Fuse Energy UK

Vertically integrated energy: generation, trading, retail

Electrical Engineer

Power Systems EngineeringPosted on Nov 10

Full-timeMadrid, SpainHybrid

About the Job

Requirements

The candidate must have 5 to 10+ years of experience in high-voltage and medium-voltage electrical engineering within power, utilities, distribution, or renewable energy.
The candidate must have hands-on battery energy storage system experience in design, grid compliance, commissioning, or energisation.
The candidate must have deep experience with grid connections in Spain, including substations, protection systems, cable networks, and working with Red Eléctrica and distribution companies.
The candidate must have strong knowledge of Spanish grid access and connection processes and technical requirements for generation and storage.
The candidate must have experience reviewing grid studies, including load flow, short-circuit, protection coordination, and power quality studies.
The candidate must have hands-on high-voltage commissioning, testing, and energisation experience.
The candidate must have experience leading and developing engineers and commissioning teams.
The candidate must be able to challenge EPC and consultant designs with evidence.
The candidate must have strong command of Spanish electrical safety regulations and compliance frameworks.
The candidate must have an Engineering degree (Ingeniero Industrial or Ingeniero Técnico Industrial), professional registration (colegiación), and authority to sign projects.
The candidate must be fluent in Spanish and have professional English proficiency.

Responsibilities

Lead all electrical engineering for the EPC function, from early design through construction, commissioning, and energisation.
Act as the high-voltage and medium-voltage subject matter expert across projects, covering substations, grid connections, transformers, switchgear, protection systems, and cable networks.
Set electrical design standards and ensure they are applied consistently across the portfolio.
Review and approve electrical designs from internal engineers, design partners, and consultants.
Challenge designs to deliver safe, compliant, and cost-effective solutions.
Lead technical review of access and connection permits, connection conditions, and compliance requirements.
Ensure adherence to the Reglamento de Alta Tensión (RD 337/2014 and ITCs), REBT where applicable, REE operating procedures, distributor technical standards, and technical connection requirements for generation and storage.
Manage inspections, OCA verifications, and administrative sign-offs, and close out findings.
Oversee technical records and documentation required for authorisation, commissioning, and handover of connection assets.
Act as the technical interface with REE, distribution companies, and third-party developers sharing connection infrastructure.
Oversee and validate grid studies covering short-circuit levels, load flow, protection coordination, harmonics, and power quality.
Own the technical compliance case for battery energy storage systems and generation, including voltage and frequency response, reactive power capability, and grid code testing.
Review and challenge protection, control, and SCADA architecture across sites.
Lead high-voltage and medium-voltage installation oversight, testing, commissioning, and energisation.
Witness and sign off key testing for substations, protection systems, and grid connection works.
Lead energisation planning and execution.
Troubleshoot electrical issues during construction and early operation.
Ensure as-built systems comply with approved designs and grid requirements.
Respond to RFIs, TQs, and design clarifications, and align design, procurement, and construction.
Support handover to Asset Management.
Support technical due diligence and lender technical advisor requirements.
Work closely with Development, Construction, and Asset Management teams.
Act as the escalation point for complex electrical technical issues.

Electrical Engineer Spain

Fuse Energy · Madrid, Spain (Hybrid) · Full-time · Posted 2026-11-10

Workplace: hybrid

Description

About Us:

Fuse Energy is an energy startup on a mission to make energy abundant and affordable, fast. We combine first-principles thinking with cutting-edge technology to build a radically better energy system.

We’ve raised over $200M from top-tier investors including Balderton, Lakestar, Accel, Creandum, Lowercarbon, Ribbit, 20VC, Hummingbird and Collaborative Fund, alongside strategic angels including Nico Rosberg and GPs behind Meta, Revolut, Spotify and Uber.

We’re building a fully integrated energy company: developing our own solar, batteries and other generation projects, building our own hardware, improving and developing grid infrastructure, trading power in real time, using AI across the business, and installing distributed energy in homes. By selling directly to consumers we cut out the middleman, lower costs and pass the savings on to our customers.

The Electrical Engineer owns electrical engineering for Fuse’s EPC function in Spain, from design through testing, commissioning and energisation, across our infrastructure projects (Solar PV, BESS, Distribution Network, Wind, Gas-Peaker and Data Centres). You are the technical authority for HV and MV systems and lead the team that designs, builds, tests and energises them. You know how to work with Red Eléctrica (REE) and the distribution companies, so every system we deliver is safe, compliant and accepted by the grid operator.

Responsibilities we will trust you with:

Electrical Leadership, Design to Energisation

Lead all electrical engineering for the EPC function, from early design through construction, commissioning and energisation
Act as the HV/MV subject matter expert across all projects, covering substations, grid connections, transformers, switchgear, protection systems and cable networks
Set electrical design standards and make sure they are applied consistently across the portfolio
Review and approve electrical designs from internal engineers, design partners and consultants
Challenge designs to drive safe, compliant and cost-effective solutions

Grid Access, Connection and Compliance

Lead technical review of access and connection permits, connection conditions and compliance requirements
Ensure adherence to the Reglamento de Alta Tensión (RD 337/2014 and ITCs), REBT where applicable, REE operating procedures, distributor technical standards and the technical connection requirements for generation and storage
Manage inspections, OCA verifications and administrative sign-offs, and close out findings
Oversee the technical records and documentation required for authorisation, commissioning and handover of connection assets
Act as the technical interface with REE, distribution companies and third-party developers sharing connection infrastructure

Grid Studies and Technical Standards

Oversee and validate grid studies: short-circuit levels, load flow, protection coordination, harmonics and power quality
Own the technical compliance case for BESS and generation, including voltage and frequency response, reactive power capability and grid code testing
Review and challenge protection, control and SCADA architecture across sites

Construction, Testing and Commissioning

Lead HV and MV installation oversight, testing, commissioning and energisation (puesta en tensión)
Witness and sign off key testing: substations, protection systems and grid connection works
Lead energisation planning and execution
Troubleshoot electrical issues during construction and early operation
Ensure as-built systems comply with approved designs and grid requirements

Delivery and Stakeholders

Respond to RFIs, TQs and design clarifications, and align design, procurement and construction
Support handover to Asset Management
Support technical due diligence and lender technical advisor requirements
Work closely with Development, Construction and Asset Management teams
Act as escalation point for complex electrical technical issues

Requirements

5 to 10+ years in HV/MV electrical engineering within power, utilities, distribution or renewable energy
Hands-on BESS experience (design, grid compliance, commissioning or energisation)
Deep experience of grid connection in Spain: substations, protection systems, cable networks and working with REE and distribution companies
Strong knowledge of Spanish grid access and connection processes and technical requirements for generation and storage
Experience reviewing grid studies (load flow, short circuit, protection coordination, power quality)
Hands-on HV commissioning, testing and energisation experience
Experience leading and developing engineers and commissioning teams
Ability to challenge EPC and consultant designs with evidence
Strong command of Spanish electrical safety regulations and compliance frameworks
Engineering degree (Ingeniero Industrial or Ingeniero Técnico Industrial) with professional registration (colegiación) and authority to sign projects
Fluent Spanish and professional English

Benefits

Competitive salary and eligibility for equity
Biannual bonus scheme
Fully expensed tech to match your needs
Private health insurance
Breakfast and dinner allowance for office-based employees

Benefits vary by location.

Apply

Apply at Fuse Energy

About the Company

Fuse Energy UK

Vertically integrated energy: generation, trading, retail

Fuse Energy UK is a London-based energy company that handles renewable generation, trading, and retail supply for households and businesses in a single chain. It owns and operates solar and wind farms, trades electricity to balance supply and price, and sells energy directly to customers, reinvesting profits into new renewable projects. Its edge comes from being vertically integrated across generation, trading, and retail, with strong backing from investors and a leadership team formerly at Revolut. Its goal is to grow its UK customer base and expand into Ireland, Spain, and the US while scaling up renewable capacity.

Company size: 201-500
Company stage: Series B
Total funding: $200M
Headquarters: London, United Kingdom
Founded: 2022

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