About

Marcin Zelent

Copenhagen, Denmark
<my-first-name>@zelent.net
https://www.linkedin.com/in/marcinzelent
https://github.com/marcinzelent

A motivated and resourceful professional with a solid background in technology and a strong interest in innovation and entrepreneurship. Curious about the world and its future, I am always eager to learn, take on new challenges, and continuously grow both personally and professionally.

Experience

Founder
Viridate
Aug 2025 - Present

• Helping companies with the standardization and evaluation of carbon data from suppliers and databases.

Senior Developer
Kraftvaerk
Jun 2023 - Jul 2025, 2 yrs 2 mos

• Design and development of new cloud-based solutions, microservices, REST APIs, integrations, automations, websites, e-commerce platforms, and portals.
• Cloud migrations, lift-and-shift, refactoring and rearchitecting systems into cloud-native applications, serverless functions, containers, splitting monoliths into smaller services.
• Analysis, maintenance, support, and expansion of existing solutions, adapting to changing business requirements, providing high availability and stable operation.
• Providing advice and guidance to clients, researching and designing new ideas, suggesting possible improvements, investigating and solving issues.
• Primarily back-end development with .NET, ASP.NET, C#, Microsoft Azure services, SQL Server, Docker, various CMS platforms and 3rd-party services.
• Setting up cloud services, deployments, creating CI/CD pipelines, and Terraform IaC configurations.
• Code reviews and security audits, suggesting and implementing security mechanisms.
• Some front-end development with React and Vue.js.
• Preparation of technical drawings, diagrams, writing documentation, guides, tutorials.

Developer
Kraftvaerk
May 2022 - June 2023, 1 yr 2 mos

Consultant
Kraftvaerk
May 2021 - May 2022, 1 yr 1 mo

Founder, CTO
ArchitectureQuote
Sep 2018 - Feb 2021, 2 yrs 6 mos

• Built a complete SaaS platform from scratch in under 1 year
• Made strategic technology decisions
• Designed all aspects of the product and the system architecture
• Lead development, managed projects and a team of 5 developers
• Developed the back-end using Node.js, Express, and MongoDB
• Created the front-end with React and Redux
• Wrote multiple automation and data synchronization tools integrating various components
• Set up and maintained cloud-based infrastructure on AWS
• Introduced DevOps practices, created and maintained CI/CD pipelines

Web Developer
Kunde & Co
Oct 2018 - Dec 2019, 1 yr 3 mos

• Developed web applications and landing pages with HTML, CSS, JavaScript, and React
• Created automation scripts using Bash and Python
• Maintained multiple corporate websites
• Developed responsive email templates for newsletter campaigns
• Versioned web banners in different sizes and languages

Webmaster
Kunde & Co
May 2017 - Oct 2018, 1 yr 6 mos

• Managed content on corporate websites using WordPress and Umbraco
• Created HTML5, animated, and static banner advertisements
• Maintained multiple corporate websites
• Prepared website overviews listing pages and modules
• Helped with various image editing tasks in Adobe Photoshop

Customer Service Consultant
Call Center Poland
Aug 2016, 1 mo

• Recalling to customers and providing them with any necessary information if they pass verification
• Using integrated system for finding appointments, and sending documents

Education

Master of Science, Technology Entrepreneurship
DTU - Danmarks Tekniske Universitet
Sep 2025 - Present

Bachelor of Software Development
KEA - Københavns Erhvervsakademi
Feb 2019 - Jun 2020, 1 yr 5 mos

• Databases
• Software testing
• Data science
• Development of large systems
• System integration
• Software design patterns

Academic Proffesional of Computer Science
Zealand - Sjællands Erhvervsakademi
Sep 2016 - Jan 2019, 2yr 5 mos

• Programming
• Software development methodologies
• Databases
• Web services
• Networking
• IT security
• Web applications
• Mobile development

Certifications

AWS Certified Solutions Architect - Associate
Amazon Web Services (AWS)
Nov 2024

Exam AZ-305: Designing Microsoft Azure Infrastructure Solutions
Microsoft
Sep 2023

Skills, technologies, programming languages

• Back-end web development:
  C#, .NET, ASP.NET, JavaScript, TypeScript, Node.js, Express, Sitecore, Umbraco, Optimizely

• Cloud design and development:
  Microsoft Azure, Amazon Web Services (AWS), microservices, serverless, containers, Docker

• System administration/DevOps:
  GNU/Linux, Azure, AWS, Terraform, Jenkins, Git, GitLab, Azure DevOps

• Databases:
  SQL, Microsoft SQL Server, Cosmos DB, MySQL, MongoDB, Entity Framework

• Scripting:
  Python, Bash

• Testing:
  MSTest, xUnit, Mocha, Selenium, Cypress

• Front-end web development:
  HTML, CSS, JavaScript, TypeScript, React, Next.js, Vue.js

• Desktop software development:
  C#, .NET, UWP, XAML, Go, C

• Mobile development:
  Java, Android

• Content management:
  WordPress, Umbraco, Adobe Experience Manager, Sitecore, Optimizely

• Multimedia editing:
  Adobe Photoshop, Adobe Illustrator, GIMP, Inkscape, Blender, Camtasia, Kdenlive, Audacity

• Methodologies:
  Agile, Scrum, Extreme Programming, Software Design Patterns

Languages

• Polish - Native
• English - Full professional proficiency (C2)
• Danish - Elementary proficiency (B2)
• Italian - Elementary proficiency (A1)

Interests and hobbies

Download PDF version