301 to 325 of 337 Java Jobs in London

Software Engineer (National Security)

Hiring Organisation
Frontier Resourcing
Location
City of London, London, United Kingdom
Make an Impact Central London 4 or 5 days a week on site Existing SC or DV Clearance is required National Security Sector Tech: JAVA/C++/Python - or Devops/Data Background An exciting opportunity has arisen for a Software Engineer to join a cutting-edge team developing … reviews Comfortable taking projects from initial concept through to delivery Analytical thinker who can decompose challenges and deliver iterative value Preferred Background Experience using Java, C++, or Python Understanding of data-intensive systems, backend services, or cloud-based platforms Familiarity with regulated, high-security, or mission-critical development contexts Confidence ...

Software Engineer – Middle Office Technology

Hiring Organisation
Provn
Location
Greater London, England, United Kingdom
office systems supporting: Trade booking and lifecycle management Fund accounting workflows (including NAV calculations) Investor and client reporting platforms Develop scalable, robust solutions using Java and SQL across a distributed, client-server architecture Work closely with business teams (operations, finance, client services) to understand requirements and translate them into technical … release processes Participate in architectural discussions, design reviews, and technical planning Support continuous improvement of tooling, processes, and system performance Role Requirements: Strong Java development experience Solid SQL/database knowledge (e.g. SQL Server, Snowflake or similar) Good understanding of client-server and distributed system architectures Proven ability to deliver ...

Principle Java Engineer

Hiring Organisation
Profile 29
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 75,000 Annual
Principle Java Engineer Salary to £ 7 0k + Company Options Scheme Hybrid working between your home, their offices (London Vauxhall) & client sites. NB: Please only apply if you are a UK National and able to achieve SC (ideally DV ) clearance i.e. you have at least 5 years residency ...

Java Software Engineer - Stablecoins

Hiring Organisation
Radley James
Location
London Area, United Kingdom
Leading institutional crypto trading firm who are growing their team in London and are looking for a new Java developer to work on stablecoins. The role covers from architecture to low-level development and is a unique opportunity to make an impact in a business that is projected … main player in the space. Requirements: 8+ years of hands-on experience developing in trading systems using Java Prior experience with Crypto is a requirement Strong preference for prior stablecoins experience Salary depends on experience. ...

IOT Engineer

Hiring Organisation
LA International Computer Consultants Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Daily
1. Design, implement and troubleshoot Internet of Things (IoT) solutions. 2. Collaborate with cross-functional teams to define IoT project requirements and specifications. 3. Integrate and onboard IoT devices onto the Network using DNA Center ...

Senior Java Engineer - Algorithmic Trading

Hiring Organisation
McGregor Boyall
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
actually be doing Building and enhancing algorithmic trading engines (VWAP, TWAP, SOR, internal crossing) Delivering framework-level improvements to a high-performance Java platform Working directly with quant traders to translate trading logic into production systems Contributing across the full lifecycle - design, build, optimisation and production support Driving performance … scalability improvements in a low-latency environment The tech environment Core Java (concurrency, NIO, GC tuning) Low latency/high throughput systems Event-driven architectures FIX and market connectivity Modern CI/CD tooling What they're looking for Strong Java engineers who understand performance, concurrency and real-time systems ...

Technical Consultant - Java Software Development

Hiring Organisation
MARBLE MAYNE RECRUITMENT LTD
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 100,000 Annual
Technical Consultant - Java Software Development Location: London Contract Type: Permanent Salary: circa £85,000 - £120,000 total compensation (salary + discretionary bonus) Are you a solutions and project focused Technical Consultant with a strong back-end coding background in Java or Python? Do you have excellent people skills and enjoy ...

Software Team Lead - eDV Cleared

Hiring Organisation
Searchability NS&D
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £100,000 per annum
forward to hearing from you. SOFTWARE TEAM LEAD - DV CLEARED KEY SKILLS: SENIOR SOFTWARE ENGINEER/SENIOR SOFTWARE DEVELOPER/LEAD SOFTWARE ENGINEER/JAVA DEVELOPER/JAVA ENGINEER/LEAD SOFTWARE DEVELOPER/SENIOR SOFTWARE DEVELOPER/DV CLEARED/DV CLEARANCE/DEVELOPPED VETTING/DEVELOPED VETTED/ ...

Data Analyst

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £510/day
main focus is understanding and documenting existing systems, with the goal of supporting decommissioning activities. The role centres on analysing current solutions built using Java, Node JS, and React, and developing a clear, end to end picture of how data flows across the wider programme. This includes documenting data flows … accurate and trusted. Experience working in cloud environments such as AWS or Azure is expected, with Databricks considered a nice to have. Required Skills: Java background Node JS Json RDS React Data Modelling Python/Spark Cloud experience (AWS/Azure) o AWS Glue o Databricks Testing e.g. PyTest Data ...

Software Engineer

Hiring Organisation
5V Video
Location
London Area, United Kingdom
Software Engineer (Java) – Broadcast/Video Technology Location: London Area - Hybrid Full-Time Contract Rates: Negotiable We are looking for a talented Software Engineer to join a growing engineering team within the broadcast technology sector . You’ll play a key role in building and supporting scalable backend systems that … software Monitoring system health and responding to issues in production environments Contributing to CI/CD pipelines and improving engineering workflows Technical Skills & Experience Java backend development Building and supporting APIs and microservices Databases such as Oracle and/or Couchbase Messaging and event-driven systems (e.g. Kafka , ActiveMQ, AmazonMQ ...

Senior QA Engineer (Innovative TechFirm!)

Hiring Organisation
Robert Half
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
solutions-focused Senior QA Engineer with strong experience in Selenium, Java, C#, or Python? Do you want to be part of an ambitious, innovative company experiencing rapid growth? This organisation grew headcount by 35% last year and has major plans for 2026/2027. This role is based in WEST … testing Work with deployment teams and resolve CI issues Requirements 8+ years' experience in QA Automation Strong manual and automation skills Experience in Python, Java, or C# UI and API automation knowledge Cross-functional team experience Benefits 25 days holiday 10% bonus Private healthcare Pension Training allowance Enhanced holiday entitlement ...

Observability Engineer

Hiring Organisation
Morson Edge (Financial Services)
Location
London Area, United Kingdom
Telemetry and Observability Engineer – OpenTelemery, SLI/SLO, Monitoring, Incident Response, Standards – Financial Services – Contract Up to £725p.d Inside Via Umbrella. My client, a leading financial service organisation, is currently seeking a Senior Telemetry and ...

Network IoT Engineer

Hiring Organisation
Initialize
Location
London Area, United Kingdom
Network IoT Engineer - London (Canary Wharf) - Hybrid - 12 months Requirements: Proven experience in IoT development, including firmware and software development. Strong working experience with Cisco SD Access, DNA and VxLAN is must. Strong understanding of ...

Senior Software Engineer

Hiring Organisation
Burns Sheehan
Location
City of London, London, United Kingdom
Senior Software Engineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £110,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Senior ...

Software Engineer - Multi-Strat Hedge Fund - AI Systems - £400k

Hiring Organisation
Paragon Alpha - Hedge Fund Talent Business
Location
City of London, London, United Kingdom
building applications that span all asset classes, underpin trading strategies, and impact hundreds of end users. They're looking for an excellent C# or Java Engineer (Codebase contains both languages), but also someone with AI, distributed systems and database exposure. Stack: C# or Java, Kubernetes, Kafka, React, LLMs The firm ...

Senior Software Engineer

Hiring Organisation
Pioneer Selection
Location
East London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
Pay rate will be circa £450 per day
multiple state-of-the-art automated facilities within the UK. You'll be based from home and will be focused on software development and JAVA development for highly automated distribution factories across the UK. The Senior software engineer will be involved in some high level software development projects within automated … warehouse environments. Non Negotiable skills required for the Senior Software Engineer 5 years minimum experience in JAVA development Extensive software development experience Understanding of distribution and automated warehouse environments Strong interpersonal skills to liaise with site teams, colleagues, and management effectively. The Senior Software Engineer will benefit from: Competitive ...

Senior Endur Developer: Greenfield v25 Endur Implementation: World Energy Co

Hiring Organisation
Eaglecliff Recruitment
Location
Greater London, England, United Kingdom
development opportunity for even the most experienced Endur Developers. *Senior Endur Developer that has experience in Endur platform enhancements/implementations and strong Core Java skills. *3 major releases: EU Gas, EU Power and then Global Emissions. *The overall program is broken down into squads. Typically 8-12 people with … Over 6 years current Endur Development experience as a Senior Endur Developer that has experience in Endur platform enhancements/implementations and strong Core Java skills. This needs combining with a positive attitude and an ability to work within a large, globally dispersed project team in a multi-cultural environment. ...

German Speaking Javascript Solutions Engineer - 90K + Bonus (Remote)

Hiring Organisation
WUNDERTALENT
Location
East London, London, United Kingdom
We’re looking for a skilled and enthusiastic JavaScript Solutions Engineer to play a key role in supporting our client's Sales, Project, Product and R&D teams in conducting technical discussions with online retailers ...

German Speaking Javascript Solutions Engineer - 90K + Bonus (Remote)

Hiring Organisation
WUNDERTALENT
Location
City of London, London, United Kingdom
We’re looking for a skilled and enthusiastic JavaScript Solutions Engineer to play a key role in supporting our client's Sales, Project, Product and R&D teams in conducting technical discussions with online retailers ...

Java Risk Engineer – Multi-strat Hedge Fund – £250k TC

Hiring Organisation
Saragossa
Location
City of London, London, United Kingdom
high-performance environment (and top of the class in their field), meaning your performance-related bonus will be better than most. They're a Java house, so previous experience building low-latency applications in Java is a must here. If you've got exposure/an understanding of Equities/ ...

Quantitative Developer

Hiring Organisation
L.Knighton
Location
City of London, London, United Kingdom
partnering with a leading Trading firm seeking a Senior Java Engineer to help develop and evolve the trading interfaces used by traders and risk teams across global markets on their most profitable trading desk. This role focuses on building high-performance, real-time trading applications , delivering intuitive tools that allow … directly by traders. These applications process high-frequency market data and provide tools for order entry, pricing, and risk monitoring. The role combines core Java engineering with front-end desktop development , working on applications built using Java Swing. You will collaborate closely with traders, quants, and backend engineers to build ...

Technical Lead

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £600/day £market rate
Technical Lead - Active SC, AWS, NodeJS, Java/Scala £Market rate London/Remote (Must be UK Based) My client is an International Consultancy who require a Technical Lead with Active Security Clearance (SC) and expertise across Typescript, NodeJS, AWS (Cloudwatch, Lambda, SQS, S3 etc), Terraform, PostgreSQL and Java/… experience as a Technical Lead, providing Technical Leadership, Coaching and Mentoring Technical skills - Typescript, NodeJS, AWS (Cloudwatch, Lambda, SQS, S3 etc), Terraform, PostgreSQL and Java/Scala Working knowledge of collaboration tooling (Jira/Slack/Teams/Figma) Involvement in Release preparation Excellent communication skills Nice to have: Immediate ...

Pentaho Developer

Hiring Organisation
Stackstudio Digital Ltd
Location
London, UK
Employment Type
Full-time
week Duration of Assignment:06 Months The Role In this role, you design and develop ETL workflows using Pentaho Data Integration, writing and optimizing Java and SQL code to support efficient data processing. You work closely with data engineers and analysts to deliver scalable, secure, and compliant data solutions while … overall solution architecture and delivery. Your Responsibilities (Up to 10, Avoid repetition) Design and develop ETL workflows using Pentaho Data Integration. Write and optimize Java and SQL code for data processing. Collaborate with data engineers and analysts to deliver solutions. Ensure data integrity, security, and compliance. Monitor and improve ...

Full Stack Engineer

Hiring Organisation
CBTS
Location
City of London, London, United Kingdom
days/week, 2 days/week WFH Years of Exp: 3-9 years Skills: Full Stack, Kotlin (essential), TypeScript (essential), CI/CD, Java £25-£40/hr depending on experience and assessment level, Inside IR35 Visa sponsorship is not available. Strong fundamentals of Computer Science to scale developments. … Excellent communication & interpersonal skills. Creative and a good team worker. Kotlin (or strong Java) & TypeScript mainly – full stack ideally. Fundamentals are very important. Data structures, algorithms & system designs. Online test will be given in the first instance. Successful candidates will go through a 2 round interview process. GitHub could help ...

Backend Engineer

Hiring Organisation
Skilliantech Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Role: Backend Engineer (ATA) Location: United Kingdom (Remote work) Skills: Java, AWS, Spring Boot, REST APIs,MySQL Job Summary: We are looking for a Backend Engineer to join the Core Portal team and build scalable backend services for an enterprise discovery application. You will design and develop robust APIs, integrate … with search and knowledge graph platforms, and ensure high performance, reliability, and security of backend systems. Key Responsibilities: Develop and maintain backend services using Java, Spring Boot, AWS Build and optimize REST and GraphQL APIs Ensure code quality through testing, refactoring, and best practices Own services end-to-end, including ...