Craftingmodernsoftwareandscalableinfrastructurethroughcode

Hey! I'm Oliver, a software engineer based in Copenhagen
This is where I share my work, experiences, and a little about who I am behind the code.

About me

A little about who I am, where I'm based, and what keeps me motivated.

Hey, I'm
Oliver Zeymer

Copenhagen, Denmark
24 Years Old
Software Engineer
3+ Years of work experience

I'm a Software Engineer fueled by motivation and passion. If I can't find fun or motivation when working on a project, it's simply not for me.

What began as a fascination for frontend quickly expanded into a sparking curiosity for backend development, databases, DevOps and deployment.

I've always been a fast learner, and that, combined with my eagerness to improve my workflow, means I'm all about quickly picking up new technologies and ways to enhance my skills as a developer and team member, all while having some fun!

Outside of work, I spend a lot of time coding side projects, expanding my home server, and configuring my Arch Linux setup. I also enjoy my other hobbies, such as competitive gaming, listening to music, and watching films and shows.

My main strengths

  • Full-stack product work

    Modern, reactive UI, backend services, databases, and microservices

  • AI-assisted engineering

    AI-driven development, agentic workflows and LLM integrations

  • Infrastructure & performance

    DevOps, CI/CD, monitoring, performance tuning, and scalability

  • Collaborative development

    Agile workflows, code reviews, feature scoping/planning, and feedback

Experience

The roles, teams, and projects that shaped how I build software today.

Lumant

Software Engineer - Full-time

Lumant · Remote

  • Implementing new full-stack features
  • Establishing new workflows and infrastructure
  • Optimizing performance and scalability
  • Setting up unit and E2E tests
  • Improving design and user experience
January 2026 - Present
Leagues.gg

Full-Stack Developer & DevOps - Full-time

Leagues.gg · On-site

  • Frontend lead developer
  • Working together in a development team
  • Implementing full-stack features
  • Task management and prioritization
  • UX/UI Design in Figma
  • DevOps
  • Rebuilding from scratch with a modern stack
September 2023 - January 2026
Octocube Games

Web Developer - Part-time

Octocube Games · On-site

  • Deploying the application to a live Plesk server.
  • Working with the team to improve the application.
  • Optimizing the application for speed and performance.
  • Applying SEO techniques to a web application
  • Working closely with a design team
January 2023 - August 2023
Roskilde Tekniske Skole

Web Developer - Main Course

Roskilde Tekniske Skole · On-site

  • Developing in a team
  • SCRUM methodology
  • Using the newest technologies
  • Setting up full-stack applications from scratch
  • 6 week internship at Octocube Games
January 2022 - March 2023
Roskilde Tekniske Skole

Web Developer - Basic Course

Roskilde Tekniske Skole · On-site

  • Basic principles of programming
  • HTML semantics & structure
  • Implmenting designs to websites
  • Version control with Git
August 2021 - December 2021

Projects

Production apps and passion projects I've helped design, build, and ship.

Landing Page

Lumant

The all-in-one platform for coaches and creators, with courses, communities, newsletters, payments, and landing pages in one place, powered by LUMI, an AI cofounder that builds products and ships funnels for you.

+8
osu! Player Profile

Leagues.gg

Your competitive gaming community. Connect profiles from different games and follow others to build a personalized live updating feed and keep up with everyone's matches and in-game stats.

+8
Anime Browser

Anime Browser

A modern web application that provides a sleek and user friendly alternative to the popular "MyAnimeList". Create profiles, bookmark your favorite shows, and explore every anime with ease and style and advanced sorting.

Hero

Octocube Games

A modern web application that presents the company's portfolio of games and allows users to view details about each game, get in touch with the company and browse the most popular tools made by the community

Technologies

Languages, frameworks, and tools I rely on to build and ship software.

Frontend

Backend

Development

Databases

DevOps

Collaboration

Design & Graphics

Operating Systems

Other