SDET with TypeScript and Node.js -Hartford, CT or Wellesley, MA

Senior SDET / Software Development Engineer in Test

Position Overview

We are seeking a hands-on Senior SDET with strong software-development, test-infrastructure, and automation-framework expertise. The ideal candidate will have advanced programming skills in TypeScript and Node.js, experience validating APIs and backend services, and the ability to build reusable testing solutions for conversational, generative, and agentic AI applications.

Strong experience in the healthcare insurance domain is required.

Location and Work Model

• Location: Hartford, CT or Wellesley, MA
• Work model: Hybrid
• In-office requirement: Tuesday, Wednesday, and Thursday

Experience Required

• 5+ years of experience in software development, quality engineering, or SDET roles.
• Strong experience in developer-led test infrastructure and automation-framework development.
• Demonstrated experience designing automation strategies and reusable testing patterns.
• Hands-on experience supporting quality across full-stack applications, APIs, backend services, and distributed systems.
• Prior experience working with healthcare insurance applications and business processes is required.
• Experience testing conversational AI, generative AI, or agentic AI applications is strongly preferred.

Key Responsibilities

• Design, develop, and maintain scalable test infrastructure and custom automation frameworks.
• Build reusable automation components, libraries, utilities, fixtures, test-data solutions, and common validation services.
• Define and implement automation strategies across web applications, APIs, backend services, microservices, and integration layers.
• Develop automated tests using TypeScript and Node.js.
• Create comprehensive functional, regression, integration, API, backend, and end-to-end automated test suites.
• Design testing solutions for conversational AI, generative AI, and agentic AI applications.
• Validate multi-turn conversations, context retention, session persistence, intent recognition, agent workflows, tool calling, function execution, and failure-recovery scenarios.
• Test AI application behavior across expected, unexpected, ambiguous, and edge-case inputs.
• Validate API requests and responses, authentication, payloads, schemas, status codes, business rules, error handling, and downstream integrations.
• Develop mocks, stubs, test fixtures, and service-virtualization solutions for dependent systems.
• Perform debugging, root-cause analysis, log analysis, and troubleshooting of application, test, environment, and integration failures.
• Identify and resolve flaky tests, automation bottlenecks, and framework-maintainability issues.
• Integrate automated tests into CI/CD pipelines and establish appropriate quality gates.
• Collaborate with developers, architects, product owners, business analysts, DevOps engineers, and healthcare-domain stakeholders.
• Translate business requirements and acceptance criteria into maintainable automated test scenarios.
• Participate in automation code reviews, technical design discussions, sprint planning, backlog refinement, and release-quality assessments.

Healthcare Insurance Domain Responsibilities

• Validate end-to-end healthcare insurance workflows involving members, providers, benefits, eligibility, claims, payments, and related integrations.
• Translate healthcare insurance rules and business requirements into automated test scenarios.
• Design automated validations for benefit plans, coverage rules, accumulators, member eligibility, provider information, claims processing, and payment workflows.
• Test data exchanges and integrations between healthcare insurance platforms, APIs, databases, and downstream applications.
• Validate the accuracy and consistency of healthcare information across user interfaces, APIs, backend services, and databases.
• Collaborate with healthcare business and technology teams to identify critical scenarios, dependencies, quality risks, and edge cases.

Required Technical Skills

• Strong programming skills in TypeScript and Node.js.
• Experience building developer-led test infrastructure and custom automation frameworks.
• Strong understanding of software design, object-oriented development, debugging, APIs, and maintainable coding practices.
• Experience testing full-stack systems, APIs, backend services, microservices, and distributed applications.
• Experience developing reusable automation patterns, libraries, utilities, and test services.
• Hands-on experience with modern automation tools such as Playwright, Cypress, Selenium, or comparable technologies.
• Experience with REST API testing and automation.
• Experience with SQL and backend data validation.
• Knowledge of mock services, stubs, fixtures, test-data management, and service virtualization.
• Experience integrating automation suites with CI/CD pipelines.
• Strong analytical, problem-solving, collaboration, and communication skills. 

Required Healthcare Domain Skills

• Strong experience in the healthcare insurance domain.
• Knowledge of member, provider, eligibility, benefits, claims, and payment-processing workflows.
• Experience testing healthcare insurance applications, APIs, integrations, and backend services.
• Understanding of healthcare data, complex insurance business rules, and end-to-end transaction flows.
• Ability to collaborate effectively with healthcare business stakeholders and convert domain requirements into automated test coverage.

Preferred Skills

• Experience testing conversational AI, generative AI, large language model, or agentic AI applications.
• Experience validating prompts, response consistency, context management, agent memory, tool calling, and multi-step task execution.
• Familiarity with healthcare systems and standards such as FACETS, HL7, and X12 EDI.
• Experience with Playwright API testing, network interception, and cross-browser testing.
• Exposure to cloud platforms such as AWS, Microsoft Azure, or Google Cloud.
• Experience with Docker, Kubernetes, or comparable container technologies.
• Experience with Jenkins, GitHub Actions, Azure DevOps, or similar CI/CD platforms.
• Familiarity with application-monitoring and log-analysis tools such as Splunk, Dynatrace, or CloudWatch.

Education

• Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent professional experience.