Available to hire
I’m Thomas Zangari, a software engineer with 9+ years of experience building scalable web apps and cloud-native solutions. I specialize in MERN/MEAN, NATS, RabbitMQ, NestJS, Next.js, Jest, Node.js, Angular, Spring Boot, Java, Python, AWS/GCP, and modern DevOps practices. I recently paused my career to upskill in AI and AI-driven development, exploring LLM engineering, agents, and related tooling to deliver smarter, data-driven software.
I’ve led the transformation of legacy monoliths into modular microservices, implemented federated GraphQL APIs, and built frontends with reusable component libraries and pixel-perfect styling. I enjoy collaborating in remote teams, mentoring engineers, and delivering high-quality software through TDD/BDD, robust CI pipelines, and scalable infrastructure.
Skills
Experience Level
Expert
Expert
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Intermediate
Language
English
Fluent
Work Experience
Senior Software/DevOps Full Stack Developer at CVS Health
January 1, 2022 - December 31, 2024Led full-stack modernization and architecture transformation of the Submit Claims platform, migrating legacy monolithic and microservice architectures into cloud-native solutions. Delivered backend, frontend, and DevOps modernization while emphasizing clean, test-driven development and mentorship across cross-functional teams. Modernized Node.js (Express) and Java (Spring Boot) services into TypeScript/NestJS REST APIs, later evolving to Federated GraphQL (Apollo) for scalability. Redesigned JSON data structures for interoperability and payload efficiency. Implemented TDD/BDD and comprehensive test coverage with Jest/Vitest, JUnit, and Playwright. Modernized Angular (v14+) micro frontends with SCSS, Bootstrap, and Tailwind, ensuring pixel-perfect UI from Figma and accessibility compliance. Rewrote frontends with Redux Toolkit and GraphQL integration for BFF architecture. Designed multi-cloud CI/CD pipelines (GitLab, Jenkins, CircleCI, Harness, ArgoCD). Containerized applications with D
Senior Software / Solutions Developer/Engineer at CVS Health
January 1, 2022 - January 1, 2024Refactored legacy Submit Claims applications into modular, cloud-native services using Node.js (Express), Java (Spring Boot), and TypeScript/NestJS. Migrated backend to Federated GraphQL (Apollo Gateway + subgraphs); redesigned JSON contracts and DTO validation to reduce payloads and improve cross-service interoperability. Built and maintained Angular (v14+) and React micro frontends; integrated Redux Toolkit and GraphQL with BFF patterns; wrote unit/integration/E2E tests; configured CI/CD pipelines; containerized on Docker and deployed to Kubernetes clusters; managed Terraform/IaC for modular cloud infra; monitored distributed systems with Kafka and Splunk; implemented API gateway policies via Apigee and F5. Acted as SME within Agile teams and supported 2-week sprint delivery. Remote (Texas, USA).
Senior Software Systems Analyst – DOE Consultant at IMG-Crown
January 1, 2023 - January 1, 2023Supported full SDLC for DOE web solutions; led migration of legacy PHP applications to PHP 8 (vanilla PHP and Composer-based); configured and maintained development environments on Windows Server and RHEL; upgraded Nexus repositories; developed a Node.js utility to automate Nexus operations; performed database integrations (Oracle, Snowflake); contributed Python/Angular/JavaScript/jQuery frontend components; implemented CI/CD workflows with Jenkins and GitLab runners; deployed solutions in AWS and cloud infrastructure for DOE contracts.
Senior Software /Solutions Developer/Engineer at CVS Health
January 1, 2022 - January 1, 2024Refactored legacy Submit Claims applications from monolithic and microservices architectures into modular, cloud-native services using Node.js (Express), Java (Spring Boot), and TypeScript/NestJS. Designed and implemented REST APIs and migrated to Federated GraphQL (Apollo Gateway + subgraphs), defining schemas, resolvers, and federation strategies. Re-architected backend JSON contracts and DTO validation to reduce payload size and improve cross-service interoperability. Developed Angular (v14+) and React micro frontends with reusable component libraries, implementing pixel-perfect SCSS/Tailwind styles from Figma. Integrated Redux Toolkit and GraphQL queries/mutations with optimized caching in a Backend-for-Frontend (BFF) architecture. Wrote unit/integration/E2E tests (Jest/Vitest, JUnit, Playwright) and enforced CI quality gates. Configured and maintained CI/CD pipelines (GitLab CI, Jenkins, CircleCI, Harness, ArgoCD). Containerized apps with Docker (multi-stage) and deployed to Kuber
Senior Software Systems Analyst at IMG-Crown (Consultant – Department of Energy)
January 1, 2023 - January 1, 2023Supported full SDLC for multiple DOE web solutions, including development, maintenance, debugging, and production support. Led migration of legacy PHP applications to PHP 8 (vanilla PHP and Composer-based). Configured and maintained development environments on Windows Server and RHEL 8. Administered and upgraded Nexus repositories. Developed a custom Node.js utility to automate Nexus operations via REST API, improving repository management. Worked with Oracle, Snowflake, and ETL processes; front-end components built with Python, Angular (2+), JavaScript, and jQuery; desktop libraries using Qt. Implemented and managed CI/CD pipelines with Jenkins and GitLab runners, and deployed infrastructure in AWS.
Education
Qualifications
AWS Developer Associate
April 1, 2023 - January 19, 2026ISTQB Foundation Level
April 1, 2018 - January 19, 2026508 Standards for Web and Introduction to Trusted Tester
September 1, 2022 - January 19, 2026HackerRank Certifications
November 1, 2024 - January 19, 2026AWS Developer Associate
April 1, 2023 - May 13, 2026ISTQB Foundation Level
April 1, 2018 - May 13, 2026Certificate of Completion 508 Standards for Web and Introduction to Trusted Tester Testing Tool
September 1, 2022 - May 13, 2026HackerRank Certifications of Accomplishment: Software Engineer, React(b), Rest Api(i), Angular(i), Problem Solving(b), JavaScript(i), Nodejs(i), SQL(i)
November 1, 2024 - May 13, 2026AWS Developer Associate
April 1, 2023 - April 1, 2023ISTQB Foundation Level
April 1, 2018 - April 1, 2018Certificate of completion 508 standards for web and Introduction to trusted tester testing tool
September 1, 2022 - September 1, 2022HackerRank Certifications of Accomplishment
November 1, 2024 - November 1, 2024AWS (Machine Learning, Solutions Architect, AI Practitioner) - In Progress
January 11, 2030 - May 13, 2026GCP Associate Cloud - In Progress
January 11, 2030 - May 13, 2026Kubernetes CKAD - In Progress
January 11, 2030 - May 13, 2026Docker DCA - In Progress
January 11, 2030 - May 13, 2026Terraform - In Progress
January 11, 2030 - May 13, 2026HackerRank Software Engineer - In Progress
January 11, 2030 - May 13, 2026Industry Experience
Software & Internet, Healthcare, Government, Professional Services, Other
Skills
Experience Level
Expert
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Intermediate
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