Sr. Full Stack Software Engineer

Senior Full Stack EngineerBrooksourceFortune 50 Health Insurance ClientPosition OverviewOur client is seeking a Senior Full Stack Engineer to join their digital organization and play a key role in the modernization of critical healthcare applications. This engineer will design, develop, test, and deploy scalable, high-quality web applications across the full technology stack.The team is modernizing legacy systems using a modern cloud-native architecture and technologies including TypeScript, Node.js, Express.js, GraphQL, and Azure Cloud. The ideal candidate is a versatile, hands-on engineer who can independently own the full development lifecycle while also providing technical leadership and helping establish modern engineering practices across the team.This role will support a rewards program that encourages Medicaid and Medicare members to be proactive about their health. The team operates in an Agile/Scrum environment with two-week sprints and participates in PI Planning.The Senior Full Stack Engineer will work closely with product managers, designers, engineers, and other stakeholders and should be a strong communicator who is comfortable speaking up, driving technical discussions, and providing leadership from the front.Key ResponsibilitiesEnd-to-End Application Development: Design, develop, test, and deploy full-stack applications, including accessible front-end experiences, GraphQL APIs, and Node.js-based microservices.Front-End Development: Build responsive, scalable, and accessible user interfaces using TypeScript and modern frameworks such as React, Vue.js, or Lit.Accessibility: Develop WCAG-compliant applications that provide an inclusive experience for users of all abilities.Back-End & Microservices: Design and implement scalable, domain-driven microservices using Node.js and Express.js while applying API-first and cloud-native development principles.GraphQL Development: Design and implement GraphQL schemas and services, optimize queries and APIs, and integrate GraphQL across front-end and back-end systems.Performance & Security: Identify and address application performance issues through techniques such as lazy loading, code splitting, caching, and query complexity analysis. Implement security best practices including OAuth2, JWT, authentication/authorization, and input validation.Test-Driven Development: Apply TDD principles and develop comprehensive unit, integration, and end-to-end tests using tools such as Vitest, Jest, and Playwright.Cloud & DevOps: Deploy and support applications in Azure Cloud, leveraging containerization and modern CI/CD practices. Experience with AWS or GCP is also valuable.Technical Leadership: Lead by example, contribute to architectural and technical decisions, establish development standards, and provide guidance to other engineers with minimal oversight.AI-Assisted Development: Help lead the team's adoption and effective use of AI-assisted engineering tools, including Claude Code and GitHub, to improve developer productivity, code quality, and engineering practices.Cross-Functional Collaboration: Partner with product managers, designers, engineers, and other stakeholders to translate business needs into effective technical solutions.Agile Delivery: Participate in Scrum ceremonies, two-week sprints, PI Planning, technical refinement, and other Agile development activities.System Modernization: Contribute to the ongoing modernization of legacy applications by helping transition systems to modern architectures, technologies, and cloud-native platforms.Documentation: Create and maintain clear technical documentation for APIs, microservices, front-end components, architecture, and development processes.Required QualificationsEducationBachelor's degree in Computer Science, Engineering, Information Technology, or a related field, or equivalent professional experience.Professional Experience5+ years of total software engineering experience, including at least 3 years of hands-on full-stack development experience.3+ years of experience developing front-end applications using modern frameworks such a Typescript, React, Vue.js, Lit, or similar technologies.3+ years of experience developing back-end services and microservices using Node.js.3+ year of professional experience designing and implementing GraphQL APIs.3+ year of experience building and deploying microservices in a production environment.Demonstrated experience applying Test-Driven Development (TDD) and modern software testing practices.Hands-on experience with CI/CD pipelines and tools such as Azure DevOps, Jenkins, or GitHub Actions.Experience working in an Agile/Scrum environment.Technical SkillsStrong proficiency in JavaScript/TypeScript, HTML, and CSS.Strong understanding of modern front-end development and application architecture.Experience with Node.js and Express.js.Strong understanding of GraphQL, including schema design, query optimization, and API integration.Understanding of RESTful APIs and OpenAPI specifications.Experience with microservices architecture and cloud-native application design.Experience with Azure Cloud preferred; experience with AWS or GCP is also acceptable.Familiarity with Docker and Kubernetes or similar containerization technologies.Experience working with both SQL and NoSQL databases, such as PostgreSQL, SQL Server, MongoDB, or DynamoDB.Understanding of front-end performance optimization and accessibility standards, including WCAG 2.2.Knowledge of modern application security practices.Preferred QualificationsExperience working in the healthcare industry, including familiarity with standards and regulations such as HIPAA and FHIR.Experience with Apollo Server, GraphQL Federation, or GraphQL optimization at scale.Experience with application performance monitoring and observability tools such as Dynatrace, Prometheus, or Grafana.Microsoft Azure Developer, AWS Certified Developer, or comparable cloud certification.Experience with micro-frontend architectures or modular design patterns, including Module Federation.Experience with AI-assisted software development tools, particularly Claude Code and GitHub.Experience mentoring engineers or leading technical initiatives.Strong understanding of how distributed systems and modern cloud architectures work together.What We're Looking ForThe successful candidate will be a hands-on senior engineer and technical leader who can operate independently while working collaboratively within a cross-functional Agile team. We are looking for someone who:Takes ownership of problems from concept through production.Is comfortable making technical decisions and explaining the rationale behind them.Communicates clearly with both technical and non-technical stakeholders.Is willing to speak up, challenge ideas constructively, and help move the team forward.Understands how applications, APIs, microservices, databases, and cloud infrastructure work together.Is excited about modernizing legacy technology and adopting new development practices.Can help the team effectively leverage AI-assisted development tools.Balances strong engineering practices with practical business and delivery needs.