Era4 develops, owns and operates AI infrastructure across the UK, powered by renewable energy. Converting legacy industrial and energy sites into modern data-centre facilities, Era4 is combining brownfield regeneration opportunities with cleaner, efficient, scalable compute capacity for healthcare, research, finance, enterprise, and public-sector organisations.
Selected candidate needs to be within commuting distance of Chesterfield.
Selected candidate must hold a full UK driving license as on call will be required.
Role Summary:
In this hands-on operational engineering role, you will support the safe, reliable and efficient operation of critical site infrastructure. You will combine infrastructure monitoring, planned preventative maintenance support, contractor supervision, facilities management and operational compliance to help maintain high levels of availability across the site’s electrical, mechanical, cooling and life-safety systems.
Alongside routine engineering duties, you will act as the designated deputy for the Data Centre Facilities Lead during periods of absence. This includes providing operational site cover, coordinating approved contractors, maintaining site oversight and ensuring that technical, operational and safety-related issues are appropriately managed and escalated when required.
Key Responsibilities:
- Support the safe and reliable operation of critical electrical, mechanical, cooling and life-safety infrastructure.
- Carry out routine inspections, housekeeping and authorised maintenance activities across site assets.
- Support planned and reactive maintenance programmes, ensuring activities are completed, recorded and escalated where required.
- Monitor plant performance, alarms and site conditions, identifying and escalating operational risks.
- Coordinate contractors and service providers, ensuring compliance with site access, RAMS and safety procedures.
- Act as deputy to the Data Centre Facilities Lead, providing operational oversight and site support during periods of absence.
- Support incident response, emergency procedures and accurate site record keeping.
- Assist with closed-loop water treatment activities, including dosing, sampling, analysis and system maintenance following training and authorisation.
Essential Experience:
- Engineering, facilities or maintenance experience within a critical, industrial or high-availability environment.
- Working knowledge of electrical, mechanical, cooling or building services infrastructure.
- Experience supporting planned preventative maintenance (PPM) and contractor management activities.
- Understanding of safe systems of work, permits, RAMS and health & safety compliance.
- Ability to monitor plant performance, respond to operational issues and escalate risks appropriately.
- Strong organisational, communication and record-keeping skills.
- Ability to work independently and take ownership of site operations when required.
Why Era4:
You’ll be joining a mission-driven start-up building critical national infrastructure, where operational excellence directly enables growth. This role offers high visibility with leadership, real autonomy, and the chance to shape how a next-generation company operates at scale.
Diversity & Inclusion:
Era4 is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
Skills Required
- Engineering, facilities, or maintenance experience in a critical, industrial, or high-availability environment
- Working knowledge of electrical, mechanical, cooling, or building services infrastructure
- Experience supporting planned preventative maintenance and contractor management activities
- Understanding of safe systems of work, permits, RAMS, and health and safety compliance
- Ability to monitor plant performance, respond to operational issues, and escalate risks appropriately
- Strong organisational, communication, and record-keeping skills
- Ability to work independently and take ownership of site operations when required
What We Do
Carbon3.ai is building the UK’s sovereign AI platform – secure, sustainable, and designed for real-world impact. AI growth demands are creating new challenges and compute power requirements are outpacing supply. At Carbon3.ai, we’re not just providing infrastructure, we’re building the foundations to overcome these challenges. We are an energy business transforming into the UK’s sovereign choice for AI. Vertically integrated from soil to software transforming legacy industrial sites into renewable powered AI data hubs. Designed, owned, and operated by Carbon3.ai, all infrastructure and data processing are located within the UK and fully subject to UK jurisdiction and regulatory oversight. We generate our own off-grid renewable power, providing low-cost, sustainable energy comparable to Nordic levels, making AI workloads both affordable and sustainable. We own 50+ sites across the UK and are rapidly scaling them into AI data centres, enabling high-density, low-latency, sovereign AI deployment at national scale. Whether you're training models, deploying intelligent agents, or building industry-specific solutions, Carbon3.ai accelerates your journey from concept to production. Backed by strategic partnerships with leading brands and robust investment, we’re building the infrastructure to power the UK’s most ambitious AI innovation – ensuring British enterprises can access world-class AI capabilities securely and sustainably.
