23 of 23 Permanent Senior Developer Jobs in the City of London

Senior Full Stack Developer/Engineer (Java Angular) London/WFH to £90k Are you full stack technologist? You could be progressing your career in a hands-on, impactful, Senior Full Stack Developer role, working on a "tech for good" product that is helping to drive efficiencies for the NHS, the core product is a highly … complex real-time shift rota application, hosted on AWS and available via the web or mobile device (iOS/Android). As a Senior Full Stack Developer you will play a crucial role in re-architecting and enhancing the scheduling platform to a Java and Angular codebase (from Ruby and TypeScript). You'll design and develop scalable … and build responsive, user friendly interfaces using Angular (v15+) as well as writing and optimising SQL database queries. You'll input into technical discussions and decision making, as a senior member of a small team where you'll be able to influence best practice and technology choices. Location/WFH: You'll join colleagues in the London, City based More ❯

Senior Full Stack Software Developer Tech : AWS Lambda, React with Next.js, TypeScript, Node.js, and Terraform Why? start-up financial services, revolutionising the industry Location : Hybrid - 3-4 days in the office (London) Salary : £80k - £95k + benefits Our Client A new UK-based financial services provider is launching a credit card offering aimed at delivering fair, flexible, and … user-friendly financial products to consumers. The organisation is committed to empowering individuals by enhancing their understanding and control of personal finance through clarity, intelligence, and technology. Senior Full Stack Software Developer - Responsibilities Collaborate with Product Owners to ensure that the technical roadmap aligns with the product vision. Actively participate in product planning meetings and provide technical input … Terraform. Provide technical guidance and mentorship to junior developers. Stay up-to-date with new technology trends, applications, and protocols. Contribute to the development of technical documentation and standards. Senior Full Stack Software Developer - Experience Required Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field, or equivalent experience Proven experience as a Full More ❯

Senior Software Developers specialising in trading systems required for an excellent client based in London. The successful Software Developer will join a extremely talented development team and you will be exposed to creating and maintaining our client's own applications based around a C#/.NET/SQL Server/ASP.NET universe. Many projects are greenfield projects and More ❯

Senior Software Developers specialising in trading systems required for an excellent client based in London. The successful Software Developer will join a small but extremely talented development team. You will be exposed to creating and maintaining our client's own applications based around a C#/.NET/SQL Server/ASP.NET universe. Many projects are greenfield projects More ❯

Dynamics 365 CRM & Power Platform Solution Architect/Senior Developer This role is perfect for someone with deep technical expertise, strong stakeholder engagement skills, and a passion for building impactful enterprise-grade solutions using Microsoft technologies. Hands-on expert focused on the end-to-end implementation of Dynamics 365 CRM , including solution design, customization, integration, deployment, and user More ❯

industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of $13+ billion. Role: Senior Oracle Developer – Oracle to .NET (C#) Migration Project About the Project We are modernising a long-standing enterprise system built on PHP and Oracle, transitioning to a modern More ❯

Senior .Net Developer/Software Engineer (Windows Desktop Trading Systems) London to £140k Are you a Senior .Net Developer with strong Windows desktop development skills combined with banking/financial services experience? You could be progressing your career at a Hedge Fund with over $10 billion under management. As a Senior .Net Developer you … desktop applications and design and implementation of scalable, service orientated architectures (SOA) but will also gain exposure to web applications using React and/or Angular. This is a senior, hands-on position, you'll collaborate with colleagues in the US and Canada and be the sole resource on these systems for the UK. Location/WFH: You'll … and cloud computing You have excellent communication and stakeholder management skills You're degree educated in Computer Science or similar discipline What's in it for you: As a Senior .Net Developer/Software Engineer you will earn a competitive package: Salary to £140k + bonus Pension and Private Healthcare Hybrid working (x3 days in London office) Impactful More ❯

Senior C# Developer/Software Engineer (Windows Desktop Trading Systems) London to £140k Are you a Senior C# Developer with strong Windows desktop development skills combined with banking/financial services experience? You could be progressing your career at a Hedge Fund with over $10 billion under management. As a Senior C# Developer you … desktop applications and design and implementation of scalable, service orientated architectures (SOA) but will also gain exposure to web applications using React and/or Angular. This is a senior, hands-on position, you'll collaborate with colleagues in the US and Canada and be the sole resource on these systems for the UK. Location/WFH: You'll … and cloud computing You have excellent communication and stakeholder management skills You're degree educated in Computer Science or similar discipline What's in it for you: As a Senior C# Developer/Software Engineer you will earn a competitive package: Salary to £140k + bonus Pension and Private Healthcare Hybrid working (x3 days in London office) Impactful More ❯

Senior Java Developer/Software Engineer London/WFH to £130k Are you a Java technologist who enjoys building systems from scratch? You could be progressing your career, in a senior, impactful role at a global prime broker that is replacing the legacy infrastructure used across capital markets with a new cloud-native clearing and custody system … designed for today's complex global markets. The company is experiencing great success and is expanding into the UK. As a Senior Java Developer you will take ownership of building a brand new Equity SWAPS platform for the UK, primarily using Java with a focus on backend development but also with some React UI work. You'll be … an understanding of Capital Markets, Prime Brokerage or Equity Swaps You are degree educated in Computer Science or closely related discipline What's in it for you: As a Senior Java Developer/Software Engineer you receive a competitive package: Salary to £130k Equity Pension Hybrid working Influential role at a growing company with excellent career progression and More ❯

Senior Developer - London - Hybrid - £100,000 About the Role: A leading UK-based corporate finance advisory firm is seeking a Senior Developer to join its growing Technology & Innovation team. This is a fantastic opportunity for a driven developer to lead and execute cutting-edge tech strategies, working with AI tools and modern platforms to deliver More ❯

Our client, a fast-growing FinTech organisation delivering innovative digital financial solutions, is seeking a highly skilled Senior React Native Developer to join their dynamic technology team. This is a key opportunity to play a leading role in the development and launch of a major new mobile app scheduled for release in September 2025. The successful candidate will … supportive, and fast-paced work environment. * Opportunity to play a key role in the launch of a major FinTech mobile app. Apply today to be considered for this fantastic Senior React Native Developer opportunity. Interviews are taking place shortly! Keywords: Senior React Native Developer, Mobile App Development, UI/UX, iOS, Android, Redux, RESTful APIs, GitHub More ❯

I'm looking for a Senior hands-on Developer with Data Engineering and AI experience to join the newly established Technology and Innovation function of a successful Financial Advisory firm in London. It's a hybrid role, with 3 days per week in their Central London office to collaborate with your team and the wider business. Having recently … embarked on a company-wide digital transformation programme, they are now looking for an experienced Developer to lead on the design and implementation of new AI solutions (e.g. custom GPTs and Chatbots), drive automation to improve the efficiency of business processes, and extract better commercial insight from a range of data sources to inform decision-making. As a Senior More ❯

Job Title: Senior Android Developer Location Hybrid: Mostly remote (Required to be in the London client office on an adhoc basis). Target Start Date: July 2025 Contract duration : 6 months (potential to extend) Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client … with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte. About the Project We are seeking an experienced Senior Android Developer to work with Public Sector/Government clients. The ideal candidate will have extensive experience in developing Android applications and will be responsible for designing, developing More ❯

Our client, a leading and fast-growing Fintech in Blackfriars, London is looking for an experienced Senior Level Python Developer. They specialise in delivering cutting-edge solutions that are transforming the industry and making financial services more accessible and efficient. The company fosters a collaborative and forward-thinking environment where new ideas are encouraged, and every team member is … growth. They also believe in maintaining a healthy work-life balance and encourage a collaborative team spirit throughout the organisation. Job Overview The client is seeking a highly skilled Senior Level Python Developer to join their dynamic team. In this role, you will design and develop high-quality software solutions and contribute to innovative fintech products. You will … up-to-date with the latest technologies and suggesting improvements for ongoing projects. Requirements Applicants should meet the following requirements: * Proven experience in Python software development (3+ years at Senior Level) * Strong development skills in Python and familiarity with frameworks/tools relevant to fintech. * Solid understanding of the software development life cycle and agile methodologies. * Strong problem-solving More ❯

Senior PHP Software Developer ?" City London The ideal candidate will have sound 5 to 10 years proven commercial experience with developing software with PHP and MySQL. Must have experience of working on a Linux server with good experience of database optimisation and caching technologies, such as Memcached, Redis or Varnish. Will also need to be comfortable working with More ❯

HCLTech is a global technology company, home to 219,000+ people across 54 countries, delivering industry-leading capabilities centered on digital, engineering and cloud, powered by a broad portfolio of technology services and products. We work with clients across all More ❯

Senior PHP Developer ?" City London The ideal candidate will have a minimum of 8 years commercial experience with PHP and MySQL working on a Linux server with good experience of Database Optimisation and Caching Technologies. You will sit just below the Tech Director and help perform some of the task that he does which are causing bottlenecks. You … will be working hand in hand with our passionate in-house developer team helping improve and grow, our high-end, scalable e-commerce platform. You will be expected to do development work, along with getting involved in spec writing, assisting PMs with project planning, code reviews, architecture overview and implementation and assisting with the Company road map. You could … either already be a Lead Developer/Development Manager etc. with full leadership over a development team. Required Skills: At Least 8+ years of Commercial Experience and Knowledge of: PHP MySQL, including database optimisation LAMP Linux MVC, ORM Unit Testing HTML CSS/XHTML JQuery Caching Technologies, such as MemCached, Redis or Varnish Ability to share and communicate ideas More ❯

Senior MS Dynamics Developer - Victoria London Our client is an international company seeking to recruit a Senior MS Dynamics Developer. The ideal candidate will have at least 5 years of proven experience working with and developing MS Dynamics. The key skills required include: MS Dynamics CRM Online 2016 Update 1 within the Cloud Hands-on experience with More ❯

Senior Analytics Engineer Location:UK (Hybrid working available) We are working with is a leading force in the UKs digital infrastructure, responsible for delivering some of the fastest broadband and most reliable mobile connectivity in the country. As one of the UKs largest businesses, it empowers millions of people and organisations by providing innovative telecommunications solutions that drive choice … a collaborative, high-performing environment where your expertise can make a real impact? If so, we want to hear from you. About the Opportunity Were looking for a seasoned Senior Analytics Engineer to join our dynamic Data Democratisation BI & Analytics team. In this pivotal role, youll help shape the future of self-service analytics across the business by building More ❯

Senior Salesforce Developer – FinTech – Up to £80,000 Synapri are working with a fast-growing FinTech organisation who are looking to hire a Senior Salesforce Developer on a permanent, full-time basis. This is an exciting opportunity to play a pivotal role as the sole Salesforce Developer, working closely with a wider Salesforce function to More ❯

Senior Golang Developer– Ironic Workflow Automation London based/Hybrid- 2 days a week Contract Type 3–6 months About the Role Looking for a skilled Golang contractor to join a key client to accelerate the development of their server provisioning workflows. The role focus on automating OS deployments to physical machines using the OpenStack Ironic Golang SDK. More ❯

A leading UK Bank are recruiting for a Senior Quant Algo Developer supporting the Equity Derivatives team building algorithmic volatility trading stack and markets facing analytics working alongside traders, developers, quants, compliance and risk teams. Responsibilities will include: Development and delivery of high-quality software solutions by using industry aligned programming languages, frameworks, and tools. Ensuring that code More ❯

A leading Bank are recruiting for a C++ Developer to help with designing, building and supporting automated trading systems across multiple asset classes. You will be part of a dynamic team of professionals driving the evolution of low-latency trading system collaborating with business representatives, quants and fellow developers. Responsibilities will include: Development and delivery of high-quality software More ❯