SENIOR ELECTRICAL ENGINEER – RENEWABLE GENERATION, SUBSTATIONS & GRID SYSTEMS

Esteyco is an independent civil engineering and architecture consultancy with more than 50 years of experience delivering services worldwide. The company operates across a wide range of civil engineering disciplines and specialties, providing comprehensive solutions for complex infrastructure and development projects.

Driven by vocation and passion, we use engineering and design as tools to build a better future and a better society. We advise and support our clients by delivering innovative and sustainable solutions that enable them to differentiate themselves and enhance their competitiveness.

Esteyco is also distinguished by its strong commitment to research and development, as well as its active involvement in the renewable energy sector, with a particular focus on wind and solar energy. Innovation lies at the heart of our work and is essential to addressing major integral challenges such as the energy transition, while contributing to a fairer and more sustainable world.

The company has offices in Spain and several Latin American countries and undertakes projects in diverse locations around the globe, combining international expertise with a deep understanding of local needs and contexts.

At ESTEYCO we continue to strengthen our Power Systems capabilities and are looking for a Senior Electrical Engineer to join our Renewable Generation and Grid team. The role is focused on the design of LV, MV and HV electrical systems for renewable generation assets, with particular emphasis on substations, overhead lines, grid connection infrastructure and transmission and distribution systems.

The organisation is looking for a highly experienced, technically authoritative professional with a minimum of 12–15 years of relevant electrical engineering experience, including substantial responsibility for conceptual, basic and detailed design. This will be the most senior electrical engineering role in the Energy organisation and will act as Technical Lead for a group of approx. five more junior engineers, supporting their development and ensuring technical quality across the discipline.

General Objectives

As Senior Electrical Engineer, the selected candidate will lead and/or carry out the design of electrical systems for renewable generation projects, from early-stage feasibility and conceptual layouts through basic and detailed engineering. The role will cover onshore wind, solar PV, BESS, hybrid plants and offshore renewable systems as well as transmission and distribution networks, with a strong focus on grid connection infrastructure, substations, overhead lines, HV/MV/LV networks, and electrical protection and control systems. The position will provide the highest level of electrical technical authority within the Energy organisation and will supervise the work of a team of approx. five junior engineers.

The main responsibilities will include:

This is a senior technical leadership position requiring proven experience setting design criteria, reviewing and approving engineering deliverables, resolving complex technical issues, coordinating multidisciplinary interfaces and representing the electrical discipline in front of clients, grid operators, developers, EPC contractors and internal management.

Developing conceptual, basic and detailed electrical designs for renewable generation assets, including LV, MV and HV systems.

Designing and reviewing substations, overhead lines,



underground cable systems, internal collection networks and grid connection infrastructure.

Preparing and reviewing single-line diagrams, layouts, cable routing, equipment sizing, protection and control philosophies, relay coordination concepts, earthing systems, technical specifications and design reports.

Carrying out or supervising electrical studies such as load flow, short circuit, voltage profile, losses, reactive power, grid compliance and connection feasibility studies.

Designing and reviewing electrical protection and control systems, including protection schemes, control architectures, interlocking logic, relay settings inputs, SCADA interfaces and integration with substation automation systems.

Using and coordinating design tools such as PLS-CADD for overhead line engineering and DigSILENT PowerFactory, PSS/E, ETAP or equivalent tools for electrical network modelling.

Supporting Owner’s Engineering, technical due diligence, tender design, EPC documentation review and construction-phase technical support.

Coordinating interfaces with civil, structural, geotechnical, environmental, SCADA, communications and renewable technology teams.

Providing technical input to proposals, client discussions, risk assessments and project planning activities.

Acting as Technical Lead for a group of five junior engineers, assigning work, reviewing and approving technical deliverables, mentoring team members and helping to develop internal design criteria, calculation templates, quality processes and lessons learned.

Project typologies The role will involve participation in projects across different stages of development:

Onshore wind farms, solar PV plants, BESS and hybrid renewable generation assets.

Offshore wind and offshore renewable systems

Transmission & distribution networks as well as grid interfaces and connection infrastructure of generation systems. Substations and related equipment and systems.

Overhead lines, underground cables, collection systems and auxiliary LV/MV systems.

Feasibility studies, conceptual engineering, basic engineering and detailed design.

Tender engineering, EPC technical specifications, Owner’s Engineering and technical due diligence.

Construction support, commissioning support, asset management and repowering or lifetime-extension studies.

Candidate Profile

We are looking for an autonomous, rigorous and proactive engineer with strong technical judgment, excellent communication skills and the ability to work in multidisciplinary and international environments.

The ideal candidate will meet the following criteria:

- Holds a degree in Electrical Engineering.
- Has a minimum of 12–15 years of relevant professional experience in electrical engineering, including at least 8–10 years in renewable generation, substations, grid connection, transmission/distribution or comparable power systems projects.
- Feels comfortable and enjoys acting as technical lead, discipline lead, package lead or senior reviewer, with responsibility for assigning workload,



supervising and mentoring engineers ensuring the timeline and technical quality of electrical deliverables.
- Has extensive hands-on experience in electrical design for renewable generation, substations, overhead lines, grid connection and/or transmission and distribution systems, including responsibility for checking, reviewing and approving engineering deliverables.
- Is comfortable working across the full design cycle: conceptual, basic and detailed engineering. Has experience providing engineering services throughout the project value chain from development, through construction (including FAT/SAT) and during operations.
- Has experience with LV, MV and HV electrical systems, including electrical protection and control systems, and understands their interfaces with generation assets, grid operators and construction teams.
- Has experience in providing technical inputs and workload estimations to offers and/or in evaluating engineering proposals.
- Has worked with tools such as PLS-CADD, DigSILENT PowerFactory, PSS/E, ETAP, PSCAD or similar electrical design and modelling software.
- Has experience in onshore wind, solar PV and/or BESS projects, and interest or experience in offshore renewable systems.
- Has a strong command of English, both written and spoken, and is comfortable working with international clients and teams.
- Is a fluent Spanish speaker.
- Knowledge of additional languages will be valued.

The following will be especially valued:
- Experience in large-scale renewable projects and complex grid connection schemes.
- Specific experience in HV substations, overhead line routing and design, electrical protection and control systems, grid code compliance and utility interface management.
- Knowledge of international standards and good engineering practices, including IEC, IEEE, CIGRE and relevant local grid codes. Knowledge of local standards in specific key markets will be valued.
- Previous experience in consultancy, engineering companies, utilities, developers, EPC contractors or independent technical advisory roles.
- Experience as a technical writer and reviewing EPC designs, technical specifications, BoQ, CAPEX assumptions, equipment data sheets and supplier documentation.
- Demonstrated ability to lead electrical technical packages, coordinate external specialists and act as technical mentor for junior engineers in a structured engineering environment.
- Experience with automation, digital engineering workflows, standardised calculations or AI-supported engineering processes.

Employment Conditions

- Immediate start date.
- Competitive salary, commensurate with the candidate’s experience and qualifications.
- Permanent employment contract.
- Access to a flexible benefits package, including meal vouchers, private health insurance, transportation benefits, and childcare vouchers.
- Based in Madrid.
- Full-time position.
- Flexible start time between 7:30 a.m. and 10:00 a.m.
- Hybrid working model, with up to 6 remote working days per month.
- An additional 2 weeks of remote working per year.
- Ongoing training and professional development opportunities.
- Candidates may be considered for other suitable positions within Esteyco.
- Due to the high volume of applications received, only candidates whose profiles are shortlisted will be contacted.
- Esteyco is committed to the principles of diversity, inclusion, non-discrimination, and equal opportunities. We welcome applications from candidates of all backgrounds and are particularly interested in attracting a diverse range of talent.

📌 Ingeniero eléctrico (Madrid)
🏢 Esteyco
📍 Madrid