Senior Python Software Engineer

About Abound

We’re redefining consumer lending in the UK, and beyond. Using advanced AI and Open Banking data, we make fair, affordable personal finance available to more people. While traditional lenders rely almost entirely on credit scores, we look at the full financial picture – how much you spend and what you can afford to repay to build a deeper, more accurate understanding of each customer’s unique financial situation. And we’ve shown it works at scale. We’ve issued over £1.3bn in loans directly to customers while delivering market‑leading credit performance – for every 10 defaults the industry expects, we see only 3. We also reached profitability just 2.5 years after launch. Backed by £2bn+ of funding from top‑tier investors including Citi, GSR Ventures, and Deutsche Bank, we’re recognised as one of Europe’s fastest‑growing fintechs (Sifted, CNBC). Now, we’re expanding into new markets and product lines – and we’re looking for ambitious people who want to learn fast, take ownership, and grow with us.

We’re looking for an experienced Senior Python Engineer to join our engineering team. In this role, you’ll work closely with colleagues in the Finance function to design and deliver automation that supports core financial operations. You’ll translate business requirements into reliable, maintainable systems that improve accuracy and efficiency across key workflows. The position calls for someone who combines strong technical judgment with an interest in understanding how the business runs. You’ll be trusted to scope and implement changes independently, manage expectations with stakeholders, and ensure every improvement is built to last. Your work will form part of the backbone that keeps our financial processes running smoothly and at scale. We value engineers who take ownership, enjoy solving complex problems, and bring clarity to ambiguous requirements. You’ll thrive here if you’re motivated by building systems that make real business impact, can communicate clearly with non‑technical partners, and take pride in well‑designed, high‑quality code.

At Abound, you’ll be part of a culture that values autonomy, curiosity, and continuous improvement. You’ll work with a modern Python‑based stack, gain deep exposure to how financial operations function in a fast‑growing lending business, and have the space to deliver meaningful technical change in partnership with experienced stakeholders.

Our Technology Stack

• Python (including FastAPI, OpenTelemetry, procrastinate, SQLAlchemy, Uvicorn)
• Postgres
• MySQL
• Liquibase
• Retool
• Docker
• AWS

Who You Are

• Seven or more years professional experience in software engineering
• Experience collaborating directly with business stakeholders to gather requirements and translate them into technical solutions
• Experience building or maintaining automation and integrations supporting financial or operational workflows
• Comfort working in fast‑paced environments where accuracy, reliability, and clear communication are essential
• Proficiency in writing well‑structured async Python code with type hints and unit tests
• Experience maintaining codebases for business‑critical systems
• Proficiency in Git for version control
• Basic knowledge of cloud infrastructure with experience working with at least one of AWS, GCP, or Azure
• Strong SQL skills for efficient data management and retrieval
• Knowledge of lending products and business processes will be a major advantage
• Awareness of financial concepts, accounting flows, or reconciliation processes is a plus

What You’ll Be Doing

• Design and develop new Python features and services that automate and support core financial operations, such as payments, reconciliations, and reporting.
• Participate in the full software development lifecycle – from design and implementation to testing, deployment, and monitoring.
• Own a part of the platform, and be responsible for the smooth operation of associated business processes, and their KPIs.
• Collaborate closely with colleagues in Product and Design as well as users (both internal and external) to understand, challenge, and refine requirements.
• Provide second‑line support within business hours, helping to troubleshoot and resolve any system issues that impact our customers.
• Support junior engineers through PRs and pairing.
• Apply strong SQL skills to troubleshoot and improve the performance of data management and retrieval across our Postgres databases.

What We Offer

• Everyone owns a piece of the company – equity
• Hybrid with 3 days a week in the office
• 25 days’ holiday a year, plus 8 bank holidays
• 2 paid volunteering days per year
• One month paid sabbatical after 4 years
• Employee loan
• Free gym membership
• Team wellness budget to be active together – set up a yoga class, a tennis lesson or go bouldering