Go deeper
Ambition here means pushing past the shelf. We back the harder experiment, fund the second attempt, and treat a lost instrument as evidence rather than a verdict.
Measure the ocean
at every depth it reaches
Join a small, stubborn team building the telemetry layer for the deep sea — turning sonar sweeps, drift tracks and thermal profiles from thousands of deployed instruments into one live reading of the water column.
Deepwater Quarterly’s 12 labs to watch
Top five ocean-tech studios of 2026
Featured in Blue Chart, Tide & Table
Principles
One crew
Nobody finishes a survey alone. We publish raw readings before they are tidy, hand off cleanly between watches, and make the next person’s job easier to finish than ours was.
Move on the tide
Weather windows close. We decide with the readings we already have, put the change in the water, then sit down and review it once the instrument is back on deck.
Build for the record
Every measurement outlives the contract that paid for it. We calibrate carefully and document plainly so a crew ten years out can still trust what we left behind.
Life at Fathomline
One word for the work
We build in short cycles and commit out loud. A proposal that survives Tuesday review is usually in the water by the end of the month, and whoever wrote it is the one who reads the data back.
Handover culture
Firmware, optics and the survey crew all sit in one channel. Context gets written down while it is still fresh, so the next watch can pick the work up cold and keep going.
Own the instrument.
Every deployment carries a name. You scope the sensor package, argue the budget, sit through calibration, and stand behind the readings it sends home.
Our range keeps growing
We started at two hundred metres and we are working toward the trench floor. The engineering gets harder as the pressure climbs, and every role here moves that number down.
175+
Crew
175 people across four coastal offices.
$142M
Backing
$142M raised across three rounds.
612
Instruments reporting
612 moorings, floats and profilers sending live data from open water.
Locations
Bergen, Norway
Dublin, Ireland
Helsinki, Finland
Osaka, Japan
Why now?
We are building the subsea data layer — one record that reconciles sonar, drift, salinity and temperature across every instrument we have ever put over the side. With $142M in Series C funding from Meridian Deep and Coldwater Partners, Fathomline is opening survey capacity across the North Atlantic and the Pacific rim. It is a rare window to own a whole subsystem end to end.
Benefits
Exact cover varies by office.
Salary and real equity
Health cover for you and yours
Pension with a matched contribution
Twenty weeks leave, either parent
Two days on site, the rest yours
Thirty-four days off, taken properly
How we hire
First call
Thirty minutes with a recruiter to talk through what you have built, what you want next, and whether the role is honestly a fit.
Team conversation
A longer session with the person you would report to, digging into how you work and what you would own in your first quarter.
Practical exercise
A short, paid problem drawn from a real survey dataset. We are reading your reasoning, not your polish.
Panel
Two or three future colleagues, covering collaboration, disagreement, and what you need in order to do your best work.
Offer
We come back with numbers, cover and a start date, and we walk you through every line of it.
What we’re building
Fathomline replaces the scattered spreadsheets that end every survey with one continuous record of the water column — sonar, drift, salinity and thermal profiles landing on a single timeline that a scientist and a port authority can both read from.
Fathomline
fathomline.io
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