Backend Engineer

At Modo Energy were building the global standard for benchmarking and valuing the worlds electrification assets - unlocking returns for battery energy storage solar wind and data centres.

At Modo Energy were on a mission to build the information architecture for the energy transition - we want to be the only place to come to for information on the global journey to net zero. Take a look at our platform where we provide open access to an array of content on the energy transition.

Were a dedicated and passionate team building a category-defining business working on one of the worlds most important priorities. We are looking for individuals who love product-building want to work with pace at a mission-oriented startup and will collaborate with us in shaping the culture of a rapidly growing team.

The role

We are hiring a Backend Engineer to join our AI Analyst team. The AI Analyst is an LLM-powered product embedded in the Modo Terminal that helps customers interrogate our data and research using natural language. Think of it as a domain expert colleague who knows everything Modo has ever published and can pull live data on demand.

Were building an agentic system that retrieves articles queries databases interprets energy market data and writes answers that our customers can trust.

Youll work in a small cross-functional team with a lot of autonomy.

Responsibilities

• Building and improving our agentic backend: LangChain-based orchestration tool design retrieval pipelines and prompt engineering running on FastAPI.
• Designing tools (MCPs CLIs APIs etc) that let LLMs work with energy market data effectively: strict guardrails sensible aggregation and outputs that fit within token budgets.
• Building monitoring and evaluation infrastructure.
• Working directly with domain experts (energy analysts data scientists) to ensure the system gives answers that are accurate and useful.
• AWS infrastructure and deployment. We use Terraform and youll be involved in the full lifecycle from local development to production.

About you

• 5 years Python. Strong backend engineering fundamentals: you write clean well-structured Python and youre comfortable owning services end-to-end from API design through to deployment and monitoring.
• Real experience with AWS and infrastructure-as-code (Terraform). Youve deployed and maintained production services.
• Hands-on experience building LLM-powered applications ideally with LangChain but any serious work with agentic systems RAG pipelines or tool-calling architectures counts.
• Proficiency with FastAPI or similar async Python frameworks.
• Expert-level use of AI coding tools (Cursor Claude Code GitHub Copilot or similar). Obsessive about keeping up to speed with AI coding developments. We write a lot of code with these tools and expect you to be fluent with them: knowing when to trust them when to intervene and how to get the most out of them.
• Good taste and judgment. This matters more than it might sound. Youll be making constant decisions about how to structure LLM interactions what data to surface and when something is good enough to ship. We want someone who cares about the end result.
• Comfort working in a small fast-moving team where youll be expected to figure things out make tradeoffs and ship.

Nice to have:

• Experience with energy markets.

Important Details

• Hybrid Work Environment: This role is hybrid with time split between working from home and our London office with in-office days from Tuesday through Thursday.
• Compensation & Benefits: Modo Energy offers a competitive salary along with a comprehensive benefits package including private top-tier healthcare and dental coverage with Bupa a pension scheme with employer contribution 25 days of annual leave (excluding bank holidays) 5 flexible days to be taken on a Monday or Friday and a day off for your birthday.

Modo Energy is an equal opportunity employer. Our employment decisions are made on the basis of qualifications merit and business need. We do not discriminate against age national origin physical or mental disability race religion pregnancy sexual orientation gender identity veteran status or any other characteristic protected by federal state or local law. If you need assistance or a reasonable accommodation with an application or the interview process please contact us via email at

What you can expect from Modo Energy

We want to attract and retain the best talent at Modo Energy and we give our people the freedom and opportunity to develop themselves and flourish.

We are committed to building a diverse and inclusive team at Modo Energy as we believe a variety of backgrounds skills and interests is what makes our company stronger. If you share our values and our enthusiasm for supporting the transition to greener energy systems we encourage you to apply. We have a number of positions open which could be for a range of backgrounds and experience levels. Please get in touch if you are interested and you dont meet all the requirements or if you exceed them!