Senior Full Stack Engineer

Brooksource

Fortune 50 Health Insurance Client

Position Overview

Our 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 Responsibilities

• End-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 Qualifications

Education

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

Professional Experience

• 5+ 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 Skills

• Strong 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 Qualifications

• Experience 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 For

The 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.