11 of 11 Contract Java Jobs in Central London

Senior Test Engineer (SC Cleared)

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650/day
solutions across the full lifecycle Hands-on expertise with Microsoft-based environments (e.g. Azure testing tools, AI platforms) Proficiency in one or more: Python, Java, JavaScript, SQL, or R Proven experience in: AI/Generative AI testing RAG (Retrieval-Augmented Generation) solution validation (e.g. RAGAS framework) CI/CD, DevOps ...

Data Engineer

Hiring Organisation
Randstad Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£300 - £400/day
Data Engineer you will have the following key skills Cloud: GCP Warehousing: BigQuery/Snowflake Orchestration: Airflow Backend: Python, SQL, Shell Languages: Scala/Java DevOps: Terraform, Docker, Kubernetes Observability: Monte Carlo BI: Looker AI/ML: MLOps London | 12 Months Contract |£400 a day Inside IR35 If you want ...

Blockchain Architect/lead

Hiring Organisation
Randstad Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£350 - £500/day Negotiable
proficiency with Ethereum, Hyperledger, or Corda , alongside smart contract development languages ( Solidity, Chaincode, DAML, or Rust ). Core Development: Strong background in languages like Java, Python, Go, or Rust . Cloud & DevOps: Solid understanding of modern cloud platforms ( AWS, Azure, or GCP ) and automated CI/CD deployment pipelines. Industry ...

Data Engineer

Hiring Organisation
Huxley Associates
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500/hour
Working within a cloud-based, containerised environment (Kubernetes) Contributing to a wider data platform modernisation programme Supporting both batch and streaming workloads Tech: Python, Java, Spark, Airflow, SQL, Cloud (AWS/Azure), Kubernetes (Kafka/streaming nice to have) Details: £700/day (Umbrella) 6-month contract 3 days onsite ...

Blockchain Architect

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550/day
Strong hands-on experience with blockchain platforms (Ethereum, Hyperledger, Corda, or similar). Proficiency in smart contract development and modern programming languages (e.g. Solidity, Java, Python, Go, Rust). Experience designing and delivering distributed systems and API-driven architectures. Knowledge of cloud platforms (Azure, AWS, GCP) and DevOps practices. Strong ...

Platform AWS Engineer (SC Cleared)

Hiring Organisation
Hays Technology
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£492/day £492 per day INSIDE IR35
repositories, branching, merge requests, and code reviews Sound understanding of networking concepts including IP addressing, CIDRs, TCP/IP, and TLS certificates Experience supporting Java applications, JVMs, and process management Nginx administration, particularly as a reverse proxy Performance tuning and capacity management across CPU, memory, and storage Experience with OpenVPN ...

Infrastructure Engineering Specialist - DV Cleared

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£350 - £650/day
VCentre, vCF) Windows/Linux/Mac Server management Containers/Kubernetes/VKS Networking and Storage Management Scripting languages (PowerShell, Bash, Python, Java) Automated system build tools (Ansible, Puppet, Terraform, etc.) Configuration management and CI workflows (git, subversion) Business Acumen: Contribute to the formulation of engineering strategy and influence ...

Senior Backend Engineer (Java/.Net & Microservices)

Hiring Organisation
ARM
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550/day Inside IR35
Senior Backend Engineer (.NET/Java Microservices) Contract: Inside IR35 Duration: 6 Months+ Hybrid - 2 days per week on site in London We're seeking a Senior Backend Engineer to design, build and enhance scalable backend services and APIs within a complex enterprise environment. You'll play a key role … delivering modern microservices while contributing to technical design and engineering best practice. Key Responsibilities Design and develop backend services using C#/.NET and Java (Spring Boot) . Build and support REST APIs and microservices. Contribute to architecture, technical design and system integration. Troubleshoot, optimise and support production systems. Collaborate ...

DevOps Engineer

Hiring Organisation
Hays Technology
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£650 - £750/day £650-£750 Umbrella PAYE
Ansible. Strong knowledge of CI/CD pipelines , particularly GitLab CI/CD. Working knowledge of at least one object-oriented programming language (e.g., Java). Deploying and managing Java Spring applications using Maven. Core Competencies: Highly proactive and ability to take ownership Experience working in a fast-paced environment ...

IAM Technical SME

Hiring Organisation
International Military Ministries
Location
City of London, London, United Kingdom
Employment Type
Contract
IAM Technical SME 12-Month Contract (Inside IR35) Location: London, United Kingdom (Hybrid 4 days per week onsite) Contract Length: 12 months Start Date: ASAP Employment Type: Contract (Inside IR35) Role Overview We are seeking ...

Backend Engineer

Hiring Organisation
Randstad Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £500/day Market Rate/ Negotiable
Title: Senior Backend Engineer (Go/Java) - Global Fintech Contract Location: Central London (Hybrid, 3 days in-office) Engagement: Contract with potential to convert to permanent Rate: Competitive The Role: You will join a critical API team responsible for high-throughput backend services and real-time payment routing decisions. This … considered, please send your CV to Yogeshwari . sen @ randstaddigital. com along with a brief note on your experience with Go/Java and high-volume distributed systems. Randstad Technologies is acting as an Employment Business in relation to this vacancy. ...