Rejobs
3E

Junior Civil Engineer

Become a Junior Civil Engineer with 3E in Barcelona, Spain, working on PV, BESS, and Wind projects. Assist in site assessments, technical drawings, and project management. Enjoy flexible working hours, meal vouchers, and a dynamic international team.
3E
3E
Barcelona, Spain   Flexible   Full Time  UTC+01:00

3E

Company Overview

3E (3E NV)

Brussels, Belgium

1999

Approximately 100-150 employees (source: devex.com). No public revenue figures available for 2023 or later.

What They Do

3E focuses on solar energy, wind energy, battery energy storage systems (BESS), sustainable buildings, sites, energy infrastructure, and energy markets. The company offers SaaS platforms and consulting services throughout the entire lifecycle of renewable projects, from development to operation (source: devex.com). Their flagship product, SynaptiQ, is a SaaS platform launched in 2010 that optimizes over 20 GW of connected capacity and provides advice on 90 GW of assets in 2023 (source: 3e.eu). This platform offers performance analytics, proactive monitoring, ROI recommendations, and multi-stakeholder reporting, and is designed for PV, wind, and BESS portfolios.

Projects & Track Record

3E has supported renewable projects in over 40-60 countries with a track record of more than 20 years. A notable project includes optimizing an 800 MW wind portfolio for Renovatio in Eastern Romania through customized measurement campaigns (source: 3e.eu). For Opdenergy in Spain, 3E provided regulatory and technical guidance for hybridizing existing installations with BESS and renewable energy (source: 3e.eu). Ongoing efforts include a partnership with RJE for performance management in Spain and collaborations such as digitizing ReNew Power's 4,100 MW wind/solar portfolio in India via SynaptiQ.

Recent Developments

In 2023, 3E achieved milestones of 20 GW of connected capacity in SynaptiQ and 90 GW of advised assets, and opened an office in Spain (source: 3e.eu). A strategic partnership with BayWa r.e. was announced for global monitoring of PV portfolios using SynaptiQ, focusing on operational excellence across 10 GW of assets (source: baywa-re.com). In 2024-2025, 3E collaborated with TGS on integrating Virtual Met Mast technology into Wind AXIOM for improved wind farm planning.

Working at 3E

3E offers positions in engineering (wind/solar/BESS modeling, system engineering), software/data analysis (development of SynaptiQ, AI solutions), consulting (due diligence, feasibility, project management), and more, with a multidisciplinary team of about 100-150 experts (source: 3e.eu). Active recruitment is taking place at the headquarters in Brussels and at key locations such as Barcelona, Paris, and Cape Town, reflecting the expansions in these regions. The culture emphasizes innovation, international collaboration, and long-term customer relationships, as noted by co-founder/CTO Werner Coppye.

Contact


Last updated on 2025-12-27 | Report an issue

Job Description

To consolidate and further develop its consultancy activities, 3E is looking for a Civil Renewable Energy Engineer, in the Barcelona office, where you will be working with our team of experienced experts who will be your continuous sounding board as you meet the needs of our customers.

You will work as a Civil Engineer, with your main focus on the different activities related to the design stage of a PV, BESS or Wind projects. You will assist 3E's clients, by assessing the suitability of a project site, preparing the technical drawings needed for permit applications, and later, for construction.

You will gradually grow into a full advisory coordinator role, being exposed also to other phases of a renewable energy project, including construction, operational activities, and technical due diligence.

At first your responsibilities will be to deliver civil technical drawings and calculation notes for the design of solar, BESS and Wind projects in and outside of Spain. Next to that, you will gradually evolve towards performing other technical assessments, either from the office or during site inspections.

Your main tasks will include:

  • Foundation design using CYPE
  • Drainage design
  • Earthwork calculations, using Civil 3D and proprietary tools
  • Review of geotechnical, hydrological, and topographic reports
  • Collaboration with the drafting team to prepare deliverables
  • Drafting reports for administrative, basic, or detailed projects
  • Preparation of bills of quantities
  • Project constraint analysis using QGIS
  • Preparation of PV, wind, and BESS layouts based on manufacturer specifications
  • Perform site inspections before, during and after construction of the projects
  • Perform site inspections during the commissioning and operational phase of the projects.

As a consultant you will either work as an expert on a project managed by one of your colleagues or you will take the role of project manager yourself. As a project manager you are responsible for the communication with your client, potential other stakeholders and your colleagues, for managing the budget and planning of the project and for its timely and qualitative delivery.

Requirements

We are looking for a dynamic colleague who is eager to learn, who can bring an open and flexible mindset and who has very strong organisational skills.

  • You have a Master or Bachelor's degree in Civil Engineering.
  • You have a clear interest for Renewable Energy, and the mindset of a consultant: you are client-oriented, dynamic and a quick learner.
  • Ideally you have a first working experience in Renewable Energy Project Design, Project Development and/or construction.
  • You are open to travel regularly for short of midterm periods to project sites in Spain, Portugal, Italy or Latin America.
  • You have strong communication skills.

Of course, there are some non-negotiables:

  • You read, write and speak fluently in English and Spanish.
  • You have experience in civil design and design software (AutoCAD & CYPE).

What gives you extra points:

  • Software: PV Case, Civil 3D.
  • Other languages such as Italian are a plus!

We will make sure you are onboarded within our team, teaching you all in-and-outs of the role.

Benefits

In addition to joining a fast-growing international company that promotes a stimulating atmosphere in a highly motivated group of people, 3E offers a unique opportunity to further develop yourself, delivering innovative services.

Furthermore:

  • Salary in line with your level of experience
  • Other parts of the salary package: mealvouchers, transportation vouchers, medical insurance.
  • Flexible working hours /Home office.
  • An international environment: projects in over 100 countries worldwide, colleagues of more than 35 nationalities.

Get Job Alerts

Get alerts for Wind Energy jobs in Barcelona, Spain

About the role

December 11, 2025

Full Time

Company

December 30, 2025

Flexible

3E

3e.eu

  •  Barcelona, Spain

Entry-level to some experience preferred

UTC+01:00

Apply now

Job expired?

Please let 3E know you found this job on Rejobs. This will help us grow and get more people to work on renewable energy!

Discover how you’re connected

View connections

See your contacts at 3E on LinkedIn to leverage your network in applying for this position.

Share with Friends

The stakes are high, and the time for talk has passed. Now is the time for action. Help a friend accelerate the shift to a sustainable future.

Share this job - Junior Civil Engineer - with your folks, and help them find a career to be proud of.