151 to 175 of 301 Java Jobs in London

Global Head of Front Office Application Engineering

Hiring Organisation
Cititec
Location
London Area, United Kingdom
engineering leadership within trading, commodities, energy or capital markets. Proven experience running front-office application teams supporting live trading desks. Strong technical background in Java, React, APIs, real-time data and AWS. Experience delivering high-performance, low-latency trading platforms. Confident working directly with traders, quants and senior commercial stakeholders. ...

Software Engineer

Hiring Organisation
Harrington Starr
Location
London Area, United Kingdom
high-stakes environment What we’re looking for 2–5 years’ experience as a software engineer Strong fundamentals in algorithms & data structures Proficiency in Java, C++, Go, or similar (Go experience not required) Experience with distributed systems Interest in data analysis/statistics (regressions, data validation, basic ML) Relational database ...

High-Performance Computing Engineer

Hiring Organisation
Hamilton Barnes 🌳
Location
City of London, London, United Kingdom
efficient system designs Advising on platform performance, correctness, and cost efficiency What we’re looking for Commercial experience with at least one managed language (Java, C#, or Python) Practical experience with a low-level, manual-memory language (C, C++, or Rust) Background in either high-performance computing or financial systems ...

Graduate Software Developer / Quantitative Developer / Quantitative Researcher - Up to £180,000 + Bonus + Package

Hiring Organisation
Hunter Bond
Location
City of London, London, United Kingdom
performance-driven culture ✅ What You’ll Bring 🎓 Degree in Computer Science, Mathematics, Physics, Engineering , or another STEM discipline 💻 Strong programming skills in Python, C++, Java, C#, or KDB+/Q 🔍 Analytical mindset with a passion for tackling complex, data-driven challenges ⚡ Curiosity, drive, and the ability to thrive in fast ...

Design Systems Analyst

Hiring Organisation
Tandem Talent Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
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. ...

Blue Prism Developer

Hiring Organisation
Rec3 Global Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£60,000
RESTful APIs and Webservices Confident communicator with the ability to explain technology to non-technical audiences Background in Software Engineering using C#, C++, Java would be a hugebonus ...

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 ...

Lead Solutions Architect

Hiring Organisation
FBI &TMT
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
record leading multi-geography, multi-vendor technical collaborations. Deep understanding of cloud SaaS architectures and insurance/health-tech domains. Hands-on technical credibility (Java, Kafka, AWS) combined with executive presence and negotiation skills. Demonstrable expertise in tools/technologies for the design, development, build, testing and deployment of various ...

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 ...

SDE II

Hiring Organisation
Expedia Group
Location
Greater London, England, United Kingdom
field of Software Engineering Proficient with Object Oriented Programming concepts with a strong understanding of Data Structures, Algorithms, and Computer Science fundamentals Experience with Java/Scala (JVM) and Spring along with a good grasp of OO design with strong design patterns knowledge. Experience with cloud-computing platforms such ...

Full Stack Developer - Active SC, NPPV3, Java

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Full Stack Developer - Active SC, NPPV3, Java Up to £550 per day - Inside IR35 Remote 6 months My client is an instantly recognisable consultancy who require a Full Stack Developer with Active SC and NPPV3 clearance for a client within the public sector. Key Requirements: Proven commercial experience working … Full Stack Developer within the Public Sector. Active SC and NPPV3 Clearance. Senior-level expertise in either Java/Spring (Boot, Data JPA, Security) or JavaScript/TypeScript with React; mid-level experience acceptable in the other Proven experience delivering high-quality, cross-functional solutions using microservices and micro-frontend ...

Full Stack Software Engineer

Hiring Organisation
Firenze
Location
City of London, London, 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 ...

Senior Java Engineer Smart Contract

Hiring Organisation
Adecco
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Title: Senior Java Engineer (Smart Contract) Location: London Contract: 12 Months Are you a passionate Senior Java Developer looking to make a significant impact in an innovative environment? Our client is seeking a talented individual to join their dynamic team in London, where you'll design and develop cutting-edge … fast-paced atmosphere and enjoy collaborating with cross-functional teams, this opportunity is for you! What We're Looking For: Strong expertise in Java and Spring/Spring boot. Hands on Smart Contract (Solidity) experience in essential Experienced in financial services , Ideally Commercial Lons. Experience in developing and deploying microservices ...

Java Developer

Hiring Organisation
Opus Recruitment Solutions Ltd
Location
Soho, London, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £90,000 per annum
Java Developer | Backend | Microservices | FinTech | London | Hybrid | £90k I'm proud to partner with a global financial organisation, creating an app that allows people in countries like Mexico, Argentina, Colombia, and Brazil manage money in digital dollars and digital euros and it’s designed to protect users from local currency … with partners such as Mastercard, Stripe, OpenAI to make sure they leverage latest technology in all their products.They are looking for an experienced Senior Java Developer, predominantly on version 21 with PostGres Database and Spring Boot, to help develop their rapidly growing application, by building REST APIs, Microservices and evolving ...

Back End Developer / SRE Java JVM - Fintech

Hiring Organisation
Client Server
Location
London, England, United Kingdom
Back End Developer/SRE (Java JVM) London/WFH to £110k Are you a Back End Developer/SRE with a strong knowledge of Java and JVM internals? You could be progressing your career in an impactful role at a global Fintech that has been consistently voted … advisor to influence system design, ensuring reliability standards and driving improvements across the platform. You'll have a broad scope including hands-on coding (Java) to build tools and automation, incident response, observability, performance optimisation and operational excellence, working with large scale Java JVM distribution systems and message brokers such ...

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 ...

Lead Java Developer - £85k & London

Hiring Organisation
Opus Recruitment Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £130,000 per annum
Lead Java Developer - £85k & LondonJava, Springboot, Microservices, AWSI’m partnering with an established tech firm that’s been building digital platforms and mobile products for over 2 decades.They work with well-known businesses in highly regulated industries, where systems need to be secure, reliable and built properly. They … things are designed and improved, and there’s a real emphasis on clean code, testing and maintainability.Their current tech stack is a mixture of Java, Springboot, Microservices, Kakfa, AWS, CI/CD, SQL, Kubernetes to name a few areas. We need strong engineers who are great communicators ...

Lead Java Developer

Hiring Organisation
Russell Tobin
Location
City of London, London, United Kingdom
months contract/Hyrbid/2 days in office London/750 per day Inside Ir 35 Senior Java Developer (VP) Role Overview We are seeking a Senior Java Developer with deep Electronic Trading expertise to join our E-Fixed Income (eFI) Development Team in London. The team builds … TransFICC connectivity within the eFI ecosystem Identify and eliminate performance bottlenecks through profiling, tuning, and architectural improvements Develop lock-free, allocation-free, performance-critical Java components Deliver high-quality software using Test-Driven Development and Domain-Driven Design Partner with Traders, Financial Engineers, and Business Analysts to translate trading requirements ...

Back End Developer

Hiring Organisation
Experis
Location
South Croydon, Greater London, UK
looking for an experienced Backend Developer to join a high-impact project delivering scalable, reliable backend xkybehq services. You'll work with modern Java-based technologies in a co Please click on the apply button to read the full job description ...

Technical Architect

Hiring Organisation
TXP
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£NEG
legacy enterprise integration platform. We need an experience Architect who can investigate and validate migration/modernisation options to move an existing Oracle WebLogic Java Integration architecture, running on Oracle RAC, to a modern AWS-hosted solution. Skills & Experience: Proven experience as a Lead Technical Architect, ideally in Central government. ...

Specialist Architect Lead - SC Cleared

Hiring Organisation
Brightbox GRP Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£600 - £650 per day, Benefits Fully Remote
cloud hosting. Key Responsibilities Lead a time-boxed 6-week technical investigation and PoC . Analyse the current legacy integration platform (WebLogic, Java Integration, Oracle RAC). Review design hosting architecture options. Build prototypes to validate recommended approaches. Produce clear architectural outputs and recommendations for stakeholders. Required Skills & Experience Proven ...

AI Safety Researcher - London Fully Remote

Hiring Organisation
Randstad Technologies
Location
London, South East, England, United Kingdom
Employment Type
Contractor
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 ...

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 ...