Java Jobs in London

151 to 175 of 297 Java Jobs in London

Senior Software Developer - Java

London, England, United Kingdom
Kantar Media
/Hybrid Description Role Description We are seeking a Senior Software Developer with a strong focus on developing production-grade software, extensive experience with Azure services, and proficiency in Java, Python, PySpark. You will manage a team and collaborate with a third-party vendor to deliver robust, scalable solutions. Role Responsibilities Owning the development team in design, development, coding, testing. More ❯
Posted:

Senior Java Developer SaaS Platform - £85k & London

London, South East, England, United Kingdom
Opus Recruitment Solutions Ltd
Java Full-Stack DeveloperLocation: London (Hybrid)Salary: £85,000 – £90,000 + benefitsI’ve partnered with an exciting tech firm who are building software that transforms how stakeholders make important decisions. What started as a consultancy has evolved into a SaaS platform that helps organisations cut through hundreds of pages of board packs and focus on what matters. Their products … combine Java, AI, and modern web technologies to deliver clarity and speed for decision-makers.They’re estimated at nearly $30M, annually, and have 3 offices globally, with the view to grow their UK footprint. Having recently doubled down on AI-driven tools, they are tackling the biggest pain points stakeholders have, information overload and poor decision-making efficiency. What You … ll Do Develop and enhance their core services built in Java (Spring Boot). Work on full-stack features using React (or similar modern JS frameworks). Collaborate on new product initiatives, including AI-powered tools. Contribute to architecture decisions and help shape the future Tech Stack Backend: Java (Spring Boot), Ruby on Rails (legacy), Golang, Python (AI services) Frontend More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Java Developer - (Java/Kafka/MQ Series)

London, United Kingdom
Henderson Scott
We are urgently seeking a highly skilled SC Cleared Java Backend Developer to join a critical project with a high-profile Government Client . This is a key technical role focusing on a vital component of the client's technology landscape: migrating a legacy message queueing system to a modern, scalable platform click apply for full job details More ❯
Employment Type: Contract
Rate: GBP 525 Daily
Posted:

Pentaho Developer

London, United Kingdom
InfinityQuest Ltd,
of data warehousing concepts, data modelling, and schema design. Experience with other ETL tools (Informatica, Talend, SSIS) is a plus. Advanced SQL for querying and data manipulation. Familiarity with Java, Python, or VBA for scripting and automation click apply for full job details More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer (AI Agent Developer)

London, United Kingdom
Randstad Digital
AI Engineer (Java, Golang) 6 Months Contract Inside IR35 Pay rate- 600- 750 GBP per day Inside IR35 Work mode- Remote We are looking for a passionate (Backend Engineer AI Engineer AI Agent Developer) to join the IT studio, the team responsible for advancing the digital workplace experience click apply for full job details More ❯
Employment Type: Contract
Rate: GBP 600 - 750 Daily
Posted:

Contract Front-end developer (SC Cleared)

London Area, United Kingdom
Spinks
with a consultancy who are looking to bring on an SC cleared front end developer to assist on a project with a public sector client. Key Skills: React TypeScript Java experience highly beneficial The successful candidate will need to have active SC clearance for this position. If you're interested in learning more about this role, please apply with your More ❯
Posted:

Principal/Lead Android Engineer - Mobile Banking

London, United Kingdom
Vertus Partners
and Skills: Proven leadership and team management experience Ability to influence cross-functional teams and senior stakeholders Extensive experience building complex Android applications System design and architecture capabilities Kotlin, Java, and Jetpack Compose Experience with Agile methodologies, TDD, and CI/CD practices This is an excellent opportunity to help shape the future of digital banking and contribute to a More ❯
Employment Type: Permanent
Salary: GBP 95,000 - 120,000 Annual
Posted:

Fullstack Developer - UK (Fully REMOTE)

London, United Kingdom
Hybrid/Remote Options
Randstad Technologies Recruitment
own core login/signup capabilities for a Tier 1 Global Consumer Platform . This is a high-scale, mission-critical role demanding deep technical expertise. Must Haves: Strong Java Backend Systems experience. Proficiency with Next.js and JavaScript. Experience with High-Scale, Consumer-Facing Products. Knowledge of Kubernetes, GCP, and OAuth 2.0. This is an urgent vacancy with a deadline More ❯
Employment Type: Contract
Rate: £600 - £670/day
Posted:

Technical Architect

London, UK
Hybrid/Remote Options
Unify Talent - IT, Digital & Tech Recruitment
transformation experience Monolith → Microservices migrations Strangler patterns Platform architecture & roadmap planning Ability to work closely with engineering teams in complex technical environments The tech stack consists of: Kotlin/Java backend APIs Frontend with Express + TypeScript AWS, event-driven architecture Designing architectural boundaries (no expectation to get hands-on with code) Active SC Clearance is essential. Please apply by More ❯
Employment Type: Full-time
Posted:

Fullstack Developer - UK Fully REMOTE

London, South East, England, United Kingdom
Hybrid/Remote Options
Randstad Technologies
own core login/signup capabilities for a Tier 1 Global Consumer Platform . This is a high-scale, mission-critical role demanding deep technical expertise. Must Haves: Strong Java Backend Systems experience. Proficiency with Next.js and JavaScript. Experience with High-Scale, Consumer-Facing Products. Knowledge of Kubernetes, GCP, and OAuth 2.0. This is an urgent vacancy with a deadline More ❯
Employment Type: Contractor
Rate: £600 - £670 per day
Posted:

Technical Architect

South London, UK
Hybrid/Remote Options
Unify Talent - IT, Digital & Tech Recruitment
transformation experience Monolith → Microservices migrations Strangler patterns Platform architecture & roadmap planning Ability to work closely with engineering teams in complex technical environments The tech stack consists of: Kotlin/Java backend APIs Frontend with Express + TypeScript AWS, event-driven architecture Designing architectural boundaries (no expectation to get hands-on with code) Active SC Clearance is essential. Please apply by More ❯
Employment Type: Full-time
Posted:

Software Engineer

London Area, United Kingdom
Understanding Recruitment
large-scale data pipelines, and real-time detection engines - all built to make the internet a safer place. You’ll thrive here if you: Have strong OOP experience (Python, Java, Go, or Rust - core stack: C#, and they’ll support you ramping up) Enjoy turning complex systems into clean, elegant solutions Like working in a fast-paced environment with real More ❯
Posted:

Senior Software Engineer

London, South East, England, United Kingdom
IPS Group
early-stage tech and comfort with rapid iteration. Ability to work with diverse stakeholders across climate, tech and insurance. Must have Insurtech OR Climate/Carbon background Experience with Java Interest in climate action and carbon-reduction science. Why it’s interesting Influence the technical direction from an early stage. Work with mission-driven colleagues. Apply engineering skills to meaningful More ❯
Employment Type: Full-Time
Salary: £85,000 - £100,000 per annum
Posted:

Backend Developer

London, United Kingdom
Hays Technology
data structures, and distributed systems Experience building and operating large-scale backend systems Expertise in system and API design, scalability, and performance tuning Proficiency in a modern backend language (Java preferred) Knowledge of cloud-native architectures, containers, and CI/CD Proven leadership in technical strategy and mentoring What you need to do now If you're interested in this More ❯
Employment Type: Permanent
Salary: £100000 - £110000/annum £110,000 -£130,000
Posted:

Backend Developer

London, South East, England, United Kingdom
Hays Specialist Recruitment Limited
data structures, and distributed systems Experience building and operating large-scale backend systems Expertise in system and API design, scalability, and performance tuning Proficiency in a modern backend language (Java preferred) Knowledge of cloud-native architectures, containers, and CI/CD Proven leadership in technical strategy and mentoring What you need to do now If you're interested in this More ❯
Employment Type: Full-Time
Salary: £100,000 - £110,000 per annum
Posted:

Lead Flutter developer

London Area, United Kingdom
Tank Recruitment
through reviews, feedback, and technical leadership What we’re looking for 3+ years building and maintaining production Flutter apps at scale 5+ years in iOS and Android development (Swift, Java, Flutter) 10+ years of professional software engineering experience Deep knowledge of modern state management approaches Hands-on experience with monitoring tools (Firebase Crashlytics, Sentry, New Relic, or similar) Strong communicator More ❯
Posted:

Design Systems Analyst

London, South East, England, United Kingdom
Tandem Talent Ltd
computational design, environmental analysis, advanced geometry, BIM, parametric modelling, or animation. High proficiency in Rhino, Grasshopper, Revit, Dynamo, Microstation, CATIA/Digital Project, Generative Components. Programming skills: Python, C#, Java, Javascript, Processing, or VBA. Deep understanding of 3D workflows, geometry, and digital fabrication in the built environment. Strong communication, problem-solving, and team collaboration skills. Highly organised, proactive, and resilient More ❯
Employment Type: Full-Time
Salary: Competitive salary
Posted:

Intermediate Software Developer (Data)

London Area, United Kingdom
Global Relay
BI platform, such as Apache Superset, Looker, Metabase, SAP BI/SAC, MicroStrategy, Microsoft Power BI, Tableau, or Qlik. Familiarity with agile development methodologies. Nice to have Experience in Java Experience in test driven development Experience with continuous integration systems Company Benefits Private pension Bonus Full medical cover Dental care flexi working Free fruit Snacks coffee etc. 25 days holiday More ❯
Posted:

Lead Mobile Developer - Flutter

London, South East, England, United Kingdom
Tank Recruitment
through reviews, feedback, and technical leadership What we're looking for 3+ years building and maintaining production Flutter apps at scale 5+ years in iOS and Android development (Swift, Java, Flutter) 10+ years of professional software engineering experience Deep knowledge of modern state management approaches Hands-on experience with monitoring tools (Firebase Crashlytics, Sentry, New Relic, or similar) Strong communicator More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

AI Engineer - London - Fintech Trading

London, United Kingdom
Transparent Technology
experienced technologists and finance professionals to deliver high-value AI solutions. Required Experience & Skills: 2+ years software development, 1-2+ years in AI/ML development. Python (mandatory), Java or TypeScript (advantageous) ML fundamentals, LLM integration, prompt engineering, RAG workflows, AI frameworks and Fine-tuning. Mindset: Self-motivated, growth-oriented, passionate about emerging AI tools. Environment: Comfortable in a More ❯
Employment Type: Permanent
Salary: £75,000
Posted:

IT Service Engineer

London, United Kingdom
ARM
SC900) qualified ideally Virtualisation (ESXI/HyperV/Virtualisation) Technologies: MS Server 2019/22, Redhat Linux, AD and Group Policy Management, MS Certificate and KPI, MS SQL, Gigaspace, Java, Network config and Management, WSUS,/UXMS Hardware: Cisco LAN/WAN switches, Dell/Fujitsu/HP Server and user devices, Dell/Fujitsu/HP Server and SAN More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

IT Service Engineer

Twickenham, London, St. Margarets and North Twickenham, United Kingdom
ARM
SC900) qualified ideally Virtualisation (ESXI/HyperV/Virtualisation) Technologies: MS Server 2019/22, Redhat Linux, AD and Group Policy Management, MS Certificate and KPI, MS SQL, Gigaspace, Java, Network config and Management, WSUS,/UXMS Hardware: Cisco LAN/WAN switches, Dell/Fujitsu/HP Server and user devices, Dell/Fujitsu/HP Server and SAN More ❯
Employment Type: Permanent
Posted:

VP of Rights

Central London, London, United Kingdom
Stats Perform
From real-time data collectors and AI specialists to elite journalists and cloud engineers, our team turns raw numbers into magic. Our tech experts work with advanced cloud solutions, Java, JavaScript, and Python, using AI and machine learning to extract insights and deliver them via APIs. Were looking for a visionary and commercially astute leader to join our Rights team More ❯
Employment Type: Permanent
Posted:

Senior Software Engineer II, Backend - Customer Journey Product Line

London, England, United Kingdom
HubSpot
Someone Who Has 7+ years of backend engineering experience, ideally in a modern, cloud-based environment. Is proficient in one or more of HubSpot’s backend languages and frameworks (Java, Kotlin, or similar JVM-based languages). Has experience designing and scaling distributed systems, search services, and APIs. Understands how to build reliable, observable systems that can evolve quickly and More ❯
Posted:

Senior Backend Developer - DEM

London, England, United Kingdom
Hybrid/Remote Options
ITRS
business with the stability of a private equity-backed global partner. Scope of Role We are looking for a Senior Backend Developer with deep C#/.NET expertise (and Java experience preferred) to join our Digital experience monitoring (DEM) and Analytics Platform. Reporting to the Engineering Manager and working within our global engineering organisation, you will help design, build and …/CD and automated testing across unit, integration and end-to-end levels. Experience working in globally distributed teams and collaborating across multiple time zones. Advantageous experience Experience with Java and familiarity with the JVM ecosystem; Spring Boot exposure. Cloud experience with AWS, Azure or GCP; infrastructure-as-code (e.g., Terraform, Helm) and secure configuration management. Performance profiling and tuning More ❯
Posted:
Java
London
10th Percentile
£57,500
25th Percentile
£75,000
Median
£101,250
75th Percentile
£130,000
90th Percentile
£142,500