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That just work

Digital craftsmanship for real-world software

See My Work

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Years of Experience
Satisfied Clients
Complete Projects
Git Commits
TatNav — booking marketplace for tattoo artists
Live

TatNav — booking marketplace for tattoo artists

A two-sided marketplace connecting people with tattoo artists — browse portfolios, check availability, and book appointments, while artists manage their profile, services, and bookings from an owner portal. Built end-to-end: a Next.js web app, a React Native mobile app for iOS and Android, and a NestJS API, with Stripe payments and Keycloak authentication, deployed on a self-managed Kubernetes cluster.

TeamTel — Microsoft Teams voice system builder
Paused

TeamTel — Microsoft Teams voice system builder

Built with my co-founder to simplify creating Microsoft Teams voice systems, with a visual call-flow builder. Paused while other projects take priority, but still on the roadmap to finish.

BookGusto — restaurant landing page
Landing page

BookGusto — restaurant landing page

Built the marketing landing page for BookGusto. The wider restaurant management system it was meant to plug into didn't move past that stage.

FretVault — guitar practice companion
University project

FretVault — guitar practice companion

A university project: a mobile app for guitarists to log gear, tabs, and practice notes. Was meant to open-source it, but never got it fully polished.

💼 My Career Overview

Professional Work Experience
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TatNav went from an idea to a live, full-stack marketplace spanning web, mobile, and infrastructure — a genuinely complete product.

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Founder & Full Stack Developer

🗓️ 2025 - Present

Responsibilities

  • Built TatNav end-to-end: a Next.js web app, a NestJS API, and a React Native mobile app for iOS and Android.
  • Set up Keycloak authentication, Stripe payments, and Cloudflare R2 storage.
  • Deployed and run the platform on a self-managed Kubernetes cluster with GitOps CI/CD.
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Sebastian brought creativity and technical expertise to the team, significantly improving our frontend performance. His work has been invaluable in delivering faster experiences.

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Frontend Developer

🗓️ January 2023

Responsibilities

  • Built the marketing landing page for the BookGusto website.
  • Collaborated closely with UI/UX designers to ensure seamless user experiences.
  • The wider restaurant management system it was meant to plug into didn't move past that stage.
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Sebastian's work on TeamTel's call flow builder showed real problem-solving ability, even with the project on hold.

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Co-founder & Full Stack Developer

🗓️ June 2020 - December 2023 (paused)

Responsibilities

  • Co-founded TeamTel, a platform for building Microsoft Teams voice systems.
  • Built the CallFlow Builder and contributed to product planning and design.
  • Development is currently paused while other projects take priority.
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FretVault was a strong university project — a solid mobile app that showed real product thinking, even if it never made it to open source.

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React Native Developer (University Project)

🗓️ March 2019 - May 2020

Responsibilities

  • Built FretVault, a cross-platform React Native app for guitarists to log gear, tabs, and practice notes.
  • Improved app performance and user experience through code optimization and testing.
  • Intended to open-source the project afterwards, but never got it fully polished.

👨‍💻 My Current TechStack

My Technologies

Figma

Design Tool

TypeScript

JavaScript, but better

React

JavaScript Library

NextJS

React framework

Tailwind

CSS framework

Git

Version control

NodeJS

JavaScript runtime environment

NestJS

Node Framework

💬 Have questions or ideas? Let’s talk! 🚀

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