MATTHEW CALLIS
Senior Software Engineer / Graphic Designer

CONTACT
Location: Lower Queen Anne, Seattle, Washington
Phone: +1 615-972-6791
Email: matthew.callis@gmail.com
GitHub: https://github.com/MatthewCallis
LinkedIn: https://www.linkedin.com/in/matthewcallis

SUMMARY
Senior Software Engineer with 18+ years of experience building web platforms, customer-facing dashboards, developer tools, and design-heavy product experiences. Deep background in product engineering and design systems, with recent work in AI-assisted development and agentic workflows.

CORE SKILLS
Languages: TypeScript, JavaScript, Ruby, Go, SQL, HTML5, CSS, SCSS
Frontend: React, Next.js, Tailwind CSS, Vite, HTML5 Canvas, SVG, XYFlow, React Flow, Chart.js
Backend: Node.js, Express, Hapi, Ruby on Rails, Sinatra, REST APIs, AWS
Testing and Quality: Cypress, Vitest, GitHub CI/CD, code review, refactoring, technical debt reduction
AI and Agentic Workflows: Cursor, Claude, LangChain, LLM-assisted migrations, agent workflow design
Product and Design: Figma, Adobe Photoshop, Adobe Illustrator, Adobe InDesign, Adobe Premiere Pro

WORK EXPERIENCE

Company: Magnify
Title: Senior Engineer
Dates: June 2023 - June 2026
- Owned major frontend systems for a customer-facing dashboard using TypeScript, React, XYFlow, Chart.js, and AWS-backed integrations.
- Built and iterated on a visual workflow / DSL system for customer success automation, including segments, rules, actions, and non-engineer usability.
- Used Cursor, Claude, and AI-assisted workflows to accelerate UI framework migrations, reduce technical debt, and improve developer throughput.
- Set up agentic workflows with LangChain for end-customer use, balancing automation, reliability, and maintainability.
- Collaborated across product, design, and engineering with distributed teams in the United States, Belfast, Singapore, and India.

Company: Intro
Title: Senior Engineer
Dates: May 2022 - March 2023
- Built and maintained the web experience for the Intro application using TypeScript, Next.js, Tailwind CSS, and Figma-driven product design.
- Reworked inherited frontend architecture to improve maintainability, performance, and product velocity.
- Partnered closely with product and design in an early-stage environment, moving from ambiguous requirements to shipped user-facing features.
- Contributed across application UI, marketing surfaces, and product polish.

Company: Apptentive
Title: Staff Engineer
Dates: August 2013 - February 2022
- Owned targeting logic and customer-facing Web SDK used to deliver segmentation, messaging, and feedback workflows across customer websites.
- Created and maintained a Web SDK that opened a new revenue stream and became a trusted platform for testing new product ideas.
- Migrated legacy CoffeeScript, Backbone, KnockoutJS, and Rails code into modern React, Flux, Redux, and service-oriented architectures.
- Built and maintained Node.js / Hapi microservices and contributed to Go service migrations.
- Improved reliability through deep system ownership, refactoring, automated testing, and long-term maintenance.

EDUCATION

School: Middle Tennessee State University
Degree: BFA, Graphic Design
Dates: August 2004 - May 2009
Focus: typography, multimedia design, web design, screen printing, Asian art history