Grant Matejka

Product-minded software engineer with a Master's in Computer Science

LinkedIn
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About

Product-minded software engineer with experience building and scaling B2B and B2C products across AI, workflow automation, and small business software. Strong full-stack background spanning TypeScript, React, Node.js, Python/FastAPI, distributed systems, and agentic AI systems. Experienced leading cross-functional initiatives from architecture through launch in high-growth startup environments.

Work Experience

Andesite AI

Jul 2024 - Present

Senior Software Engineer

Led roadmap planning, technical architecture, and cross-functional engineering delivery; team delivered 85% of projects on or ahead of schedule. Designed and built the core multi-agent framework using proprietary infrastructure and LangChain, with extensive evaluation suites. Productionized an internal FastAPI proof-of-concept into a scalable platform with auth/authz, async job processing, and generated type-safe API clients. Shipped full-stack product features across React, TypeScript, Python, FastAPI, Postgres, and AWS while mentoring engineers.

Tulip Interfaces

July 2022 - July 2024

Software Engineer

Built, launched, and maintained a core customer-facing no-code workflow editor using TypeScript, Node, React, Redux, and D3, informed by user and A/B testing. Built and maintained a compiler/runtime that compiles a custom AST to JavaScript for execution in a sandboxed WebAssembly environment (QuickJS) in an event-driven RabbitMQ ecosystem. Authored specs and architecture for scheduled workflows while rolling out microservice patterns (dynamic sharding, outbox) and public REST APIs.

iFixit

Nov. 2020 - Jan. 2022

Part Time Software Developer

Maintained a large legacy codebase while helping modernize systems supporting 10+ million MAU. Delivered full-stack features across an OOP-heavy PHP backend and JS/React/Next.js frontend. Worked in an agile hybrid team with strong QA and code review practices.

The Parable Group

Jan 2020 - Dec. 2020

Part Time Software Developer

Built full-stack SPAs using C#, ASP.NET Core 3, Blazor, and Azure. Independently took a product offering from concept to prototype to launch, including Azure CI/CD.

Education

California Polytechnic State University, San Luis Obispo

2021 - 2022
Master's Degree in Computer Science (with Distinction)

California Polytechnic State University, San Luis Obispo

2017 - 2021
Bachelor's Degree in Software Engineering (Summa Cum Laude)

Skills

TypeScript
JavaScript
React
Postgres
Node.js
Full Stack
REST API
Microservices
Distributed Systems
Agentic AI
Python
FastAPI

Projects

Rasm

A Racket to WebAssembly compiler

Master's Thesis
JavaScript
Scheme
WebAssembly

Advent of Code

Fun annual event of various programming challenges

Side Project
Python
Algorithms
Data Structures

Some Readings

Code
Charles Petzold

Walking from braille to assembly; one of the greatest computer programming books ever written

Computers
Engineering
Education

Zero to One
Peter Thiel

Short and sweet collection of lectures challenging the status quo of startups and the industry of innovation

Startups
Engineering
Education

The War of Art
Steven Pressfield

Short and inspiring read for pursuing creative ventures

Philosophy
Creative

Where the Wizards Stay Up Late
Katie Hafner & Matthew Lyon

Engaging historical account of the birth and adoption of the ARPANET

Internet
History
Engineering

The Design of Everyday Things
Don Norman

An all time classic of design and humans' interactions with the world

HCI
Design
Philosphy
Classic