251 to 275 of 389 Senior Developer Jobs in London

Senior Risk IT Developer - Commodity Trading - London - Full Time Permanent We’re partnering with a global leader in commodity trading, to find an exceptional Senior Risk IT Developer for their Risk IT team. This is a rare opportunity to help architect a next-generation, cloud-native risk platform from the ground up, with a focus on More ❯

Senior Risk IT Developer - Commodity Trading - London - Full Time Permanent We’re partnering with a global leader in commodity trading, to find an exceptional Senior Risk IT Developer for their Risk IT team. This is a rare opportunity to help architect a next-generation, cloud-native risk platform from the ground up, with a focus on More ❯

Senior iOS Engineer (SDK & App) Hybrid – 1 day/week in Central London | UK-based | Permanent Are you an experienced iOS developer passionate about building scalable apps and SDKs that truly make a difference? A fast-growing, well-funded tech company in Fintech space is looking for a Senior iOS Engineer to join their high-impact mobile More ❯

Senior iOS Engineer (SDK & App) Hybrid – 1 day/week in Central London | UK-based | Permanent Are you an experienced iOS developer passionate about building scalable apps and SDKs that truly make a difference? A fast-growing, well-funded tech company in Fintech space is looking for a Senior iOS Engineer to join their high-impact mobile More ❯

Senior iOS Engineer (SDK & App) Hybrid – 1 day/week in Central London | UK-based | Permanent Are you an experienced iOS developer passionate about building scalable apps and SDKs that truly make a difference? A fast-growing, well-funded tech company in Fintech space is looking for a Senior iOS Engineer to join their high-impact mobile More ❯

Senior Salesforce Developer – Permanent - Up to £70,000 + benefits Remote in the UK – once a month travel to Farnborough or London My client is a an extremely successful SAAS scale up that are looking for a talented Senior Salesforce Developer to join their growing team, focusing on the development and evolution of key operational systems … Contribute to the entire development pipeline, from coding to production. Drive continuous improvement in performance, code quality, and team knowledge sharing. What are we looking for? Experienced Salesforce application developer with a strong engineering background. Extensive Salesforce development experience, particularly with Marketing Cloud, Lightning Platform, and associated technologies (Pardot, JavaScript, Apex). Familiarity with the Salesforce ecosystem and integration More ❯

Senior Salesforce Developer | SaaS House £75,000 per annum + 10% bonus + private health insurance 3 days a week in the office (non-negotiable; Central London ) SUPER cool client I'm working with a well-established SaaS house that is the Google and Amazon of their market niche and has grown steadily over the past five years. … Join a growing technology function where innovation, problem-solving, and collaboration are at the heart of everything. They're looking for a Senior Salesforce Developer to come in and work alongside another senior to drive the platform forward, try out new tooling, build new POCs and the super cool thing that you'll be working with due … in a simplistic manner Passionate about staying up to date with Salesforce platform developments. This role does not accept applicants outside of the UK, nor does it offer sponsorship Senior Salesforce Developer | SaaS House More ❯

Senior Salesforce Developer | SaaS House £75,000 per annum + 10% bonus + private health insurance 3 days a week in the office (non-negotiable; Central London ) SUPER cool client I'm working with a well-established SaaS house that is the Google and Amazon of their market niche and has grown steadily over the past five years. … Join a growing technology function where innovation, problem-solving, and collaboration are at the heart of everything. They're looking for a Senior Salesforce Developer to come in and work alongside another senior to drive the platform forward, try out new tooling, build new POCs and the super cool thing that you'll be working with due … in a simplistic manner Passionate about staying up to date with Salesforce platform developments. This role does not accept applicants outside of the UK, nor does it offer sponsorship Senior Salesforce Developer | SaaS House More ❯

Senior Python Developer Permanent £80,000- £90,000 (doe) London – Hybrid Seeking an experienced Senior Python Developer for a Permanent role based in central London.Hybrid working with the expectation of 3 days/week on site in London . Immediate start, ideally Summer 2025. A chance to work with a leading digital transformation business on large More ❯

Senior Salesforce Developer | SaaS House £75,000 per annum + 10% bonus + private health insurance 3 days a week in the office (non-negotiable; Central London ) SUPER cool client I'm working with a well-established SaaS house that is the Google and Amazon of their market niche and has grown steadily over the past five years. … Join a growing technology function where innovation, problem-solving, and collaboration are at the heart of everything. They're looking for a Senior Salesforce Developer to come in and work alongside another senior to drive the platform forward, try out new tooling, build new POCs and the super cool thing that you'll be working with due … in a simplistic manner Passionate about staying up to date with Salesforce platform developments. This role does not accept applicants outside of the UK, nor does it offer sponsorship Senior Salesforce Developer | SaaS House More ❯

Senior Python Developer Permanent £80,000- £90,000 (doe) London - Hybrid Seeking an experienced Senior Python Developer for a Permanent role based in central London.Hybrid working with the expectation of 3 days/week on site in London . Immediate start, ideally Summer 2025. A chance to work with a leading digital transformation business on large More ❯

Senior C++ Developer/Software Engineer (Linux SQL C++17) London/WFH to £110k Global-leading FinTech is seeking a Senior C++ Developer to take ownership of strategic enhancements on their core platform, as well as directly on bespoke client projects. The organisation is a pioneer in the field of cross-asset securities and derivatives post … business performance for their clients. This is a great opportunity to accelerate your career alongside established business and technology leaders, and gain/deepen your finance experience. As a Senior C++ Developer, you'll be responsible for designing and building unique technical solutions, meeting user requirements and contributing to the evolution of the cutting-edge platform. Not only … discipline Ideally you will have experience working in a financial services or trading environment although technical skills of far greater importance What's in it for you: As a Senior C++ Developer you will receive a competitive package: Salary to £110k Pension (to 9% contribution) Healthcare Volunteer/charity days Hybrid working Career development and training Apply now More ❯

HTML5 Games Developer - Pixi.JS £60,000-£75,000 Oxford – Flexible/Remote Harvey Nash have partnered with a global business well established within the online gaming/gambling industry who have ambitious growth plans. The company have a wide array of clients ranging from independent gaming studios to the world’s largest online casinos delivered into by teams across … UK, Canada, South Africa, and China. The successful Frontend HTML5 Developer will be a key player in producing 3 games a month! The main requirements of the role is to have excellent experience on well-structured frontend architecture. You don't need to have previous industry experience but being collaborative and confident working on multiple projects is important. The … role is at Senior level so there will be opportunities to take on additional responsibilities at lead level if that was to be of interest. Should you choose, this role will allow you to expand your leadership capabilities as you progress in the company. The team tend to go into the office once a month. The ideal skillset of More ❯

Senior Salesforce Developer Senior Salesforce Developer required by a leading professional body/non-profit in London. The role: This organisation has a dynamic technology environment and as the Senior Salesforce Developer you will play a key role in the ongoing development of the Salesforce platform. You will be seen as the Salesforce technical … capabilities. You will be responsible for application and database architecture, and will oversee implementations, integrations, and support. You will even get the opportunity to mentor and manage a Junior Developer and Salesforce Administrator. With a collaborative, friendly and stable team, this is an organisation that continually invests in its technology estate. You will have the opportunity to take ownership … and Business Analysts to produce accurate delivery estimates and manage the transition from analysis through to design and delivery. This is an exciting and challenging opportunity for a Salesforce Developer who is looking to make that next step in their career, be involved in a wide range of projects and take on responsibility for defining, designing and implementing Salesforce More ❯

Senior Salesforce Developer Senior Salesforce Developer required by a leading professional body/non-profit in London. The role: This organisation has a dynamic technology environment and as the Senior Salesforce Developer you will play a key role in the ongoing development of the Salesforce platform. You will be seen as the Salesforce technical … capabilities. You will be responsible for application and database architecture, and will oversee implementations, integrations, and support. You will even get the opportunity to mentor and manage a Junior Developer and Salesforce Administrator. With a collaborative, friendly and stable team, this is an organisation that continually invests in its technology estate. You will have the opportunity to take ownership … and Business Analysts to produce accurate delivery estimates and manage the transition from analysis through to design and delivery. This is an exciting and challenging opportunity for a Salesforce Developer who is looking to make that next step in their career, be involved in a wide range of projects and take on responsibility for defining, designing and implementing Salesforce More ❯

Base Salary: Up to £90,000 per annum + Equity Location: London (Farringdon), Hybrid in office 2 days a month We are seeking a talented Python Developer to join a pioneering AI start up automating the legal side of property transactions worldwide. Our mission is to leverage the latest in Generative AI and Large Language Models, placing us at … the forefront of advanced technology in this field. As a Senior Python Developer, you’ll own the end-to-end development of new features, collaborating with cross-functional teams and contributing directly to a product that transforms the way property is transacted globally. Ideal candidates will have: 4+ years of proven experience in Python, with experience in FastAPI More ❯

Base Salary: Up to £90,000 per annum + Equity Location: London (Farringdon), Hybrid in office 2 days a month We are seeking a talented Python Developer to join a pioneering AI start up automating the legal side of property transactions worldwide. Our mission is to leverage the latest in Generative AI and Large Language Models, placing us at … the forefront of advanced technology in this field. As a Senior Python Developer, you’ll own the end-to-end development of new features, collaborating with cross-functional teams and contributing directly to a product that transforms the way property is transacted globally. Ideal candidates will have: 4+ years of proven experience in Python, with experience in FastAPI More ❯

Role: Senior Java Developer (Algo/FX eTrading) London (Hybrid) £100,000 - £160,000 We are seeking a Senior Java Developer to join the Global Front Office Algo eTrading Development Team of a leading investment bank. This is an exciting opportunity to design, develop, and deliver high-performance technical solutions for a cutting-edge trading platform. … Responsibilities Be a hands-on Senior Developer, influencing project direction from the outset. Develop new connectivity and RFQ protocols, including portfolios, for the expansion of eTrading. Enhance the auto-quoting and algo framework for pricing, offering, aggressing, hedging, and quoting functionalities. Collaborate with global development teams located across London and India. Lead the engineering and delivery of the … such as pricing, quoting, hedging, and order management systems. Familiarity with container-based solutions and smart order routing systems. Why Join Us? If you're a highly skilled Java Developer with a passion for high-performance trading systems, we want to hear from you. Reasonable Adjustments: Respect and equality are core values to us. We are proud of the More ❯

Our client, a multinational software vendor are seeking a Senior Backend Developer to scale a modern, API-first platform used by buyers and suppliers worldwide. You'll work in a collaborative backend team focused on building and maintaining high-performance APIs and core business logic. The stack is MERN-based with a TypeScript Monorepo and GraphQL APIs. Tech More ❯

Our client, a multinational software vendor are seeking a Senior Backend Developer to scale a modern, API-first platform used by buyers and suppliers worldwide. You'll work in a collaborative backend team focused on building and maintaining high-performance APIs and core business logic. The stack is MERN-based with a TypeScript Monorepo and GraphQL APIs. Tech More ❯

Our client, a multinational software vendor are seeking a Senior Backend Developer to scale a modern, API-first platform used by buyers and suppliers worldwide. You'll work in a collaborative backend team focused on building and maintaining high-performance APIs and core business logic. The stack is MERN-based with a TypeScript Monorepo and GraphQL APIs. Tech More ❯

Senior .NET Developer with Software Security, Azure Lead Software Security Engineer with Development Background, DevSecOps, Mainly Remote Senior .NET Developer with Software Security, Software Security Engineer Lead is required to work for a fast-growing and exciting company based in Central London. However, this will mainly be remote. Please read in full before applying We need … someone with a Microsoft tech-stack background who has experience as a .NET Developer with Software Security experience, Azure DevSecOps Consultant or even a good old fashioned Unix/Linux Systems Administrator. We want someone with a development/some form of coding background who has blossomed into Software Security/Cloud Security engineer. We NEED for you to More ❯

Senior Integration Developer Location: London (Hybrid - 3 days on-site, 2 remote; flexibility for the right candidate depending on location) Contract Type: Fixed-Term Contract (18 months) Salary: Up to £70,000 About the Role We are looking for a Senior Integration Developer to join a high-performing team. This role is critical to ensuring seamless More ❯

Exciting opportunity for a Senior Endur Developer to join this Global Energy Company for a 6 -12 month initial long term contract. Deep/Complex Greenfield v25 Endur Implementation Experience. *Excellent Day Rates (Umbrella Company) *3 Days in London/2 Day Remote *Gas & Power Trading Knowledge *Commercial Reporting experience *Either: Front & Middle or Back Office Endur experience … Endur implementation, performing a key role from design through to build and delivery. *This will be a great learning and development opportunity for even the most experienced Endur Developers. *Senior Endur Developer that has experience in Endur platform enhancements/implementations and strong Core Java skills. This needs combining with a positive attitude and an ability to work More ❯

Exciting opportunity for a Senior Endur Developer to join this Global Energy Company for a 6 -12 month initial long term contract. Deep/Complex Greenfield v25 Endur Implementation Experience. *Excellent Day Rates (Umbrella Company) *3 Days in London/2 Day Remote *Gas & Power Trading Knowledge *Commercial Reporting experience *Either: Front & Middle or Back Office Endur experience … Endur implementation, performing a key role from design through to build and delivery. *This will be a great learning and development opportunity for even the most experienced Endur Developers. *Senior Endur Developer that has experience in Endur platform enhancements/implementations and strong Core Java skills. This needs combining with a positive attitude and an ability to work More ❯