951 to 975 of 1,213 Python Jobs in London

high-performing market maker in London. This is a junior-to-mid role focused primarily on Java development, with a secondary responsibility owning straightforward Python ETL/data ingestion into AWS and PostgreSQL. This is a growing team focused on data ingestion and building tooling for the wider firm. What … batch jobs, integrations) used across the business Write clean, testable code with solid engineering discipline (testing, code review, debugging, production support) Maintain and extend Python-based ingestion/ETL (pragmatic plumbing, not heavy data engineering) Work with PostgreSQL (schemas, migrations, performant queries, data validation) Improve service reliability: monitoring/logging ...

prepares for its next growth phase and Series A. The Role We’re looking for a Senior Software Engineer with strong TypeScript, Python and Node.js experience to help design and build core backend services powering the platform. This role has a heavy backend focus, working on APIs, distributed systems … data pipelines that process large volumes of external signals. What You’ll Work On • Designing and building backend services using Node.js, Python and TypeScript • Developing APIs and integrations with internal and external data sources • Working on data ingestion pipelines and event-driven systems • Writing clean, maintainable, and well-tested code ...

London | Hybrid (1-3 days/wk if London-based; 1-3 days/mo outside London) A leading consultancy seeks a Python/React/TypeScript developer for cloud-native AWS apps supporting high-impact public sector programmes in Agile teams. Key Responsibilities … Design/develop scalable full-stack AWS solutions (Lambda, DynamoDB, SQS). p]:pt-0 [&>p]:mb-2 [&>p]:my-0'> Build RESTful APIs (Python frameworks) + responsive React/TypeScript UIs. p]:pt-0 [&>p]:mb-2 [&>p]:my-0'> Support CI/CD pipelines, automated testing, Git, code ...

Senior Software Engineer | Python | AI Systems | London | £120k to £160k + Equity Location: London hybrid Salary: £120k to £160k + meaningful equity Building AI systems is easy. Building AI systems that behave predictably in production is not. We are working with a well funded Series A startup tackling exactly that … enjoy solving difficult systems problems and building software that actually holds up in the real world, this is a rare opportunity. Tech stack Python (FastAPI, Django or Flask) - experience across Rust, Golang, C++ useful AWS (experience with Azure or GCP also useful) Cursor and Claude Code SQL and strong database ...

London - hybrid 1-2 days onsite every 2 weeks Inside IR35 - Umbrella only Skills required: Intermediate to advanced practical experience with: React and TypeScript Python AWS services i.e. Athena/Glue, DynamoDB, ECS, S3, Lambda, SQS, Step Function, etc Automated testing frameworks for Python and JavaScript Terraform for infrastructure ...

based processes * Containerize applications using Docker * Monitor model performance, data drift, and system health using CloudWatch * Automate data pipelines and feature workflows using Python & SQL * Ensure secure access and governance using AWS IAM and best practices Core AWS Stack Amazon SageMaker | Amazon S3 | Amazon Redshift | AWS Lambda | Amazon CloudWatch … What We're Looking For Strong hands-on experience with AWS ML infrastructure Experience deploying and monitoring ML models in production Proficiency in Python and SQL Knowledge of Docker and CI/CD pipelines Experience with Infrastructure-as-Code (CloudFormation preferred) This role focuses on transforming machine learning from experimentation ...

Software Engineer in order to contribute to the development of the next iteration of their platform. They are seeking someone with keen proficiency in Python and Django primarily in the London area who want to join a globally expanding, highly successful team. Responsibilities Contribute to the development of the next … Lead product initiatives from conception to delivery Qualifications Bachelor's degree in Computer Science (or related field) 4+ years of relevant work experience using Python and related tech stack in a professional environment Django, FastAPI, PostgreSQL, Kafka, AWS, Kubernetes experience and knowledge Experience in a Fintech or Financial services organisation ...

Software Engineer (Python/React) Location: London (Hybrid) Experience: 1-5 Years Sector: Elite FinTech Firm Compensation: Up to £140,000 Base + Industry Leading Bonus + Comprehensive Package A leading FinTech firm in London is seeking a talented Software Engineer to join its growing technology team. This … models • Quant Logic/Research models for Alpha Generation Key Responsibilities Design, develop, and maintain scalable, high-performance applications Build robust backend systems using Python and/or modern frontend interfaces using React Collaborate with cross-functional teams including traders and quants Requirements 1-5 years of professional software engineering ...

production. This role owns that. Who you are You're a Data/ML Engineer with strong software engineering instincts. You write clean Python, you're comfortable wrangling dataframes, and you know how to build pipelines that don't break at 2am. Required 🐍 1–3 years of commercial experience … data engineering, ML engineering, or a similar role 🛠️ Strong Python skills with hands-on pandas/dataframe experience 🔁 Experience building and running data pipelines (ETL/ELT) with orchestration tools ☁️ Familiarity with cloud platforms (GCP preferred) and tools like BigQuery 🗂️ Comfortable working with messy, real-world data—CSV ingestion, schema ...

/ELT pipelines and Data Marts using PySpark, EMR, and Glue. Legacy Modernisation: Architect the conversion of SAS Base/Macros into modular, testable Python code using SAS2PY and manual refactoring. Performance Tuning: Optimise Spark execution (partitioning, shuffling, caching) to ensure cost-efficient processing of massive financial datasets. Quality & Governance … Implement rigorous CI/CD, unit testing, and data reconciliation frameworks to ensure "penny-perfect" accuracy. Technical Stack Engine: PySpark (Expert), Python (Clean Code/SOLID principles). AWS: EMR, Glue, S3, Athena, IAM, Lambda. Data Modeling: SCD Type 2, Fact/Dimension tables, Data Vault/Star Schema. Legacy ...

/ELT pipelines and Data Marts using PySpark, EMR, and Glue. Legacy Modernisation: Architect the conversion of SAS Base/Macros into modular, testable Python code using SAS2PY and manual refactoring. Performance Tuning: Optimise Spark execution (partitioning, shuffling, caching) to ensure cost-efficient processing of massive financial datasets. Quality & Governance … Implement rigorous CI/CD, unit testing, and data reconciliation frameworks to ensure "penny-perfect" accuracy. Technical Stack Engine: PySpark (Expert), Python (Clean Code/SOLID principles). AWS: EMR, Glue, S3, Athena, IAM, Lambda. Data Modeling: SCD Type 2, Fact/Dimension tables, Data Vault/Star Schema. Legacy ...

Full Stack Developer (Python + Next.js) Full Time | On-site London, UK or Luxembourg Overview A fast-growing European technology company working at the intersection of AI and drug discovery is looking for a Full Stack Developer to join their engineering team. The organisation is building next-generation software platforms … full-stack platform that enables scientists to run and analyse complex biological simulations and experiments. Responsibilities include: Building and maintaining backend services in Python , including APIs and data-processing pipelines Developing frontend applications using Next.js and React Designing and implementing FastAPI endpoints for data-intensive application Writing robust tests using ...

this dynamic market. Must Have Experience Experience in delivering production code. 5-10 years in Finance or Trading Systems. Advanced C++ skills. Strong Python engineering experience. Strong understanding of databases (SQL and high-performance solutions). Expertise in building and supporting high-availability , mission-critical systems . Desireable Experience building … markets. Experience with Postgres , ClickHouse , or other high-performance storage solutions. Exposure to real-time data, low-latency networking, and distributed systems. Our Stack Python, C++. Multi-cloud infrastructure/deployment. Standard SDLC (i.e., Git workflow, build, continuous integration). Git/JIRA/Confluence. High-availability database clusters (Postgres ...

environment. Key Responsibilities Design, develop, and maintain high-performance trading, pricing, and analytics systems Implement quantitative models and strategies using C/C++ and Python Optimise applications for low latency, high throughput, and stability Work extensively in Linux environments , including automation via shell scripting Collaborate with quants, traders, and technology … testing, and version control using Git Required Skills & Experience Expert-level development experience in C and/or C++ Strong hands-on experience with Python in production environments Deep knowledge of Linux systems , performance tuning, and debugging Proficiency in shell scripting (Bash or similar) Strong experience with Git and collaborative ...

working across a modern DevOps and platform stack including: Kubernetes Terraform Hybrid cloud infrastructure (on-premise + Azure) CI/CD & Automation GitHub Actions Python Azure Services Azure Kubernetes Service (AKS) Azure Virtual Machines Azure Virtual Networks Azure Load Balancer Azure Application Gateway Azure Storage Accounts Azure Blob Storage Azure … company’s platform and infrastructure strategy Designing and improving hybrid Azure + on-premise environments Driving Kubernetes platform improvements Building automation with Terraform and Python Improving observability and monitoring across systems Mentoring a Platform Engineer and helping shape platform best practices Working closely with engineering teams to improve developer experience ...

across predictive modelling, geospatial analysis, and commercial analytics while collaborating closely with stakeholders across the business. Key Responsibilities • Build and deploy predictive models using Python and machine learning techniques • Conduct exploratory analysis across transport and mobility datasets • Perform geospatial analysis to understand customer journeys and station catchment areas • Work with … Analysts across the data function Key Details • Salary: Up to £52k • Working model: Hybrid – 2–3 days per week (near Waterloo Station) • Tech stack: Python, SQL, Azure, Microsoft Fabric, Power BI • Visa sponsorship: Not available Interested? Please apply below. ...

Senior Software Engineer C++ (Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency, Backend) ***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 … your thinking, then my client could be the ideal place for you to develop your career. Benefits (not exhaustive list): Senior Software Engineer C++ (Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency, Backend) Competitive salary 25 days annual leave - not including bank holiday Private medical insurance Flexible working hours ...

implement LLM-powered applications for enterprise clients • Build RAG pipelines and AI workflows integrating enterprise data • Develop production APIs and backend services in Python • Implement evaluation frameworks and monitoring for AI systems • Optimise AI systems across latency, cost, and performance • Contribute to solution architecture within cross-functional delivery squads … Details • Salary: £75,000 – £90,000 • Working model: Hybrid (2–3 days per week in Central London) • Tech stack: Python, LLM APIs, RAG architectures, vector databases, agent frameworks, cloud platforms (AWS/GCP/Azure) • Visa sponsorship: Not available Interested? Please apply below. ...

years of experience building and shipping production software (full-stack or backend) Strong programming skills in at least one modern language (e.g., Python, TypeScript, JavaScript) Ability to thrive in early-stage, fast-paced, and high-uncertainty environments Excellent communication and collaboration skills Demonstrated curiosity and drive to learn through experimentation … Preferred: Familiarity with tech stack: Next.js, React, TypeScript, Python, FastAPI, Postgres, Redis Experience with cloud infrastructure (AWS, GCP) Exposure to or experience with foundation models or Generative AI (LLMs, RAG, fine-tuning, agents, evals, AI IDE, etc.) Experience working directly with users to iterate on products Benefits Early equity ...

Python, Macro, Fixed Income, Systematic, APIs McGregor Boyall are partnered with a leading multi-strat hedge fund: We're looking for someone to with with PMs to build live trading tools, APIs and integrate quant analytics models to support risk management, pricing, backtesting and trade lifecycling click apply for full ...

operational use cases. Write efficient, production-grade SQL to build data pipelines and transformations. Develop and maintain data workflows and automation scripts in Python . Collaborate with analysts, engineers, and stakeholders to deliver high-quality data solutions. (Optional but highly valued) Contribute to our infrastructure as code efforts using tools … data roles, ideally transitioning from Data Analyst to Data Engineer . Proven expertise in SQL and building complex data models. Strong proficiency in Python for data processing, ETL, and workflow automation. Experience with cloud data platforms (Snowflake experience highly desirable). Exposure to or experience with Terraform or similar infrastructure ...

research. What You'll Be Doing Designing and delivering optimisation and ML models (linear/mixed-integer programming, heuristics, supervised/unsupervised learning) in Python, from prototype to production Building robust, automated data pipelines and integrating models into cloud-based deployment pipelines with CI/CD Owning features … stakeholders and contributing to roadmap and feature prioritisation What We're Looking For Strong operational research and optimisation background - this is a must Fluent Python, with hands-on experience of scikit-learn, pandas, numpy, Gurobi or similar OR packages Production ML/optimisation software experience - you've shipped models that ...

Linux Enterprise Server (SLES) environments. • Monitor systems, troubleshoot issues, and optimise performance. • Ensure system security and compliance with industry standards. • Automate tasks using Bash, Python, or Perl scripts. • Design, deploy, and manage Linux workloads in Azure. • Implement and manage virtual networks, storage, and Azure resources. • Ensure high availability and disaster … SLES. • Hands-on SAP HANA administration and optimisation experience. • Proficiency with Microsoft Azure, including ARM templates, Azure CLI, and PowerShell. • Strong scripting skills (Bash, Python, Perl) for automation. • Experience supporting large-scale enterprise environments. • Excellent problem-solving and collaboration skills. • SUSE or Microsoft Azure certifications are a plus. Apply today ...

optimisation. Collaborate with cross-functional teams including product, design, and data science to deliver innovative, customer-focused solutions. Work with modern technologies such as Python, Django, Cloud Firestore, BigQuery, and Elasticsearch to deliver scalable, reliable software. Contribute to continuous improvement by identifying opportunities to enhance system architecture and code quality. … Degree in Computer Science or equivalent industry experience. 3+ years' experience in backend software development within a fast-paced, agile environment. Strong proficiency in Python (or similar modern backend language) and experience building RESTful APIs or microservices. Solid understanding of data structures, algorithms, and software design principles. Experience with cloud ...

London 4 or 5 days a week on site Existing SC or DV Clearance is required National Security Sector Tech: JAVA/C++/Python - or Devops/Data Background An exciting opportunity has arisen for a Software Engineer to join a cutting-edge team developing impactful, mission-driven technology. … projects from initial concept through to delivery Analytical thinker who can decompose challenges and deliver iterative value Preferred Background Experience using Java, C++, or Python Understanding of data-intensive systems, backend services, or cloud-based platforms Familiarity with regulated, high-security, or mission-critical development contexts Confidence working in research ...