> Markdown version of [/jobs/ext/1376331-market-access-product-owner](https://www.wearedevelopers.com/jobs/ext/1376331-market-access-product-owner). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Market Access Product Owner - **Company:** Mustard Systems - **Location:** London, UK - **Salary:** £74,605.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Algorithmic Trading, Python (Programming Language), Jupyter Notebook, Low Latency, Real Time Data, Virtual Agents - **Published:** July 22, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5809592316 ## About the Role * Previous product ownership experience - ideally in a technology B2B/trading environment * Be a decision maker, specifically when it comes to the direction of the product when technical or delivery feasibility forces trade-offs * Experience building and maintaining relationships with external stakeholders * You can set and own both functional and non-functional requirements * You're a quick learner - able to gain new product context quickly and have a constant * drive to improve * Excellent judgement on detail: you know which details matter, check them carefully, and catch issues before they become problems for the business * Willing to travel for a few days 2-3 times a year to meet suppliers Nice-to-haves : * PO experience of a product with no obvious UI such as an API * Comfortable using Python and Jupyter notebooks, with AI assistance where useful, to analyse product performance * An understanding of value betting * An interest in cricket ## Description Working closely with a highly talented development team you will: * Set the strategic vision for growing our access to global liquidity sources * Discover and build relationships with business critical suppliers and manage their expectations alongside internal stakeholders * Build and oversee operations and monitoring to ensure efficient day to day use of the products * Define what our trading systems need to achieve and work with developers to translate this into deliverable technical specifications, including non-functional requirements * Represent the needs of the business to the team; curate and prioritise the backlog of work delivered in fortnightly sprints and own when work can be considered complete * Contribute to the wider product vision in a team of three product owners and a Head of Product This is a high-autonomy role with the opportunity to build a strategically important productarea and influence how we operate.The product connects real-time betting opportunities, internal trading teams and external suppliers: * The team develops and maintains low latency real-time data feeds about available betting opportunities then provides the tooling to safely take advantage of them at scale * Your customers are internal development teams and traders whose products, using our best-in-class predictions, decide which bets should be placed * External suppliers enable our access to these opportunities - it'll be your job to represent our trading needs to them and understand their constraints This role will suit someone curious and analytical, who is commercially minded. 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