Senior Full-Stack Engineer with Distributed Systems Expertise

Anthony L. Hayes Software Engineer

****.*****@*****.*** +1-408******* San Jose, CA Anthony

SUMMARY

Experienced Full Stack Engineer building scalable web applications across fintech, healthcare, and e-commerce domains. Specialized in modern JavaScript ecosystems, cloud-native architectures, and AI/ML integration for enhanced user experiences.

WORK HISTORY

Software Engineer, DoorDash 11/2018 – Present San Francisco Bay Area

•Architected and developed high-traffic microservices using Node.js, Express, and Python (FastAPI/Django), handling millions of daily food delivery requests with sub-100ms response times and 99.9% uptime SLA.

•Built responsive React applications with TypeScript, Redux Toolkit, and Material-UI, optimizing for mobile- first experiences and achieving 90+ Lighthouse scores across Core Web Vitals.

•Implemented real-time order tracking and driver location updates using WebSocket connections, Redis pub/sub, and Socket.io for seamless customer communication and delivery transparency.

•Implemented comprehensive authentication and authorization systems using OAuth 2.0, JWT tokens, and role-based access control (RBAC), ensuring secure multi-tenant access across customer, driver, and merchant platforms.

•Designed and maintained CI/CD pipelines with Docker, Kubernetes (EKS), and GitHub Actions, enabling zero- downtime deployments across multiple AWS regions with automated rollback capabilities.

•Led infrastructure automation initiatives using Terraform, AWS CDK, and CloudFormation, reducing operational overhead by 0% and improving system reliability through infrastructure-as-code practices.

•Developed payment processing integrations with Stripe and PayPal APIs, implementing secure tokenization, PCI DSS compliance, and fraud detection measures for handling sensitive financial data.

•Built data pipelines using Apache Kafka and AWS Kinesis for real-time analytics, enabling business intelligence dashboards and machine learning model training on delivery patterns.

•Integrated Al-powered recommendation engines and dynamic pricing models into the platform, improving customer engagement by 25% and optimizing delivery routes for efficiency.

•Implemented comprehensive database solutions using PostgreSQL and MongoDB with Redis caching, optimizing query performance and reducing database load by 35%.

•Established robust testing frameworks using Jest, React Testing Library, Cypress, and API testing with Postman/Newman, achieving 90% code coverage and reducing production bugs by 5%.

•Integrated external CRM systems and healthcare/biotech partner APIs for specialized delivery services, implementing HIPAA-compliant data handling and secure API integrations.

•Collaborated with product and design teams to deliver features that increased customer satisfaction scores by 25% and reduced support tickets through improved UX/UI design.

•Implemented comprehensive monitoring and observability using Prometheus, Grafana, and DataDog, reducing mean time to resolution (MTTR) by 50% through proactive alerting.

•Mentored junior engineers and established coding standards using ESLint, Prettier, and Husky, improving code quality and reducing production bugs by 30%.

Software Engineer, eBay 01/2016 – 10/2018 San Jose, CA

•Developed full-stack automation tools for eBay's data center infrastructure using Node.js, Express, and React with Redux, creating self-service interfaces that reduced manual provisioning time by 60% across multiple data centers

•Built Angular 2+ applications with TypeScript and RxJS for complex infrastructure management workflows, implementing real-time monitoring dashboards and automated deployment pipelines

•Implemented Java Spring Boot microservices and RESTful APIs with JWT authentication, integrating with Oracle databases and enterprise systems while maintaining 99.5% uptime SLA

•Designed and optimized database schemas for PostgreSQL and MySQL, improving query performance by 5% through indexing strategies and query optimization techniques

•Established comprehensive CI/CD pipelines using Docker, Jenkins, and automated testing frameworks (Jest, Mocha, Selenium), achieving 85% code coverage and reducing production incidents by 0%

•Collaborated with DevOps teams to architect scalable solutions supporting millions of concurrent users, implementing monitoring with Nagios and custom dashboards for proactive issue resolution Software Engineer, Tata Consultancy Services 10/2014 – 11/2015 Greater Minneapolis-St. Paul Area

•Implemented database design and optimization strategies using Oracle and SQL Server, improving query performance by 30% and ensuring data integrity through proper normalization and ACID compliance.

•Built responsive web interfaces using HTML5, CSS3, and Bootstrap, ensuring cross-browser compatibility and mobile responsiveness for client applications handling sensitive patient and financial data.

•Participated in agile development processes using Scrum methodology, maintaining high code quality standards through peer code reviews and documentation for regulated industries. EDUCATION

BS of Computer Science, Game Design,

University of California, Santa Cruz

2010 – 2014

LICENSES & CERTIFICATIONS

W3Schools CSS

W3Schools.com Issued Dec 2014

W3Schools HTML5

W3Schools.com Issued Dec 2014

PROJECTS

White Shark 06/2014 – Present

Worked in a small team to create a full game built with Unity and C#. Utilized Git for our version control system and emphasized an Agile/SCRUM development methodology. Shipped in June 2014. CMPS 171: Game Design Studio II - White Shark 01/2014 – Present White Shark is an adventure game with procedural crime-solving elements developed for Facebook using Unity. The game features branching conversations where the player's decisions affect the game world. In a Heartbeat 01/2013 – Present

A chain-reaction game created in Unity for Global Game Jam 2013. Orbital 01/2011 – Present

A PC game for Global Game Jam 2011 programmed in C# and XNA .0. Programmer, gameplay design, lead artist. Music-based game where the player illuminates planets to create procedurally-generated music. CMPS 170: Game Design Studio I - Indecisive 09/2013 – 12/2013 Indecisive is a 2D puzzle, sandbox game that takes place on a tile based grid system. The player guides two Al characters by placing different types of tiles, such as floors, walls and bridges, in hopes of helping them escape their unknown world.

Microsoft Sponsored Class 01/2013 – 03/2013

Created a PC game using Unity and a Kinect toolkit. SKILLS

Frontend

React, TypeScript, Angular, Next.js

Cloud & DevOps

AWS, Docker, Kubernetes, CI/CD, Infrastructure as

Code

Game Development

Unity3D, Game Design

Backend

Node.js, Python, Java Spring, DB Design, Caching

AI/ML & Data

Maching Learning, Data Pipelines, Al Integration,

Analytics

Integration & APIs

Payment Processing, CRM Integration, Real-time

Communication

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