Junior Data Specialist, Highview
UK Energy Markets & Grid Analytics
Building long-duration energy storage
Job no longer available
Building long-duration energy storage
21-100 employees
Job no longer available
21-100 employees
Company mission
To work towards a world where clean, reliable, and affordable energy is available to all.
Role
Who you are
- Recent graduate (or final year) in a quantitative field — Computer Science, Physics, Mathematics, Engineering, Economics, or similar
- Solid Python programming skills — you can write clean, readable code using pandas, numpy, and standard libraries. This is not an Excel role
- Comfortable with SQL for querying and transforming data
- Methodical and detail-oriented — you notice when data doesn't look right and want to understand why Good at documenting your work and explaining your reasoning
- Patient with ambiguity — comfortable when there's no perfect answer and you need to make reasoned decisions
Desirable
- Experience cleaning or reconciling messy datasets (coursework, projects, internships)
- Exposure to Git, dbt, or any data transformation tooling
- Interest in energy markets, power systems, or sustainability
What the job involves
- We're looking for a curious, methodical data specialist who wants to deeply understand messy real-world energy data, and use Python to wrangle it into shape
- This is not a role where you build pipelines and walk away
- You'll spend significant time investigating, mapping, and cleaning data from UK energy markets: figuring out which BM units belong to which power plants, mapping substations to ETYS zones, reconciling legacy data formats with current ones, and understanding why two Elexon message types don't quite agree with each other
- Some of this work requires genuine research and investigation — there's no API that tells you the fuel type of every BM unit or which substation feeds which grid supply point
- You'll need to cross-reference sources, make judgment calls, and document your findings
- Python and its data libraries (pandas, etc.) are your main tools to minimise manual work, but you should be comfortable with the reality that some detective work is unavoidable
- Data mapping and research: Map BM units from Elexon to their corresponding power plants, substations, and fuel types — combining API data with manual research
- Map substations to ETYS zones and grid supply points
- Build and maintain reference datasets that link identifiers across different data sources
- Document mappings, assumptions, and edge cases clearly
- Reconcile legacy data formats with current formats (e.g., historical meter data stored differently than recent data)
- Ensure consistency between different Elexon message types (understanding why BOALF and BOD might not perfectly align)
- Clean time-series data: detect and handle outliers, fill gaps, resolve overlapping timestamps Investigate and resolve data quality issues — understanding why something looks wrong, not just flagging it
- Write Python scripts to automate data ingestion from energy market APIs (Elexon, National Grid ESO)
- Build transformation logic using SQL and dbt to structure data for analysis
- Use GitHub Actions to schedule and orchestrate data workflows
Salary benchmarks
Our take
As the world shifts toward cleaner energy, the demand for reliable, sustainable power is only growing. Wind and solar energy are booming, but their output can be unpredictable (sunlight doesn't always shine and the wind doesn't always blow). And this makes storing energy for when it's needed a critical part of building a zero-carbon future.
Highview Power is tackling this challenge with long-duration energy storage using liquid air. Essentially, their system captures excess renewable energy, cools air until it becomes liquid, and stores it safely for hours, days, or even weeks. So, when electricity is needed, the liquid air is warmed to drive turbines, generating power without producing any emissions. Their plants are scalable, reliable, and can be built almost anywhere, making renewable energy easier to access.
Recently, Highview hit an important milestone by raising £130M to build a new facility in Scotland. The plant will create a "stability island" to balance the grid and help transport renewable energy from offshore wind farms to where it's needed most. This project not only strengthens the UK's energy system but also puts Highview in a perfect position for growth, creating jobs, boosting the local supply chain, and taking a huge step toward a fully renewable future.
Kirsty
Company Specialist at Welcome to the Jungle
Insights
Company
Company HQ
London, UK
Leadership
Richard Butland
(Co-Founder & CEO)Alongside Highview Power, Richard is the founder of Artu Capital and Artu Club and co-founder of ARTAH Nutrition. Previously, he co-founded PGI Limited, Influit Production Solutions and Psycle London. He also spent 14 years at Goldman Sachs as the Head of UK Mergers and Acquisitions/Head of UK and European Energy Private Equity.
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