Top Python Jobs in London

Train and post-train LLMs using SFT/RLHF/DPO, build reward models and large-scale data pipelines, run distributed multi-GPU training, design evaluation benchmarks, and optimize models for production inference and serving.

Build and run a physical and derivatives Aluminium trading desk: originate and execute trades across the value chain, manage supply chains and counterparties, develop hedging strategies, monitor market fundamentals and risks, deliver P&L growth, and provide strategic market analysis to senior management.

As a Software Engineer on the Agent Engineering team, you'll design and build AI agents to enhance customer interactions, collaborating with various industries and addressing complex challenges.

As a Senior Fullstack Engineer, you'll design and develop features for a legal AI application, focusing on frontend technologies, while collaborating with a cross-functional team in a fast-paced environment.

The Growth Analytics Lead will analyze growth data, define KPIs, conduct complex analyses, and support strategic recommendations for business performance.

The Senior Software Developer will design, develop, and optimize cloud-based low-latency data processing systems while collaborating with analysts to implement trading strategies.

As a Senior Data Engineer at Simple Machines, you'll lead the design and build of cloud-native data platforms and pipelines, ensuring high performance and compliance while consulting directly with clients to deliver effective data solutions.

As an Entry Level Software Developer, you will assist in developing mobile or web applications, participate in code reviews, and research new technologies.

Lead the autonomy performance for Robotaxi, connecting technical metrics to product outcomes, while overseeing performance measurements, debugging, and cross-functional team execution.

The Risk Manager will build the risk management function, assess risks, ensure compliance, and develop controls for growth across payments and financial crime.

The Financial Controller will manage financial reporting, accounting operations, and audits across multiple entities, ensure adherence to IFRS and US GAAP, and lead continuous improvement initiatives.

Lead enterprise data modelling and semantic/knowledge modelling across Snowflake and Databricks, govern canonical entities and lineage, define standards and guardrails, support agentic AI data products, mentor architects, and present architecture to stakeholders to ensure compliance, performance, and interoperability.

Design, build, and maintain cloud infrastructure, services, and APIs; integrate backend systems with an embedded platform; write automated tests, debug issues, and apply secure distributed systems practices to ensure scalable, reliable operation.

Develop and maintain security-focused cloud services and infrastructure, design APIs and backend systems, integrate with embedded platforms, fix bugs, write automated tests, and apply cloud and secure software best practices to ensure scalable, reliable, and secure operation.

The Applied AI Engineer will develop AI features for consumers, optimize AI tools, and enhance workflows in the energy sector.

Own reliability, performance, and scalability of Postgres and ClickHouse databases. Build scalable data pipelines, design analytical schemas and DBT models, migrate data to ClickHouse, implement data quality checks, eliminate duplicates, and manage database infrastructure via IaC.

Work directly with enterprise customers to design, implement, and deploy production-ready AI agents using IFS Loops. Integrate with customer systems, tune agent behavior, troubleshoot deployments, iterate for performance and adoption, and document/handoff stable solutions to engineering or support teams.

Own technical strategy for large enterprise accounts, drive multi-product adoption and complex sales cycles, architect cloud-to-serverless migrations, design POCs, navigate security/compliance and procurement, mentor peers, and influence product roadmap.

The Senior Backend Software Engineer will design, build, and maintain scalable backend systems. Responsibilities include collaboration with teams, API implementation, and ensuring best practices in software engineering.

Design, implement, and optimize real-time embedded firmware for DSP cores and MCUs (RISC-V/Arm). Develop drivers, RTOS components, bring up hardware, create test strategies, use JTAG/trace tools for debugging, collaborate cross-functionally, and produce documentation and code reviews to ensure performance, determinism, and producibility.

Join Lovable as a Data Scientist to leverage analytics for business insights, analyze user behavior, and support product strategies through data-driven decisions.

The role involves developing and optimizing machine learning models and collaborating on research projects with quantitative researchers.

Join as a Database Platform Engineer to design, build, and operate critical database platforms, ensuring high availability and performance in a collaborative environment.

As a Software Engineer, you'll develop and enhance core analytics libraries using C++ and Python, collaborate with quants and traders, and ensure high-quality software delivery.

Conduct research using machine learning techniques to develop investment strategies, leveraging extensive data and computational resources.