Senior Front End Developer – AI & LLMs

Reposted Yesterday
Square Mile, Greater London, England, GBR
In-Office
Mid level
Fintech • Information Technology • Payments • Consulting • Energy • Financial Services
The Role
Seeking a Front-End Engineer to lead UI architectural evolution, design component libraries, ensure performance, and guide technical leadership in a rapidly growing team.
Summary Generated by Built In

About Modo Energy

The energy transition is the biggest infrastructure buildout in human history. Modo Energy is the data platform at the centre of it.

We build the benchmarking, forecasting, and valuation tools that the world's most serious energy investors, developers, and operators depend on to make decisions. If a battery gets financed, built, or traded anywhere in the world, there's a good chance Modo data was in the room.

Founded in 2019, we're 80+ people across London, New York, Sydney, and Madrid; $30M Series B, AI-native, and moving fast.

This is a rare chance to join a category-defining company at the moment it's scaling globally.


The Role

We seek a Frontend Engineer to help lead the architectural evolution of our UI. As part of a team, your main goal is to build a frontend architecture that supports rapid, AI-assisted development.

We are AI-native and our tech stack is TypeScript, React, and Next.js in a modern monorepo architecture, designed to support rapid feature development and AI-assisted engineering workflows.

We are looking for individuals who love product-building and want to work with pace at a mission-oriented start-up.

Responsibilities

  • Architectural Strategy: help with the technical direction for our frontend monorepo to ensure long-term scalability.
  • Component System Architecture: help design and develop our internal UI library (based on MUI).
  • Performance Engineering: help build and improve high-performance, low-latency user interfaces.

Essential:

  • 5+ years of professional experience in Frontend Development.
  • Excellent TypeScript, React, and modern JavaScript with Next.js
  • Experience with Material UI (MUI) or similar component libraries.
  • Testing principles and experience with frameworks like Jest and Cypress or Playwright.
  • AI assisted development skills.
  • An eye for design (UI/UX): Ability to build polished, aesthetically pleasing interfaces and bridge the gap between design and engineering.
  • Proficient with Git, Docker, and CI/CD workflows.
  • Familiarity with Monorepo structures and tools (e.g., Turborepo, Yarn Workspaces).
  • Bachelor’s/Master’s degree in Information Technology, Computer Science, or equivalent experience.

Desirable:

  • Any start-up / scale-up experience is beneficial.
  • Familiarity with Python is advantageous.
  • Any experience of the energy sector is highly desirable.

Salary & Benefits

  • £70,000 - £120,000
  • Equity Share Scheme
  • Private top-tier Healthcare and Dental coverage with Bupa, Salary sacrifice pension with 3% employer contribution; 25 days annual leave (excluding bank holidays), plus 5 flexible days to be taken on a Monday or a Friday.
  • A great social scene, company nights out, outdoor events, networking events, and lots of snacks and drinks – obviously!
  • The salary range listed reflects industry benchmarks for this role. Modo Energy's policy is to pay top of personal market - if you're exceptional, we'll make it work. We want the best engineers!

  • NOTE: Hybrid Work Environment. We are all in-office days Tuesday, Wednesday & Thursday, and we are based by Euston Square.

  • Modo Energy is an equal opportunity employer. Employment decisions are made on the basis of qualifications, merit, and business need. We do not discriminate on the basis of age, national origin, physical or mental disability, race, religion, pregnancy, sexual orientation, gender identity, veteran status, or any other characteristic protected under applicable UK law, including the Equality Act 2010.

If you require assistance or a reasonable accommodation during the application or interview process, please contact us at [email protected]

What You Can Expect From Us

At Modo Energy, we believe that exceptional work deserves exceptional reward. We're a high-performance team; ambitious, collaborative, and genuinely motivated by the scale of what we're trying to build.

You'll have real ownership from day one, work alongside some of the brightest people in the industry, and be part of a company that's defining a new category in the global energy market. We're hybrid: everyone works Tuesday to Thursday in office, with Monday and Friday flexible. We offer top-of-market compensation, equity for every employee, and the space to take your career wherever you want it to go.

We're looking for people who want to do the best work of their careers. If that's you, we want to talk.

Skills Required

  • Bachelor's/Master's degree in Information Technology, Computer Science, or equivalent experience
  • 3+ years of professional experience in Frontend Development
  • Strong proficiency in TypeScript, React, and modern JavaScript
  • Hands-on experience with Next.js
  • Experience with Material UI (MUI) or similar component libraries
  • Solid understanding of testing principles and experience with frameworks like Jest and Cypress or Playwright
  • Familiarity with Monorepo structures and tools (e.g., Turborepo, Yarn Workspaces)
  • Proficient with Git, Docker, and CI/CD workflows
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The Company
HQ: Birmingham
40 Employees
Year Founded: 2019

What We Do

Modo Energy is the all-in-one platform for battery energy storage analysts. Started in 2020 by co-founders Q and Tim, Modo Energy has become one of the most trusted voices in the ever-expanding battery energy storage market. Through an integrated mix of price forecasts, revenue benchmarking, in-depth research, educational materials, real-time market screens, and downloadable data - Modo users have all the tools at their fingertips to finance, build, and operate the energy system of the future. Modo Energy’s most recognizable products include: - Benchmarking Pro, which tracks the most valuable revenue streams for individual storage sites and compares performance across leaderboards. - Forecast Pro, a 2050 projection built for energy storage and used to finance future battery projects. - The Energy Academy, a series of educational videos explaining the mechanics of the electricity market. - Modo: The Podcast, on which some of the most respected doers, disruptors, and thought-leaders in the industry share their experiences and insights with a global audience. - And much, much more. Head to the platform to explore Modo's products for yourself - sign-up is free. Want to find out how Modo Energy can help you navigate the evolving battery energy storage landscape? Get in touch with a member of the team today. Our platform includes specialist data, organised so that our users can intuitively navigate the wider market. We also provide written and video insights that cut through the complexity of the industry. Here at Modo, we build connections. We stand by our core company values of inclusivity, transparency, impartiality. We work closely with others throughout the energy industry to deliver the information and insights people need in ways that make sense. To learn more about Modo, visit modo.energy

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