Senior FullStack Engineer

• Design and develop new Python services and backend features that automate and support core financial operations including payments, reconciliations, and reporting. • Own part of the platform and be responsible for the smooth operation of associated business processes and their KPIs. • Identify opportunities to use AI pragmatically — improving internal tooling, automating manual workflows, or enhancing product capabilities using LLMs and third-party AI APIs. • Collaborate closely with Product, Design, and business users to understand, challenge, and refine requirements. • Support junior engineers through PR reviews and pairing, and provide second-line support during business hours.

• Have 7+ years of professional experience in software engineering. • Have strong proficiency in Python including async code, type hints, and unit tests. • Have experience building backend services using frameworks such as FastAPI. • Have strong SQL skills with experience working with relational databases such as PostgreSQL or MySQL. • Have experience designing and maintaining RESTful APIs. • Have experience building or maintaining automation and integrations that support financial or operational workflows. • Have experience with message queues or background job systems. • Have proficiency with Git and collaborative development workflows. • Have experience with containerised environments such as Docker and CI/CD pipelines. • Have basic cloud infrastructure knowledge with hands-on experience in at least one of AWS, GCP, or Azure.

• Have experience integrating third-party AI APIs or building AI-assisted internal tools. • Have knowledge of lending products and lending operations. • Have awareness of financial concepts, accounting flows, or reconciliation processes. • Have experience with Angular and TypeScript on the frontend. • Have experience with OpenTelemetry or similar observability tooling.

• Design, build, and maintain Python backend services supporting financial operations. • Participate in the full software development lifecycle from design through deployment and monitoring. • Apply strong SQL skills to troubleshoot and improve data management and retrieval. • Build and maintain AI-assisted features and integrations in a reliable, observable, and cost-conscious way. • Work with stakeholders to prototype, test, and iterate on AI-enabled workflows. • Help establish practical patterns for using AI in production including structured outputs, evaluation, fallback handling, and human review. • Support junior engineers through reviews and pairing.

Abound is one of the most exciting fintech stories in the UK right now. In just five years, the co-founders have built a profitable, fast-growing lending platform that was named the UK's number one fastest-growing tech company by The Sunday Times in 2026, with nearly 500% annual revenue growth. The company generated £69 million in revenue and £9 million in profit before tax in 2024, which is remarkable given that, among the top 15 high-growth UK companies tracked by Sifted, Abound was the only profitable one. They have secured £2.2 billion in lending capacity from Citi, Deutsche Bank, Waterfall, and others, and have been listed among the top 250 global fintechs by CNBC. What makes Abound especially interesting as a place to work is the leadership pedigree: Gerald Chappell was previously a Partner at McKinsey and EY, where he led digital lending and credit analytics solutions globally, while Dr Michelle He was a Director at EY with a PhD in machine learning. The broader leadership team brings experience from Goldman Sachs, Citi, Airbnb, and other major institutions. The UK Glassdoor entity sits at 4.6/5, with every single employee recommending it to a friend. What comes through in reviews is the flat structure, data-driven culture, quick career progression, and the chance to learn directly from seriously experienced leaders. Everyone gets equity ownership, a 30-day paid sabbatical after 4 years, a free WellHub membership, and plenty of team socials. A couple of things worth knowing: some Glassdoor reviews flag high targets and performance pressure, and Abound runs a hybrid model from its London offices rather than being fully remote. That said, if you want to be part of a profitable, rapidly scaling UK fintech where your work has a real impact on making credit fairer for millions of people, Abound is a brilliant place to do it.

• Receive equity ownership in the company. • Work in a hybrid pattern with 3 days per week in the London office. • Take 25 days holiday plus 8 bank holidays. • Receive 2 paid volunteering days per year. • Take a one-month paid sabbatical after 4 years. • Access an employee loan, free gym membership, and a team wellness budget.

Abound is redefining consumer lending in the UK using advanced AI and Open Banking data to make fair, affordable personal finance available to more people. Having issued over £1.3bn in loans with market-leading credit performance and reaching profitability just 2.5 years after launch, Abound is backed by £2bn+ from Citi, GSR Ventures, and Deutsche Bank and recognised as one of Europe's fastest-growing fintechs.