301 to 325 of 332 Python Jobs in the City of London

reliability, performance, and self‐service tooling. Key responsibilities Design, deploy, and operate containerised services and internal tools used by trading desks and quants (Python‐based backend services, APIs, data pipelines). Maintain and optimise low‐latency systems in colocation environments, collaborating with trading and infrastructure teams on performance and resilience. … observability for services and infrastructure using metrics, logging, and alerting (e.g., Prometheus, Grafana, and related tooling). Key requirements Strong backend development experience with Python , including experience building APIs (e.g., FastAPI or similar frameworks). Experience with Prometheus ‐style observability: metrics, alerting, and dashboards; familiarity with Grafana is a plus. ...

full lifecycle • Own customer implementations — from discovery and solution design through to deployment and post-go-live optimisation • Write and debug production-level code (Python, JavaScript, SQL) for integrations and internal tooling • Identify opportunities to automate workflows and improve internal and external processes • Act as a trusted technical partner … 8+ years in a technical, customer-facing role (e.g. FDE, Solutions Engineer, Implementation Engineer, or similar) • Strong coding ability in JavaScript and SQL (Python a plus) • Experience working directly with customers on complex technical implementations • Comfortable operating across engineering, product, and customer environments • Strong problem-solving skills with the ability ...

tuning generative models. This isn't just a "high-level" role-we need someone who can design the blueprint and then dive into the Python/PySpark code to ensure the foundation is rock solid. Key Responsibilities: Architect & Design: Lead the implementation of on-premises, cloud, and hybrid AI solutions. … Developer Associate) certification. AI Specialization: Proven experience with Prompt Engineering, Azure OpenAI, Document Intelligence (Form Recognizer), and Cognitive Search. Data Engineering: Expert proficiency in Python and PySpark for large-scale data processing. Operations: Familiarity with MLOps or LLMOps frameworks to support production-grade AI. Seniority: 15+ years of total ...

management Support releases and change management processes Build strong relationships with traders, dev teams, and infrastructure Identify and drive stability improvements and automation opportunities (Python) Contribute to onboarding processes and continuous improvement initiatives Non-Negotiable Requirements (Must-Haves) Recruiters should not submit candidates without all of the below : Strong Front … senior stakeholders Need to have excellent written and verbal communication Strong Problem-Solving Ability Candidates will be assessed on this in interview Technical Experience Python (essential) KDB (essential) Additional/Preferred Skills Unix/Linux SQL Understanding of market data flows Monitoring tools (e.g. Dynatrace, Splunk) ITIL/Production Support ...

High-impact role in a small, collaborative team What you’ll be doing You’ll work across both backend and frontend systems, primarily using Python and either React or Vue. There’s flexibility to lean into your strengths, but you’ll have ownership across the stack. What they’re looking … years’ experience in full-stack development Strong skills in Python and/or React/Vue Interest in AI-driven products or “AI-native” thinking If you want to join an early-stage company where your work directly shapes the product, this is a great opportunity to get involved early. ...

growing part of the product Experience with Hotwire (Turbo & Stimulus) and Tailwind CSS Familiarity with background job processing (Sidekiq, Delayed Job, etc.) Experience with Python and FastAPI - our data pipeline and some supporting services are built in Python, and you'd be expected to maintain and contribute to these alongside … cloud infrastructure and deployment platforms Experience working in a startup or high-growth environment Our Stack Backend: Ruby on Rails, PostgreSQL, Sidekiq Data & Services: Python, FastAPI Frontend: Hotwire (Turbo Stimulus), Tailwind CSS, Three.js Infrastructure: Render Tooling: GitHub Actions, Sentry About Resi Resi is the UK’s number one home extension ...

delivery of scalable, resilient infrastructure across a complex global environment. Key Responsibilities Designing and implementing network automation solutions Developing and maintaining automation tools using Python, Ansible, and Terraform Supporting network transformation and infrastructure modernisation Collaborating with architects on new implementations Providing 3rd line support across network environments Working across cloud … premise infrastructure Enhancing network security and performance About You Strong experience in network automation and engineering Proficiency in Python, Ansible, and Terraform Solid networking background (routing, switching, firewalls) Experience with Cisco technologies (CCNP/CCIE desirable) Knowledge of cloud platforms (Azure preferred) Exposure to SD-WAN, load balancing ...

complex data landscapes and building workflows that support better decision making. The role is end to end. That means data engineering in Palantir Foundry, Python and PySpark, through to user-facing applications in TypeScript or React, and embedding AI workflows using AIP Logic and AIP Analysts. You will have ownership … architected, working iteratively to build, demo, and refine based on client feedback. Who They Are Looking For Fluency in one or more of Python, SQL, TypeScript or React, with the ability to pick up others Solid grounding in data engineering, ETL pipelines and application development Familiarity with Palantir (Foundry, Gotham ...

layers Improving system robustness through automation and observability Collaborating with platform and security teams on access, secrets, and compliance Engineering rigor Writing production-grade Python used in long-running services and pipelines Establishing testing, validation, and release practices for ML systems Making trade-offs explicit between research flexibility and production … stability Required Qualifications 37 years of professional experience in ML Ops, Data Engineering, or adjacent backend roles Strong production Python skills (clean APIs, testing, performance awareness) Experience deploying and operating ML models in production environments Solid understanding of: Model training vs. inference requirements Batch vs. streaming data pipelines Failure modes ...

C++ Team Lead - (Principal, Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency) ***This is a hybrid role, 3 days remote and 2 days in the office*** Our client actively encourages diversity, equality and inclusion within its workforce and welcomes applications from a diverse background, REC Solutions Limited does … with your thinking, then my client could be the ideal place for you to develop your career. Benefits (not exhaustive list): Team LeadC++ (Principal, Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency) Competitive salary 25 days annual leave - not including bank holiday Private medical insurance Flexible working hours Company ...

shared architecture across the portfolio. Essential Requirements 3-6+ years building production-grade full-stack applications, with clear ownership. Strong backend experience in Python (FastAPI preferred) and solid database skills (PostgreSQL/MongoDB). Proven experience building and shipping mobile apps with React Native. Strong React fundamentals (Next.js experience … product decisions from engineering perspective. Evidence of shipping quickly in small teams (links to apps, repos, case studies, live products). Desired Node.js alongside Python for services or integrations. App Store/Google Play release experience. Experience with vector databases (e.g., Chroma) and embedding pipelines. LangChain or CrewAI for orchestration ...

setting direction, maintaining standards, and driving output Designing and delivering data solutions across platforms, including low/no-code tooling and code-based approaches (Python, PySpark, SQL) Overseeing the development of user-facing applications and workflows using TypeScript and React Acting as the primary client interface, shaping requirements and translating … sharing and capability uplift Ideal Background 6+ years’ experience in software engineering, data engineering, or full-stack development Strong proficiency across multiple languages, including Python and SQL, with exposure to TypeScript and/or React Deep understanding of data engineering principles, including ETL pipelines, distributed processing, and data architecture Experience ...

Quant Developer — C++/Python (Backtesting & Research Production) London | Full-time | On-site Systematic prop firm combining deep learning and quantitative research to trade global markets. Small, technical team — every hire directly impacts strategy and P&L. The Role Translate Python research into production C++. Build and optimise backtesting/… from a top university in CS, maths, engineering, or physics 0-5 years with C++ in quant finance or data-intensive environments Comfortable with Python for analysis and tooling Builder mindset - ship fast, iterate, own problems Why Here Deep learning meets systematic trading Small team, high autonomy, visible impact from ...

Role: Lead Python Engineer (Hands-on Team Lead) 📍 Location: London – Hybrid (3 days office/2 days WFH) 💰 Salary: Up to 130k base 🏦 Industry: Fintech Platform We’re working with a profitable, high-growth UK fintech building a platform used by wealth and advisory firms to manage investment accounts, portfolios … product platform — both in terms of scale and functionality . As a result, they’re growing the engineering team and looking for a Lead Python Engineer to take ownership of a core part of the platform. The Role This is a hands-on technical leadership role (50-70% hands ...

critical parts of a streaming ecosystem. What You’ll Be Working On Building and supporting APIs and microservices in production Developing backend systems using Python + AWS (Lambda, API Gateway, S3, DynamoDB) Working with event-driven systems (Kafka, SNS/SQS, etc.) Supporting and improving existing production systems Debugging real … world issues and keeping systems stable at scale Collaborating within an existing team + codebase (pragmatic engineering) Tech Stack Python AWS (Lambda, API Gateway, S3, DynamoDB, IAM) Event-driven systems (Kafka, SNS/SQS) Databases (Postgres, DynamoDB, Couchbase) CI/CD (Concourse, Git workflows) Observability (Prometheus, Grafana, CloudWatch) What ...

that support critical services across the ecosystem. What You’ll Be Working On Designing and delivering scalable APIs and microservices Building backend systems using Python + AWS (Lambda, API Gateway, S3, DynamoDB) Handling event-driven architectures (Kafka, SNS/SQS, etc.) Driving system design decisions across distributed systems Improving observability … reliability, and performance in production Debugging complex issues and leading resolution across teams Staying hands-on while setting technical direction and standards Tech Stack Python AWS (Lambda, API Gateway, S3, DynamoDB, IAM) Event-driven systems (Kafka, SNS/SQS) CI/CD (Concourse, Git workflows) Databases (Postgres, DynamoDB, Couchbase) Observability ...

London location – 3-5 days on site p/week Up to £80k DoE plus bonuses Active MoD DV clearance required Experience required in Python, SQL, and ideally Palantir Overview Our client is a secure-sector SME consultancy based in Central London who are looking to bring an experienced Security … consultancy, and wants exposure to modern data platforms and tooling. Required Skills & Experience Proven commercial experience as a Data Engineer Strong development skills in Python Advanced SQL skills with experience working on complex datasets Experience with core data engineering tools and technologies (e.g. ETL/ELT pipelines, data warehouses, orchestration ...

data team. Key Responsibilities Build and maintain scalable data pipelines (full ETL lifecycle) Perform data cleaning, transformation, and integration Work with Microsoft Fabric, Notebooks, Python, and PySpark Manage and develop solutions using SQL Server and Cosmos DB Handle multiple data formats and support data processing workflows Collaborate closely with Data … Engineering and Business Intelligence teams across onshore and offshore locations Requirements Proven experience as a Data Engineer Strong skills in Python, PySpark, and Microsoft Fabric Experience with SQL Server and Cosmos DB Ability to design and deliver ETL pipelines Comfortable working in high-pressure environments Desirable Insurance industry experience (ideally ...

roles and help you get a step ahead. Learn the Command Line (*1.5 weeks) Learn Git & GitHub (*1.5 weeks) Learn JavaScript (*1.5 weeks) Learn Python 3 (*1.5 weeks) JavaScript forms the foundation of almost everything you see on the Internet. Therefore, this is an essential addition language in building your … programming and development foundation. Python is a highly versatile programming language and due to its relatively “easy to understand” commands now one of the most common programming languages used. You can use it for both small and complex tasks, and it is used across many different industries broadening your scope ...

Product Manager (algorithms (Algo), Transaction Cost Analysis (TCA), Execution, Trading, Financial technology, Financial services, FinTech, Equity) An excellent opportunity has arisen for a Product Manager to join a well-established FinTech (Financial technology, Financial services ...

Kubernetes Platform Security Engineer (Contract) 📍 London (hybrid) | 12 months A highly technical, engineering-led firm within financial services is looking for a contractor to support security across a large-scale container platform operating in a ...

London or New York, partially on-site AI will write most of the world's code. The interesting bottleneck is no longer whether a model can produce code; it is whether anyone should trust it. ...

commodities or derivatives Experience supporting and maintaining production applications Exposure to Data Lakes and/or Databricks (or equivalent)/Data migration Exposure to Python or willingness to develop Python skills The details: £75,000 – £90,000 (DoE) Central London office (3 days onsite) Hours ...

Founding AI Engineer | Python, LLMs, RAG | VC-Backed PropTech Rebuilding How People Rent and Buy Salary: £100,000 - £120,000 + equity Location: London (Hoxton) – 5 days/week in-office I’m working with a very early-stage AI company that’s taking a proper swing at the property … manual processes. They’re building something that handles tenant communication, operations, compliance and transactions through AI agents instead. What They're Looking For Python FastAPI LLMs (production systems) AI agent frameworks (LangGraph or similar) RAG pipelines Postgres Redis Async processing and queuing (Celery, RabbitMQ, SQS) Event-driven architecture CI/ ...

product from day one. What You'll Be Doing: Building and maintaining backend services that power reserve monitoring and compliance reporting - primarily in Python/FastAPI Designing and integrating connections to financial data providers and banking APIs Developing frontend dashboards in React that make complex financial data clear and actionable … first engineers on the London team Helping establish engineering practices and standards from the ground up What We're Looking For: Strong Python experience, ideally in data-intensive or financial applications Solid full stack capability - comfortable across backend services and React frontends High agency: you take ownership, move fast ...