cordTech Hiring Rankings
UK's Fastest Growing Sustainability Companies
The UK's fastest growing Sustainability companies of Summer 2026 that are actively hiring engineers.
#
Company
Open jobs
Headcount
Growth
Calculated based on % headcount growth in the last 12 months.
1
Fuse
London, UK · Energy and UtilitiesSave with the cheapest electricity tariff in the UK
19 jobs
201 - 500
186%
2
StormHarvester
Belfast, UK · Machine Learning and AITHE LEADING PROVIDER OF AI ANALYTICS FOR WASTEWATER UTILITIES
3 jobs
51 - 200
53%
3
Pennon
Exeter, UK · Energy and UtilitiesResponsible, sustainable provision of essential utility services and environmental infrastructure
5 jobs
201 - 500
31%
4
HIVED
London, UK · LogisticsParcel delivery for the 21st century
5 jobs
201 - 500
23%
5
Invinity Energy Systems
Liverpool, UK · Energy and UtilitiesUtility-grade energy storage. Safe, proven, economical vanadium flow batteries.
2 jobs
51 - 200
17%
6
Better Cotton
London, UK · Non for Profit2 jobs
201 - 500
15%
7
Switch2
Shipley, UK · Energy and UtilitiesSmart & Sustainable Heat Network Solutions
5 jobs
51 - 200
14%
8
Zenobe
London, UK · Energy and UtilitiesDelivering clean power and transport solutions through the innovative use of battery storage.
5 jobs
201 - 500
13%
9
Recycleye
London, UK · Machine Learning and AITurning the world’s waste into resource
1 job
51 - 200
11%
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