01
Mathilde Krogh Bertelsen
Director · principal engineer
Mathilde founded the collective in 2018 after seven years at a Copenhagen platform. She sits in on every kickoff and signs every contract.
Folio F.CL.00 · the collective
Six engineers, one long table, Hadsund.
DevFlowCollective was founded in 2018 by Mathilde Krogh Bertelsen, four years into her job at a Copenhagen platform. The collective opened with two desks in a converted warehouse on Østergade. The number of desks has grown; the rules of the table have not.
AtlasF.CL.00
- Founded
- 2018
- Engineers
- 6 + 1 designer
- Office
- Østergade · Hadsund
- Status
- in production
I
A note from the director
Why we run as a collective.
I worked in a Copenhagen platform for seven years before opening this place. The work was fine — the bureaucracy around it was not. I would spend half a sprint negotiating who could do what, and the other half doing the work. By the time I left I had a list of rules taped to the inside of my desk drawer about how a small team should run instead.
DevFlowCollective is what that list became. Six engineers, a designer, a long table in Hadsund. No project managers between us and the client. No sub-team standups about the standup. Every engagement is staffed with the two people best suited to it — by their hands, on the keys, in the morning.
The collective shape matters more than the engineering shape. We share clients across the team in cadence reviews every Friday. Nobody owns a client. Nobody is the bottleneck for a client. When someone takes a holiday — which we encourage and require — another engineer is already up to speed.
— Mathilde Krogh Bertelsen, director
II
Folio F.CL.RO · The roster
Six engineers and one designer.
02
Anders Lindgaard Møller
Lead frontend engineer
Anders runs the collective's frontend practice. He has shipped four of our seven headless commerce builds and reviews every design-system pull request.
03
Sofie Holm Pedersen
Backend lead · DevOps
Sofie owns whether production stays up. She runs incident response, the Friday upgrade pass, and the collective's "two strikes" rule for flaky tests.
04
Kasper Vinther Andersen
Senior fullstack
Kasper is the utility player — equally comfortable in a Postgres EXPLAIN and a TypeScript generic. He runs every engineering review we deliver.
05
Sigrid Bjerregaard
UX engineer · design systems
Sigrid sits on the line between design and code. She maintains the collective's shared tokens and shapes every checkout we ship.
06
Magnus Toft Jensen
Junior engineer
Magnus joined in 2025 from a Computer Science programme at AAU. He pairs with seniors on every sprint and now ships his own features in week two.
III
Folio F.CL.CA · Sprint cadence
What a sprint actually looks like.
A walk through the seven points on the calendar that make up every two-week sprint.
Mon · wk 1
Kickoff
A 90-minute working session with your team. We set sprint goals, agree on the demo target, and identify the three risks.
Tue · wk 1
Architecture
Architecture decisions written down. Data model sketched. Branches created. Deploys configured.
Wed→Thu wk1
Build · phase 1
Heads-down work on the riskiest pieces first. Daily 10-minute standups, async via Slack. Pull requests reviewed within four hours.
Fri · wk 1
Mid-sprint demo
A 30-minute progress demo with your team. Re-scope if anything looks wrong before the second week begins.
Mon→Wed wk2
Build · phase 2
Second-half implementation, testing, polishing. CI thresholds are enforced from this point on.
Thu · wk 2
QA + handover
Manual QA, automated tests green, runbook updated. We rehearse the rollback procedure.
Fri · wk 2
Demo + ship
Final demo, deploy to production (no Friday deploys after 14:00), retrospective with the team, and the brief for next sprint.
IV
Folio F.CL.OF · The office
Østergade 47B. A converted warehouse.
The collective runs from a 110 m² converted warehouse in Hadsund, ten minutes from the marina. Six desks, one whiteboard wall, a long table for working sessions, a kettle that has outlived three customer pivots, and a window that looks across the Mariager Fjord. We meet visitors here on Wednesdays, by appointment, and on Zoom every other day of the week.