Safety Bolt
Stockholm area, Sweden · est. 2023 · website ↗
Registered as Safety Bolt AB
Safety Bolt is a Swedish deep tech start-up, based in Stockholm, with patented sensor technology and proprietary ML algorithms, validated as best in class across the wind industry, infrastructure and rail. Our third material stress sensor, at TRL5, is validated by Atlas Copco and confidential industry partners, to measure the strain changes in bolts and structures, to reduce maintenance cost and extend life cycles for wind turbines, bridges, tunnels etc., with €b of savings potential.
Filed financials
Filed with a public registryFiled with Bolagsverket. The legal entity, not the group.
| Fiscal year | Revenue | Result | Employees | Cash | Equity | Total assets | Flags |
|---|---|---|---|---|---|---|---|
| FY2025 | under 0.1 MSEK | -2.1 MSEK | 2 | 0.9 MSEK | 0.2 MSEK | 1.1 MSEK | None |
| FY2024 | 1.3 MSEK | -2.0 MSEK | 2 | 2.0 MSEK | 2.4 MSEK | 2.6 MSEK | None |
| FY2023 | under 0.1 MSEK | -0.1 MSEK | - | under 0.1 MSEK | under 0.1 MSEK | 0.1 MSEK | None |
Open roles right now (2)
Open when I last checked, via their Teamtailor careers site.
Other roles right now (3)
Titles that do not read as software.
- Chief Operating Officer (COO)posted
- Founder's Associateposted
- Mechanical Engineerposted
Stack, from their job ads
From Safety Bolt’s own job ads, so only the part it is hiring for.
Registered business activity (SNI)
Filed with a public registryStandard industry classification codes as filed with Bolagsverket.
Everything I could know about Safety Bolt
A blank is a gap in my coverage.
Company health
Filed with a public registry- SurvivalRunway ~5 moLoss-making in its latest filed accounts (FY2025). cash 0.9 MSEK, loss 2.1 MSEK over the year (0.2 MSEK/month), revenue under 0.1 MSEK, revenue growth -100%. Cash divided by that burn is ~5 months of runway. Filed facts, but the burn is the accounting result rather than true cash flow, and a funding round raised since the filing date does not show here yet. This is a year-end figure, and the company has 5 open roles advertised right now. Advertising a job commits to a salary, which a filing this old cannot account for, and money raised since the year end does not appear here.
- Age3 years oldFounded 2023, 3 years ago.
- CapitalPre-seedSelf-reported to the startup directory.
- Distress flagsNo data for this company yet
- GrowthSteadyAverage employees filed with Bolagsverket went from 2 in 2024 to 2 in 2025, effectively unchanged. This is a fiscal-year average from filed accounts, so it lags: it says whether the company has been adding people, not whether a role is open today. Filed revenue FY2023 0 KSEK to FY2025 0 KSEK, across 3 filed years.
What you'd build and work with
Read from their job ads- Building (problem type)Embedded/HardwareEmbedded/Hardware (1): 1 posting classified from title/description keywords, not ML.
- StackFirmware2C++1Embedded1Microcontroller1Node.js1Python1RTOS1SQL1Firmware (2), C++ (1), Embedded (1), Microcontroller (1), Node.js (1), Python (1), RTOS (1), SQL (1), counted over the postings whose text I hold.
- Role shapeNo data for this company yet
- SectorEnergy, climate & industryMapped from the industry tags this company reported to the startup directory (greentech, itsoftware, saas, iot). Self-reported, so it is the company's own claim about its market.
- Engineering reputationRead from what they publishNo data for this company yetCompany websites plus the public GitHub API. Broader discovery via GitHub search would need an API token.
Hiring practicalities
Read from their job ads- Open roles5 open5 roles, sourced from the company's own Teamtailor board.
- Working languageEnglishRead from the words in this company's own live job ads, which is the company stating how it hires rather than me inferring it. Detected across this company's live postings.
Fit and mission
Worked out from facts I hold- Fit (chaos or structure)Chaosfounded 2023 (3 years ago), ~6 employees, Pre-seed stage. Age, size and stage combine into the read.
Companies like this one
Worked out from facts I holdEach shows why. Not a recommendation.
- Also Energy, climate & industry · Also building embedded/hardware · Shares C++, Python · Similar size (under 10) · Same age (3 to 5 years)
- Also Energy, climate & industry · Also building embedded/hardware · Shares Embedded, Python, C++ and 3 more
- Also Energy, climate & industry · Also building embedded/hardware · Shares C++, Python · Similar size (under 10)
- Also Energy, climate & industry · Also building embedded/hardware · Shares C++, Python · Same age (3 to 5 years)
- Also Energy, climate & industry · Also building embedded/hardware · Shares Embedded, C++, Python
- Also Energy, climate & industry · Also building embedded/hardware · Shares C++, Python, SQL and 3 more
Work here?
Nobody has answered yet. Same questions for every company.
Answer for this companyOn the map
Wallingatan 14a, 111 24 Stockholm
Address as filed with Bolagsverket.
Drawn by OpenStreetMap, so it only loads when you ask for it.
Wrong about Safety Bolt?
The address, the headcount, the logo, a role that closed. Tell me which and I will fix it.