1 to 25 of 37 Remote/Hybrid Contract Java Jobs in London

Senior Java Microservices AWS Developer - 6-Month Contract - Hybrid (London)

Hiring Organisation
Hamilton Barnes
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Daily
Senior Java Microservices AWS Developer - 6-Month Contract - Hybrid (London) We're looking for an experienced Senior Java Backend Developer to work on the design and delivery of large-scale, cloud-native applications within a complex enterprise environment. The role is hands-on and will focus on building and evolving … Java microservices on AWS as part of a wider platform modernisation programme. Key Responsibilities Design and develop Back End services using modern Java (Java 11+), Spring Boot, and microservices architecture. Build and maintain RESTful APIs for distributed, enterprise-grade systems. Develop scalable, high-performance microservices following best-practice design patterns. ...

Principal Developer / Architect

Hiring Organisation
IntaPeople
Location
Remote, Sutton South, Greater London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £620/day
Strong background in distributed, cloud‑native, and data‑intensive systems. Deep AWS experience (essential). Strong data modelling and data architecture skills. Expertise in Java, Spring Boot, REST/event‑driven services; good knowledge of Angular/Node.js. Solid understanding of CI/CD, IaC (Terraform/CloudFormation), containers (Docker ...

Application Security Engineer

Hiring Organisation
Atrium Global
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £550 to £650 per day
landscape: CVEs, CWEs, common software vulnerability types SAST, SCA, and DAST, including the strengths and weaknesses of each At least one programming language (e.g. Java, Go) At least one major cloud provider (e.g. AWS, GCP, Azure) REST API design HTTP Authentication Linux at the terminal, including scripting and automation (e.g. ...

Senior Azure API Engineer

Hiring Organisation
Vermillion Analytics
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £750/day
Azure Deep expertise in Azure API Management Strong OpenAPI, RESTful API design, and security protocols (OAuth 2.0, JWT, TLS) Proficiency in Node.js/Java/C# and modern integration patterns Experience with CI/CD, monitoring tools, and DevOps practices Security and quality-first mindset Bonus Points: Azure Databricks, Data ...

Cloud Security Engineer

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £350 to £400 per day
benchmarks (e.g., CIS, GDPR, PCI-DSS, ISO standards) and industry cloud security standards (e.g., NIST, CSA) Proficiency in coding and workload languages (e.g., Python, Java, .NET) and practical understanding of various cloud models (IaaS, PaaS, SaaS) Excellent documentation, presentation, and analytical skills with the ability to convey technical concepts ...

AWS DevOps / Platform Engineer - DV Cleared

Hiring Organisation
Network IT
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£600 - £640 per day
/Lambda/EKS and CDK - Awareness of networking and security principles when applied to AWS cloud infrastructure - Docker/Kubernetes - Python/Java - SQL Databases - Integration of 3rd party software - Must be a British Citizen, with DV clearance or a record of DV clearance ...

Senior Engineer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
drive progress, and work within a structured delivery framework while maintaining a clear focus on product impact and customer outcomes. Core Technical Skills Skills Java and/or Kotlin Micronaut or Spring Boot Experience building and supporting distributed systems React/Next.js AWS and/or Azure experience Experience Identity ...
Hybrid / Remote Options View Job ❯

Senior Engineer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
drive progress, and work within a structured delivery framework while maintaining a clear focus on product impact and customer outcomes. Core Technical Skills Skills Java and/or Kotlin Micronaut or Spring Boot Experience building and supporting distributed systems React/Next.js AWS and/or Azure experience Experience Identity ...

FX e Trading Senior Full Stack Engineer (React TypeScript + Java)

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£759 - £900 per day
Contract Role – FX e Trading Senior Full Stack Engineer (React TypeScript + Java) – London/Hybrid – 12 months initial – Inside IR35 As a FX e Trading Senior Full Stack Engineer (React TypeScript + Java) as a technically strong, hands-on engineer who understands both trading workflows and modern full-stack … lead delivery of a mission-critical trading platform. Role Overview: Job Title: FX e Trading Senior Full Stack Engineer (React TypeScript + Java) Location: Hybrid – up to 4 days onsite per week in London Contract Type: Contract Duration: 12 months initial Rate: £759.49 – 900 per day (Inside IR35) Sector: Banking ...

Salesforce &/ React Native Developer

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £550 per day
Rate: £500-550 per day (Inside IR35) Sector: Banking Key Skills & Experience Salesforce +5 years experience AND/OR React Native (Web) +5 years Java +5 years TDD, BDD RESTful API design & build OAS/YAML Unit Testing GitLab CI/CD Pipelines Agile practitioner, SonarQube, Veracode, Jira, Confluence Banking ...

Senior Full Stack Engineer – FX e-trading – Java / React

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£759 - £900 per day
Senior Full Stack Engineer – FX e-trading – Java/React Duration: 12 months Pay: £759-900/day (PAYE/umbrella) Location: London (hybrid working – 2 days onsite) Senior Full-Stack Engineer – FX e-Trading (React/TypeScript + Java) About the role Help architect and build … What you’ll do Lead design and development of full-stack features: React/TypeScript web apps, desktop container integrations (OpenFin or similar), and Java services. Architect and implement scalable, event-driven, and microservices-based backend components (e.g., Spring Boot), including APIs, market data, order/risk workflows, and real ...

Developer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £522 per day
more. Skills & Experience required Skills: 2-5 years development experience, systems administration experience for J2EE applications, JBoss, Jenkins, Ansible, Git, Agile Scrum Experience. Technologies: Java, Spring Framework, Web Services, JMS, MDB, Junit, JIRA ...

Quality Analyst - Mobile

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
strong Business Knowledge. Strong and clear Communication Skills. Experienced working within Banking/Ecommerce. Knowledge and Experience of: Test Case Management Jira/Zephyr Java/Appium IND_PC3 Guidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy. ...

Senior Tester Mobile Apps Contract Inside IR35

Hiring Organisation
Interact Consulting Limited
Location
South West London, London, United Kingdom
Employment Type
Contract
collaborative. Confident testing across iOS, Android, Windows, and macOS. Experienced in release test planning and coordination. Hands-on technical understanding of code (Swift, Kotlin, Java, Objective-C). Skilled in diagnosing test failures and mentoring others. Advocates for Quality Engineering and Shift-Left practices. Desirable: Experience with A/ ...

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 ...

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 ...

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 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 ...

Lead Technical Architect

Hiring Organisation
BrightBox Group
Location
London, Oakengates, Shropshire, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £625/day remote outside IR35
Architect Contract 4 Months Initially £600-£625pd (Outside IR35) Remote We are seeking a skilled Technical Architect with a strong background in WSO2 and Java to join our team. In this role, you will be responsible for designing and implementing technical solutions that meet the needs of our government clients ...

Lead Golang Developer Software Engineer Finance Trading London

Hiring Organisation
Joseph Harry Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 650 - 850 Daily
Asset Manager Investment Management Finance Front Office Trading Financial Services UI Front End Front End EMS OMS Execution Order Management System Portfolio Golang Go Java AWS Kafka) required by our trading software client in London. You MUST have the following: Strong experience as a Lead Full-Stack Developer/Software … ideas into technical solutions Excellent stakeholder interaction skills Agile The following is DESIRABLE, not essential: JavaScript and TypeScript Ag-Grid and GraphQL Python or Java Role: Lead Golang Developer (Software Engineer Programmer Developer ReactJS React-JS React.JS GraphQL Playwright TypeScript Redux Saga Ag-Grid Fixed Income JavaScript Node Credit Rates ...

Full Stack Developer

Hiring Organisation
Reed
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£490 - £530 per day, Inc benefits
Developer to join our team on a short-term contract. This role involves both front-end and back-end development, requiring strong skills in Java, Python, and API development. You will be instrumental in building and maintaining scalable, high-quality applications that deliver exceptional user experiences. … front-end and back-end components of applications. Collaborate with project teams to design and implement functional, robust applications. Write clean, scalable code using Java, Python, and other relevant technologies. Integrate user-facing elements with server-side logic and functionality. Ensure the performance, quality, and responsiveness of applications. Troubleshoot, debug ...

Mainframe Developer with CICS Webservices

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £350 to £400 per day
with DevOps and Agile methodologies and associated toolsets and practices, including CI/CD and Jenkins. Desirable Skills/Knowledge/Experience Option 1: Java-Based Skills Java skill set. Strong foundation in Java, including OOP and functional programming (Java 8+). Familiarity with Spring Boot annotations, configuration ...

Senior Java Developer

Hiring Organisation
Hays
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£900.0 - £925 per day + Up to £925pd Umbrella
currently working with a London-based Commodities client who are actively seeking a Senior Java Developer to work on the development of a business-critical pre-trade platform. What you'll need to succeed : Extensive Java development experience within investment banking or commodities - must have. Extensive Kafka experience. Working knowledge ...

Senior Java Kafka Developer

Hiring Organisation
Hays
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£700.0 - £750.0 per day + Up to £750pd Umbrella
currently working with a London-based Commodities client who are actively seeking a Senior Java Developer to work on the development of a business-critical pre-trade platform. What you'll need to succeed : Extensive Java development experience within investment banking - Must have. Extensive Kafka experience. Strong experience with data ...

Java Developer - AI first development

Hiring Organisation
Harvey Nash
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £550 per day
Senior Java Developer - AI first - sought by trading company based in London - Contract (OUTSIDE IR35 - Remote option available for outstanding candidates) What We're Looking For Backend Engineering Expertise 8+ years of software engineering experience with strong Java backend skills. Proven track record in modernising production systems and designing APIs ...