Matt Zelenak

Full Stack Engineer

Building scalable, human-centered applications that bridge business goals with seamless user experiences.

ABOUT

As a senior front-end engineer with 10+ years of experience, I build scalable, accessible, high-performance web apps with React, TypeScript, and Next.js. I focus on reusable UI systems, clean developer experience, and accessible design. I take ownership through testing, performance tuning, and attention to detail. I thrive in cross-functional teams, turning complex needs into intuitive interfaces while mentoring others and promoting technical excellence.

Outside of engineering, I build side projects that explore new technologies. I am passionate about clean UI & accessible UX. To stay balanced I study and play music, meditate, lift weights, walk, and hike. I grow my own food, try new coffee beans, and cook healthy meals. I enjoy reading science fiction & biographies, and occasionally write content. In downtime, I enjoy games like The Legend of Zelda: Breath of the Wild.

PROJECTS/WORK

EMPLOYMENT

  • 2013 - 2025

    Probability Consulting

    Full Stack Software Engineer

    As a full-stack engineer at a small Indianapolis-based consulting startup, I designed and delivered end-to-end front-end applications while leading deployment, troubleshooting, and cloud-based DevOps on AWS and Azure. I contributed to mobile application development, ensuring seamless user experiences across platforms, and streamlined workflows for multiple clients. Leveraging modern full-stack practices, I consistently built scalable, maintainable, and high-performing solutions tailored to diverse business needs.

    • JavaScript (ES6+)
    • TypeScript
    • React
    • Next.js
    • Redux
    • TailwindCSS
    • CSS3
    • Design Systems
    • Storybook
    • Vite
    • Jest
    • React Testing Library
    • Cypress
    • Playwright
    • Vitest
    • ESLint
    • Storybook/Testing
    • Github Actions
  • 2016 - 2023

    As a senior front-end full-stack engineer at Salesforce, I led the modernization of enterprise applications with React, TypeScript, and GraphQL while advancing design systems, accessibility, and performance. I championed best practices in testing, CI/CD, and cloud deployment, ensuring reliable, scalable, and high-performing releases across teams. Looking ahead, I bring expertise in serverless architectures, AI-driven development, and edge computing to future-proof front-end engineering at scale.

    • JavaScript (ES6+)
    • TypeScript
    • React
    • Next.js
    • Svelte
    • GraphQL
    • Redux
    • Zustand
    • TailwindCSS
    • CSS3
    • SASS / SCSS
    • Styled Components
    • Design Systems
    • Storybook
    • Webpack
    • Vite
    • Babel
    • jQuery
    • Jest
    • React Testing Library
    • Cypress
    • Playwright
    • Vitest
    • ESLint
    • Storybook/Testing
    • Github Actions
  • 2014 - 2016

    During my time building and maintaining the prediction engine, I designed and deployed full-stack applications using Angular and React on the front end, with a C#/.NET backend powered by SQL Server and REST APIs. I leveraged AWS services including EC2, Lambda, S3, CloudFormation, and API Gateway, integrating machine learning models while implementing CI/CD pipelines, DevOps best practices, and automated testing with Mocha and NUnit. Working in Agile and Scrum environments, I optimized performance, ensured scalability, and delivered reliable, enterprise-grade predictive solutions.

    • AWS
    • CloudFormation
    • EC2
    • S3
    • Lambda
    • API Gateway
    • Angular
    • React
    • Redux
    • JavaScript
    • HTML5
    • CSS3
    • SASS
    • Webpack
    • Babel
    • C#
    • .NET Framework
    • ASP.NET
    • SQL Server
    • REST APIs
    • Unit Testing
    • Mocha
    • NUnit
    • CICD
    • Pipelines
    • DevOps
    • Git
    • GitHub
    • Agile
    • Scrum
    • Continuous Integration
    • Continuous Deployment
    • Microservices
    • Performance Optimization
    • Machine Learning Integration
  • 2012 - 2014

    During my time at the startup, I led the development of client web domains and mobile tools, combining front-end and back-end technologies to deliver fully functional, responsive applications. I produced and managed 4K/UHD media campaigns, handling video editing, motion graphics, and audio mixing to create high-quality visual content. Collaborating closely with clients, I integrated content management, optimized performance, and ensured seamless deployment, consistently delivering innovative, polished digital experiences tailored to diverse business needs.

    • WordPress
    • PHP
    • MySQL
    • HTML5
    • CSS3
    • JavaScript
    • jQuery
    • Photoshop
    • After Effects
    • Premiere Pro
    • Final Cut Pro
    • Avid Media Composer
    • 4K Cameras
    • HD Cameras
    • Lighting Setup
    • Audio Mixing
    • Video Editing
    • Motion Graphics
    • Content Management
    • Video Compression

WRITING

The Benefits of a Thoughtful Design System

The Benefits of a Thoughtful Design System

9/10/2025

# The Benefits of a Thoughtful Design System Investing in a design system backed by clear brand guidelines is an integral step teams can take to improve both user experience and developer productivity. A solid design system and brand guide should

Building for Performance: Essential Tools and Practices

Building for Performance: Essential Tools and Practices

9/9/2025

# Building for Performance: Essential Tools and Practices Performance is no longer just a nice-to-have—it’s the foundation of good user experience, search visibility and success. If you’re not actively tracking and improving these metrics, you coul

From Task Completer to Value Creator: Why Creative Problem Solving Matters Most

From Task Completer to Value Creator: Why Creative Problem Solving Matters Most

9/9/2025

# From Task Completer to Value Creator: Why Creative Problem Solving Matters Most In software engineering, it’s easy to get caught up in closing tickets and finishing tasks. But checking boxes doesn’t always move a business forward. The real differ

How Frontend Engineers Drive Revenue and Profitability

How Frontend Engineers Drive Revenue and Profitability

8/22/2025

# How Frontend Engineers Drive Revenue and Profitability When people think about how companies earn more money, the focus often falls on sales teams, product managers, or executives. But frontend engineers have a direct, measurable impact on revenu