solving skills required.
Java, Node.js, NestJS, Kafka, SQL Server, MongoDB, RESTful APIs, AWS, GCP, Docker, Kubernetes, ECS
3d
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Sr. Software Engineer, Enterprise AI Enablement Engineer
Cambridge or United States
$146k-$234k/yr HybridFull Time
5+ YOEBachelor’s degree or equivalent experience and 5+ years in software, data, or computational engineering, including 2+ years with ML, LLM, or agentic AI. Requires Python, application development, APIs, cloud, testing, CI/CD, and containers.
Python, TypeScript, JavaScript, PostgreSQL, Redshift, Athena, AWS, CI/CD
4w
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Principal Software Engineer/Developer
Merrimack, New Hampshire, United States
OnsiteFull Time
3+ YOEDesign, develop, test, and maintain enterprise Java/Spring Boot applications and APIs; experience with cloud, CI/CD, observability, and mentoring; Bachelor's or Master's in related field with relevant experience.
Java, Spring Boot, Angular, Node JS, JIRA, SQL, NoSQL, Snowflake, CloudFormation, Jenkins, Shell Scripting, Datadog, Splunk, Git, uDeploy, Sonar, RESTful web services
1mo
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Java Backend Engineer - Onsite/Hybrid
Merrimack, New Hampshire, United States
$66/hr HybridFull Time
10+ YOEBachelor's degree or equivalent in technology, 10+ years Java experience, 6+ years Spring, 5+ years cloud technologies, and experience with APIs, microservices, databases, CI/CD, testing, and SRE practices.
Java, Spring, Spring Boot, Microsoft Azure, RabbitMQ, Kafka, Service Bus, Oracle, PostgreSQL, REST API, Jenkins, JUnit, Cucumber, Selenium
3w
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Data Engineering Quality Engineer
Dallas or Merrimack or Jersey City
$69k-$153k/yr OnsiteFull Time
6+ YOE6+ years quality engineering experience; strong SQL, Python, and API testing; ETL/ELT and BI validation; automation and CI/CD experience; Bachelor's degree in computer science or related field.
Playwright, RestAssured, Karate, Cucumber, TestNG, Oracle, PostgreSQL, DB2, SQL, PL/SQL, Python, GitHub, Jenkins, Maven, Docker, SonarQube, AWS, Azure, Google Cloud, Snowflake, Databricks, Apache Spark, Hadoop, Jira
1d
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Senior AI Software Engineer
Etters or Yocumtown or Nashua
OnsiteFull Time
7+ YOEBachelor's degree or equivalent experience; 7+ years of software engineering experience; hands-on LLM or agentic application development; modern programming language, API, integration, testing, CI/CD, security, and technical leadership experience.
Python, C#, Java, SQL, PLM, ERP, MES, Microsoft SharePoint, CI/CD, LLM, RAG
1mo
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Staff Functional QA Engineer
Wilmington, Massachusetts, United States
$125k-$172k/yr HybridFull Time
5+ YOE5+ years in software QA or systems validation with integration and functional testing in distributed systems; bachelor’s in CS or related; proficiency with APIs, simulation/HIL testing, scripting (C#, Python, Bash); valid driver’s license.
C#, Python, Bash, Linux, Ansible, Kubernetes, Kafka, SQL, RabbitMQ
2d
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Software Engineer, Senior
Wilmington, Massachusetts, United States
$152k-$189k/yr OnsiteFull Time
8+ YOERequires 8+ years of software development experience, strong Java, REST APIs, distributed systems, cloud applications, AWS, databases, CI/CD, testing, secure development, AI-assisted tools, and a bachelor's degree or equivalent.
Java, AWS, RxJava, CI/CD, RESTful APIs, NoSQL, AI-assisted engineering tools
3w
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Software Development Engineer III (ADBL192)
Cambridge, Massachusetts, United States
$178k-$194k/yr OnsiteFull Time
2+ YOEMaster's in CS/Engineering/Math plus 2 years (or Bachelor's plus 5 years) experience designing large-scale Java/TypeScript/Node.js distributed systems, mentoring or tech-leading teams, building RESTful APIs, testing, performance tuning, security, and cloud services.
Java, Node.js, TypeScript, RESTful APIs
1mo
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Sr. Staff Software Engineer
Lowell, Massachusetts, United States
$146k-$209k/yr HybridFull Time
10+ YOE10+ years building enterprise Java-based web applications, expertise with cloud-native architectures, AI/LLM integrations, microservices, REST APIs, and strong testing and CI/CD practices.
Java, J2EE, Spring Boot, Spring Framework, Hibernate/JPA, React, JavaScript, HTML5, CSS3, REST APIs, Microservices, SQL, GitHub Copilot, ChatGPT, Cursor, Claude, LangGraph, OpenAI Agents SDK, CrewAI, AutoGen, OpenAI, Anthropic, Google Gemini, Model Context Protocol (MCP), AWS, Microsoft Azure, Google Cloud Platform, Kubernetes, Docker, OpenShift, Terraform, CloudFormation, ARM Templates, GitHub Actions, Jenkins, Azure DevOps, GitLab CI, Datadog, Grafana, Prometheus, Splunk, OpenTelemetry, Bash, Python, PowerShell
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