Job description
Senior Backend Engineer
London
Company Overview
Our client is a rapidly scaling enterprise AI platform operating in the financial services sector. The business builds workflow automation and AI-driven systems used by large, regulated financial institutions to streamline complex, data-intensive processes. Backed by top-tier investors, the company is in a high-growth phase and expanding its engineering team to support increasing enterprise adoption.
Role Overview
We are seeking a Senior Backend Engineer to help design, build, and scale backend systems that underpin an enterprise AI platform used in regulated financial environments. The role focuses on high-performance backend services, large-scale data processing, and secure system design.
You will work closely with machine learning, product, and infrastructure teams to productionise AI workflows, ensure system reliability, and support enterprise-grade security and compliance requirements. This is a hands-on senior role with influence over technical direction and system architecture.
Key Responsibilities
Required Experience
Package & Benefits
London
Company Overview
Our client is a rapidly scaling enterprise AI platform operating in the financial services sector. The business builds workflow automation and AI-driven systems used by large, regulated financial institutions to streamline complex, data-intensive processes. Backed by top-tier investors, the company is in a high-growth phase and expanding its engineering team to support increasing enterprise adoption.
Role Overview
We are seeking a Senior Backend Engineer to help design, build, and scale backend systems that underpin an enterprise AI platform used in regulated financial environments. The role focuses on high-performance backend services, large-scale data processing, and secure system design.
You will work closely with machine learning, product, and infrastructure teams to productionise AI workflows, ensure system reliability, and support enterprise-grade security and compliance requirements. This is a hands-on senior role with influence over technical direction and system architecture.
Key Responsibilities
- Design, develop, and maintain scalable backend services and APIs
- Build and optimise data pipelines for large, structured financial datasets
- Ensure systems meet security and regulatory standards (SOC 2, GDPR, FCA)
- Collaborate with ML engineers to deploy and integrate machine learning models
- Optimise PostgreSQL schemas and queries for performance and scale
- Implement caching, messaging, and asynchronous processing patterns
- Participate in technical design reviews and support less experienced engineers
- Monitor production systems, troubleshoot issues, and improve reliability
- Contribute to coding standards, documentation, and engineering best practices
Required Experience
- 7+ years of backend engineering experience in production environments
- Strong Python expertise and experience with modern frameworks (FastAPI, Flask, Django)
- Advanced PostgreSQL knowledge, including performance tuning and scaling
- Experience with Redis and caching strategies
- Background in asynchronous task processing (Celery or similar)
- Experience with message brokers and event-driven systems (Kafka, RabbitMQ, Azure Service Bus, etc.)
- Solid understanding of REST APIs and microservices architectures
- Cloud experience (Azure preferred; AWS or GCP acceptable)
- Experience with Docker and Kubernetes
- Strong understanding of security best practices and data protection
- Familiarity with CI/CD pipelines, automated testing, and Git
- Strong communication skills and experience working cross-functionally
Package & Benefits
- Competitive salary plus equity
- Opportunity to work on complex, high-impact systems in a regulated environment
- High level of technical ownership and influence
- Fast-growing engineering team with clear progression opportunities
- Additional Information
