> kernel.dev
AVAILABLE FOR SELECT COLLABORATIONS / 2026
I’m Ryan Reyner, a full-stack developer turning complex ideas into fast interfaces and dependable systems.
SINGAPORE, SG / REMOTE WORLDWIDE / UTC+8
RYAN REYNER / FULL-STACK ENGINEER
PRODUCT MINDSET. SYSTEMS THINKING.
● ● ● ryan@kernel: ~/portfolio
$ whoami
> Full-stack developer. Curious by default.
$ cat mission.txt
> Build useful things. Keep the system simple.
$ status
> Ready for your next challenge.
01
ENGINEER / END-TO-END
03
PROJECTS TO EXPLORE
06
STACK DISCIPLINES
∞
CURIOSITY / ALWAYS ON
[ 01 / ABOUT ]
I work where product thinking meets engineering. I like clear requirements, small pull requests, and interfaces that feel effortless. From the first wireframe to the deployment pipeline, I make the pieces work together.
Away from the keyboard: street photography, slow coffee, and finding the simplest route through a complicated problem.
01 / CLARITY BEFORE COMPLEXITY
02 / ACCESSIBILITY IS PART OF QUALITY
03 / MEASURE, THEN OPTIMIZE
04 / LEAVE THE CODE BETTER
[ 02 / STACK ]
The right tool for the problem—across the interface, the API, and the infrastructure.
01
Front-end
React · Next.js · TypeScript. Accessible interfaces, reusable patterns, and responsive systems.
02
Back-end
Node.js · Python · PostgreSQL. REST and GraphQL APIs, authentication flows, and data modeling.
03
DevOps
Docker · GitHub Actions · Linux. CI/CD, cloud deployments, logs, and observability.
04
Tools & languages
Git · VS Code · Figma · Framer · Claude · ChatGPTPlaywright. JavaScript, TypeScript, Python, and SQL.
05
Engineering
Design systems, API architecture, testing, performance profiling, documentation, and code review.
06
Principles in practice
Progressive enhancement, reusable boundaries, and small changes with clear ownership.
[ 03 / EXPERIENCE ]
2023 — NOW
Independent / Product engineer
Partnering with small teams on web products, internal tools, and design systems. Scope, implementation, review, and handoff.
2021 — 2023
Studio practice / Full-stack development
Built front-end patterns, API integrations, and release workflows through collaborative product projects.
2017 — 2021
Computer science / Engineering foundation
Algorithms, databases, distributed systems, and human–computer interaction. Continued learning through hands-on builds.
Credentials & continuous learning
Cloud architecture · secure application design · accessible front-end development
FOCUS / CLOUD · SECURITY · ACCESSIBILITY
[ 04 / PROJECTS ]
Three open-source projects to explore: interfaces, commerce, and developer workflows.
~/builds/cal.com
[ MON TUE WED THU ]
09:00 ▓▓ 10:30
11:00 ▓▓ 14:00
SCHEDULING INFRASTRUCTURE
Cal.com
An open-source scheduling platform: calendars, booking flows, and team availability.
Next.js / TypeScript / Prisma
~/builds/medusa
STORE / API
products → cart → order
[████████] READY
COMPOSABLE COMMERCE
Medusa
A modular commerce platform built around flexible APIs and merchant workflows.
Node.js / TypeScript / PostgreSQL
~/builds/excalidraw
┌──────┐ ┌──────┐
│ IDEA │→ │ SHIP │
└──────┘ └──────┘
COLLABORATIVE CANVAS
Excalidraw
A lightweight sketching canvas with a clear interface and local-first interaction.
React / TypeScript / Canvas
OPEN-SOURCE SPOTLIGHT / CREDIT BELONGS TO THE ORIGINAL MAINTAINERS.
[ 05 / USE-CASES ]
01
Your first product
A focused MVP with clear user flows, a maintainable foundation, and room to learn.
02
A faster experience
Audit the bottlenecks. Improve loading, interaction, accessibility, and the parts users notice.
03
A stronger system
Reusable UI, dependable APIs, and a release pipeline your team can understand.
[ 06 / HOW-IT-WORKS ]
01 / DISCOVER
Define the signal
Align on the goal, constraints, users, and what success should look like.
02 / DEVELOP
Build in the open
Prototype early. Ship small slices. Review working software together.
03 / DELIVER
Deploy with care
Test the important flows, document the system, and hand over a stable release.
[ 07 / FAQ ]
What kinds of projects are a good fit?
Web products, SaaS interfaces, internal tools, and focused front-end or full-stack improvements.
Can you work with our existing team?
Yes. I can collaborate with designers and engineers, follow your conventions, and work through reviewable changes.
How do we scope the work?
Start with the goal, current system, timeline, and constraints. We agree on milestones and deliverables before implementation.
What happens after launch?
The handoff includes documentation and a walkthrough. Ongoing support can be scoped around your team’s needs.
[ 8 / CONTACT ]
Tell me what you’re building, what’s getting in the way, and where you want to go.
Let’s find the useful next step.
Open to product collaborations, focused freelance work, and remote engineering roles.
© 2026 RYAN REYNER / KERNEL.DEV