Lead Software Engineer

Lead Python EngineerUp to £140K + Bonus + EquityWe are partnering with a profitable fintech scale-up seeking a Lead Python Engineer to play a key role in building its US investment infrastructure.The business has established a successful investment platform in the UK and is now building the technology, workflows and financial infrastructure required to support investing across US markets. This is a hands-on leadership role where you'll lead a small pod of engineers whilst remaining deeply involved in architecture, design and software development.The OpportunityYou'll help design and build the systems that underpin trading, execution, settlement, portfolio management and investment operations for US-listed products. You'll join a highly collaborative engineering team and have significant influence over technical direction, architecture and delivery as the platform continues to scale.Key ResponsibilitiesLead a pod of 3-4 engineers whilst remaining hands-on in the codebaseDesign and build core financial infrastructure supporting US investment productsDevelop systems covering trading, execution, settlement, brokerage, portfolio and investment workflowsDrive architectural decisions and technical direction within your teamWork closely with Product and Engineering leadership to shape solutions and delivery plansMentor engineers through code reviews, technical guidance and best practicesBalance rapid delivery with long-term scalability, maintainability and reliabilityContribute to the continuous improvement of engineering standards, tooling and development processesTechnology StackPython, FastAPIPandas / NumPySQLAlchemy, PydanticMySQL / PostgreSQL / RedisGCP, Docker, KubernetesRequirementsStrong commercial experience building backend systems with PythonProficiency with Pandas/NumPyPrevious experience leading engineers or acting as a technical leadStrong understanding of architecture, system design and software engineering best practicesExperience building and supporting production-grade applicationsExcellent communication and stakeholder management skillsComfortable operating in a fast-paced, high-ownership environmentMessage Chris Williams for more details.