Software Engineer
Axle Energy
Company Overview
Axle Energy Ltd
London, United Kingdom
2023
Approximately 50 employees in London, United Kingdom (source: axle.energy)
What They Do
Axle Energy is focused on building the infrastructure for a decarbonised energy system by developing advanced energy flexibility software that connects distributed energy resources such as EV chargers, home batteries, solar systems, and heat pumps in customers' homes (source: axle.energy). Their platform enables households and asset owners to participate in electricity flexibility and grid services markets, which were traditionally accessible mainly to larger energy users, thereby democratizing access to these markets (source: welcometothejungle.com). Axle’s software offers multiple operating modes, including one that pays customers £1 per kWh exported when the grid requires support, and a fully optimized mode that uses tariff data and usage patterns to minimize energy bills by intelligently managing battery charging and exporting (source: youtube.com). The company supports popular hardware brands such as Fox, Give Energy, Sig Energy, Solax, and Solace, ensuring broad compatibility without requiring customers to change their energy suppliers (source: youtube.com). Currently focused on the UK market, Axle Energy is actively expanding into other European countries, leveraging lessons learned from its UK operations to scale its platform internationally (source: youtube.com).
Projects & Track Record
Axle Energy has demonstrated significant impact through its activation of over 2,000 home batteries on 1 December during a critical grid event, helping to keep fossil fuels off the grid and returning more than £26,000 to battery owners (source: axle.energy). This event, described as the "grid's hour of need," involved linking these batteries to flexibility markets including the Dynamic Flexibility Service (DFS), showcasing Axle’s ability to mobilize distributed energy resources at scale (source: axle.energy). The company’s platform currently connects over 15,000 flexible assets, reflecting rapid growth and adoption of its technology (source: welcometothejungle.com). Axle is actively preparing to open projects across various European countries throughout the year, using its UK experience as a foundation for broader continental expansion (source: youtube.com).
Recent Developments
In August 2024, Axle Energy successfully closed a $9 million seed funding round to fuel its European growth ambitions, following an earlier $1.6 million seed round in June 2023 (source: welcometothejungle.com). The company has been actively hiring in London across multiple functions including engineering, commercial, customer support, and people operations, signaling a strong growth trajectory and scaling efforts (source: accel.com). In early 2026, job postings highlighted the need to build a repeatable commercial motion to expand customer adoption and commercialize flexibility at scale (source: accel.com). Additionally, salary guidance for software engineering roles ranged from £60k to £120k with equity options, reflecting competitive compensation in a hybrid work environment (source: climatetechlist.com).
Working There
Axle Energy offers a dynamic startup environment headquartered in London, with roles spanning engineering, commercial, operations, customer support, and people functions (source: axle.energy). The company emphasizes a mission-driven culture focused on building infrastructure for the decarbonised energy system, with software designed to significantly reduce CO2 emissions and energy costs (source: axle.energy). Employees benefit from a fast-paced atmosphere that prioritizes rapid product shipping and scaling a repeatable commercial engine, reflecting the company’s growth stage and climate-tech focus (source: climatetechlist.com). The company’s hiring activity and job descriptions indicate a collaborative culture with opportunities to contribute across multiple early-stage functions within a single city location (source: ashbyhq.com).
Last updated on May 20, 2026 | Report an issue
Job Description
At Axle Energy, we're building the infrastructure that will underpin the decarbonised energy system. Our software moves energy usage to times when electricity is cheap and green, by controlling vehicle charging, heating systems, and home batteries. We control hundreds of thousands of energy assets.
We're building in a legacy industry and moving gigawatt-hours of electrons in the real world, but we operate at lightning speed, and we're growing the team to meet customer demand.
We're proud to be supported by world-leading investors, including Accel.
Read more about what we're building here.
About the role
Software Engineers at Axle build the core infrastructure for connecting to distributed energy devices, orchestrating them, and allowing them to participate in electricity markets.
This is a generalist Software Engineering role, encompassing product-engineering, devops, and data engineering. We encourage engineers to own as much of the problem-space as they can: you'll spend time talking to clients, getting feedback from users, and working closely with market operators.
At Axle, we work in a deliberately flat structure. That means fewer layers, faster decisions, and more ownership for everyone.
Software engineering at Axle looks like
- Forming a deep understanding of the domain & the business, so you have enough context to execute independently at speed
- Focusing on outcomes, not process, and taking ownership for the end product you ship into the world
- Managing your own time and those of others to adapt to changing scope and deadlines, delivering 80% of the value in 20% of the time
Tech stack
🐍 We build in Python + React for the frontend
🐋 Everything we build lives in Docker, for minimal cross-platform faff and maximal reproducibility.
🤖 Unlimited Claude Code tokens - we are aggressive users and explorers of AI, and encourage everybody to reconsider their workflows regularly
☁️ We deploy on GCP
What's in it for you
A meaningful slice of equity in Axle, alongside a competitive salary, with total compensation ranging from £75k-£200k (base salary + equity).
We operate with a deliberately flat structure and aim to keep pay equitable across the company, with a 1:1 median ratio between founder and team compensation.
Enhanced parental leave to support you through life's meaningful moments.
Bi-annual retreats to strengthen team connection & shared purpose.
Hybrid working - We have a dog-friendly office around Farringdon. To maximize collaboration, we ask that you spend 2-3 days a week in the office.
The opportunity to directly shape the future of energy markets and accelerate the transition to a low-carbon world.
We are extremely keen to build a diverse company, and we're particularly eager to hear from candidates who don't fit the traditional role stereotypes. If you're motivated by our mission, please do reach out, even if you feel you might not 'check all the boxes'.
Interview process
- Initial interview
- Take-home exercise
- Final interview (in-person)
- Offer, references, and welcome to the team!
Compensation Range: £75K - £200K
Apply now
Job expired?Please let Axle Energy know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
Apply now
Job expired?Please let Axle Energy know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
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About the role
July 9, 2026
July 9, 2026
Full time
Hybrid
Company
GBP 75k–200k yearly
- London, United Kingdom
Generalist Software Engineering role
UTC+01:00
