Boring on purpose
We pick the proven option over the clever one. Postgres, plain TypeScript and small releases every weekday.
A1
Maren de WitCo-founder, CEO
Company
We build the foundation. Our customers build the rest.
Tessel Labs is a small company in Rotterdam and Lisbon. We make the software that runs the work between systems, and we try to make it the least exciting part of your week.
Founded 2023Rotterdam
41 people2 offices
Series A$24M raised
01 Why
Why Tessel exists
In 2022 a refund script at our last company ran twice and paid out four hundred thousand euros before anyone noticed. Nobody owned it, nothing traced it, and no person had to say yes. Tessel is the platform we wished we had that morning.
02 Values
Values
How we decide when nobody is watching.
Show the work
Decisions, incidents and roadmaps are written down and shared with the whole company, and with customers where it helps.
People sign
Software can suggest, draft and prepare. Anything that moves money or access waits for a named person.
Leave the door open
Everything you build exports as readable code. If a customer leaves, their workflows go with them and still run.
03 Numbers
41People on the team
14Nationalities
1,900Teams in production
04 Timeline
Timeline
Four years, one block at a time.
2023
Founded
Three people and a whiteboard
Maren de Wit and Joost Verhoeven start Tessel Labs in Rotterdam. The first block is a Postgres source with a typed schema.
2024
Tessel 1.0
The first hundred teams
Public launch with 38 connectors and 7-day traces. Halden moves its month-end close onto Tessel in the autumn.
2025
Series A
Lisbon and agents
A $24M Series A, a second office in Lisbon and the first agent blocks with spend caps. SOC 2 Type II follows in June.
2026
Now
Agents with approvals
Tessel 4.0 ships approvals in Chatline. 1,900 teams now run 2.1 billion runs a month across 12 regions, with ISO 27001 in place.
05 Team
Team
The people who answer the pager.
Everyone at Tessel takes a support shift each month, founders included.
B1
Joost VerhoevenCo-founder, CTO
C1
Inês CarvalhoHead of Design
D1
Daan BakkerRuntime lead
A2
Sofia MarquesTracing lead
B2
Leila HaddadHead of Customer Success
C2
Tomasz NowakSecurity lead
D2
Pieter HendriksHead of Finance
06 Offices
Where we are
Two offices. One time zone, give or take an hour.
Headquarters
Rotterdam
Wilhelminakade 91, 3072 AP Rotterdam, Netherlands
28 people · Runtime, tracing, financeStudio
Lisbon
Rua da Prata 80, 1100-415 Lisboa, Portugal
13 people · Design, canvas, supportBacked by · Series A, March 2025
Harbor Fields Northlight Capital Kiln Partners Meridian Seed
07 Join
We are hiring
Build the boring part with us.
Five open roles in Rotterdam and remote across the EU. Four-day focus weeks, real equity and a team that writes things down.