25 of 25 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 - 2-3 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 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 ❯

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 ❯

Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at mid to senior levels who are passionate about crafting exceptional products. Initially it will be a five-month contract but there is potential for it to be extended. The role is Hybrid, with one day a week being … in large-scale systems and extensive datasets. * Foster close collaboration with our Product, Data, Front-end, Platform, and Security teams. Knowledge and Skills: * Demonstrated expertise as a Mid or Senior Software Engineer. * Proficiency in Python as your primary language, or willingness to adapt. * Hands-on experience with RESTful APIs and/or GraphQL. * Proficiency in version control tools like 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 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 ❯

Senior Java Engineer - Azure Migration (Financial Services) Location: London (Hybrid - 1 day per week onsite) Rate: Up to £650/day (Inside IR35) Start Date: ASAP Engagement: Consultancy - Financial Services Clients Overview A leading consultancy is seeking a Senior Java Engineer for a high-impact Azure migration programme within financial services. This role involves lifting and shifting a 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 ❯

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 AI Developer - Python - £80,000 - £100,000 - Hybrid - London Company Overview: My client is a trusted Financial Services provider located in the heart of London. They pride themselves on working with sectors that make a positive impact on society such as infrastructure, education and energy. At this organisation their people are prioritised as the centre of everything … function to drive growth over the next 5 years and you have the chance to be a key player in this transformation from the off. Role Overview: As a Senior Developer you will act as a rounded technologist to lead development on a range of different projects to greatly overhaul the organisations Data & AI functions. You will utilise More ❯

Senior Salesforce Developer | Hybrid/Remote | London | £65,000-£80,000 | No Sponsor VISA Job Description: Are you a skilled Salesforce Developer looking for an exciting opportunity to design and develop customized Salesforce solutions? Join our client's dynamic team and play a crucial role in enhancing user experience and supporting DevOps processes. Key Responsibilities: Design and … Integration Experience: Exposure to integrating Salesforce with external systems using MuleSoft. Soft Skills: Strong communication skills, collaborative, and a self-starter. Preferred Qualifications: Certifications: Platform App Builder or Platform Developer I or II Certifications. What We Offer: Competitive Salary: An excellent package is on offer, depending upon experience. Growth Opportunities: Opportunities for professional development and career advancement. Supportive Environment … A collaborative and supportive work environment. Senior Salesforce Developer | Hybrid/Remote | London | £65,000-£80,000 | No Sponsor VISA 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 ❯

Senior Microsoft Dynamics 365 & Power Platform Developer Location: London, UK Salary £80,000 per annum + benefits Nigel Frank are proud to be representing a leading national professional services firm that is investing heavily in digital transformation, including the rollout of a new CRM and client onboarding system. We’re currently seeking a Microsoft Dynamics 365 Solution Architect 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 C# Developer - Commodities Trading - Outside IR35 Exciting opportunity for an experienced senior developer to build on their experience in Commodities or similar trading development role in this successful Commodities Trading company. £750 - 800 per day Outside IR35 The Senior C# Developer will have significant prior experience as a Senior Software Engineer/… Senior Developer working as C# Developer in a Commodities trading environment where they will have gained knowledge of the full trade life-cycle and feel comfortable speaking directly to traders and senior stakeholders in the business as well as senior technical colleagues such as architects. Central London location, with Hybrid working expected. Very strong core 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 ❯

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 ❯