JJjeeblejuice.dkJarl Kjærgaard Amtoft

Bachelor of Software Engineering, AAU Copenhagen

Practical software, polished interfaces, and systems that stay maintainable.

I am a Bachelor of Software Engineering from AAU Copenhagen with experience across frontend, backend, and systems development, plus a strong service background that shaped my communication and user focus.

I work comfortably across frontend, backend, and systems development, with a background in customer-facing roles that taught me to care about users, communication, and reliability.

Education
B.Sc. Software Engineering
AAU Copenhagen, 2023 - 2026
Projects
6 semester projects
Plus public GitHub work and side projects
Stack
Frontend, backend, systems
From UI design to database-backed services
Languages
Danish / English / Spanish
Native fluency in Danish and English

Selected work

Things I build and use

Live tools, public repositories, and selected private case studies—from deterministic game systems to self-hosted media and desktop automation.

Academic work

Semester projects and systems work

These projects cover algorithms, UX, full-stack development, database design, compilers, and deployment.

Academic
Trains vs planes
AAU · P1 semester project

Trains vs planes

Decision support system for analysing and optimising train transport against air travel.

Used graph models and Dijkstra's algorithm to compare travel time, revenue, and CO₂ impact in C.

  • Route planning
  • Algorithmic comparison
  • Low-level implementation
CGraphsDijkstraPerformance analysis
Academic
AppleADay
AAU · P2 semester project

AppleADay

Web platform for visualising medical data in a patient-friendly way.

Combined interactive graphs and a 3D avatar to present health information more clearly.

  • Patient-focused UX
  • 3D avatar presentation
  • Data visualisation
Web developmentUXAPI integrationDatabase design3D
Academic
LocalLibrary++
AAU · P2 solo side project

LocalLibrary++

Backend-focused library application inspired by Mozilla's LocalLibrary++ tutorial.

Gained practical experience with REST communication, relational and document databases, and hosting workflows.

  • Tutorial expansion
  • Database hosting
  • Backend workflow
BackendRESTDatabasesHosting
Academic
Cybermatch
AAU · P3 semester project

Cybermatch

Web platform for automating matching between companies and freelance cybersecurity consultants.

Included user management, authentication, database integration, and automation around the matching process.

  • Authentication
  • Automation
  • Full-stack workflow
MVCJWTAPIsDatabase integration
Academic
PseudoMat
AAU · P4 semester project

PseudoMat

Domain-specific language for linear algebra with an interpreter.

Built a small language with matrix and vector operations, including lexical analysis, parsing, ASTs, and runtime execution.

  • DSL design
  • Interpreter implementation
  • Language tooling
Compiler designParsingASTRuntime systems
Academic
Educado
AAU · P5 semester project

Educado

Modernisation work on a larger learning platform inside a Scrum-of-Scrums setup.

Worked on migration to Strapi and PostgreSQL, CI/CD pipelines, technical debt reduction, and maintenance of an existing codebase.

  • Modernisation
  • DevOps workflow
  • Technical debt reduction
ScrumCI/CDStrapiPostgreSQL
Academic
Indoor navigation at AAU campus
AAU · P6 semester project

Indoor navigation at AAU campus

Multi-floor indoor navigation system for Aalborg University campus in Copenhagen.

Combined graph-based building models, A* pathfinding, QR positioning, fuzzy search, and interactive 3D route visualisation in a PWA.

  • Multi-floor navigation
  • 3D visualisation
  • User/admin interfaces
A*PWAThree.jsQR positioningFuzzy search

Timeline

Work experience and education

A mix of service roles, healthcare support, and a software engineering degree that ties the whole portfolio together.

Work

Bartender - Axelhus Bodega

June 2016 - November 2022

Service, cash handling, event coordination, opening and closing responsibility.

  • Customer contact
  • Cash counting
  • Event coordination
  • Reliable service

Varme hænder - Hillerød Hospital

January 2021 - January 2022

Support work in orthopaedic surgery: serving patients, relieving staff, and cleaning surfaces.

  • Service mindset
  • Patience
  • Team support
  • Handling stressful environments

Education

Bachelor of Software Engineering - AAU Copenhagen

2023 - 2026

Coursework in agile software engineering, algorithms, web programming, databases, security, compilers, and systems development.

  • 6 semester projects
  • Frontend, backend, and systems work
  • Modern web technologies

Capabilities

Skills, tools, and languages

A compact summary of the stack and practices I actually used in study and project work.

Languages

TypeScriptJavaScriptPythonC++C#CRust basicsOCaml basicsAssembly / MIPS basics

Web and UI

Next.jsReactViteThree.jsResponsive UIUX designHTMLCSS

Backend and data

FastifyPrismaPostgreSQLSQLiteMongoDBREST APIsOAuthSecure session design

Practices and tools

Git & GitHubDockerVitestPlaywrightTauriCapacitorCI/CDDeterministic simulationLinux automation

The ecosystem

Useful places beyond the portfolio

Personal tools and public collections that can grow independently while still feeling like one site.