Daniel S. Nielsen

Senior Software Developer | Systems · Integrations · Automation · AI

Daniel S. Nielsen.

Available now

Profile

Software developer with 15+ years of experience building the systems a business actually runs on. I have built business systems from scratch: commission calculation, invoicing and finance integration, learning analytics with churn prediction, and my own operations platform. My strength is taking a task all the way from business need to production.

Day to day I work with Laravel, API integrations, event-driven queues and OAuth2, and I build LLM solutions with RAG and AI agents. I use AI myself in development with Claude Code, Codex and Copilot, and responsible AI use and data governance are a fixed part of how I work. Add to that Linux operations, CI/CD and automated testing.

At GoLearn I was technically responsible for internal systems and operations on a learning platform with tens of thousands of users, and for the migration to Eduhouse LMS following the 2023 acquisition, completed with close to zero downtime. I also co-founded CustomerFlow, an AI-driven SaaS product I run as a part-time project, and through Kodesmeden I help companies with custom development, integrations and technical advisory.

I am now looking for a permanent position where I can put down roots and take ownership of the systems. A place where technical quality carries weight, and where what we build lasts.

Experience

Co-founder & Technical Lead

Dec 2025 - Present

CustomerFlow · Part-time project

Co-founder and technically responsible for an AI-driven SaaS product for sales communication, which analyses calls and emails via DISC profiling and generates tailored response suggestions.

  • Responsible for the entire technical architecture: backend, real-time dashboard, AI analysis pipeline and email integration.
  • Built a built-in softphone (WebRTC) with call recording and transcription.
  • Built the solution GDPR compliant and hosted in the EU, with data governance and responsible use of AI built into the architecture.
  • Live with the first pilot users.

Lead Developer

Jun 2022 - Sep 2026

GoLearn.dk · Ballerup

Technically responsible for internal systems and operations on a digital learning platform with tens of thousands of users. The role was eliminated in 2026 when the Danish office was closed and its functions consolidated in Finland following the acquisition. I am available to start immediately.

  • Built an internal toolbox for managing instructors, courses and statistics, with automatic commission calculation based on consumption within categories.
  • Built the finance and invoicing layer in the same system, connecting Maxio (subscription management) and e-conomic (invoicing). After go-live, manual work in the finance function went from a full-time role to roughly one day a week.
  • Extended the platform's learning analytics system for end customers with automatic user provisioning and churn prediction.
  • Technically responsible for the migration to Eduhouse LMS following the acquisition in 2023, carried out with close to zero downtime via gradual rollout and parallel operation.
  • Designed data mapping between two data models and built custom migration scripts so that data from two systems could be merged without loss.
  • Coordinated across the two teams and kept day-to-day operations running throughout the entire transition.
  • Responsible for server operations, Linux administration, CI/CD and automated testing.

Full Stack Developer

May 2021 - Jun 2022

GoLearn.dk · Ballerup

Backend and frontend development on GoLearn's digital learning platform.

  • Developed features across the stack on a platform with many users.
  • Built API integrations and technical analysis tools.

Independent Developer & Technical Advisor

Apr 2021 - Present

Kodesmeden · Side business · Dianalund

Independent developer and technical advisor. Helps companies with custom development, integrations, automation and server setup.

  • Custom development and technical advisory for clients ranging from entrepreneurs to IT suppliers and consultancies.
  • Integrations with accounting systems, CRM and PIM.
  • Built my own operations platform combining bookkeeping integration between Stripe and Dinero, licence management for my own plugins, server and application management, monitoring and backups.
  • Develops own products under Signocore (WordPress plugins and dev tools).

WordPress Developer

Feb 2021 - Apr 2021

Peytz & Co

Shorter engagement involving custom WordPress development for an agency.

  • Custom adaptations and maintenance of WordPress solutions for the agency's clients.

Lead Developer

Jun 2018 - Jan 2021

Waimea Digital · Hellerup

Promoted to technical lead with responsibility for code quality and technical direction in the development team.

  • Mentored 3-5 junior developers through pair programming and on-the-job training, helping them progress from junior towards independence.
  • Introduced shared standards and best practices for the team's code quality.
  • Responsible for the architecture and development of client solutions in PHP and WordPress with API integrations.

PHP Developer

Dec 2016 - Jun 2018

Waimea Digital · Hellerup

Backend development in PHP for a digital agency.

  • Built tailor-made WordPress and PHP solutions for business customers.

Full Stack Developer

Jun 2013 - Sep 2016

OnlinePlus

Development of websites, intranet systems and integrations with accounting systems for business customers.

  • Full-stack development from frontend to backend, including integrations with accounting systems.

Freelance Web Developer

Jan 2010 - May 2013

Various clients · Freelance

WordPress websites and smaller web solutions for local businesses.

Education

Web Integrator

Jan 2011 - Sep 2012

Syddansk Erhvervsskole · Web development

Completed with the top grade of 12 throughout the entire programme - from the foundation programme to the main programme and the final journeyman's project.

Projects

CustomerFlow

AI-driven SaaS for sales teams that analyses calls and emails via DISC profiling and suggests tailored responses. Built-in softphone (WebRTC) with recording and transcription, a real-time dashboard and an LLM analysis pipeline. GDPR compliant and hosted in the EU.

LaravelFilamentAI / LLMTelnyx WebRTCReverbStripe

HoldTurnering

Free platform for Danish table tennis clubs that gathers matches, standings and statistics in one place with automatic synchronisation. Used by 336+ clubs with 1,400+ teams and 4,600+ players, and sends match reminders via email and SMS.

LaravelMySQLAPI integrationSMS & email

DNSinfo

Free Danish toolbox for DNS, email and domains with 12+ tools (DNS lookup, Whois, SPF, DMARC, blacklist, BIMI and SSL/TLS) as well as DNSinfo Monitor for automatic domain monitoring.

LaravelDNSAPIMonitoring

Signocore

Platform for WordPress plugins and developer tools with a focus on performance, technical SEO and automation. Signocore SEO combines schema markup, IndexNow integration and AI-based content analysis in a single plugin.

WordPressPHPAISEO

References

Rasmus Winkel

COO · GoLearn

Martin Birch Laursen

Managing Director · GoLearn