Who is Jack W. Jensen?
Jack W. Jensen is the Director and founder of Allegro IT ApS — a Danish IT consultancy in Randers NV, company reg. no. (CVR) 34593701. He is an independent senior consultant with 25 years in C#/.NET and system architecture, delivering backend, integrations and business-critical production systems end to end, from architecture and code through to operations.
His core discipline is controlled modernisation: improving systems that are already running, without interrupting daily operation. He works equally as a hands-on engineer and as technical lead for distributed teams — and engages on embedded, employee-like terms as readily as on a defined deliverable.
He speaks Danish and English, works out of Randers, and has led development teams across Denmark, North Macedonia, India, Pakistan and Nepal.
Professional foundation
C#/.NET and system architecture
20+ years with C#, .NET, SQL and system architecture. Full stack, but with the weight in backend, integrations and the systems a business cannot do without.
Payment and fundraising systems
10+ years in payment systems: recurring card-payment runs, MobilePay import and matching, PBS file generation and tax-deduction reporting. Sensitive financial data in a regulated context, where traceability is not something you add afterwards.
International project management
10+ years of technical project management and experience leading remote development teams across cultures and time zones — Denmark, North Macedonia, India, Pakistan and Nepal.
AI in production
Builds and runs LLM-based products in production — not prototypes. Teams Summary discovers meeting transcripts in Microsoft 365 and generates minutes with Anthropic Claude, delivered to email, Slack and Teams.
Experience
Allegro IT ApS — owner and principal consultant (2012–)
Independent C#/.NET consultancy: architecture, modernisation of existing code and cloud hosting, delivered from the first client conversation through to production. Payment and ERP integrations, fundraising platforms and VoIP systems for Danish clients, alongside his own SaaS products. Leads and mentors distributed developers across time zones as an embedded part of the client's team.
SideWalk — project manager (2024–2025)
Delivery coordination and client communication inside the web agency's own team and processes.
Kobborg Consult — developer and team lead (2010–2014)
Business-critical call-centre and fundraising systems in C#/.NET and MS SQL with heavy third-party integration, including an interface that paid out incoming donations automatically via Danske Bank over IBM MQ. Team lead and de facto product owner for a development team in North Macedonia for roughly two and a half years.
Handelsskolen i Randers, now Tradium — IT lecturer (1999–2010)
Teaching IT on the HHX and HG programmes plus adult courses. It is the foundation under a career spent mentoring developers.
Trained as a datamatiker (AP Degree in Computer Science) at Århus Købmandsskole (1996–1997), following a Higher Commercial Examination (HHX) from Handelsskolen i Randers.
Services
Allegro IT ApS offers four services, all grounded in the same experience:
- International project management
- Maintain and modernize software
- AI solutions, development and data conversion
- Professional cloud hosting
Outside work
Jack W. Jensen celebrated his silver wedding anniversary in 2026. He and his wife are foster parents to four children — work that asks for much of what project management asks for: patience, structure, and the ability to meet people where they actually are.
He spent around fifteen years as a pastor in a free church in Randers, and has taken part in voluntary work in several parts of the world: a children's summer school in Ramallah on the West Bank, children's homes in Thailand for girls bought out of slavery, and support projects at the Nakivale refugee settlement in Uganda with Serving The Nations Mission — work Allegro IT continues to support and recommend.
He writes about faith and personal topics on his private site, Jack's Corner.
Find Jack W. Jensen online
- LinkedIn — professional profile and experience
- GitHub — code and projects
- Jack's Corner — personal site
- Contact Allegro IT — contact form, phone and address
