101 to 125 of 276 Senior Developer Jobs in London

Senior Python Backend Engineer – Web Scraping Project 6-month contract | £500 per day | London | Hybrid working A specialist sports modelling and trading technology business is seeking a Senior Python Backend Engineer to join its platform team on an initial six-month contract. The role focuses on a business … Claude Code, Cursor and Codex . Contract details Initial six-month contract £500 per day Outside IR35 London-based hybrid working For a Senior Python Backend Engineer who wants to work at the sharp end of real-time trading technology, this is an opportunity to deliver a technically complex ...

client is seeking an experienced Power BI Developer to lead the design and delivery of business intelligence solutions that drive strategic decision-making across the organisation. Working closely with Finance, Commercial, Operations, and Executive stakeholders, you will transform complex data into meaningful insights through robust data models, dashboards … excellent opportunity for a commercially minded BI professional who enjoys partnering with stakeholders and influencing business decisions through data. Responsibilities of the Senior Power BI Developer/FP&A Role:- Design, develop, and maintain enterprise-level Power BI dashboards and reports. Create interactive visualisations and KPI dashboards ...

/IBM Planning Analytics Developer (Senior) – 12 Month FTC Location: Hybrid Client: Financial Services Salary: up to £80,000 This role is a 12-month fixed-term contract. The Role This role sits within a high impact finance systems team and will focus on developing and enhancing ...

Senior Integration Developer (IBM ACE/IIB) - Banking - London Location London, UK (Hybrid) Working Pattern: 8 days onsite per month, remainder remote Engagement: Umbrella company only RATE: £500 - £600 The Opportunity We are looking for an experienced Senior IBM App Connect Enterprise (ACE)/IBM Integration … Developer to join a highly skilled engineering team responsible for delivering and supporting enterprise integration and messaging solutions within a complex financial services environment. This is an excellent opportunity to work on business-critical systems, designing, developing and maintaining high-performance integration services that support large-scale transaction processing. ...

IR35 London/Hybrid (3 days on-site) Initial 6-Month Contract My client is a leading global financial services organisation seeking an experienced Senior Java Developer to join a large-scale enterprise technology programme. This is a senior technical role focused on leading backend application development ...

title: Senior Java DeveloperCorporate Title: Associate/VP Department: Global Execution Services – Instinet Crossing TechnologyLocation: London (Hybrid) Company overviewNomura is a financial services group with an integrated global network. By connecting markets East & West, we service the needs of individuals, institutions, corporates and governments through our four business divisions … trading technologies and has been an innovator at the forefront of the market's evolution. For more information, please visit .Role Overview:As a senior Java Developer in the Crossing Technology team, the main responsibility is to develop, maintain, and improve the performance of Instinet’s Crossing Systems ...

offer you the chance to do it on a global scale and play a real role in shaping our exciting journey.The roleAs a Senior Fullstack Developer, you will be a hands-on member of a high-performing engineering squad, building and operating business-critical digital services.This ...

chance to do it on a global scale and play a real role in shaping our exciting journey. The role As a Senior Fullstack Developer, you will be a hands-on member of a high-performing engineering squad, building and operating business-critical digital services. This ...

Senior Clojure Developer London, United Kingdom Posted 11 months ago Tech stack JavaScript ClojureScript Terraform Clojure Amazon AWS Python TypeScript GCP Full-stack React Java Experience and Skills A passion for developing and operating full stack production systems in Clojure, Kubernetes, and AWS or GCP. ClojureScript, JavaScript, TypeScript ...

looking for an experienced Senior WordPress Developer to join our growing development team. This is a hands-on technical role where you’ll be responsible for designing, developing and maintaining bespoke WordPress websites and web applications while mentoring junior developers and working closely with clients throughout the project … looking for someone who’s excited to learn and help shape how AI enhances software development within our business. As a senior member of the team, you’ll be expected to: Mentor junior developers Lead technical discussions Conduct code reviews Help establish development standards Work directly with clients Present ...

9fin is seeking a Senior Developer Experience Engineer to accelerate software development across the lifecycle, from new services to deployment and production operations. You will join the Platform team and collaborate with engineers to remove friction and raise quality. You will build and maintain internal tools, templates ...

working alongside a wider global team to efficiently develop cloud solutions following CICD best practices. We are looking for a highly skilled and experienced Senior Python Developer to join our dynamic team. The ideal candidate will be responsible for designing, developing, and maintaining scalable and efficient software systems … technologies. This role requires a deep understanding of Python and related technologies, as well as strong leadership and mentoring abilities. You will be a senior member of the development team with the ability to contribute as well as guide other members of the team towards the development of high ...

Title: Senior Database Developer (SQL) - Front office Trading Compensation: Up to £175k + Benefits + Bonus Location: London Client: Global Commodities Trading Firm The role A technology-driven commodities trading firm is seeking a talented SQL Developer to join its Front Office technology team, supporting a highly ...

United States Digital Space LLC is seeking an Equity Finance Senior Developer in London to lead the architecture and delivery of Prime Brokerage and Capital Markets platforms. You will design and build scalable, event-driven trading systems using Java and Kafka, and define cloud and container strategies with … Docker and Kubernetes. This senior technologist role requires strong coding expertise, mentorship and a strategic focus on secure, high-performance solutions within a hands-on leadership #J-18808-Ljbffr ...

Role ProfileThe Senior lead Scala Engineer will play a key role in the engineering and delivery of a critical market‐infrastructure service within the Equities platform, with a strong focus on AWS cloud‐native development. Reporting directly to the Senior Technical Delivery Engineer, Post Trade, the successful candidate … will be responsible for designing, implementing, and maintaining performant, resilient, and scalable backend services built predominantly in Scala.As a senior member of the engineering team, this individual will help shape technical direction, contribute to best-in-class engineering standards, and actively support the continued growth and evolution ...

Title: Senior C#/.NET Developer - Financial Services (Risk/Securities Lending) Location: London (Hybrid) Duration: 6 Months contract Job Description Role Overview We are seeking an experienced C#/.NET Developer to join a technology team supporting critical Financial Services platforms, with a strong focus ...

Senior Software Security Developer – Core Platform Services London About us PhysicsX is a deep-tech company with roots in numerical physics and Formula One, dedicated to accelerating hardware innovation at the speed of software. We are building an AI-driven simulation software stack for engineering and manufacturing across … boundaries of possibility. Our customers include leading innovators in Aerospace & Defense, Materials, Energy, Semiconductors, and Automotive. The Role We are recruiting for a Senior Software Security Developer within our Core Platform Services Team. You will be responsible primarily for writing secure code components that many teams will ...

Description: Job Title: Senior Java Developer Corporate Title: Up to Vice President Location: Bromley Company Overview : At the company, we are guided by a common purpose to help make financial lives better through the power of every connection. We do this by driving Responsible Growth and delivering ...

Senior Elite 3E Developer - Global Law Firm | VB.NET, XML, SQL, Azure DevOps £80k-£85k + 10% bonus + excellent benefits | City (60%) + Remote (40%) Join a world-leading law firm operating across 30 countries and play a pivotal role in transforming their global finance technology landscape. … looking for a Senior Elite 3E Developer who wants ownership, impact, and the chance to shape enterprise-grade solutions used across a major international organisation. If you're an experienced Elite 3E specialist who enjoys solving complex problems, building high-performance systems and influencing technical direction, this ...

Senior Software Developer - .NET (Fully Remote) Location: Fully Remote Salary: £50,000 to £60,000 plus strong wider benefits package About the role Our client, a digital consultancy delivering complex technology programmes across the public sector, are looking for a Senior Software Engineer to join multidisciplinary delivery ...

cloud services and data pipelines that power our kerbside platform, enabling us to onboard new datasets, support new products and scale internationally. Working alongside senior engineers and product leadership, you'll contribute to the evolution of our platform while developing your own technical expertise across cloud infrastructure, AI, geospatial … data and developer tooling. You'll be responsible for: Designing and building scalable backend services and APIs using C# .NET. Developing platform capabilities that support kerbside, parking, payments, mapping and mobility products. Building data ingestion and transformation pipelines that make it easier to onboard and standardise new datasets. Developing ...

Excellent opportunity for a Senior Software Developer to play a key role in architecting, developing, and enhancing our clients in-house trading and research systems. This is an opportunity to work on greenfield projects, influence architectural decisions, and directly impact systems that support real-world trading strategies. … senior member of the team, you will contribute both technically and strategically, helping shape development standards, performance optimisation, and system scalability. You will primarily work within a C# .NET SQL Server ecosystem, developing high-performance, reliable, and maintainable applications. Key Responsibilities Design, develop, and maintain high-performance applications ...

Excellent opportunity for a Senior Software Developer to play a key role in architecting, developing, and enhancing our clients in-house trading and research systems. This is an opportunity to work on greenfield projects, influence architectural decisions, and directly impact systems that support real-world trading strategies. … senior member of the team, you will contribute both technically and strategically, helping shape development standards, performance optimisation, and system scalability. You will primarily work within a C# .NET SQL Server ecosystem, developing high-performance, reliable, and maintainable applications. Key Responsibilities Design, develop, and maintain high-performance applications ...

Salesforce Developer — London, UK We are seeking an experienced Salesforce developer with strong expertise in the Banking domain who will oversee planning, execution and successful delivery of projects. Hybrid Working The places you work from day to day will vary according to your role, needs, and the business … sites, and your home, noting that you will be unable to work at home 100% of the time. Your Role We are seeking a Senior Salesforce Developer with deep expertise in Financial Services Cloud (FSC) to design, develop and implement complex Salesforce solutions. The ideal candidate will have ...

Accepting applications until: 28 August 2026Job DescriptionYour Role: Senior Java DeveloperWe’re looking for an experienced backend engineer with a passion for technical excellence and improving user experiences. You’ll join our DAX engineering team, working on our ad server platform and related products that power campaign delivery … scale. This role is based in our Holborn office with hybrid working as part of our Smart Working approach.As a Senior Java Developer at Global, you will:Work across the full lifecycle of our ad-serving products, from discovery and design through to delivery and optimisation. ...