# Isaac Oluwayinka

> Software Engineer & Architect. I've shipped production software for over seven years. Today I lead engineering for Lone Star Civil's AI-powered platform on AWS: NestJS, PostgreSQL, document processing and zero-downtime deploys.

I design and build complete systems: cloud architecture, APIs, web platforms and mobile apps.

This site is Ykay Code: https://ykaycode.com

## Pages

- [About](https://ykaycode.com/about): who I am and how I work
- [Hire me](https://ykaycode.com/hire): the roles I fit and what I bring
- [Work](https://ykaycode.com/projects): projects, with what I did on each
- [Résumé](https://ykaycode.com/resume): work history and skills on one page
- [Contact](https://ykaycode.com/contact): how to reach me

## Work

- [Structera](https://ykaycode.com/projects/structera): Construction management software for contractors: projects, crews and estimates in one platform, with AI-powered insights. I did the full stack, the architecture and the deployment.
- [GiftAGoal](https://ykaycode.com/projects/giftagoal): A crowdfunding platform. I built the backend.
- [9jaTrip](https://ykaycode.com/projects/9jatrip): A transport management web app. I built the backend.
- [Lone Star Civil website](https://ykaycode.com/projects/lone-star-civil-website): The official website of Lone Star Civil. I built the whole system, front end and back end.

## Roles

- [Software architecture](https://ykaycode.com/hire/architecture): I take architectural ownership from first sketch to production: the cloud layout, the data model, the deployment pipeline and the written record of why each choice was made.
- [Backend engineering](https://ykaycode.com/hire/backend): NestJS and Node APIs with real authorisation, background processing and observability, plus Laravel and Python where a project calls for them.
- [Full-stack web](https://ykaycode.com/hire/full-stack): React and Next.js front ends with Node or Laravel backends, deployed and monitored by the same person who built them.
- [Mobile apps](https://ykaycode.com/hire/mobile): Native Android with Compose, Room and WorkManager, tested on a real device under Doze rather than only in an emulator, and native iOS apps in Swift with SwiftUI and UIKit.

## Machine-readable

- [Everything on one page](https://ykaycode.com/llms-full.txt): the whole site as Markdown
- [JSON Resume](https://ykaycode.com/resume.json): work history, education and skills
- [vCard](https://ykaycode.com/contact.vcf): name, role and profiles for a contacts app
- [Sitemap](https://ykaycode.com/sitemap.xml)

## Contact

- Email: hello@ykaycode.com