resume.alexander.dk

console.log("Hello! I’m");

AlexanderMatzen

System.out.println("a Full-Stack Software Engineer");

I design, build, break, and ship scalable full-stack systems, from idea to cloud

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Curious, detail-oriented software engineer with a builder mindset. I take high ownership of features from idea to release, build on industry best practices, and want my work to make a real impact, with an eye for both the technical and the user perspective.

2023-

Systematic

Senior Software EngineerAug 2026 - Present

Software EngineerSep 2025 - Aug 2026

Junior Software EngineerSep 2023 - Sep 2025

Copenhagen, DKOn-site

  • Owned features end to end on SitaWare Insight (agentic AI for intelligence), adding satellite imagery processing, data management and AI workflows.
  • Helped modernize SitaWare Headquarters from Windows-based to OS-agnostic and cloud-native, including its Keycloak auth layers and a new security gateway.
  • Served as AI Ambassador for agentic development across the Defence business unit.
  • Built developer and QA tooling and Kubernetes CI/CD; onboarded new engineers.

2020-2023

Customers 1st

Software Developer2020-2023

Odense, DKOn-site

  • Grew with the company from 3 to 14 developers (8 to 32 employees) as the platform scaled from independent shops to nationwide chains like Fri Bikeshop and Nielsens.
  • Developed features and quality improvements across POS, CRM, Inventory and Service Case Management, using Laravel, Angular and AWS.
  • Migrated the core platform from Phalcon to Laravel, and source control from Bitbucket to GitHub with CI/CD in GitHub Actions.
  • Set up CDN and translation management for a high-availability system.

2017-2022

ITmaster

Partner2017-2022

DenmarkRemote

  • Co-owned an IT support and hosting provider for businesses across Jutland.
  • Built a self-service panel for 200+ customers, integrating Multicraft and Plesk.
  • Handled accounting, GDPR compliance and business strategy.

2016-2020

Elgiganten

Support Technician2016-2020

Randers, DKOn-site

  • Advised and supported customers at the Nordics' largest electronics retailer.
  • Handled device setups and internal IT in the warehouse, including building a custom queueing system for the Support division.
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2021-

Unge Programmører

Volunteer Moderator

DenmarkRemote

  • Moderate Denmark's largest virtual community for IT development (10,000+ members).

2023-2025

M.Sc. Eng. in Computer Science and Engineering

Technical University of Denmark - DTU

Kongens Lyngby, DK

  • Master's thesis with Novo Nordisk: Data and Information Mapping in Pharmaceutical Manufacturing.

2020-2023

B.Sc. Eng. in Software Engineering

University of Southern Denmark - SDU

Odense, DK

  • Bachelor's project with Systematic: OSINT Collection and Automation within Battle Management Systems.

2025

Challenges and Potential Improvements for Passkey Adoption

A Literature Review with a User-Centric Perspective

Applied Sciences, MDPICo-authorDOI: 10.3390/app15084414

Tech-agnostic: I pick the tool that fits the problem and ramp up fast on new stacks.

Daily stack
Java, Spring Boot, TypeScript, Angular, Kafka, Kubernetes, Keycloak
Experienced with
C#, Python, PHP, SQL Jakarta EE, Laravel, Node.js, React, Vue, Tailwind PostgreSQL, MySQL, SQLite, DynamoDB, Redis, RabbitMQ Docker, AWS, Linux, Git, GitHub Actions, TeamCity Gradle, pnpm, JUnit, Mockito, Jest, Jasmine, PHPUnit, pytest OpenID Connect, OAuth 2, REST APIs
AI
Claude Code, Codex, MCP, Agentic Workflows, LLM Integration
Practices
TDD, DDD, SOLID, GRASP, Event-Driven Architecture, Agile / Scrum
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