03Kick Avenue

Kick Avenue Marketplace Revamp

Rebuilding a live marketplace, from the buy button to the back office.

For: Kick Avenue, marketplace for authentic sneakers and collectibles
Role: Full Stack Engineer, front end lead for the revamp
Period: 2023 → 2025

Illustration redrawn for this portfolio. Not a screenshot, no client data.

80%: of user facing components built by me
2: surfaces on one component system
2: codebases: legacy and revamp, in parallel

Context

Kick Avenue connects buyers and sellers of collectibles, with quality control and legit checks in between. The company rebuilt its entire system for reliability and scale. I led the front end and built about 80% of what users see.

The legacy platform (Lumen, React, Redux) had years of features and almost no documentation. I maintained it and shipped critical fixes while the new system was being built next to it.

On the revamp I owned the front end architecture: a modular component system shared by the public marketplace and the internal CMS, so both stay consistent and new pages are mostly assembly.

Stack

Next.js
TypeScript
Tailwind CSS
Zustand
React Query
Go
Echo
MySQL
Kafka
Docker

What I built

Component system first

A UI library and modular page components that serve both the marketplace and the CMS. It sped up delivery and kept the two surfaces visually consistent.

Guardrails in the linter

I pushed early returns and small functions, moved branching logic out of JSX into custom hooks, and enforced it with lint rules such as a max lines per function limit. Maintainability went up without missing the deadline.

Wallet top up and cash out

Backend endpoints in Go for the Kick Avenue wallet, integrated with a payment gateway, with strict validation and a complete transaction history.

Delivery tracking on the legacy platform

Integrated a third party tracking API, cached responses and cloned tracking info into the internal database so pages stay fast and the provider is not hit on every view.

Close to the infrastructure

Worked inside a microservices setup with Docker, and picked up working exposure to Kubernetes, Terraform and ArgoCD along the way.