At a Glance
- Tasks: Build and maintain data collection tools while experimenting with AI extraction methods.
- Company: Join Voltility, a fast-growing market intelligence platform in the energy transition sector.
- Benefits: Gain hands-on experience, fast progression, and the chance to shape the future of energy data.
- Other info: Exciting opportunity for growth in a dynamic environment focused on cutting-edge technology.
- Why this job: Be part of an innovative team and make a real impact in the energy and data centre markets.
- Qualifications: Solid Python and SQL skills; experience with data pipelines and web scraping is a bonus.
The predicted salary is between 25650 - 31350 £ per year.
Company overview
Voltility is a market intelligence platform for the people building, powering and financing the energy transition and data centre power markets. We track battery storage and hybrid power projects across the US and Europe, and in 2026 launched data-centre power coverage. Following new investment we’re growing the team quickly, so this is a chance to join early and help shape the business at an exciting time.
Role overview
The Junior Engineer helps build the tooling that collects, structures and checks Voltility's data. This is a hands-on developer role for someone hungry to learn, working alongside a senior engineer on an AI-led data stack. You’ll own well-scoped pieces of the pipeline from day one, learn the data and the energy markets behind it, and take on more as you grow. Expect fast progression, real responsibility and room to experiment with new AI extraction approaches.
Key responsibilities
- Build and maintain individual collectors and parsers for public sources to specification
- Write and maintain tests, monitoring and documentation for the pipelines you work on
- Investigate and fix pipeline failures and data errors reported by the research team
- Help build and improve the review tooling researchers use to check machine-collected data
- Experiment with AI and LLM-based extraction on new source types and report what works and what does not
- Learn & develop the data model, taxonomy and the power and data centre markets the data describes
Suggested experience
- Early-career developer with solid Python and SQL skills plus proven time authoring & maintaining data pipelines
- Experience developing or integrating with APIs both is a bonus
- Experience with web scraping tools and approaches, from work, study or personal projects
- Curious and quick to learn, comfortable asking questions and taking feedback from code review
- Hands on experience using transformer based AI tooling including: agentic coding harnesses, small language models, vision models
- Demonstrable experience in synthesizing structured data from unstructured documents, understanding the various steps that you’d need to go through to robustly scrape & format data for loading into a relational database
- Interest in energy or infrastructure markets is a plus, not a requirement
Junior Engineer in London employer: Voltility
Voltility is an excellent employer for those looking to make a meaningful impact in the renewable energy sector. With a vibrant work culture that encourages collaboration and innovation, employees benefit from flexible working arrangements, opportunities for professional growth, and regular engagement with industry leaders. This role not only offers exposure to the corporate world but also positions you at the forefront of clean energy investment, making it a rewarding place to advance your career.
StudySmarter Expert Advice🤫
We think this is how you could land Junior Engineer in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Voltility or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Voltility.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Voltility.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Voltility that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Junior Engineer in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Voltility.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Voltility and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Voltility
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Voltility uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
