Senior & Lead Software Engineer (Python) | Financial Services | Consultancy
Location : London (Hybrid)
Salary : £100K-£150K + Equity + Private Health
Python | Distributed Systems | API Architecture | Cloud | Microservices
I’m currently looking for: Senior & Lead Back End Engineer (Python, React APIs, AWS)
Our client builds high-scale, high-performance platforms used by millions of customers every day powering intelligent digital experiences, real-time services, and seamless integrations for some of the UK’s most recognisable financial services brands.
They’re a product-led engineering organisation with a deep focus on craft, simplicity, and technical excellence. With massive data volumes, complex system interactions, and an engineering culture that ships fast, this is an environment built for people who love solving hard problems at scale.
If you want to lead architecture, shape platform direction, and build world-class back-end systems that power mission-critical products, this is the one.
ROLE: Senior & Lead Back End Engineer (Software Engineering, Technical Leadership, Mentoring, Architecture Ownership)
We’re seeking Senior & Lead Back End Engineers who can drive backend strategy, guide technical decisions, and elevate engineering standards across key product areas.
This is a senior engineering role - ideal for someone who wants ownership, architectural influence, and the chance to build systems that scale to millions of users.
You’ll define technical vision, lead critical backend projects, and act as a trusted engineering voice in product and platform discussions - shaping everything from API design and system architecture to performance, resilience, and scalability.
What You’ll Bring
Expert-level Python engineering skills — clean, scalable, production-grade code
Strong experience building and designing APIs (REST, GraphQL, or gRPC)
Hands-on architectural depth — microservices, distributed systems, event-driven patterns
Cloud expertise (AWS preferred) — Lambda, ECS, DynamoDB, SQS, SNS, API Gateway
Proven track record delivering high-scale backend systems
Experience leading engineers — mentoring, technical direction, code standards
Excellent communicator with the ability to influence product and technical strategy
Passion for robust engineering — testing, observability, optimisation, performance
Apply now and take a lead role building the backend foundations of one of the UK’s most ambitious consumer platforms.