About Plug:Chain

Plug:Chain turns curtailed renewable energy into revenue. We deploy flexible, high-density computing infrastructure next to solar plants and run it with our own platform, so energy the grid cannot absorb becomes income for the plant owner. Today, the computing load we run is Bitcoin mining: the most flexible, interruptible buyer of intermittent energy there is.

We are a Barcelona-based team working at the intersection of renewables, data centres and energy storage, and we are at the beginning. The first installations are operating, and the next stage is commercial: turning curtailment, a problem that grows every year for solar owners in Spain, into a portfolio of partner plants across Spain and beyond.

The role

This is a role for someone who wants to help build the commercial side of a company rather than join one that is already built. You will identify, analyse and open new commercial opportunities in key sectors of the energy transition: renewable energy, data centres and battery energy storage systems (BESS). Through market research, first contact with key accounts and the preparation of strategic documents, you will play a central role in the company's expansion, with continuous training provided by the company.

Early stage means responsibility early: you will be in front of prospects, inside the financial models and in the board documents from your first months, with senior supervision and structured training, but without layers between you and the decisions.

Reports to: Head of Business Development / Expansion Lead

Experience: 0–4 years (junior/mid position with a structured career plan)

What you will do

- Market research:



monitor and analyse competitors and trends in the data centre and battery storage sectors; identify new operators, regulation and emerging opportunities.
- Prospecting and lead generation: initiate contact with potential clients, strategic partners and decision-makers through cold calls, email and LinkedIn, generating interest in our energy solutions.
- Basic financial modelling: support the design and update of financial and project feasibility models to assess the profitability of new opportunities, under senior supervision.
- Executive documentation: draft and structure investment reports, technical memoranda and executive presentations for the Board of Directors and investment committees.
- CRM and digital tools: keep the CRM up to date and improve internal processes using software and AI-based tools for task automation and content generation.

What we are looking for

Education and technical knowledge

- University degree in Business Administration, Economics, Energy Engineering, Industrial Engineering or a related field.
- Real interest in, and foundational knowledge of, the energy sector, sustainability, critical infrastructure (data centres) or storage technologies.
- Openness to learning how Bitcoin mining works as an energy technology. No prior crypto experience is required.




- Advanced Microsoft Office skills (Word, PowerPoint and Excel for data analysis and complex formulas).
- Familiarity with or hands-on use of generative AI tools (ChatGPT, Copilot, Gemini, Claude, basic automations) applied to productivity.

Soft skills

- Outgoing and empathetic, with a natural ability to start conversations and build trust from scratch.
- Resilience: a positive mindset and perseverance, essential for prospecting and cold outreach.
- Analytical and writing skills: excellent drafting and synthesis to turn complex data into polished corporate and institutional documents.
- Autonomy and proactivity: initiative to solve problems, propose improvements and manage your time effectively without close supervision.

What we offer

- Real responsibility from the start and exposure to the full cycle, from first call to signed partnership.
- A structured career plan with professional development in a growing company.
- Specialised training, funded by the company, in complex financial models and energy-sector regulation.
- A technology-driven, innovative and versátil environment, with partial remote work.
- Competitive salary (fixed + attractive variable tied to acquisition targets), in line with a junior profile.
- Room to grow with the company: whoever helps build the commercial function now is best placed to lead it as it scales.

Languages: English. Spanish or Catalan appreciated.

If you want to be part of an energy startup at the stage where your work is visible, and you would rather build than maintain, we would like to hear from you.

📌 Junior Business Developer – Energy & Flexible Compute (Barcelona)
🏢 Plug:Chain Energy Technology
📍 Barcelona