TagX is a fast growing, dynamic technology unit within TagEnergy, focused on innovation, digital solutions, and business growth. We build the data and software systems that enable smarter asset management, trading, and operational decision-making across our energy portfolio.

Our team works at the intersection of energy, technology, and strategy—turning ideas into impactful systems that drive real-world decarbonisation.

We are looking for bold minds to join us in Lisbon or London. If you thrive on innovation, teamwork, and making a real impact in the renewable sector.

Contribute to build the data infrastructure that powers TagEnergy’s advanced analytics and operational platforms.

Working closely with data scientists, analysts, and other engineers to ensure that our data pipelines are reliable, scalable, and production-ready, you’ll be helping build a platform that supports energy market modeling, and operational monitoring.

Profile

• 2–4 years experience in data engineering or backend data-focused software development.
• Proficient in Python, including libraries such as Pandas and PySpark.
• Experience building and maintaining cloud-based data pipelines.
• Familiarity with orchestration frameworks (e.g., Airflow, dbt, or similar).
• Familiarity with git for projects version control.
• Degree in Computer Science, Engineering, Mathematics, or another quantitative discipline.
• Comfortable working in collaborative, cross-functional teams and communicating technical concepts clearly.
• Practical, outcome-oriented, and excited by working on real-world problems in the energy sector.

Conditions

• Full-time contract
• Based in Lisbon or London, depending on were you already are, or want to be,
• Starting date: as soon as possible

TagX is a fast growing, dynamic technology unit within TagEnergy, focused on innovation, digital solutions, and business growth. We build the data and software systems that enable smarter asset management, trading, and operational decision-making across our energy portfolio.

Our team works at the intersection of energy, technology, and strategy—turning ideas into impactful systems that drive real-world decarbonisation.

We are looking for bold minds to join us, in Lisbon or London. If you thrive on innovation, teamwork, and making a real impact in the renewable sector.

You will develop advanced analytics and modeling capabilities that support commercial and operational excellence across the TagEnergy portfolio.

Working closely with energy managers, optimization experts, and technical leadership you will  build production-grade models and tools that inform real-time and strategic decisions.

You will bring proven experience in the energy sector, strong Python development skills, and a track record of applying data science in production environments. You will help define modeling standards, mentor other team members, and represent data science perspectives in cross-functional discussions with leadership and business stakeholders.

Profile

• 5+ years of experience in data science, with at least 2 years in the energy sector (e.g., electricity markets, renewables, asset optimization, trading).
• Strong Python skills, with experience contributing to production-grade codebases (version control, testing, modularization, documentation).
• Proficiency in working with time-series data, mathematical modeling, and optimization techniques relevant to power systems.
• Strong communication skills and experience presenting complex ideas to senior stakeholders, including commercial, technical, and executive teams.
• Experience working in cross-functional teams alongside software engineers, data engineers, and business leaders.
• Degree in a quantitative field such as Engineering, Mathematics, Computer Science, or Physics. Master’s or PhD is a plus.

Conditions

• Full-time contract
• Based in Lisbon or London, depending on were you already are, or want to be
• Starting date: as soon as possible

TagX is a fast growing, dynamic technology unit within TagEnergy, focused on innovation, digital solutions, and business growth. We build the data and software systems that enable smarter asset management, trading, and operational decision-making across our energy portfolio.

Our team works at the intersection of energy, technology, and strategy—turning ideas into impactful systems that drive real-world decarbonisation.

We are looking for bold minds to join us, in Lisbon or London. If you thrive on innovation, teamwork, and making a real impact in the renewables sector.

You will help design and build the software and cloud infrastructure powering our data products, optimization systems, and operational tools.

Working closely with data scientists, data engineers, and energy domain experts you will lead architectural decisions, write production-grade code, and ensure our platforms are scalable, maintainable, and secure.

This is a hands-on role for someone with deep experience in Python and other languages, DevOps tooling, infrastructure-as-code, and cloud-native development. You’ll be expected to lead by example, propose and test new ideas, and help scale a platform that supports real-world decision-making in clean energy.

Profile

• 5+ years of experience in software engineering, with demonstrable experience designing cloud-based systems and working in cross-functional teams.
• Strong Python skills (for application code and automation), plus knowledge in other languages (e.g., Go, Rust).
• DevOps Knowledge:
  • Proficiency in CI/CD tooling (e.g., GitHub Actions, Azure DevOps, or equivalent).
  • Experience with containerization and orchestration (e.g., Docker, Kubernetes).
  • Familiar with Infrastructure-as-Code tools (e.g., Terraform, Pulumi, etc).
• Experience with Azure or another major cloud platform, including networking, storage, and compute services.
• Able to balance technical trade-offs and think at both the application and infrastructure level.
• Comfortable working with analytics and data science teams and translating their needs into technical systems.
• A Degree in Computer Science, Engineering, or a quantitative field—or equivalent experience.

Conditions

• Full-time contract
• Based in Lisbon or London, depending on were you already are, or want to be
• Starting date: as soon as possible

TagX is a fast growing, dynamic technology unit within TagEnergy, focused on innovation, digital solutions, and business growth. We build the data and software systems that enable smarter asset management, trading, and operational decision-making across our energy portfolio.

Our team works at the intersection of energy, technology, and strategy—turning ideas into impactful systems that drive real-world decarbonisation.

We are looking for bold minds to join us, in Lisbon. If you thrive on innovation, teamwork, and making a real impact in the renewables sector.

Reporting to the Head of Data, you will work with energy technology experts, market specialists and external technology providers, to analyse data, build models, and create insights that drive decision-making across the business.

Profile

• 2-3 years in data science, data analysis, or a similar role.
• Experience working with energy-related datasets, including time-series data.
• Proficient in Python for data analysis and modelling.
• Strong educational foundation in engineering, mathematics, sciences, or economics or equivalent experience.
• Comfortable collaborating with different teams and working in fast-paced environments.
• Able to work independently and find creative solutions to data challenges.

Conditions

• Full-time contract
• Based in Lisbon
• Starting date: as soon as possible

TagX is a fast growing, dynamic technology unit within TagEnergy, focused on innovation, digital solutions, and business growth. We build the data and software systems that enable smarter asset management, trading, and operational decision-making across our energy portfolio.

Our team works at the intersection of energy, technology, and strategy—turning ideas into impactful systems that drive real-world decarbonisation.

We are looking for bold minds to join us, in Lisbon or London. If you thrive on innovation, teamwork, and making a real impact in the renewables sector.

You will solve real-world problems in energy markets and battery storage optimization.

Working closely with our Head of Data Science, energy managers, data engineers, and external partners, you will deliver models and systems that improve decision-making across trading, operations, and asset development.

Profile

• 3+ years of experience in data science, analytics, or a related quantitative field.
• Strong proficiency in Python and associated data science libraries (e.g., Pandas, NumPy, scikit-learn).
• Demonstrated interest or experience in electricity markets, power trading, or grid operations.
• Familiarity with the technical and commercial aspects of grid-scale battery storage (e.g., degradation, cycling, dispatch strategies).
• Proficiency with time-series analysis, SQL, and data architecture best practices.
• Ability to distill technical concepts into actionable insights for non-technical stakeholders.
• Degree in Engineering, Mathematics, Physics, Computer Science, or a similar field.

Conditions

• Full-time contract
• Based in Lisbon or London, depending on were you already are, or want to be,
• Starting date: as soon as possible

Within our Transaction team, you will play a key role in supporting the transaction team across the full project lifecycle – from development through financing, construction, and operations. You will be responsible for building and maintaining robust financial models, supporting M&A and financing processes, and providing analytical insights that shape strategic decisions.

Profile

• 3-5 years of experience in Consulting / Advisory Firm, a project finance division of a Commercial Bank or in a finance division of a Renewables player (fund or IPP).
• Strong financial modeling capabilities on excel, analytical/quantitative skills, presentation skills

Conditions

• Full-time contract
• Based in Lisbon
• Starting date: as soon as possible

Within our Consolidation team in Lisbon, you will oversee accounting data from our global outsourced accounting firm, produce financial reporting, manage treasury, and ensure compliance with reporting and taxation rules across all Group geographies. You will also ensure IFRS compliance, streamline processes, support audits, and provide accurate financial insights to guide business decisions.

This role offers a clear path to senior finance leadership, from Senior Finance Controller to Finance Director, with increasing responsibility across global operations. High performers can progress to CFO or other strategic finance roles, influencing business growth, M&A, and investor relations.

Profile

•  5+ years of experience in consolidation, group controlling and reporting under IFRS
• Master’s Degree in Finance, Accounting, or related field
• High Level of Proficiency in Microsoft Excel (Power Query and Power BI would be a plus)
• Operational English proficiency

Conditions

• Full-time contract
• Based in Lisbon
• Starting date: as soon as possible

TagEnergy is growing its international presence in Europe by expanding its operations to Germany, the largest electricity market in Europe. Initially, we are building on our strong experience and track record in large scale batteries to combine these with clean power generation assets over time.

As the Senior Project Development Manager, reporting to the Managing Partner Germany, you are part of an entrepreneurial team at the forefront of the energy transition driving the company’s market entry and growth—both greenfield development and M&A—in Germany.

Responsibilities

• Develop TagEnergy current projects pipeline, identify new project opportunities, secure grid connections, relevant sites and related activities for BESS, wind and solar as well as hybrid assets;
• Establish and manage development partnerships as well as all relevant local stakeholders from utilities, grid operators to municipalities and landowners;
• Drive energy project development tasks for interconnection and permitting until ready-to-build and start of construction;
• Manage viability of the business case of the projects and support modeling and procurement tasks;
• Support the project financing negotiations;
• Manage tender processes and M&A opportunities;
• Contribute to the business strategy in the German market and help define future opportunities for clean power in the fast-changing regulatory and market conditions.

Profile

• 5-10 years experience developing large scale renewable energy projects, preferably working with renewable energy developer, IPP, or grid operator IPP—BESS experience is a strong plus;
• Ability to fit in TagEnergy culture and values: entrepreneurship, agility, teamwork and result focus;
• Master’s degree in engineering or business administration—specialization in renewable energy, environment, or project management is a plus;
• Practical experience with German permitting and planning processes for infrastructure, preferably renewable energy and/or battery storage;
• Proven track record in managing interconnection with German TSOs/DSOs, including grid connection requests and technical requirements;
• Reliable, rigorous and positive with a solution-oriented attitude;
• Strong interpersonal skills and ability to build good working relationships (e.g. with landowners, local authorities, development partners, grid-operators, off-takers and lenders);
• High level of integrity, ethical standards, sound judgement, as well as passion for making things happen—especially clean energy infrastructure;
• Self-driven with an ability to work in a complex environment;
• Strong analytical skills and organizational capabilities;
• Excellent written and verbal expression in German and English—other languages are a plus;
• TagEnergy has a strict no-jerk and no nay-sayer policy.

Conditions

• Full-time contract
• Based in Berlin, regular travels (25%+) to sites and occasionally to TagEnergy HQ in Lisbon;
• Starting date: as soon as possible

TagEnergy is growing its international presence in Europe by expanding its operations to Germany, the largest electricity market in Europe. Initially, we are building on our strong experience and track record in large scale batteries to combine these with clean power generation assets over time.

As the Project Development Manager, reporting to the Managing Partner Germany, you are part of an entrepreneurial team at the forefront of the energy transition driving the company’s market entry and growth—both greenfield development and M&A—in Germany.

Responsibilities

• Develop TagEnergy current projects pipeline, identify new project opportunities, secure grid connections, relevant sites and related activities for BESS, wind and solar as well as hybrid assets;
• Establish and manage development partnerships as well as all relevant local stakeholders from utilities, grid operators to municipalities and landowners;
• Drive energy project development tasks for interconnection and permitting until ready-to-build and start of construction;
• Manage viability of the business case of the projects and support modeling and procurement tasks;
• Support the project financing negotiations;
• Manage tender processes and M&A opportunities;
• Contribute to the business strategy in the German market and help define future opportunities for clean power in the fast-changing regulatory and market conditions.

Profile

• 2-7 years experience developing large scale renewable energy projects, preferably working with renewable energy developer, IPP, or grid operator IPP—BESS experience is a strong plus;
• Ability to fit in TagEnergy culture and values: entrepreneurship, agility, teamwork and result focus;
• Master’s degree in engineering or business administration—specialization in renewable energy, environment, or project management is a plus;
• Practical experience with German permitting and planning processes for infrastructure, preferably renewable energy and/or battery storage;
• Proven track record in managing interconnection with German TSOs/DSOs, including grid connection requests and technical requirements;
• Reliable, rigorous and positive with a solution-oriented attitude;
• Strong interpersonal skills and ability to build good working relationships (e.g. with landowners, local authorities, development partners, grid-operators, off-takers and lenders);
• High level of integrity, ethical standards, sound judgement, as well as passion for making things happen—especially clean energy infrastructure;
• Self-driven with an ability to work in a complex environment;
• Strong analytical skills and organizational capabilities;
• Excellent written and verbal expression in German and English—other languages are a plus;
• TagEnergy has a strict no-jerk and no nay-sayer policy.

Conditions

• Full-time contract
• Based in Berlin, regular travels (25%+) to sites and occasionally to TagEnergy HQ in Lisbon;
• Starting date: as soon as possible