About
// Biography
Engineer. Builder. Systems + AI.
Hi, I’m Andy Decker — a software engineer focused on building reliable, scalable systems that make complex things feel simple. I work full-stack across areas like payments, bridging, and distributed infrastructure, with a strong emphasis on testing, observability, and clear documentation to improve both speed and confidence in what I ship.
I’ve been writing code for years, driven by curiosity as much as craft, and I’m especially interested in distributed systems and how they behave in the real world. Outside of work, I explore AI through personal projects, using them to experiment with agent workflows and practical automation. I care deeply about building thoughtful, well-designed technology that’s secure, efficient, and genuinely useful.
// Experience
Where I've worked
Software Engineer — Polygon Labs
2023 — Present
I work on full-stack systems supporting payments, bridging, and staking infrastructure, with a strong focus on reliability and performance. My work involves improving system confidence through robust testing practices, better observability, and clear internal documentation. I collaborate closely with cross-functional teams to ship features efficiently while maintaining high standards for scalability and developer experience.
Backend Engineer — Fintech Startup
2021 — 2023
I designed and developed backend services for transaction processing and account systems, helping scale the platform as usage grew. A key part of my role was improving API reliability and reducing latency across critical services. I also introduced structured logging and monitoring practices, which significantly improved debugging and incident response, while working closely with product teams to deliver secure and user-focused features.
Full-Stack Developer — Independent / Contract
2019 — 2021
I built and deployed custom web applications for a range of clients, primarily in e-commerce and SaaS. My work included developing tailored admin dashboards and internal tools that streamlined business operations. I handled projects end-to-end, from initial requirements through to deployment, with a focus on writing maintainable code, optimizing performance, and delivering responsive user experiences.
Junior Developer — Digital Agency
2018 — 2019
I contributed to the development of client websites and web applications, focusing on implementing UI components and integrating backend APIs. During this time, I gained experience debugging issues, improving performance, and working within a collaborative team environment. This role helped build a strong foundation in practical software development and modern web technologies.
// Education
My studies
BSc Computer Science
2015 — 2018
University of Manchester
Foundations in Software Engineering
2012 — 2015
Self-directed learning & online coursework
// Tools & Skills
What I know and use in my day to day work
Tools
Go
Python
TypeScript
SQL
AWS
Docker
PostgreSQL
Skills
Distributed Systems
REST/gRPC APIs
Scalability
Unit/integration/E2E testing
Ethereum, EVM, smart contracts
Code reviews, documentation