Java contracts in London

20 open Java contracts in London, typically £425–£725 a day.

Open contracts: 20
Typical day rate: £425–£725Median £600, from 19 contracts stating a rate
Outside IR35: 24%of the 17 that state a status

At the median £600 a day over 220 working days, you'd take home about £79,586 a year outside IR35, or £74,331 inside IR35. Work out your own take-home pay

20 contracts found

Senior Backend DeveloperHybrid
Financial services organisation
£500–£600/dayOutside IR35
London · 6 months · Posted 5 days ago
- Java
- Spring / Spring Boot
- AWS
- Microservices
- REST APIs
- +9 more
Lead Solutions Architect (Legacy to Cloud)Remote
Large, complex organisation
£500–£800/dayInside IR35
London · 6 months · SC clearance · Posted 5 days ago
- Java
- Solution architecture
- Cloud architecture
- Migration
- Oracle Database
- +6 more
Software Development EngineerHybrid
Airline operations software team
£350–£430/dayInside IR35
Hounslow · 12 months · Posted 5 days ago
- Java
- Microservices
- Angular
- TypeScript
- Kafka
- +8 more
Technology Lead - AWS, JavaRemote
Unspecified
£400–£450/dayOutside IR35
London · 6 months · Posted 7 days ago
- Java
- AWS
- Cloud architecture
- Cloud native
- DevOps
- +7 more
Software Engineer - High-Performance Java / Low LatencyHybrid
Financial services firm focused on agency liquidity and principal risk
£400–£450/dayInside IR35
London · Posted 13 days ago
- Java
- Linux
Senior Java DeveloperHybrid
Global Markets Futures & Options and Collateral business
£750–£800/dayInside IR35 (implied)
Bromley · 12 months · Posted 14 days ago
- Java
- Spring / Spring Boot
- Microservices
- Oracle Database
- SQL
- +7 more
2 adverts
Senior KDB+/q DeveloperHybrid
Global financial institution
£349–£465/dayInside IR35
London · 3 months · Posted 14 days ago
- Java
- Kafka
- Python
- Linux
2 adverts
SC cleared Junior Data EngineerHybrid
Central government
£300–£395/dayIR35 not stated
London · SC clearance · Posted 19 days ago
- Java
- Data engineering
- Python
- Kafka
- Kubernetes
- +4 more
2 adverts
Software Engineering ManagerHybrid
Leading UK wealth and investment platform
£700–£750/dayIR35 not stated
London · 6 months · Posted 20 days ago
- Java
- TypeScript
- AWS
- Microservices
- Event-driven architecture
- +2 more
Engineering Manager, Java, AWSHybrid
Large-scale cloud-based platforms and services company
£700–£750/dayInside IR35
London · 6 months · Posted 21 days ago
- Java
- AWS
- Agile
- CI/CD
- Docker
- +7 more
Lead Data Engineer
Major public safety initiative
£350–£427/dayInside IR35
London · 13 months · SC clearance · Posted 26 days ago
- Java
- Data engineering
- AWS
- Kafka
- Kubernetes
2 adverts
Principal EngineerRemote
Innovative, technology-led organisation
Rate not statedOutside IR35
London · Posted 27 days ago
- Java
- Docker
- CI/CD
- DevOps
- Kubernetes
Senior Full Stack DeveloperHybrid
Banking
£500–£700/dayInside IR35
London · 9 months · Posted 27 days ago
- Java
- Kotlin
- React
- TypeScript
- Test-driven development
- +4 more
Senior eTrading Developer - Rates
Investment bank or trading firm
£750–£800/dayIR35 not stated
London · Posted 27 days ago
- Java
- Spring / Spring Boot
- Kubernetes
- Docker
- Trading systems
Java Application ArchitectHybrid
Insurance sector
£580–£620/dayInside IR35
London · 3 months · Posted 32 days ago
- Java
- Migration
- Technical architecture
- Insurance
- DevOps
- +4 more
Senior Full Stack DeveloperOn site
High-performing engineering team building modern enterprise applications
£700–£750/dayInside IR35
London · 12 months · Posted 35 days ago
- Java
- Agile
- Spring / Spring Boot
- REST APIs
- Microservices
- +7 more
VP Full Stack EngineerOn site
Financial technology company
£632–£750/dayInside IR35
London · 12 months · Posted 35 days ago
- Java
- Angular
- TypeScript
- JavaScript
- Solidity
- +2 more
Senior/Lead AI Software Engineer Java & PythonHybrid
Enterprise client in financial services or securities
£843–£1,000/dayInside IR35
London · 12 months · Posted 40 days ago
- Java
- Python
- Machine learning
- LLMs / generative AI
- Process improvement
QA EngineerHybrid
£400–£475/dayInside IR35
London · 6 months · Posted 42 days ago
- Java
- Test automation
- Selenium
- API testing
- BDD / Cucumber
2 adverts
Senior Java Architect – PaymentsHybrid
Global financial services organisation undergoing banking transformation
£550–£600/dayOutside IR35
London · 6 months · Posted 51 days ago
- Java
- Microservices
- Swift
- Spring / Spring Boot
- Kafka
- +4 more
4 adverts

Contracts, sorted by Posted, newest first. Page 1 of 1.
Role: sort by Role, A to Z	IR35: sort by IR35, outside IR35 first	Rate: sort by Rate, highest first	Location: sort by Location, A to Z	Contract length: sort by Contract length, longest first	Posted: sort by Posted, oldest first
Senior Backend Developer Financial services organisation Java Spring / Spring Boot AWS Microservices REST APIs +9 more	Outside IR35	£500–£600/day	London · Hybrid	6 months	5 days ago
Lead Solutions Architect (Legacy to Cloud) Large, complex organisation Java Solution architecture Cloud architecture Migration Oracle Database +6 more	Inside IR35	£500–£800/day	London · Remote	6 months SC clearance	5 days ago
Software Development Engineer Airline operations software team Java Microservices Angular TypeScript Kafka +8 more	Inside IR35	£350–£430/day	Hounslow · Hybrid	12 months	5 days ago
Technology Lead - AWS, Java Unspecified Java AWS Cloud architecture Cloud native DevOps +7 more	Outside IR35	£400–£450/day	London · Remote	6 months	7 days ago
Software Engineer - High-Performance Java / Low Latency Financial services firm focused on agency liquidity and principal risk Java Linux	Inside IR35	£400–£450/day	London · Hybrid	Not stated	13 days ago
Senior Java Developer Global Markets Futures & Options and Collateral business Java Spring / Spring Boot Microservices Oracle Database SQL +7 more 2 adverts	Inside IR35 (implied)	£750–£800/day	Bromley · Hybrid	12 months	14 days ago
Senior KDB+/q Developer Global financial institution Java Kafka Python Linux 2 adverts	Inside IR35	£349–£465/day	London · Hybrid	3 months	14 days ago
SC cleared Junior Data Engineer Central government Java Data engineering Python Kafka Kubernetes +4 more 2 adverts	IR35 not stated	£300–£395/day	London · Hybrid	Not stated SC clearance	19 days ago
Software Engineering Manager Leading UK wealth and investment platform Java TypeScript AWS Microservices Event-driven architecture +2 more	IR35 not stated	£700–£750/day	London · Hybrid	6 months	20 days ago
Engineering Manager, Java, AWS Large-scale cloud-based platforms and services company Java AWS Agile CI/CD Docker +7 more	Inside IR35	£700–£750/day	London · Hybrid	6 months	21 days ago
Lead Data Engineer Major public safety initiative Java Data engineering AWS Kafka Kubernetes 2 adverts	Inside IR35	£350–£427/day	London	13 months SC clearance	26 days ago
Principal Engineer Innovative, technology-led organisation Java Docker CI/CD DevOps Kubernetes	Outside IR35	Not stated	London · Remote	Not stated	27 days ago
Senior Full Stack Developer Banking Java Kotlin React TypeScript Test-driven development +4 more	Inside IR35	£500–£700/day	London · Hybrid	9 months	27 days ago
Senior eTrading Developer - Rates Investment bank or trading firm Java Spring / Spring Boot Kubernetes Docker Trading systems	IR35 not stated	£750–£800/day	London	Not stated	27 days ago
Java Application Architect Insurance sector Java Migration Technical architecture Insurance DevOps +4 more	Inside IR35	£580–£620/day	London · Hybrid	3 months	32 days ago
Senior Full Stack Developer High-performing engineering team building modern enterprise applications Java Agile Spring / Spring Boot REST APIs Microservices +7 more	Inside IR35	£700–£750/day	London · On site	12 months	35 days ago
VP Full Stack Engineer Financial technology company Java Angular TypeScript JavaScript Solidity +2 more	Inside IR35	£632–£750/day	London · On site	12 months	35 days ago
Senior/Lead AI Software Engineer Java & Python Enterprise client in financial services or securities Java Python Machine learning LLMs / generative AI Process improvement	Inside IR35	£843–£1,000/day	London · Hybrid	12 months	40 days ago
QA Engineer Java Test automation Selenium API testing BDD / Cucumber 2 adverts	Inside IR35	£400–£475/day	London · Hybrid	6 months	42 days ago
Senior Java Architect – Payments Global financial services organisation undergoing banking transformation Java Microservices Swift Spring / Spring Boot Kafka +4 more 4 adverts	Outside IR35	£550–£600/day	London · Hybrid	6 months	51 days ago

Contracts come from job boards and employers' own careers sites, updated hourly. IR35 status is as stated in each advert: always confirm it with the hirer.

Java contracts in London

Selected filters

20 contracts found

Senior Backend DeveloperHybrid

Lead Solutions Architect (Legacy to Cloud)Remote

Software Development EngineerHybrid

Technology Lead - AWS, JavaRemote

Software Engineer - High-Performance Java / Low LatencyHybrid

Senior Java DeveloperHybrid

Senior KDB+/q DeveloperHybrid

SC cleared Junior Data EngineerHybrid

Software Engineering ManagerHybrid

Engineering Manager, Java, AWSHybrid

Lead Data Engineer

Principal EngineerRemote

Senior Full Stack DeveloperHybrid

Senior eTrading Developer - Rates

Java Application ArchitectHybrid

Senior Full Stack DeveloperOn site

VP Full Stack EngineerOn site

Senior/Lead AI Software Engineer Java & PythonHybrid

QA EngineerHybrid

Senior Java Architect – PaymentsHybrid