Thermeleon
Chemical Manufacturing · Energy Management
5open roles
2backers · Shift Invest, StartLife
Growinghiring pace, 59 of 100
50+team · employees, estimated range
Overview
Thermeleon is a Dutch clean-tech company that develops the Thermeleon Heat Battery, a day-night heat buffer for greenhouses. The product stores surplus heat during the day and releases it at night, raising the energy efficiency of greenhouse horticulture, and the company hires software engineers, data engineers and analysts, application engineers and marketing interns. The company is headquartered in Rotterdam, Netherlands.
Key facts
As of Nov 13, 2026, Alion lists 5 open roles at Thermeleon. Thermeleon is headquartered in Rotterdam, Netherlands.
- Open roles
- 5Job postings Alion tracks, as of Nov 13, 2026
- Headquarters
- Rotterdam, NetherlandsAlion company profile, updated Nov 13, 2026
- Employees
- 50+Alion company profile, an estimated range
- Technologies in its job postings
- 9Named in its job postings
Funding and backers
Team
51-200
employees, estimated range
Hiring now
5
open roles
Backers
2
Shift Invest, StartLife
Momentum
0/100
no fresh signals
Last sign of life
1 mo ago
a posting or a news item
Tractionpublic signals, read monthly
Web presence
top 24%
of 133.2M domains by links, Common Crawl
Registers and programsofficial lists and records that name the company
| Legal entity | THERMELEON B.V. | its site |
Backed byfrom the funds' portfolios and accelerator catalogs
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Jobs
≈ $59k – $104k per year (Estimated) · In office · Full-Time · Rotterdam
Python
SQL
Apply
≈ $34k – $52k per year (Estimated) · In office · Internship · Rotterdam
Python
NumPy
Apply
≈ $49k – $95k per year (Estimated) · In office · Full-Time · Rotterdam
Apply
≈ $59k – $104k per year (Estimated) · In office · Full-Time · Rotterdam
Snowflake
Databricks
DevOps
Git
Analytics
Azure Data Factory
Apply
Growth
Hiring Momentum
59/100
Growing
Open positions
5
0 opened / 0 closed in 30 days
Median time-to-fill
19 days
faster than 61% of the market
ATS activity
Every ~11 hours
Today
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Data Science
50% ▼
Marketing
25% ▲
Early Careers
25% ▼
Activity Timeline
Added LinkedIn to stack
Sep 2026
Added Figma to stack
Sep 2026
Added Canva to stack
Sep 2026
Tech stack
Technologies named in job postings at Thermeleon over the last 12 months, by layer, with the share of postings for each.
Technologies in use
9
Postings analysed
5
Stack modernity
78/100
Languages
Python
SQL
Frameworks & libraries
NumPy
Databases
Snowflake
Cloud & platforms
Databricks
Figma
Sign in to see how your skills match this stack
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Full Thermeleon tech stack
9 technologies · by team · pay by technology · changes · similar stacks
Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors
Shift InvestVia a fund
StartLifeVia a fund
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
Shared investors
News
'Horticulture dares to think big in major energy challenge'
"Horticulture dares to think big in major energy challenge." (2026, April 21). Greentech. https://www.greentech.nl/news/horticulture-dares-to-think-big-in-major-energy-challenge The energy market is under considerable pressure. Due to geopolitical tension
Read more
Report
Dit zijn de Challenger50: de meest uitdagende ondernemers van Nederland in 2025
Bueters, P. (2025, October 30). Dit zijn de Challenger50: de meest uitdagende ondernemers van Nederland in 2025. MTsprout. https://mtsprout.nl/groei/challenger50-uitdagende-ondernemers-2025 Even voorstellen: dit zijn de Challenger50, de vijftig meest uitd
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Report
Thermeleon - Challenger50 van 2025
Thermeleon - Challenger50 van 2025 https://mtsprout.nl/ranking/challenger50-van-2025/bedrijf/thermeleon Wat: Warmtebatterij voor kassenWie: Jildou de Jong (31)Daagt uit: fossiel energiegebruik in glastuinbouwSinds: 2020Funding: Grants, innovatieleningen e
Read more
Report
De toekomst van De energiezuinige kas
Warmtebatterij van Thermeleon revolutioneert glastuinbouw. (n.d.). Rabo &Co. https://raboenco.rabobank.nl/nl/juli_2025/3118/de-toekomst-van Een wereldprimeur uit Nederland: de eerste passieve warmtebatterij speciaal ontwikkeld voor hightech kassen. Het be
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Report
Thermeleon optimaliseert warmtegebruik in de kas
Thermeleon optimaliseert warmtegebruik in de kas - Rabobank. (n.d.). Rabobank. https://www.rabobank.nl/lokale-bank/artikel/011159594/thermeleon-optimaliseert-warmtegebruik-in-de-kas De glastuinbouw heeft een bijzonder imagoprobleem. 'Je kunt in kassen eno
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Report
Dutch horticulture eyes tech to sustain its market grip
The Netherlands is a global leader in horticulture, ranking as the world's second-largest exporter of agricultural products after the US.Read the full article here: https://www.agtechnavigator.com/Article/2025/07/01/dutch-horticulture-eyes-tech-to-sustain
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Report
GreenTech 2025 Hoogtepunten: Thermeleon's Inzet voor Slimmere en Duurzamere Kassen
Op dinsdag 10 juni presenteerden onze Founder & CEO Jildou de Jong en onze Operations Lead Mohammad Shayesteh, PhD tijdens de Startup Innovator Pitches-sessie. We deelden hoe wij de toekomst van de tuinbouw herdefiniëren met schaalbare en duurzame Warmteb
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Report
Veel interesse voor warmtebatterij tijdens kenniscafé
Schregardus, L. (2025, 15 april). Veel interesse voor warmtebatterij tijdens kenniscafé - greenport aalsmeer. Greenport Aalsmeer. https://greenportaalsmeer.nl/nieuws/veel-interesse-voor-warmtebatterij-tijdens-kenniscaf Op vrijdag 11 april organiseerde Gre
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Report
Nederlandse warmtebatterij koelt en verwarmt kassen én bespaart tot 30 procent energie
Oerlemans, A. (2025, January 31). Nederlandse warmtebatterij koelt en verwarmt kassen én bespaart tot 30 procent energie. MT/Sprouthttps://mtsprout.nl/impact/nederlandse-warmtebatterij-koelt-en-verwarmt-kassen-en-bespaart-tot-30-procent-energie Een Nederl
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Report
Nieuwe projecten met warmtebatterij bij telers
https://www.groentennieuws.nl/article/9698947/nieuwe-projecten-met-warmtebatterij-bij-telers Na jaren succesvol testen gaat de Nederlandse start-up Thermeleon dit jaar zijn eerste warmtebatterijen leveren aan telers van groenten en sierplanten. Jildou de
Read more
Report
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
Rotterdam
Rotterdam
Netherlands
HQ
THERMELEON B.V.
5 open roles 4 posted in 90 days 60% engineering 50-200 est. staff
hires for Data Science, Backend, Marketing
3044 BC Rotterdam
How to cite this page
Alion, "Thermeleon: key facts", as of Nov 13, 2026. https://alion.io/company/thermeleon
These figures are published under a free licence. You may reuse them, including commercially, as long as you credit Alion and link back to this page. CC BY-SA 4.0