1 to 25 of 231 Permanent Senior Developer Jobs in London

Senior Software Developer Tech : AWS, NodeJS, TypeScript, JavaScript, ReactJS, React Native Why? scaling FinTech, revolutionising the industry Location : Hybrid - 1-2 days in the office (Central London) Our Client A new UK-based financial services provider is launching credit card, personal loans and insurance offerings 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 Software Developer -Responsibilities Design, develop, and maintain advanced applications. Collaborate with cross-functional teams to define, design, and ship new features. Optimize components for maximum performance across a vast array of web- capable devices and browsers. Maintain … the highest quality. Troubleshoot and debug to optimize performance. Provide code reviews, feedback, and mentorship to junior developers. Stay up-to-date with new technology trends, applications, and protocols Senior Software Developer -Experience Required Proven experience as a Full Stack Developer or similar role with a strong portfolio of projects. Expertise in Node.js and AWS Lambda for More ❯

Senior Full Stack Developer Tech : AWS, NodeJS, TypeScript, JavaScript, ReactJS, React Native Why? scaling FinTech, revolutionising the industry Location : Hybrid - 1-2 days in the office (Central London) Our Client A new UK-based financial services provider is launching credit card, personal loans and insurance offerings 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 Developer -Responsibilities Design, develop, and maintain advanced applications. Collaborate with cross-functional teams to define, design, and ship new features. Guide and develop the skills of junior engineers. Optimize components for maximum performance across … quality and speed. Troubleshoot and debug to optimize performance. Provide code reviews, feedback, and mentorship to junior developers. Stay up-to-date with new technology trends, applications, and protocols Senior Full Stack Developer -Experience Required Proven experience as a Senior Full Stack Developer or similar role with a strong portfolio of projects. Expertise in Node.js and More ❯

Senior Developer .NET - Fintech – Remote Senior Developer .NET wanted as our team is growing fast Calling highly motivated, bright candidates who are looking for a career at an exciting award winning FinTech firm Company: Wealth Dynamix Role: Senior Developer .NET Location: London Start Date: ASAP Would you like to join one of the fastest … a global leader in end-to-end CLM, Wealth Dynamix has offices and clients in three continents with headquarters in the UK. What is the role? The .NET Integration Developer will join the CLMi Engineering Team to design, build, and maintain integrations between the CLMi platform and external systems across the private banking ecosystem. Following the successful delivery of More ❯

Senior Go Developer 6 Months Contract London Hybrid or Fully Remote An exciting opportunity for a highly skilled Senior Go Developer to join a leading technology business on a contract basis. This organisation is recognised for its engineering excellence and is seeking a Senior Go Developer to help scale distributed systems and deliver high … performance solutions. In this role, the Senior Go Developer will design, develop, and implement data-intensive applications across the full engineering lifecycle. You’ll architect and deliver microservices-based systems using Go (Golang), AWS, Kubernetes, Docker, and Kafka, working closely with cross-functional teams to build scalable, reliable, and resilient platforms. You’ll also play a key role … in optimising system performance, improving reliability, and ensuring scalability, while contributing to code reviews, design discussions, and knowledge sharing across the engineering function. Senior Go Developer – Key Requirements: Strong commercial experience in backend development Advanced skills in Go (Golang), with proven expertise in AWS, Kubernetes, and Docker End-to-end software engineering experience, including system design and architecture More ❯

Senior C++ Developer (Python, SQL, Linux, Trading, FinTech, Financial Technology) ***This is a hybrid role, 2 days remote and 3 days in the office*** Our client actively encourages diversity, equality and inclusion within its workforce and welcomes applications from a diverse background, REC Solutions Limited does not discriminate in regards to age, gender, national origin, religion or any … other basis. An excellent opportunity has arisen for a Senior C++ Developerto join a friendly team my client are a well-established exchange (FinTech, Financial Technology) based in the City. My client are working with some cutting edge technologies, this is an excellent opportunity to join an innovative, forward thinking company within the FinTech/Financial services space. The … and diverse business backgrounds. If these sentiments align with your thinking, then my client could be the ideal place for you to develop your career. Benefits (not exhaustive list): Senior C++ Developer(Python, SQL, Linux, Trading, FinTech, Financial Technology) Competitive salary 25 days annual leave - not including bank holiday Private medical insurance Flexible working hours Company pension Group More ❯

Senior Full Stack Software Developer Tech : AWS, NodeJS, TypeScript, JavaScript, ReactJS, React Native Why? start-up financial services, revolutionising the industry Location : Hybrid - 1/2 days in the office (Central London) Our Client A new UK-based financial services provider is launching credit card, personal loans and insurance offerings 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 Design, develop, and maintain advanced applications. Collaborate with cross-functional teams to define, design, and ship new features. Guiding and develop the skills of junior engineers. Optimize … quality and speed. Troubleshoot and debug to optimize performance. Provide code reviews, feedback, and mentorship to junior developers. Stay up-to-date with new technology trends, applications, and protocols Senior Full Stack Software Developer - Experience Required Proven experience as a Senior Full Stack Developer or similar role with a strong portfolio of projects. Expertise in Node.js More ❯

Salesforce Senior Developer | Apex, LWC & REST APIs | Global Data Business The Role You’ll join a growing Enterprise Applications team as a Salesforce Senior Developer, helping shape, improve and expand a highly integrated Salesforce CRM that sits at the core of this global business. Working alongside Sales, Marketing, and Product teams, you’ll design, develop, and … Knowledge of Salesforce security and sharing settings Familiarity with source-based deployment strategies (Git, CLI, or DevOps Centre) Experience with unit and UI testing in Salesforce environments Salesforce Platform Developer I certification (Developer II is a plus) What You’ll Work With: Apex, LWC, Visualforce, SOQL REST/SOAP APIs and data integrations Git or similar version control … days and flexible Fridays Birthday day off Employee assistance program Travel loan scheme Charity days Free daily breakfast and year-round social events Hybrid working (London-based team) Salesforce Senior Developer | Apex, LWC & REST APIs | Global Data Business More ❯

Senior JavaScript Developer 3-4 days p/week in London Paying up to £80k Senior JavaScript Developer – Would you like the opportunity to work for a fast growing start-up who are on a mission to create an AI tutor to help learners? They’re currently building an all-in-one platform for aiding students … to achieve their full potential. AI is at the heart of everything they do, from their products to the way they work as a team. As a Senior JavaScript Developer, you will be joining a small team, where you will build, scale, and maintain high-quality fullstack applications while collaborating closely with product and design to deliver end … design, and AI. Key requirements: 5+ years of fullstack development experience. Strong skills in React, TypeScript Node AWS Experience integrating AI/ML via APIs If you’re a Senior JavaScript Developer who enjoys the idea of working in an EdTech Start-up, please apply. More ❯

Senior JavaScript Developer 3-4 days p/week in London Paying up to £80k Senior JavaScript Developer – Would you like the opportunity to work for a fast growing start-up who are on a mission to create an AI tutor to help learners? They’re currently building an all-in-one platform for aiding students … to achieve their full potential. AI is at the heart of everything they do, from their products to the way they work as a team. As a Senior JavaScript Developer, you will be joining a small team, where you will build, scale, and maintain high-quality fullstack applications while collaborating closely with product and design to deliver end … design, and AI. Key requirements: 5+ years of fullstack development experience. Strong skills in React, TypeScript Node AWS Experience integrating AI/ML via APIs If you’re a Senior JavaScript Developer who enjoys the idea of working in an EdTech Start-up, please apply. More ❯

Senior Frontend Developer | Securing GenAI | Up to £130,000 p/a + Equity Senior Frontend Developer - Typescript & React Helping organisations securely and safely adopt Artificiual Intelligence tools Up to £130,000 per annum + Equity We're partnered with a company bringing much needed security and data protection to AI. As the bubble continues to … not at risk. Having secured an impressive Series A round and built by the founders of a former unicorn in this space, they are looking to add an experienced Senior Frontend Developer to work on a number of exciting greenfield and upgrade projects to the platform. Strong proficiency in Typescript & React is required, and design experience (Storybook/… etc) and cybersecurity interest or experience is a bonus, but not a must have. Interested in finding out more? Apply within or reach out to James for more information. Senior Frontend Developer | Securing GenAI | Up to £130,000 p/a + Equity More ❯

Senior Frontend Developer | Securing GenAI | Up to £130,000 p/a + Equity Senior Frontend Developer - Typescript & React Helping organisations securely and safely adopt Artificiual Intelligence tools Up to £130,000 per annum + Equity We're partnered with a company bringing much needed security and data protection to AI. As the bubble continues to … not at risk. Having secured an impressive Series A round and built by the founders of a former unicorn in this space, they are looking to add an experienced Senior Frontend Developer to work on a number of exciting greenfield and upgrade projects to the platform. Strong proficiency in Typescript & React is required, and design experience (Storybook/… etc) and cybersecurity interest or experience is a bonus, but not a must have. Interested in finding out more? Apply within or reach out to James for more information. Senior Frontend Developer | Securing GenAI | Up to £130,000 p/a + Equity More ❯

Senior Developer Leading Design & Build Workspace Specialist | London A market-leading design & build firm, established for 20+ years and recognised as the UK’s top name in high-end office fit out, is looking for a highly skilled Senior Developer to join their growing IT function. With a central London headquarters and regional presence across the More ❯

Senior C# Developer/Software Engineer (C# .Net) London onsite to £150k Opportunity to progress your career in a senior, hands-on C# Developer role at a global Asset Manager with c$3 million under management. As a Senior C# Developer within the trading engine team you'll collaborate to design and develop real … You are collaborative with excellent communication and stakeholder management skills You are degree educated in Computer Science or similar technical discipline What's in it for you: As a Senior C# Developer/Software Engineer you will receive a competitive package: Salary to £150k Bonus paid every six months based on personal performance (10-25%) Professional development Pension … Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this Senior C# Developer/Software Engineer (C# .Net) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from More ❯

LocationBloomsbury Square, London, United Kingdom# Senior Java Developer at N Consulting LtdLocationBloomsbury Square, London, United KingdomSalary£400 - £450/dayJob TypeContractDate PostedSeptember 12th, 2025Apply NowWork mode: Hybrid, Office location will be Bishopsgate, London Contract duration: 6 months Location: London - JOB DETAILS Role Title: Senior Developer We are seeking a highly skilled and experienced Senior Developer 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 ❯

Senior Full Stack Developer Hybrid - Work from Home with occasional travel to London (First week in London for induction) Permanent Up to 95,000 + Excellent Benefits HBG Recruitment is proud to partner with a leading British media institution , home to some of the UK's most recognisable brands. They're expanding their digital development team and are … now looking for a Senior WordPress Full Stack Developer to play a key role in building, optimising, and maintaining high-traffic media platforms that reach millions of readers daily. What's in it for you Competitive salary up to 95,000 per annum Permanent position with career development opportunities 25 days' holiday (rising each year to 30) Life … 3x your basic salary Discounts on online shopping, dining, and more Onsite perks : gym, canteen, nurse & GP clinics Hybrid working with occasional London meet-ups Your Impact As a Senior WordPress Full Stack Developer, you'll: Lead the maintenance and feature development of enterprise-level WordPress sites across multiple brands. Build and maintain shared plugins and reusable microservices More ❯

Senior Full Stack Developer Hybrid - Work from Home with occasional travel to London (First week in London for induction) Permanent | Up to £95,000 + Excellent Benefits HBG Recruitment is proud to partner with a leading British media institution , home to some of the UK's most recognisable brands. They're expanding their digital development team and are … now looking for a Senior WordPress Full Stack Developer to play a key role in building, optimising, and maintaining high-traffic media platforms that reach millions of readers daily. What's in it for you Competitive salary up to £95,000 per annum Permanent position with career development opportunities 25 days' holiday (rising each year to 30) Life … 3x your basic salary Discounts on online shopping, dining, and more Onsite perks : gym, canteen, nurse & GP clinics Hybrid working with occasional London meet-ups Your Impact As a Senior WordPress Full Stack Developer, you'll: Lead the maintenance and feature development of enterprise-level WordPress sites across multiple brands. Build and maintain shared plugins and reusable microservices More ❯

Senior Full Stack Developer Hybrid - Work from Home with occasional travel to London (First week in London for induction) Permanent | Up to £95,000 + Excellent Benefits HBG Recruitment is proud to partner with a leading British media institution , home to some of the UK's most recognisable brands. They're expanding their digital development team and are … now looking for a Senior WordPress Full Stack Developer to play a key role in building, optimising, and maintaining high-traffic media platforms that reach millions of readers daily. What's in it for you Competitive salary up to £95,000 per annum Permanent position with career development opportunities 25 days' holiday (rising each year to 30) Life … 3x your basic salary Discounts on online shopping, dining, and more Onsite perks : gym, canteen, nurse & GP clinics Hybrid working with occasional London meet-ups Your Impact As a Senior WordPress Full Stack Developer, you'll: Lead the maintenance and feature development of enterprise-level WordPress sites across multiple brands. Build and maintain shared plugins and reusable microservices More ❯

Senior Backend Developer (C#/.Net) | Brand New Trading Payments Desk | £130,000 + Bonus + Benefits | London Hybrid I am looking for a Senior Backend Engineer with a .Net (C#) focus for a Trading House that build cross asset trading systems. The FinTech are building from the ground up and currently expanding their team to work … on a completely greenfield build, payments platform. As a Senior Backend, your role will be to come in and build out a new Payments platform working very closely with another engineer to redesign parts of the system and lead from the front in terms of the build. Responsible for developing new features for the public website and client portal. … This Senior Backend developer role is paying up to £130,000 + bonus + benefits 📍Located in London City, St Paul's, with 3 days per week from the office 🧑.Net, C#, .Net Core Responsibilities of the Senior Backend Developer: Designing, coding, and testing all components of modern web applications. Contribute to the overall architecture and More ❯

Senior Backend Developer (C#/.Net) | Brand New Trading Payments Desk | £130,000 + Bonus + Benefits | London Hybrid I am looking for a Senior Backend Engineer with a .Net (C#) focus for a Trading House that build cross asset trading systems. The FinTech are building from the ground up and currently expanding their team to work … on a completely greenfield build, payments platform. As a Senior Backend, your role will be to come in and build out a new Payments platform working very closely with another engineer to redesign parts of the system and lead from the front in terms of the build. Responsible for developing new features for the public website and client portal. … This Senior Backend developer role is paying up to £130,000 + bonus + benefits 📍Located in London City, St Paul's, with 3 days per week from the office 🧑.Net, C#, .Net Core Responsibilities of the Senior Backend Developer: Designing, coding, and testing all components of modern web applications. Contribute to the overall architecture and More ❯

Senior Developer | Power Platform | Azure Integration | Hybrid in London | £80,000 PLEASE READ: You must be eligible for NPPV Level 2 or willing to undergo similar vetting. The Role: This is a fantastic opportunity to take full technical ownership of enterprise-scale solutions built across Microsoft Power Platform and Azure. You'll shape the architecture, define security and … decisions to both technical and business stakeholders. Nice to Have: * Experience working within public sector or other high-compliance environments. Please apply or reach out to for more information. Senior Developer | Power Platform | Azure Integration | Hybrid in London | £80,000 RSG Plc is acting as an Employment Agency in relation to this vacancy. More ❯

Senior Developer | Power Platform | Azure Integration | Hybrid in London | £80,000 PLEASE READ: You must be eligible for NPPV Level 2 or willing to undergo similar vetting. The Role: This is a fantastic opportunity to take full technical ownership of enterprise-scale solutions built across Microsoft Power Platform and Azure. You'll shape the architecture, define security and … decisions to both technical and business stakeholders. Nice to Have: * Experience working within public sector or other high-compliance environments. Please apply or reach out to for more information. Senior Developer | Power Platform | Azure Integration | Hybrid in London | £80,000 RSG Plc is acting as an Employment Agency in relation to this vacancy. More ❯

Senior TM1 Developer - IBM Planning Analytics 12 Months - Fixed Term Contract - Potential to Extend Circa £85k - £95K + Benefits Package 📍 Hybrid - Central London or Oxfordshire MUST be Eligible to work in the UK - Cannot provide sponsorship Global organisation seeking to secure a Senior TM1 Developer this is a hands-on role. Will own & develop IBM Planning … Month Period. Keywords: TM1, IBM Planning Analytics, Turbo Integrator (TI) Scripting, TM1 Rules, TM1 Development Lifecycle, Power BI, Alteryx, Finance, FP&A, Commercial teams, TM1, IBM Planning Analytics, TM1 Developer, Senior TM1 Developer, TM1, IBM Planning Analytics, Oxfordshire, London, Hybrid, 12-Month Fixed Term Contract, T6/MN/1299446. More ❯

Senior TM1 Developer - IBM Planning Analytics 12 Months - Fixed Term Contract - Potential to Extend Circa £85k - £95K + Benefits Package 📍 Hybrid - Central London or Oxfordshire MUST be Eligible to work in the UK - Cannot provide sponsorship Global organisation seeking to secure a Senior TM1 Developer this is a hands-on role. Will own & develop IBM Planning … Month Period. Keywords: TM1, IBM Planning Analytics, Turbo Integrator (TI) Scripting, TM1 Rules, TM1 Development Lifecycle, Power BI, Alteryx, Finance, FP&A, Commercial teams, TM1, IBM Planning Analytics, TM1 Developer, Senior TM1 Developer, TM1, IBM Planning Analytics, Oxfordshire, London, Hybrid, 12-Month Fixed Term Contract, T6/MN/1299446. More ❯

Role: - Power Platform Senior Developer Job Summary – Design, develop Power Automate workflows including the creation of triggers, actions, conditions, and loops to automate business processes. Create and configure connectors and integrations between various systems and applications to enable data flow and automation. Power Shell scripting is preferred as well. Also, we should have experience to work on remediating … to ensure compliance with the Power Platform Governance Framework, improve operational readiness, and enhance platform sustainability. Years of experience needed – Relevant 6-8+ years of Experience (Power Platform Senior Developer) Technical Skills 2. Scope of Work 2.1 For all PowerApps/Flows/Copilots Studio Agents/Pages Ownership Validation Identify and document owners, business purpose, LOB More ❯