Platform Software Engineer Python - Core Engineering

£150k GBP Onsite WORKING Location: Central London, Greater London - United Kingdom Type: Permanent Platform Software Engineer (Python) - Core Engineering Location: London Location: London (Hybrid) Client: Tier-1 Global Banking Environment Domain: Platform Engineering / Core Systems Industry background: Open (finance not required) The Opportunity We are hiring a Platform Software Engineer to join a core engineering group building foundational platforms used by quant, trading, and analytics teams inside a major global banking environment. This is not an application development role. The team builds the underlying platforms, frameworks, tooling and runtime capabilities that other engineering and quant teams build on top of. You will be working on the technical foundation layer, not business features. Candidates from any industry (big tech, telecoms, SaaS, gaming, infrastructure, etc.) are welcome - deep platform development experience is the key requirement, not finance knowledge. What You'll Be Doing: You will contribute to the design and development of internal engineering platforms, including: • Building core Python-based platforms, frameworks, and shared services • Designing developer platforms used by multiple engineering and quant teams • Developing APIs, SDKs, tooling and service frameworks that enable large-scale system development • Improving scalability, reliability, and performance of shared platform components • Working on distributed systems and service architecture foundations • Enhancing CI/CD, deployment tooling, and engineering productivity platforms • Contributing to standards, patterns, and reusable infrastructure used across the organisation • Partnering with quant and engineering teams to ensure platform capabilities support advanced workloads Required Experience (Must-Have): • Strong professional experience in Python as a primary engineering language • Background in platform engineering / core systems development • Proven experience building internal platforms, frameworks, or shared engineering infrastructure • Experience designing systems that are used by other developers • Strong understanding of: • Distributed systems • Service-oriented / microservice architectures • APIs and SDK design • System performance and scalability • Experience working on large-scale, multi-team engineering environments To hear more details please apply to this position or contact Ben Mortimore at Anson McCade. Job Reference: AMC/BMO/QD02