Senior Python Engineer

On behalf of our Client from the UK, Mobilunity is looking for Senior Python Engineer. You will join a small, international product team building an API-first financial technology platform that provides automated working capital solutions to UK small businesses.

• Design, develop and maintain scalable backend services using Python.
• Design and implement domain services using Domain-Driven Design principles.
• Build performant, secure and fault-tolerant serverless solutions on AWS.
• Work closely with subject matter experts to translate business requirements into technical solutions.
• Participate in architectural and technology decisions at both project and company level.
• Design and maintain idiomatic APIs and service boundaries.
• Work with data modelling and SQL to support data-driven decision-making.
• Contribute to infrastructure-as-code and cloud engineering practices.
• Troubleshoot and improve production systems.
• Work with AI coding tools and model-backed product features.
• Mentor other engineers and contribute to engineering best practices.
• Work in an Extreme Programming environment with TDD, continuous deployment and fast feedback loops.

• At least 5 years of experience.
• Strong commercial experience with Python.
• Experience building and running production services on AWS.
• Hands-on experience with AWS Lambda and DynamoDB.
• Experience with event-driven AWS services such as EventBridge and/or Step Functions.
• Strong understanding of typed Python and experience with Pydantic or similar approaches.
• Experience with Infrastructure as Code, preferably Terraform.
• Strong SQL and data modelling skills.
• Experience designing scalable backend systems and APIs.
• Strong understanding of software architecture and system design principles.
• Strong analytical and problem-solving skills.
• Experience working with AI coding tools in a professional engineering environment.
• Advanced English.

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups
• Come on board, and let’s grow together!