Agency Quality, Freelance Agility
I design and build
Nikolaj is a Copenhagen-based software developer and founder with a background spanning product development, engineering, and design. He has built and led the development of complex web and mobile applications across startups, agencies, and independent projects – often taking ideas from early concept to production.
- High-quality software
- Built fast
- Focus on real-world value
Start a project
A couple of lines is enough – I'll get back to you as soon as possible.
Or write me directly at nikolaj.bech@prozense.com
Clients I've worked with
Services I offer
- 01
Websites
Design and develop modern, responsive websites tailored to your brand. From landing pages to corporate sites, I ensure seamless user experiences, fast performance, and clean code.
ReactNext.jsTailwindHeadless CMS - 02
Web applications
Build scalable web applications with dynamic functionality. I specialize in interactive dashboards, SaaS platforms, and custom tools that streamline workflows and improve user engagement.
ReactNext.jsDatabaseAPIAuthentication - 03
AI & agents
Design and build tool-calling AI agents that plug into your systems and take real action – querying databases, calling APIs, and automating multi-step workflows.
AnthropicOpenAITool CallingMCP - 04
Mobile applications
Cross-platform mobile apps for iOS and Android. Focused on intuitive interfaces, smooth performance, and reliable integration with APIs and backend systems.
React Native - 05
3D tools
Develop interactive 3D tools and visualizations for web and desktop. Ideal for simulations, product configurators, or immersive experiences using the latest 3D frameworks.
WebGLThree.js3D Visualization - 06
SaaS
Build robust Software-as-a-Service platforms that scale with your business. I develop secure, multi-tenant applications with intuitive interfaces, seamless integrations, and cloud-ready architecture for subscription-based services.
Multi-TenantPaymentSubscriptionsSecurity
About me
I'm Nikolaj Bech Andersen, a Copenhagen-based CTO, co-founder, and senior frontend developer. With an MSc in Software Development from ITU Copenhagen and a BEng from DTU, I combine technical depth with hands-on product thinking.
Over nearly a decade running my consultancy Prozense, I've delivered web and mobile applications across industries – from museums and universities to global brands. Today I'm CTO of Ethnote, while previously having led teams and joined startups in video communication and underwater technology. I'm most at home building frontend systems in Next.js and React, but equally comfortable with UX design and 3D applications.
- Based in Copenhagen, Denmark
- Founder of Prozense, a software consultancy running for +8 years
- Software freelancer + CTO & co-founder at Ethnote
- MSc in Software Development from IT University of Copenhagen
- BEng in Process & Innovation from DTU
- Patent holder for a real-time dynamic underwater color correction algorithm
- Core skills: Next.js, React, frontend architecture, and code ownership