Zeti is an award-winning software company building the operating system for clean, hard assets. Through ZetiOS, we help investors and operators finance, manage and optimise clean transport, construction and energy assets and infrastructure, turning detailed, real-time data into better financial, operational and environmental outcomes. Our mission is to accelerate the energy transition at scale by transforming how capital is deployed into assets, and how those assets are operated in the real world.
We sit at the intersection of software, finance and infrastructure, working closely with asset owners, operators and alternative investment managers to unlock performance, reduce risk and cut emissions. At Zeti, a specialist professional services team assembled from financial analysts and operations managers support the implementation of ZetiOS alongside our product team. We take a consultative, hands-on approach, appreciating and accommodating the intricacy of each client's unique business and solving complex, asset-specific challenges.
Founded in 2020 and headquartered in London, Zeti has partnered with leading investors and operators, graduated from the Accenture FinTech Innovation Lab, won international awards including the CoMotion LA New Mobility Challenge and the Visa Everywhere Initiative (Europe), and raised capital from investors such as Powerhouse, Toyota Ventures and HYCAP. Today, ZetiOS manages ~£30m of deployed assets in the UK, with around 4,500 assets connected to the system. This has already helped operators avoid more than 15,000 tonnes of CO₂ and ~50 tonnes of NOx emissions compared to equivalent fossil-fuelled assets. Looking ahead, we have a pipeline of over £400m across the UK, US and Central Europe, alongside new asset classes and business models that significantly expand our opportunity.
We're now entering a critical next phase of growth, and are looking for a Junior Engineer to help us deliver new features and improvements to ZetiOS for our customers.
Role Overview
Reporting into our CTO, the Junior Software Engineer will become a key part of our development team. Following agile methodology, you’ll take ownership of critical requirements from customers and business stakeholders in the form of user stories, and deliver into our production system. You will work across our full tech stack - C# on Azure Functions, Azure Cosmos DB, and React with TypeScript and Material UI - gaining hands-on experience while helping us scale our solutions and accelerate our mission. This is an excellent opportunity for someone early in their career who is hungry to learn, make a meaningful impact and turbocharge their career progression.
Day-to-day Activities
* Write, test, and maintain code in C# for Azure Functions and in React with TypeScript and Material UI for the front-end, with support and guidance from senior engineers
* Work with Azure Cosmos DB to query and manage data, learning to design efficient data models
* Collaborate with product managers, designers, and other engineers to understand requirements and deliver features
* Participate in code reviews, both giving and receiving feedback, to maintain high code quality and learn best practices
* Investigate and fix bugs, learning to troubleshoot issues across the full stack
* Use AI-assisted development tools (such as Claude Code, GitHub Copilot, or similar) to accelerate your work and improve code quality
* Contribute to DevOps processes, including CI/CD pipelines using GitHub Actions
* Stay curious about industry trends and emerging technologies and tools, proactively suggesting improvements
What we're looking for:
We’re looking for someone with a genuine enthusiasm for software engineering and a willingness to learn. No minimum years of experience are required — this role is well-suited to recent graduates or career changers who can demonstrate strong foundational skills and a passion for building great software. If you do not know how to do everything on the day-to-day activities list, that does not mean that you should not apply.
We’re looking for someone with:
* Foundational knowledge of C# or a similar object-oriented language, and a willingness to learn Azure Functions
* Some exposure to front-end development using React, TypeScript, and HTML & CSS. Material UI experience is a plus
* An interest in databases and data modelling; experience with NoSQL databases such as Azure Cosmos DB is a bonus
* Familiarity with AI-assisted development tools such as Claude Code, GitHub Copilot, or similar (e.g. Codex, Cursor)
* A basic understanding of version control with Git and an awareness of CI/CD concepts.
* Strong problem-solving skills and a genuine curiosity about how things work
* Good communication skills and a collaborative, team-first attitude
* An eagerness to learn and grow in a fast-paced startup environment
Details:
Salary: £40-45,000 per annum
Location: We’re based in FORA Albert House in Shoreditch. We work together in a private office there three days per week, with two days of remote work.
* 25 days of annual leave (excluding UK bank holidays)
* Half-yearly company summits, featuring social activities
* Free access to lounges, co-working spaces, bike storage and gyms at over 60+ FORA sites in UK & Europe, including at our Albert House office
* Free drinks and snacks at the office
Diversity & Inclusion: Zeti is an equal opportunity employer, and both welcomes and demonstrates diversity.
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