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Samuel Maddox

LEAD FULL STACK SOFTWARE ENGINEER​

Lead Full Stack Software Engineer with 8+ years of experience delivering and modernizing business-critical applications for enterprise clients. Trusted to lead teams, modernize legacy systems, and design scalable, cloud-native solutions using Serverless Node.js, React, Angular, Vue, and CI/CD pipelines on AWS and Azure. Strong advocate for code quality, automated testing, and maintainable, reliable architectures.

SKILLS​

  • Languages: JavaScript | TypeScript | HTML | CSS | JSON | YAML
  • Frontend: React | Angular| Vue| TailwindCSS
  • Backend: Node.js | Express.js | RESTful APIs | Serverless Architectures
  • Cloud & DevOps: AWS (Lambda, SAM, S3, API Gateway, CodePipeline, CloudWatch) | Azure (Functions, Static Web Apps, Pipelines) | GitHub Actions
  • Testing & Quality: Jest | Testing Library | ESLint | Prettier | SonarQube
  • Practices: CI/CD | Monorepos | SOLID | TDD | Accessibility (A11Y) | Agile | Scrum, Kanban
  • Tools: Git | GitHub Copilot | TurboRepo | NPM

PROFESSIONAL EXPERIENCE​

Lead Full Stack Software Engineer | Launch by NTT Data | Feb 2020 - Present​

Launch offers agile software development teams that assist organizations in designing, developing, and optimizing digital products and platforms. This service aims to enhance user experience and promote business growth.

Service Outage Reporting | Pacific Gas and Electric (PG&E)​

  • Rebuilt the backup outage API as a robust, serverless Node.js API using AWS SAM, creating a new TypeScript-ready project and aligning it with the primary system.
  • Migrated the primary outage API from CommonJS with manual build/deploy to AWS SAM with ES Modules, preparing for a future incremental TypeScript conversion.
  • Implemented RESTful APIs and optimized local development, build, and deployment workflows, enabling faster iteration and more maintainable services.
  • Tech: Node.js, AWS, SAM, Lambda, Gateway, CodePipeline, CloudWatch, TypeScript, ESBuild, SAM CLI, RESTful APIs, GitHub Copilot

Probe Product Management | Client – Bio-Techne​

  • Led a frontend/backend team (2 junior developers) to build CRUD applications that replaced Excel-based product and pricing management, improving data accuracy and operational efficiency.
  • Migrated partially built apps into a TurboRepo monorepo, implementing shared libraries, code quality checks for PRs, and automated build/deploy.
  • Mentored developers in code organization, testing, and best practices, while documenting monorepo structure for future team onboarding.
  • Tech: Vue, TypeScript, PrimeVue, TailwindCSS, Jest, Testing Library, ESLint, Prettier, TurboRepo, Azure Static Web Apps, Functions, Pipelines, DevOps

New Probe Request | Client – Bio-Techne​

  • Led a cross-functional team (2 developers, 2 UI/UX designers) to develop a dynamic, accessible probe request form, including guided field logic and bulk CSV upload, reducing invalid submissions and saving thousands of hours of manual effort.
  • Defined a design system, broke designs into stories, and mentored developers on code organization, testing, and CI/CD best practices, achieving 90% unit test coverage.
  • Implemented automated pipelines and PR quality checks, ensuring maintainable, scalable code and smooth deployments.
  • Tech: Angular, TypeScript, A11Y guidelines, Jest, Testing Library, ESLint, Prettier, Azure Static Web Apps, Functions, Pipelines, DevOps

Patient Registration | Client – Large Healthcare Provider​

  • Onboarded late in development to resolve critical bugs blocking launch of a patient registration tracking app, ensuring the system could go live on schedule.
  • Refactored existing code to better align with SOLID principles and implemented automated code quality checks, improving maintainability and team workflow.
  • Delivered a stable, fully functional application that digitized patient registration and progress monitoring.
  • Tech: React, Jest, Testing Library, ESLint, Prettier, GitHub

Jump Seat Booking | Client – UPS​

  • Partnered with another developer to modernize a legacy console app into a web application, allowing pilots to book and modify flights while enabling administrators to manage all bookings and user data.
  • Designed and implemented a complex flight table with multi-leg support, refactoring Material UI components and updating API contracts to improve performance for large searches.
  • Translated business requirements into stories, delivering a functional, intuitive interface that improved usability for both pilots and administrators.
  • Tech: Angular, TypeScript, Angular Material, SonarQube, ESLint, Prettier, Azure DevOps

Full Stack Software Engineer | Nationwide | Aug 2017 – Jan 2020​

Hackathon Event Management​

  • Led requirements definition, story breakdown, and front-end development for a web app that enforced team registration, verified participation of members, and digitized judging with automated scoring and tie breaking.
  • Mentored two part-time developers with no web experience in backend architecture, database design, and RESTful APIs, ensuring high-quality delivery.
  • Delivered faster, on-time judging and increased participant engagement with more complete teams, improving executive satisfaction.
  • Tech: React, Node.js, Express.js, MongoDB, AWS (EC2, S3, Route 53, CodePipeline), ESLint, Prettier, Jest, Testing Library, GitFlow

Internal URL Shortening App​

  • Rebuilt legacy SharePoint Framework URL shortening app using MEAN stack (MongoDB, Express.js, AngularJS, Node.js) during company migration to SharePoint 365.
  • Sole developer responsible for full-stack development, UI/UX design, and deployment pipelines on AWS, delivering a modernized, maintainable solution.
  • Implemented link usage analytics for users and admins, improving usability and adoption.
  • Technologies: MongoDB, Express.js, AngularJS, Node.js, AWS (EC2, Route 53, CodePipeline), GitFlow.

EDUCATION & CERTIFICATIONS​

  • B.S. Computer Science and Engineering | The Ohio State University, Columbus, Ohio
  • GitHub Copilot Certified | Feb 2025
  • AWS Certified Solutions Architect Associate | Nov 2019