About Me.

Civil engineering taught me how to reason through a problem before touching a keyboard. That's still how I approach every feature: the code comes after the thinking.

From engineering to code: a passion for solving complex problems.

With a background in civil engineering and project management, my journey into web development was born from a desire to build concrete and meaningful solutions. After completing my studies in Belgium and the United States, I dove into the world of code, perfecting my skills through practical experience and constant technological monitoring.

Today, as a Full Stack developer, I specialize in building well-structured, high-performance applications with a seamless user experience. Whether I'm designing an intuitive frontend interface or a scalable backend architecture, I care about doing it properly: clean code, sensible trade-offs, and room for it to evolve.

Outside of coding, I enjoy sports and adventure. From mountain hiking to basketball, traveling, and exploring new places, I love discovering new things and staying active.

Feel free to contact me or check out my resume!

Killian Gemoets skateboarding.
Killian Gemoets hiking.
Killian Gemoets coding.
My Resume

My Experience.

Sagacify Logo

Full Stack Engineer @ Sagacify

September 2024 - now

  • Multi-Tenant Auth & Permissions: Authentication and permissions across a range of identity stacks (OAuth2, AWS Cognito, Keycloak, Better Auth, Entra ID) for secure multi-tenant architectures, including machine-to-machine flows for backend integrations. End-to-end RBAC and attribute-based (ABAC) permission systems, several built with CASL, enforced identically on frontend and API.

  • Tech Lead & Software Design: Technical lead across several large-scale projects spanning AI, public sector, and leisure/tourism. Responsible for data modeling and database architecture, and for codebase quality, with a consistent hand in product thinking and UX/UI decisions.

  • Lead of Frontend Development: Maintained and modernized Sagacify's internal React boilerplate, the starting point for every new frontend project, overhauling development standards (React Hook Form, TanStack, Tailwind, ShadCN) for performance and scalability. Set up the team's agentic coding configuration (Cursor/Claude: agents, skills, rules, commands) to keep code quality and structure consistent across projects.

  • AI Solutions & Distributed Systems: Multi-assistant AI chatbot platforms with real-time response streaming (Redis Pub/Sub), a JSON-driven dynamic form engine for fast assistant onboarding, and delivery as a standalone web app, an embeddable web component, or a SharePoint SPFx integration depending on the client, alongside scalable asynchronous processing built on AWS SQS, dedicated workers, and Dead Letter Queues (DLQ).

    TypeScript

    React

    Node.js

    Express.js

    Fastify

    PostgreSQL

    Objection.js

    Prisma

    Zod

    Tailwind CSS

    Material UI

    Shadcn UI

    Radix UI

    React Hook Form

    TanStack

    Unit Testing

    Docker

    Redis

    AWS

    Terraform

    Keycloak

    Better Auth

    CASL

    React Email

    Agile Methodologies

    Problem Solving

Embie Logo

Full Stack Developer @ Embie

May 2023 - August 2024

  • Web Development & Advanced Features: Design and development of a major digital platform for a public administration in the Wallonia-Brussels region, replacing a fully paper-based process end to end. E-signatures captured directly on a live PDF preview at the exact clicked position, a config-driven nested form engine (tabs, sections, questions) so a new program is a new configuration rather than new code, a chat system, and CASL permissions scoped by step of a file's lifecycle rather than by role alone, all shipped in an Agile environment.

  • Lead Dev & Product Management: Led the creation of a custom ERP end to end, starting with on-site interviews across multiple roles at the client to understand why off-the-shelf ERPs didn't fit and what a tailored one needed to do. Ran the brainstorming sessions that shaped the wireframes and a detailed specification, guided a designer through the UX/UI mockups, then set up the codebase and kicked off development, with regular client meetings throughout to validate mockups and technical choices and walk through progress.

  • Product Vision: Close collaboration with stakeholders to translate business challenges into high-performance, scalable technical features.

    TypeScript

    Next.js

    Zod

    Tailwind CSS

    Shadcn UI

    Radix UI

    React Hook Form

    TanStack

    tRPC

    Prisma

    PostgreSQL

    GraphQL

    NextAuth.js

    CASL

    mjml

    End to end testing

    Project Management

    Agile Methodologies

    Problem Solving

Twipe Logo

Software Engineer @ Twipe

November 2022 - May 2023

  • Mobile Development & Maintenance: Actively contributed to a high-traffic React Native app (thousands of daily users), ensuring the stability and availability of digital newspapers.

  • Product Evolution: Designed and implemented new features, improved user experience, resolved bugs, and optimized application performance.

  • Internal tools development: Built an internal web tool with Next.js to automate and speed up client onboarding. This tool allows clients to configure their own version of the app (colors, layout, logo, etc.), reducing integration time.

    TypeScript

    React Native

    Redux

    Next.js

    Tailwind CSS

    Agile Methodologies

    Problem Solving

Thomas & Piron Bâtiment Logo

Civil Engineer @ Thomas & Piron Bâtiment

September 2021 - February 2022

  • Technical Coordination: Interface between design and field teams to ensure consistency and fluidity between each project phase.

  • Operational Management: Planning and coordination of trades, including logistical organization to optimize site progress.

  • Project Leadership: Technical and financial monitoring, ensuring quality, safety, as well as strict adherence to deadlines and budget.

    Project Management

    Collaboration

    Problem Solving

My Education.

Amazon Web Services Logo

Amazon Web Services

AWS Certified Solutions Architect - Associate

September 2026

Certification AWS Solutions Architect Associate (SAA-C03).

La Capsule Logo

La Capsule

Web & Mobile Coding Bootcamp

March 2022 - May 2022

Intensive bootcamp in JavaScript, React, Express.js, and MongoDB.

University of South Florida Logo

University of South Florida

Master of Science in Project Management

August 2020 - August 2021

Graduated with Magna Cum Laude.

University of Liege Logo

University of Liege

Master in Civil Engineering

September 2015 - July 2020

Graduated with Magna Cum Laude.

Fun Facts.

Grab an item to learn something about me :)

A backpack
A concert ticket
A basketball
A world map
A laptop
A snowboard
A pizza
Running shoes
A country hat