Senior Modelling Software Engineer - Chronos

Please note that we are open to considering candidates who require visa sponsorship (subject to eligibility and company approval) We’re looking for a Senior Software Engineer to help us build and maintain the Python codebase behind Aurora’s Chronos battery storage modelling product. You’ll lead or co-lead a small team (4-6 people) working in a collaborative engineering environment, owning feature development and improving code quality, maintainability, and developer experience in the model stack used across our business. You’ll thrive here if you enjoy writing clean, maintainable Python, shaping libraries and packages that other teams rely on, while raising engineering standards across the organisation and empowering your team to do their best work through coaching and mentoring. The position suits an individual with 5+ years of experience in Python software engineering who is interested in a career applying software engineering techniques to modelling software solutions. Key Responsibilities Lead and manage a small team of modelling software engineers, supporting their development and engagement Manage on-time delivery of robust and scalable model features Design, implement, and maintain Python modules/packages in the modelling codebase; own components over time and steward their quality and usability for other teams Translate modelling methods into production‑quality code, collaborating with method owners in the Modelling team; ensure implementations are readable, tested, and traceable Improve code quality and developer experience by refactoring for clarity, strengthening interfaces and simplifying implementations Champion automated testing and TDD; driving the adoption of modern software engineering practices in the model development team Participate in code reviews and technical design discussions Identifying and addressing architectural bottlenecks and opportunities to improve scalability and developer experience Skills, Knowledge and Expertise Required attributes: Professional Python experience ( 5+ years ) in a commercial, team‑based software environment, delivering components used by other teams/customers Experience in applied software architecture and design patterns Experience building with Test Driven Development and Continuous Delivery Experience in DevOps/Infrastructure development including containers and CI/CD Experience leading small teams, managing and mentoring junior colleagues Experience stewarding internal libraries, packaging and dependency management at scale Experience in effective and efficient agentic-first development Desirable attributes: An interest in working in the energy/decarbonization sector Experience engaging with internal stakeholders and colleagues in other teams Experience developing software for modelling, simulation or mathematical optimisation What we offer Some of the benefits we include are: Private Medical Insurance Dental Insurance Parental Support Salary-Exchange Pension Employee Assistance Programme (EAP) Local Oxford Discounts Cycle-to-work Scheme Flu Jabs At AER, we are committed to offering flexibility in the way we work. Most of our roles are hybrid with a mix of in-office/home working and potentially adjustable working hours. Let’s discuss what works for you and AER during the interview process. The Company is committed to the principle that no employee or job applicant shall receive unfavourable treatment on grounds of age, disability, gender reassignment, race, religion or belief, sex, sexual orientation, marriage or civil partnership, pregnancy, and maternity. To apply, please submit your Résumé / CV, a personal summary, your salary expectations and please inform us of your notice period. Unfortunately, we are unable to accept applications via email, telephone, or social media platforms. To be considered for this position, please submit your application using the link provided. Applications submitted through any other channel will not be reviewed.