26 to 50 of 172 Senior Developer Jobs in London

About the Role We're looking for a Senior Developer to join SAL and help shape the future of our products. You'll work closely with our Head of Development to design and build the next generation of our platform while continuing to enhance and support our existing ...

Senior AI Developer Reading Hybrid £85k We're seeking an experienced software engineer to design and deliver AI-powered applications using modern development frameworks, cloud technologies, and large language models. You'll work on customer-facing projects, developing scalable, production-ready solutions while helping establish best practices ...

Role : Senior Quant Developer Client : London’s most selective quantitative investment fund Compensation : Highly competitive with significant performance-based upside Location: London Overview We are partnering with one of London’s most selective and highest-performing quantitative investment funds to appoint a Senior Quant Developer … high-performance software development — with code that moves rapidly from prototype to production and directly influences trading performance. The Role As a Quant Developer, you will work at the intersection of quantitative research, data engineering, and high-performance software development. You will be responsible for ensuring code moves rapidly ...

Senior Mobile App Developer A leading retailer are looking for a Senior Mobile App Developer to join their Mobile Team to contribute to the development and evolution of their Mobile App. As the Senior Mobile App Developer, you will be responsible for building … Android versions of the app, ensuring it delivers a pixel-perfect, performant, and luxury-aligned experience for customers. You will be a high-performing developer who thrives on clean architecture, elegant code collaborative delivery whilst working as part of an Agile cross-functional team. Skills and Experience * Strong proficiency ...

/2026 Business Area: Markets Pre Trade Area of Expertise: Technology Contract: Permanent Reference Code: JR-0000121511 Join the company as an Equity Finance Senior Developer and take a hands‐on leadership role in shaping the architecture of our Prime Brokerage and Capital Markets platforms. You will design … using Java and Kafka, define cloud and container strategies with Docker and Kubernetes, and collaborate closely with managers and stakeholders. This role suits a senior technologist who combines strong coding expertise with architectural vision, mentorship, and a focus on secure, high-performance solutions. To be successful, you should have ...

Senior Backend Developer Full-time Inside IR35 Hybrid 1 office day London Farringdon office address: 47-53 Charterhouse St, London, EC1M 6PB Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at senior levels … systems and extensive datasets. Foster close collaboration with our Product, Data, Front-end, Platform, and Security teams. Knowledge and Skills: Demonstrated expertise as a Senior Backend Developer. Proficiency in Python as your primary language, or willingness to adapt. Hands-on experience with RESTful APIs and/or GraphQL. Proficiency ...

company is seeking a Senior Developer Experience Engineer to accelerate software development by building tools, services and paved roads for engineers. You will own parts of the development lifecycle, from creating new services to testing, deployment, observability and production operation. You will join an established Platform team, collaborating ...

Senior Power BI Developer Central London (Hybrid Working) Salary up to £80,000 + Private Medical Method Resourcing are working with an innovative and fast-growing technology company that is transforming the way organisations use data to drive strategic decision-making. As they continue to scale, they … looking to hire an experienced Senior Power BI Developer to take ownership of their enterprise reporting environment and play a key role in shaping their business intelligence capability. This is an excellent opportunity for a highly skilled Power BI professional who enjoys working across the full BI lifecycle ...

Position: Senior Salesforce Developer Employment Type: Contract Start: ASAP (August/September 2026) Duration: 12 Months Location: London, UK (Hybrid - 3 days p/w office) Language(s): English Focus on SAP is a specialist SAP and ERP Recruitment organisation offering both permanent and contract staffing solutions … they serve. For you, this means working on challenging projects that demand innovation, collaboration, and thought leadership . Role – We are seeking an experienced Senior Salesforce Developer with strong expertise across Salesforce Service Cloud , Agentforce , and Salesforce Data Cloud to design, develop and deliver scalable enterprise CRM solutions. ...

Senior Software Developer 12 month contract £650 per day (inside IR35) Hybrid (London) - 2 days per week onsite This role is responsible for the design, development, delivery, and ongoing improvement of soft-ware solutions within a secure, government-focused environment. The successful candidate will contribute to building resilient ...

Title: Senior Java Developer Location: Bromley ( 3 days in office is essential) Contract: 12 months with possible extension Rate: Highly competitive Status : Inside IR35 Working pattern: Full time We're looking for an experienced Senior Java Developer to join a global technology team delivering client-facing … India. Current team members will provide support to enable you to familiarise yourself with the relevant functional aspects of the development role." Requirement: Java Developer with strong hands on expertise in building scalable Java applications, working in Agile teams. Develop, enhance and support a range of critical applications built ...

Senior Backend PHP Developer £500 per day (12 Months+/Option of working from Remote/Outside IR35) Seasoned PHP developer to work on a new Greenfield backend REST API for the transport industry and help implement it. You will be working alongside a Senior ...

## Senior Fullstack Developer — Java or Kotlin, React and TypeScriptApplylocations: London: Manchestertime type: Full timeposted on: Posted Todayjob requisition id: JR100892Founded in Switzerland in 1968, Zühlke is owned by its partners and located across Europe and Asia. We are a global transformation partner, with engineering and innovation … 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 is a backend ...

Senior C++ Developer Permanent | Fully Remote | Negotiable Salary + Significant Equity From Oxford research to securing the connected world Nine years ago, a small UK technology team working alongside researchers at the University of Oxford set out to solve a problem most of the world didn … into commercially relevant security technology with the potential for global application. Now the team is growing again, and we are looking for two exceptional Senior C++ Developers who can operate where this technology really lives — deep in the network stack. The Role: Where Packets Become Trust This ...

Overview We’re seeking a future team member for the role of Senior Vice President, Senior Software Engineering, Developer Experience to join our Developer Experience (DevEx) team. This role is located in London. Responsibilities Lead, mentor, and manage a high-performing Build Engineering team, setting clear … direction and career growth paths. Oversee the architecture and implementation of BNY’s central build automation platform, ensuring high availability, reliability, and security. Create developer-friendly templates, quick start guides, and troubleshooting tools to help feature teams quickly create performant, transparent, and compliant build automation. Optimize developer workflows ...

global market pull, the company is accelerating toward becoming the category‐defining platform for debt markets worldwide. The opportunity We are looking for a Senior Developer Experience Engineer to help make software development at the company faster, simpler and safer. This is a software engineering role focused … service through to testing, deployment, observability and operating it in production. You will join an established Platform team and work alongside our existing Developer Experience Engineer. You will speak directly with engineers, understand where they are losing time or carrying unnecessary complexity, and build solutions that teams want ...

Role Overview We are seeking a Senior Java Developer to join our Core Platform Team. This role is critical to building and maintaining the scalable backend infrastructure of our Live Casino platform, ensuring it can support high‐concurrency gameplay, real‐time interactions, and a distributed microservices architecture. … Senior Java Developer, you will architect and develop backend systems that power our games, player management, reporting tools, and third‐party integrations. You will work closely with Product Owners, Frontend Developers, DevOps, and QA to ensure smooth, efficient, and secure platform operations. Key Responsibilities Design and implement backend ...

title: Senior Java Developer Corporate Title: Associate/VP Department: Global Execution Services – Instinet Crossing Technology Location: London (Hybrid) Company overview Nomura is a global financial services group with an integrated network spanning approximately 30 countries and regions. By connecting markets East & West, Nomura services the needs … technologies and has been an innovator at the forefront of the market's evolution. For more information, please visit www.instinet.com. 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 ...

testing, deployment, and maintenance of the production derivatives credit risk application, used for internal risk management and regulatory capital purposes. The Counterparty Credit Risk Senior Application Developer position is a senior role that will interface closely with Quant and Front Office technology teams to integrate pricing models … make evaluative judgements. Serving as advisor or coach to new or lower‐level developers. Exercising independence of judgement and autonomy. Acting as SME to senior stakeholders and/or other team members. Qualifications Expert in Python Ability to write clean, tested highly efficient code. Proven track record of developing ...

Senior Python Developer/Engineer (Python AWS) London/WFH to £130k Are you a Python technologist with experience of Front Office trading environments? You could be progressing your career on the Asset Management side of a global Japanese bank as they expand this product offering within … UK. As a Senior Python Developer, you'll design, develop and enhance high performance trading systems and clo click apply for full job details ...

work and life About the Role This is more than just a job, it’s an opportunity to lead, innovate, and grow. As a Senior Software Developer in Test , you’ll: Work with our clients to design, build, and implement cutting-edge automation frameworks and testing solutions. Lead … lookout for passionate, talented individuals who are ready to make an impact. Whether you’re an experienced automation tester or a developer with a flair for QA, we want to hear from you. #J-18808-Ljbffr ...

looking for a Senior Python Developer to join one of our public sector clients. Rate: up to £550 per day (inside IR35) Duration: 12 months Location: UK, remote working Public sector experience will be highly beneficial For full details regarding this Senior Python Developer role, please … apply here and we'll be in touch #Python engineer #Python developer #Python consultant #Python ...

Cerillion in London is seeking a Senior Developer to join our Software Engineering team. You will design, develop, and deliver enhancements to Cerillion’s core BSS/OSS products, mentor juniors, and collaborate with architects and cross-functional teams to ensure robust, scalable systems. The role focuses ...

Role: Senior Salesforce Developer Location: London Area – Hybrid Salary £70,000 - £85,000 + Bonus Love solving complex Salesforce challenges and looking for a step up in your career? We're supporting a highly respected Salesforce consultancy that's looking for an experienced Senior Salesforce Developer. This … projects This isn't just another development role... You'll join a consultancy that genuinely invests in its people, encourages new ideas and gives senior developers the freedom to influence technical direction rather than simply deliver tickets. We're looking for someone who has... 5 or more years ...

Senior Mobile App Developer A leading retailer are looking for a Senior Mobile App Developer to join their Mobile Team to contribute to the development and evolution of their Mobile App. As the Senior Mobile App Developer, you will be responsible for building ...