151 to 175 of 277 Java Jobs in London

AI/ML Principal Engineer

Hiring Organisation
Velocity Talent Ltd
Location
Central London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 per day £400 a day inside IR35
Reasoning, text-embedding-ada-002 Libraries & Tools numpy, pandas, scipy, scikit-learn, tensorflow, keras, nltk, matplotlib, seaborn, plotly Programming Languages Python, R, C++, C#, Java, Node.js, HTML, SQL Agentic AI OpenAI Agents SDK, Model Context Protocol (MCP), LangChain, LangGraph, Bedrock Agents, CrewAI, Helicone Rate:400GBP/day Inside IR35 Work ...

IT Service Engineer

Hiring Organisation
ARM
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
/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 ...

Senior Cyber Operations Analyst

Hiring Organisation
Anson Mccade
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
development. Solid understanding of core cybersecurity concepts: network security, cloud security, cryptography, and forensics. Familiarity with scripting or programming (Python, Bash, C/C++, Java). Knowledge of network protocols and common analysis techniques for Windows and/or Linux. Awareness of APTs and their TTPs, and experience interpreting threat ...

IT Service Engineer

Hiring Organisation
ARM
Location
Twickenham, London, St. Margarets and North Twickenham, United Kingdom
Employment Type
Permanent
/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 ...

Application Support Engineer

Hiring Organisation
CMC Markets
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
application support environment 2+ years’ experience working with Red Hat Linux (or other Unix variants), including scripting 2+ years’ experience supporting applications such as Java, .NET, Apache or IIS Desirable: Experience within the financial services or trading environment Knowledge of Windows Server Familiarity with ITIL frameworks Exposure to market data ...

Junior IT Support

Hiring Organisation
Northend Solutions ltd
Location
Barnet, Hertfordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£26,000 - £35,000 per annum
when required. Must have flexibility/willingness to work on-call hours (both weekday and weekend). Ideally, some software development knowledge (SharePoint, Python, Java or Kotlin) as down the line there will be specifically related projects. Assist with writing of end user and IT documentation as required. Role-based ...

HPC Engineer

Hiring Organisation
HMx Labs
Location
City of London, London, United Kingdom
least 1 year of experience as a software engineer in paid full-time employment Knowledge and commercial experience with at least one of, Java, C# or Python Experience with at least one non-managed/manual-memory language , e.g. C, C++, Rust. At least one of the following : Exposure ...

Security Consultant (Applications)

Hiring Organisation
Morson Edge
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - 750 per day
About the Role You will act as the security lead embedded within an application development delivery team, working across a complex hybrid environment including Java/React, J2EE microservices, RPG/JSP on z/OS, and API-driven architectures. Your mission: enable fast, secure delivery by uplifting application security ...

Senior Java Developer

Hiring Organisation
Eligo Recruitment Ltd
Location
London, Chaucer, United Kingdom
Employment Type
Permanent
Salary
£85000 - £95000/annum
Back End Java Developer with experience within the iGaming and Gambling sector looking for a new and exciting challenge? BENEFITS : up to £95k depending on experience, fully remote, excellent benefits package You will be joining a rapidly expanding company within the iGaming sector, who are committed to providing top-tier … brands within our market, blending sports betting and online casino entertainment on a cutting-edge, custom-built platform. You will be a skilled Senior Java Backend Developer who is a self-motivated professional with a strong track record and a passion for excellence. You'll play a key role ...

Senior Developer

Hiring Organisation
Tenth Revolution Group
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400/day
platforms, and applying strong DevOps, TDD, and modern engineering practice throughout. Key Responsibilities Develop new services using Python while supporting existing components written in Java and .NET Work with Oracle PL/SQL to support legacy and operational systems Engineer solutions across cloud and infrastructure environments including AWS, Azure, Linux … engineers, designers, and product teams to deliver secure, scalable, user-centred services Required Technical Skills Strong experience building digital services with Python Familiarity with Java and .NET for supporting existing systems Skilled in Oracle PL/SQL Experience with AWS and Azure Knowledge of GitHub, Azure DevOps, Docker, Kubernetes ...

Senior Developer - £400PD - Remote

Hiring Organisation
Tenth Revolution Group
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£350 - £425/day
Responsibilities Backend Development: Develop and maintain backend services, with Python as the preferred language for new systems. Provide support for services built in Java and .NET, ensuring seamless integration and continued reliability. Enhance and maintain existing solutions using Oracle SQL PL. Database & Data Services: Work with relational databases including Oracle … culture of knowledge sharing and continuous improvement. What We're Looking For Strong experience developing backend services with Python, plus working knowledge of Java and/or .NET. Proficiency in SQL and experience with Oracle PL/SQL or similar technologies. Hands-on experience with cloud platforms (AWS, Azure), containerisation ...

Mid Java/Clojure developer

Hiring Organisation
S&P Global
Location
London Area, United Kingdom
counter derivatives in support of trading, research, valuation and independent price verification. Asset class coverage includes foreign exchange, interest rate and equity derivatives. As Java/Clojure developer working within OTC Derivatives Data you’ll be working closely with our product and data specialists across all asset classes, extending … Looking For: Basic Required Qualifications: Degree in computer science or numerate discipline, or equivalent background 3+ years of experience working on distributed Java platforms and Web Platforms Comfortable working with both UNIX/Linux and Windows environments Good understanding of agile software development methodology Thorough understanding of fundamental software engineering ...

Senior Java Software Engineer

Hiring Organisation
CMC Markets
Location
Greater London, England, United Kingdom
release management. Respond to real-time trading issues in a fast-paced environment, ensuring minimal business disruption. Key Skills & Experience: Strong expertise in Core Java, Spring Framework/Spring Boot, or similar backend frameworks. Proven experience designing and developing API-based, microservices-driven architectures. Solid understanding of multi-threaded systems ...

Full Stack Software Engineer

Hiring Organisation
Firenze
Location
London Area, United Kingdom
design, build, and deliver customer-facing features across our greenfield platform. You’ll work end-to-end—crafting TypeScript frontends and robust Java back-ends—while learning from experienced engineers and contributing to a modern, scalable architecture . This is a hands-on role with plenty of opportunity to develop … mentorship, learning, and engineering excellence. Key Responsibilities Feature Delivery: Collaborate with senior engineers to deliver new features from design to production. Back-End Engineering (Java): Build APIs and microservices using Java (Spring Boot, Micronaut, or Quarkus), with guidance on best practices for performance and reliability. Front-End Engineering (TypeScript – Nuxt ...

Software Engineer Java Spring Boot AWS

Hiring Organisation
Client Server
Location
West London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£65,000
Software Engineer/Developer (Java Spring Boot AWS) London/WFH to £65k Are you a backend focused Java Software Engineer looking for an opportunity where you can make an impact? You could be progressing your career at a growing US based tech company that provide a platform for gaming … team in London three days a week with flexibility to work from home twice a week. About you: You're a backend focused Java Developer You have a good knowledge of Spring Boot and microservices You're familiar with AWS You have a good appreciation of front end technologies e.g. ...

Senior Java Software Engineer

Hiring Organisation
Paritas Recruitment
Location
City of London, London, United Kingdom
Lead Software Engineer – Java Microservices | London (1 day per week on-site) | £74,000 – £92,000 + Package We’re partnering with a leading UK bank to recruit a Lead Software Engineer with strong Java and microservices expertise. This is a hands-on role building high-performance, scalable software … building robust microservices that support high-traffic user experiences, serving thousands or millions of concurrent users. What We’re Looking For Proven experience developing Java microservices for high-traffic applications (retail, e-commerce, media, or streaming platforms). Hands-on experience with the full software lifecycle in agile environments ...

Sports Trading Quantitative Analyst

Hiring Organisation
Spectrum It Recruitment Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£80,000
well as very competitive salaries, our client offers an excellent working environment. Skills required: Proficient in several of the following: Python, C#, C++, Java Mathematical Modelling Mathematical skills, particularly a keen understanding of probabilities and statistics Analytic mindset Strong communication skills Accuracy and attention to detail Experience in data science ...

Sports Trading Quantitative Analyst

Hiring Organisation
Spectrum IT Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
well as very competitive salaries, our client offers an excellent working environment. Skills required: Proficient in several of the following: Python, C#, C++, Java Mathematical Modelling Mathematical skills, particularly a keen understanding of probabilities and statistics Analytic mindset Strong communication skills Accuracy and attention to detail Experience in data science ...

AI Safety Researcher - London (Fully Remote)

Hiring Organisation
Randstad Digital
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£480 - £725 per day
quality training and benchmarking data. Who You Are Safety Expert: Proven experience in adversarial testing and model alignment. Tech Stack: Strong Python , SQL , and Java . AI Specialist: Hands-on experience with LLMs and prompt engineering. Academic: MSc/PhD in AI/ML (Safety or Agentic systems focus preferred ...

Solutions Engineer/ Technical Account Manager

Hiring Organisation
Pivotal Partners
Location
London, UK
Employment Type
Full-time
customer-facing technical role (SE, TAM, Consulting, CSE). Enterprise software experience (cloud, ERP, databases, integrations). ERP knowledge required; SAP experience a plus. Java, ABAP, SQL, or similar preferred; AI/LLM exposure a plus. Strong communicator with technical and executive audiences. Comfortable managing multiple initiatives; willing to travel ...

Python Quant Dev - Cash Equities/Algo/Backtesting/Trading/Market Making

Hiring Organisation
Scope AT Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
consulting capacity to optimise use of trading products Key Skills & Experience Strong quantitative mindset with passion for data and research Strong Python development skills (Java exposure beneficial but not core) Experience with electronic trading strategies and market microstructure Knowledge of European equities markets Exposure to distributed systems and large-scale ...

Technical Lead

Hiring Organisation
Understanding Recruitment
Location
London Area, United Kingdom
part in shaping architecture, mentoring engineers, and driving best practices across the platform. They’re looking for people with experience in: Kotlin (or strong Java engineers willing to transition) AWS or other major cloud platforms Event-driven & microservices architectures Working in modern, product-driven tech environments Leading teams while remaining ...

Offensive Security Tester Red Team

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£50,000
keen interest in Cyber Security and understanding of key concepts and protocols You can code with any OO programming language (e.g. Python, C++, C#, Java) You have experience of using different operating systems and networking technologies You have a good understanding (and interest in) low level concepts including operating systems ...

Director - Lead Software Engineer (Java, Equities)

Hiring Organisation
Huxley Associates
Location
London, United Kingdom
Employment Type
Permanent
Salary
£120000 - £180000/annum + Bonus & Benefits Package
Director - Lead Software Engineer (Java, Equities) Location: London | Division: Investment Banking | Type: Full-time About the Role We are seeking a Director-level Lead Software Engineer to join our Equities Technology team within the Front Office. This is a hands-on, independent contributor role where you will design and build … closely with traders, quants, and other technologists to deliver innovative solutions in a fast-paced environment. Key Responsibilities Lead the design and development of Java-based trading and risk platforms for equities. Deliver low-latency, high-throughput systems for order management and execution. Collaborate with front-office stakeholders to understand ...

Senior Back End Engineer

Hiring Organisation
Finseta
Location
City of London, London, United Kingdom
place where you work will be seen and your impact will be clear. Position Overview The "What" We are looking for a Senior Java Back-End Developer with a proven track record of designing and building scalable and high performing back-end systems, ideally in the financial services sector. … level idea and being able to ship a final product. This includes architecture, automated testing, and devops related items. Our main technology stack is: Java 21 Spring Boot Kafka Postgres Microservices AWS Kubernetes Terraform The "How" The most important assets to being successful in our team are proactivity and initiative. ...