76 to 100 of 289 Senior Developer Jobs in London

Senior Java Developer

Location
Greater London, England, United Kingdom
Role: Principal/Senior Java Developer – Elite FinTech Rate: Up to £750 per day Location: London Working Pattern: Hybrid Contract: Contract The Role They are looking for an exceptional Principal/Senior Java Developer to join a high-calibre engineering team, working alongside some ...

Senior Backend Developer

Location
Greater London, England, United Kingdom
Waracle are looking for a Senior Developer for an exciting new role joining our world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation. We work with ambitious clients to help them solve their biggest business … seamlessly from strategy, design and delivery to operations. This is a Hybrid role working from the London office 2 days a week. As a Senior Develope r at Waracle, you will play a pivotal role in shaping robust, scalable systems while fostering an inclusive environment where everyone can thrive. ...

Senior Python Developer | £700/day inside IR35

Hiring Organisation
Akkodis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£700/day Inside IR35, Hybrid
Senior Python Developer - Finance London | Hybrid - 3 days per week £700/day Inside IR35 | 12-month contract Permanent/FTC options also available We're working on a number of new Senior Python Developer opportunities within a major Financial Services technology environment, supporting significant investment … term, with permanent opportunities up to £100,000 and 12-month FTC options up to £120,000 available. If you're a strong Python Developer with solid banking experience and you're looking for a sizeable programme where there is genuine investment in technology, this is well worth ...

Senior Python Developer - AI

Hiring Organisation
83zero Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
£70,000
Senior Python Developer - GenAI Salary: £60,000 - £70,000 plus benefits, perks and healthcare options Locations: London, Bristol, Manchester, Glasgow or Newcastle Job Type: Permanent | Hybrid/2 days per week onsite | Occasional travel to client sites Requirements: SC eligibility & full right to work in the UK required … sponsorship available) The Role: We're looking for hands-on Python Developers at Senior level who have experience building software and a practical understanding of Generative AI, LLMs and RAG. This is a coding-focused role for engineers who enjoy building real solutions. You'll use Python as your ...

Senior Software Developer

Location
Greater London, England, United Kingdom
through peer reviews and collaboration Contribute to a collaborative engineering culture focused on clean, efficient code and practical delivery Requirements Proven experience as a Senior Developer within a SaaS or enterprise software environment Strong hands-on expertise in C#, .NET/.NET Core, and SQL/ ...

Senior Java Developer

Location
Greater London, England, United Kingdom
delivering innovative and high-quality technology solutions while supporting the continued growth and development of our professional workforce. Role Overview: We are seeking a Senior Java Developer to join our Core Platform Team. This role is critical to building and maintaining the scalable backend infrastructure of our back … office system platform, ensuring it can support high-concurrency gameplay, real-time interactions, and a distributed microservices architecture. As a Senior Java Developer , you will architect and develop backend systems that power our games, player management, reporting tools, and third-party integrations. You will work closely with Product ...

Senior C++ Developer - Vice President

Location
Greater London, England, United Kingdom
Title: Senior C++ Developer - Vice President Job Code: 12392 Country: GB City: London Skill Category: IT\Technology Description Job title: Senior C++ Developer Corporate Title: Vice President Department: Latency Sensitive Electronic Trading (LSET) Location: London (Hybrid) Company overview Nomura is a financial services group with … globally based ensuring we are able to support our clients across the globe. Role Overview: We are looking for a C/C++ developer to join our low latency development team. The team provides industry leading low-latency trading services for our clients, utilising multiple technologies. The candidate will ...

Principal / Senior Java Developer

Location
Greater London, England, United Kingdom
Role Role : Principal/Senior Java Developer – Elite FinTech Rate: Up to£750 per day Location :London Working Pattern :Hybrid Contract :Contract They are looking for an exceptional Principal/Senior Java Developer to join a high-calibre engineering environment, working alongside some of the industry ...

Senior Software Developer in Test - Senior Consultant

Location
Greater London, England, United Kingdom
work and life About the Role This is more than just a job, it’s an opportunity to lead, innovate, and grow. As a Senior Software Developer in Test , you’ll: Work with our clients to design, build, and implement cutting-edge automation frameworks and testing solutions. Lead … lookout for passionate, talented individuals who are ready to make an impact. Whether you’re an experienced automation tester or a developer with a flair for QA, we want to hear from you. #J-18808-Ljbffr ...

Senior Java Developer - Credit Risk Technology, Vice President

Location
Greater London, England, United Kingdom
Senior Java Developer is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead applications systems analysis and programming activities. Team Background The Derivatives Credit Risk ...

Senior Python Quant Developer, London – Systematic Trading: UK-Based Applicants Only

Location
Greater London, England, United Kingdom
advertise visa sponsorship. Right-to-work in the UK is preferred. Foreigners may still enquire with the employer. Oxford Knight is seeking a Senior Python Quant Developer in London for a full-time role in systematic trading. This position is ideal for UK-based applicants with existing right … competitive salary starting at £66,504.59 and an opportunity to join one of the world's premier investment firms. Job Description As a Senior Python Quant Developer, you will be instrumental in developing sophisticated components for both live trading environments and simulation systems. This role places you directly ...

Senior Java Developer for Scalable Telecom BSS/OSS

Location
Greater London, England, United Kingdom
Cerillion in London is seeking a Senior Developer to join our Software Engineering team. You will design, develop, and deliver enhancements to Cerillion’s core BSS/OSS products, mentor juniors, and collaborate with architects and cross-functional teams to ensure robust, scalable systems. The role focuses ...

Senior Full Stack Developer

Location
Greater London, England, United Kingdom
Senior Full Stack Developer Lead the build of our flagship enterprise client platform serving FTSE 250 customers. London, UK • 5+ yrs Experience • Posted 2 days ago Responsibilities Own delivery of major features end-to-end, from technical design through production deployment. Lead architecture and code reviews ...

Senior Cloud Developer – AWS | Secure Gov/Defense

Location
Greater London, England, United Kingdom
UBDS Group is seeking an experienced Senior Developer to support secure, modern digital products across Government and Defence. You will design, build, test and deploy cloud-based apps in AWS, using Python, JavaScript and SQL/PostgreSQL. You’ll develop APIs, integrate services, manage data flows and write ...

Senior .NET Developer - Lead & Mentor (Hybrid, 6m)

Location
Greater London, England, United Kingdom
SEFE Group in London is seeking a Senior Developer to design, develop, and deliver business-critical applications across the trading lifecycle. You will combine hands-on engineering with technical leadership and mentoring to shape SEFE’s technology landscape. You will deliver scalable software for trading, risk, and operations ...

Senior Python Developer

Hiring Organisation
Spectrum IT Recruitment
Location
City of London, London, Cripplegate, United Kingdom
Employment Type
Permanent
Salary
£75000 - £85000/annum Bonus & Benefits
Senior Python Engineer | Infrastructure Automation London, London City Hybrid, 2 days a week onsite £75k plus 8% bonus, 10% pension, private healthcare 5+ years commercial experience with Python We're recruiting for a Senior Python Engineer to join a global AI & SaaS specialist. This is an opportunity ...

Senior Salesforce Developer

Location
Greater London, England, United Kingdom
Working: Hybrid Are you looking to utilise your expertise in Salesforce development, architecture, and AI-driven solutions? We have an exciting opportunity for you - Senior Salesforce Developer ! Careers at TCS: It Means More TCS is a purpose-led transformation company, built on belief. We do not just help … Agentforce, Data Cloud, and AI-driven capabilities. Collaborate with architects, developers, and business stakeholders to drive digital transformation and innovation. The Role As a Senior Salesforce Developer , you will be responsible for designing, developing, and supporting scalable Salesforce solutions that meet complex business and technical requirements. You will ...

Senior webMethods Integration Developer

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£625 - £645/day inside ir35
title: Senior webMethods Integration Developer Contract: 6 months rolling Rate: £625 - £645 per day inside ir35 Location: Remote - Some travel to Client site will be required (estimate 1-2 times per month to London and/or the South/South-East). SC security clearance is required … this role. I'm looking for a Senior webMethods Integration Developer to join an agile delivery team working on a mission-critical UK MOD platform. This is a genuinely hands-on development role for someone who knows webMethods Integration Server, Universal Messaging and API Gateway inside ...

Senior Salesforce Developer & Architecture Lead - UK

Location
Greater London, England, United Kingdom
Laotop recherche des profils Salesforce Senior Developer pour intervenir sur des projets au Royaume-Uni, dont Londres et Midlands. Le rôle implique du développement, de la gestion de projets et de l'architecture Salesforce. Plusieurs sites et séances hebdomadaires sont prévus; les entretiens sont planifiés prochainement. Aucun soutien ...

Senior Full Stack Developer - Java/Spring Boot/AWS

Location
Greater London, England, United Kingdom
Senior Full Stack Developer Internal Title: Software Engineering Senior Consultant Location: London, UK (Hybrid - typically 1-2 days per month in office) Contract: Permanent, Full-time Package (perm): £70,000 - £85,000 + 10% Bonus + 10% Shares + Benefits (see more below) About Appvia Appvia … specialist cloud, platform, and solutions engineering consultancy, helping organisations modernise software systems, improve developer productivity, and adopt cloud-native practices that enable long-term, sustainable delivery. Our software engineering capability focuses on modern application development, domain-driven design, and improving delivery outcomes through better architecture, testing, and developer ...

Senior C++ Developer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Contract
Contract Senior C++ Developer Location: London, 2 to 3 days onsite in Kings Cross Contract: Immediate start - 12 week contract Who We Are AND Digital are on a mission to close the world's tech skills gap. We help organisations navigate the future of technology by combining human ...

Senior C++ Developer

Location
Greater London, England, United Kingdom
Contract Senior C++ Developer Location: London, 2 to 3 days onsite in Kings Cross Contract: Immediate start - 12 week contract Who We Are AND Digital are on a mission to close the world's tech skills gap. We help organisations navigate the future of technology by combining human ...

Senior Full Stack Developer - C#/Azure /Kafka

Location
Greater London, England, United Kingdom
Senior Full Stack Developer - C#/Azure/Kafka Internal Title: Software Engineering Senior Consultant Location: London, UK (Hybrid - typically 1-2 days per week in office/client site) Contract: 6-month rolling contract Rate: £600-650 per day, Outside IR35 Start: ASAP About Appvia Appvia … specialist cloud, platform, and solutions engineering consultancy, helping organisations modernise software systems, improve developer productivity, and adopt cloud-native practices that enable long-term, sustainable delivery. Our software engineering capability focuses on modern application development, cloud-native architecture, event-driven systems, and improving delivery outcomes through better engineering practices. ...

Senior Financial Systems Developer

Location
Greater London, England, United Kingdom
/IBM Planning Analytics Developer (Senior) – 12 Month FTC Location: Hybrid Client: Financial Services Salary: up to £80,000 This role is a 12-month fixed-term contract. The Role This role sits within a high impact finance systems team and will focus on developing and enhancing ...

Senior C# & React Developer, Real‐Time Finance (Hybrid)

Location
Greater London, England, United Kingdom
Talan Group is looking for a Senior Developer to join their technology team in Greater London. This role requires expertise in TypeScript and React, where you will design and deliver features across UI and backend services. You will collaborate closely with stakeholders to refine requirements and support live ...