151 to 175 of 333 Senior Developer Jobs in London

Senior Full Stack Developer (Kotlin, React) – Banking – London Daily rate: £500 – £700 (inside IR35) Duration: 6 – 12 months Hybrid: 3 days per week in office Start: ASAP We’re looking for a hands‐on engineer who thrives in a collaborative XP environment and enjoys working across the full ...

infrastructure engineers about networking issues or kernel tuning as well as reporting .NET garbage collector bugs to Microsoft! The Role We're looking for Senior Software Engineers to join our Joule Direct team, to help us build and improve our high-throughput, low-latency energy trading platform. ...

innovative and high-quality technology solutions while supporting the continued growth and development of our professional workforce. Role Overview: We are seeking an experienced Senior C++ Developer to lead the design and development of high-performance backend systems within our Game platform. This role combines hands-on engineering ...

work at the forefront of innovation, helping organisations transform and deliver high-quality, scalable solutions that truly matter. Overview We're looking for a Senior Software Developer to move a digital and cyber playbook for councils from its current build to an in-house service. The playbook gives ...

Blackstone seeks a Senior Quant Developer to join the BXTI Quantitative Research and Development team in London. You will build and implement models across Equity and Fixed Income, working with risk, portfolio, trading and data models. You will collaborate with Quant Analysts, PMs and Risk teams to deliver ...

Emergn seeks a Senior Python Developer to own a business-critical Python platform and help it grow. You will develop backend services and APIs using Python and Flask, and work with MongoDB, Celery, and data tools in a fast-moving, collaborative setting. You’ll join an international team ...

Scrumconnect Consulting in London is seeking a Senior Software Developer to move a councils playbook from WordPress to an in-house service. You will build a secure, accessible, and maintainable product that councils can contribute to after publication. You will own WordPress development (themes/plugins), ensure accessibility ...

Nomura Holdings, Inc. in London seeks a Senior Java Developer for the Rates Intraday Risk Technology team. You will work with Flow Rates desks and quants to translate complex requirements into robust server-side solutions. The role involves contributing to the architecture refresh and building APIs that provide ...

shaping the future of fintech – and we’re just getting started.Checkout.com is actively looking for an enthusiastic and talented Strategic Accounts, Senior Business Developer to join us as we accelerate our Enterprise development of Global Accounts from our offices in London. This is a fantastic opportunity to play … cross-functional teams of stakeholders (including Product, Solutions Engineering, and Legal) to ensure an aligned team effort when dealing and onboarding with key merchants.Assist senior leadership in shaping tailored solutions and product offerings for each merchant.Collaborate daily with our engagement team to ensure a strong understanding and alignment across ...

shaping the future of fintech – and we’re just getting started. Checkout.com is actively looking for an enthusiastic and talented Strategic Accounts, Senior Business Developer to join us as we accelerate our Enterprise development of Global Accounts from our offices in London. This is a fantastic opportunity … functional teams of stakeholders (including Product, Solutions Engineering, and Legal) to ensure an aligned team effort when dealing and onboarding with key merchants. Assist senior leadership in shaping tailored solutions and product offerings for each merchant. Collaborate daily with our engagement team to ensure a strong understanding and alignment ...

Senior Database and Analytics Developer (Access Mosaic) Location: Predominantly remote, UK based Rate: £266 per day Contract duration: 22 weeks Start date: 26 October 2026 End date: 28 March 2027 Hours: 37 per week IR35 status: Inside IR35 About the role We are recruiting a Senior Database … Analytics Developer to support a local authority with project delivery during a peak in workload. We are specifically looking for someone with specialist knowledge of The Access Group's Children's Services Mosaic data models and experience using them for data and analytics development for reporting purposes. This expertise ...

We are looking for a talented Python Engineer with hands-on experience building high quality, scalable server less applications. You will work closely with the Lead Engineer to design, build, and enhance the Digital Onboarding ...

client combines global reach with deep markets expertise to help our customers mitigate financial, regulatory, and reputational risk. The Role We are seeking a Senior Quantitative Developer (VP) to take a leading role in designing, building and validating our pricing models. This includes creating financial pricing libraries ...

client combines global reach with deep markets expertise to help our customers mitigate financial, regulatory, and reputational risk. The Role We are seeking a Senior Quantitative Developer (VP) to take a leading role in designing, building and validating our pricing models. This includes creating financial pricing libraries ...

Hunter Bond is seeking a Senior Quant Developer to build and optimize cross-asset trading systems. Based in London with remote options, you’ll deliver high-performance Python analytics, pricing models, and real-time risk checks within a production environment. You’ll collaborate with technology and trading teams ...

unified company, we're combining expertise to offer a full-service, frictionless parking solution for both businesses and consumers. About the role The Senior Fullstack Developer ships high-impact product features across JustPark's stack, working closely with product, design and other engineers to deliver value tocustomers. ...

.Net Developer Salary: £65K – £75K London – Hybrid At Data Idols, we are working with an innovation-led organisation using technology, AI, and digital products to drive large-scale engagement and solve complex societal challenges. They are now looking for a .Net Developer to take ownership of a core … product platform and support its evolution as the organisation scales. The Opportunity This is a hands‐on, senior role focused on maintaining and enhancing a core digital platform used to deliver interactive, real‐time experiences. You will be responsible for building new features, improving performance, and integrating AI capabilities ...

Insight Recruitment Group is seeking a Senior Ruby Developer to take ownership of architecture and contribute to the product's future. You will join a team of eight developers who value testing and code quality. The role offers opportunities to improve DevOps, backend, and build services, with flexibility ...

Java Developer – Low-Latency Trading Systems Location: London Working arrangement: Hybrid – 3 days per week in the office We are looking for a Java Developer with strong experience building low-latency, high-performance systems to support the expansion of an agency liquidity platform and delivery of projects across ...

Laravel is your tool of choice for building powerful backend systems, we want to meet you! We’re on the lookout for a senior backend developer to join the Trybe team to help us continue to grow the best software in the industry. Who is Trybe? Trybe ...

passionate about developing your career, while helping others along the way, come join the Broadridge team.We are excited to announce an opportunity for a Senior Full Stack Developer to join our organization as part of our AI Enablement Team.In this role, you will play a crucial role ...

brands in 8 countries and employees worldwide Homeowners have turned to us for 300 million home projects and counting Angi is seeking a Temporary Senior Salesforce Developer to join our Sales and Care Tooling team. In this role, you will design and implement functionality that supports our Sales … three times per day. Our guiding philosophy is "Salesforce flows first." Most business features are built by administrators using Flow. Engineers partner with senior administrators to maintain a coherent package architecture and to design and develop custom components where Flow isn't a fit. Technology Stack On the Salesforce ...

Angi in the United Kingdom is seeking a Temporary Senior Salesforce Developer to join our Sales and Care Tooling team. You will design and implement functionality that supports our Sales and Care organizations, and help integrate our Salesforce instance with a new global platform. You will work with ...

development of enterprise-scale Drupal 11 solutions that support people living with diabetes. This is an exciting opportunity for an experienced full-stack developer to influence architecture, mentor engineers, and drive innovative web experiences while working with Drupal, Salesforce integrations, CI/CD, and modern development practices … degree in Computer Science, Software Engineering, or related field (or equivalent practical experience). 5–7 years of professional experience as a Drupal developer, preferably in a senior or lead role. Strong proficiency in Drupal 9/10 APIs, PHP 8.x, Twig, HTML/CSS/SASS ...

Plugin development | Plugin Customization | COMPLETE PHP CUSTOMIZATIONS | Theme customization Senior PHP Developer Skills & Responsibilities Lead back-end development on client projects Design database schemas and APIs Review code and mentor junior developers Build plugin and theme customizations Improve performance and security of existing applications Requirements 4–5 years ...