Legal intern

Location

Bilbao, Spain

About us

Zelestra is a client-focused, multi‑technology, global renewable energy Spanish company, committed to doing things the right way. Our purpose is clear: to change the world by making decarbonization a reality for our partners.

We are a vertically integrated company, specialized in the development, commercialization, construction, and operation of large‑scale renewable energy projects (solar, BESS, wind).

Zelestra is backed by more than two decades of experience, and with a strong presence in key growth markets across the U.S. and Europe and supported by EQT, one of the world’s leading investment funds, with €270 billion in total assets under management. 

Mission

You will work side by side with experienced in-house lawyers on real corporate work. That includes corporate housekeeping across a large portfolio of companies, powers of attorney, notarial deeds, and providing ongoing support and practical solutions to the business’s day-to-day legal queries.

You will also deal regularly with notaries, registries and leading external law firms. The role also includes a significant share of administrative and billing support, which requires rigor, method and strong organization: keeping track of invoices from notaries, registries and external advisors.

Responsibilities

• Billing support and legal operations: track and process invoices from notaries, registries and external advisors, follow up on payment status with finance and procurement, and help manage the monthly invoice batches with our notaries.

• Support to the corporate team on a wide range of needs:
  
  
  
  • Corporate tasks such as powers of attorney, changes of directors, registered office and company name, shareholders' agreements, statutory books
  
  
  • Managing the physical archive of original deeds and corporate records
  
  
  • Coordinating with notaries for signings, apostilles or arranging the legitimization of signatures
  
  
  • Coordinating with external providers and advisors
  
  
  • Supporting M&A processes when needed, including due diligence and post-closing work
  
  
  
  

• Contract review: support the team in reviewing agreements and preparing related documents, such as termination letters.

• Corporate legal queries: help answer questions from business and finance teams on corporate matters.

Job Requirements

• A recent Law degree; A Master's degree or a double degree is a plus but not required.


• High level of English. You will work daily with colleagues and advisors in several countries.


• A proactive attitude and genuine commitment. You take ownership, follow things through and keep track of the details.


• A real desire to learn and grow in an international corporate legal environment.


• Good organizational skills and comfort with Excel and digital tools.

What we offer

• Close mentoring from senior in-house lawyers.


• A collaborative team that values initiative and gives you real responsibility as you grow.


• Internship Agreement: Availability to sign a collaboration agreement with your university or training center (or Fundación Novia Salcedo).


• Start Date: 2026


• Location: 100% on-site. Bilbao Office (Alameda Urquijo, 13) 


• Duration: Maximum duration permitted by the candidate’s academic program


• 
  
  Remuneration: Paid Internship
  
  

If you want to start your legal career learning how corporate law works in practice, we would love to hear from you.

Zelestra celebrates the diversity of thought and experience that comes from a variety of backgrounds, including, amongst others, gender, age, ethnicity… Our mission is to contribute to a fairer and more equitable society.JR 3412

#LI-ONSITE