Contract REST Jobs in London

1 to 25 of 26 Contract REST Jobs in London

Java Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Lorien
Collaborate with front-end developers to integrate APIs with React applications. Participate in code reviews, agile ceremonies, and continuous improvement initiatives. Tech Stack Backend: Java 17, Spring Boot, Kafka, REST APIs Frontend: React, TypeScript Cloud: AWS (ECS, Lambda, S3, CloudWatch) CI/CD: GitHub Actions, Docker, Terraform Databases: PostgreSQL, DynamoDB What We're Looking For 3+ years of experience in More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

System Integration Lead

London, United Kingdom
Opus Recruitment Solutions
5+ years of experience in IT service delivery with a focus on SAP BTP and API technologies. Strong hands-on experience with: SAP Integration Suite/CPI API protocols (REST, SOAP, gRPC) .NET, Java, or Python Cloud platforms (AWS or Azure) CI/CD tools (e.g., Jenkins, CircleCI) Data integration tools (e.g., SSIS, Azure Data Factory) Experience with microservices, Docker More ❯
Employment Type: Contract
Rate: £450 - £500/day
Posted:

Senior Golang Engineer

London, South East, England, United Kingdom
Hybrid / WFH Options
Salt Search
microservices and scalable features for a modern customer experience platform. Key Responsibilities: Develop and enhance scalable backend features using Golang (preferred) or another typed backend language Build microservices using REST and asynchronous messaging ( Kafka , RabbitMQ, etc.) Collaborate within Agile/Scrum teams to design and deliver high-quality, testable code Work on CI/CD pipelines with tools like Jenkins More ❯
Employment Type: Contractor
Rate: £330 - £350 per day
Posted:

Senior Site Reliability Engineer SRE / Unix

London, South East, England, United Kingdom
Morgan Hunt Recruitment
year, potentially outside core hours). Maintain CommVault backup administration (Oracle DB, RHEL, MongoDB). Monitoring & Observability Support logging & observability stacks (InfluxDB, Grafana, Prometheus, Nagios). Enhance monitoring via REST APIs, time-series databases, and full-stack tools (TICK, Elasticsearch, OpenSearch). Promote SLO/SLI measurement & tracking . Security & Compliance Drive security improvements & vulnerability remediation . Perform regular RHEL More ❯
Employment Type: Contractor
Rate: £550 per day
Posted:

SRE Engineer

London, South East, England, United Kingdom
Robert Walters
frameworks is advantageous for scaling operations smoothly.* Knowledge of leveraging APIs securely along with authentication mechanisms and data structures enhances your ability to integrate systems seamlessly.* Understanding microservice architectures, REST API design/development principles, Docker/Kubernetes containerisation technologies, and CI/CD integration is beneficial. Robert Walters Operations Limited is an employment business and employment agency and welcomes More ❯
Employment Type: Contractor
Rate: £400 - £500 per day
Posted:

Senior ServiceNow Developer

East London, London, England, United Kingdom
eTeam Inc
Role Description:Skills Required:• Understanding of the key technologies relevant to the ServiceNow integration solutions including: SSO, SAML, SSL, Web Services, LDAP, JDBC, ODBC, REST, SOAP, SCP, FTPS, JSON• ServiceNow Developer certification is a plus• Experience with other ITSM software (BMC Remedy ITSM, HP, Landesk, etc.)• Experience with orchestration tools (ex. HP Operations Orchestrator, BMC Atrium Orchestrator)• Micro-services architecture More ❯
Employment Type: Contractor
Rate: £500 per day
Posted:

Senior ServiceNow Developer- MUST HOLD SC or NPPV3 CLEARANCE

London, United Kingdom
eTeam Workforce Limited
557GBP/Day(Inside IR35) Role Description: Skills Required: Understanding of the key technologies relevant to the ServiceNow integration solutions including: SSO, SAML, SSL, Web Services, LDAP, JDBC, ODBC, REST, SOAP, SCP, FTPS, JSON ServiceNow Developer certification is a plus Experience with other ITSM software (BMC Remedy ITSM, HP, Landesk, etc.) Experience with orchestration tools (ex. HP Operations Orchestrator, BMC More ❯
Employment Type: Contract
Rate: GBP Daily
Posted:

Software Developer - Full Stack (C++ & Angular)

Hounslow, London, United Kingdom
Deerfoot Recruitment Solutions
professional software development. Expert in C++11 or later , with a strong grasp of memory management, OOP, and concurrency. Skilled in AngularJS , HTML/CSS , and JavaScript . Experience with REST APIs , JSON, and version control (Git). Solid understanding of Agile frameworks (Kanban, Scrum). Why Join Us? Work on industry-defining self-service technologies Collaborate with top-tier engineers More ❯
Employment Type: Contract
Rate: Up to £380 per day
Posted:

Software Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
VIQU Limited
.NET and C# Proficiency building and customising Model-Driven Apps and Canvas Apps (Power Apps experience). Strong working knowledge of SQL and Microsoft Dataverse Experience developing and consuming REST APIs, including the Dataverse Web API and Microsoft Graph API Proven experience writing Windows scripts (e.g. PowerShell, batch scripting) Agile (SCRUM) Azure DevOps Strong communication skills and a collaborative mindset More ❯
Employment Type: Contractor
Rate: £300 - £330 per day
Posted:

Senior Systems Engineer - Github

City, London, United Kingdom
Hybrid / WFH Options
IntaPeople
AI). Collaborate with internal DevOps, Security and Platform teams. What You ll Need: Strong coding skills in Go, Python or Java. Deep experience with GitHub Enterprise, GitHub APIs (REST & GraphQL), Actions, and Apps. Background in Ops, Infrastructure or SRE roles with a focus on automation. Familiarity with modern SDLC practices, security tooling, version control and testing frameworks. Experience using More ❯
Employment Type: Contract
Rate: GBP 500 - 600 Daily
Posted:

Senior Systems Engineer - Github

London, Coleman Street, United Kingdom
Hybrid / WFH Options
IntaPeople
AI). Collaborate with internal DevOps, Security and Platform teams. What You’ll Need: Strong coding skills in Go, Python or Java. Deep experience with GitHub Enterprise, GitHub APIs (REST & GraphQL), Actions, and Apps. Background in Ops, Infrastructure or SRE roles with a focus on automation. Familiarity with modern SDLC practices, security tooling, version control and testing frameworks. Experience using More ❯
Employment Type: Contract
Rate: £500 - £600/day
Posted:

Power Apps Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Morgan Law
and supporting production Power Apps & Dataverse solutions Hands-on integration with Integra (finance), Axiom (budget management), Northgate/Zellis (HR and payroll) or similar finance/HR systems via REST or OData APIs Proficient in Power Fx, JavaScript/TypeScript, .NET C#, T-SQL, DAX and JSON Experience with Azure Functions, Logic Apps, Service Bus, API Management and DevOps pipelines More ❯
Employment Type: Contractor
Rate: £550 - £650 per day
Posted:

Automation Tester

London, South East, England, United Kingdom
Hybrid / WFH Options
Lorien
with framework development and maintenance. Experience with tools such as Selenium, UiPath, Cypress, JUnit. Strong understanding of QA methodologies, tools, and processes. Experience with RESTful API testing (e.g., Postman, REST Assured). Familiarity with CI/CD tools (e.g., Jenkins, GitHub Actions, GitLab CI). Attention to detail and strong problem-solving skills. Understanding of BDD/TDD practices and More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Azure Logic Apps Developer

London, United Kingdom
Innovative Tech People
Pages Hands-on experience with Dynamics 365 Customer Engagement (D365 CE), including entity customisation and integration. Proficiency in Power Automate, Dataverse, and Common Data Service (CDS). Familiarity with REST APIs, JSON, and OData. Experience with Azure services such as Azure Functions, Service Bus, and Key Vault is a plus. Strong problem-solving skills and attention to detail. Preferred Qualifications More ❯
Employment Type: Contract
Rate: £300 - £475/day
Posted:

SOAR Engineer/Analyst (Google SecOps)

City of London, London, England, United Kingdom
Gibbs Hybrid
Splunk SOAR, IBM Resilient). Strong familiarity with: Google SecOps/Chronicle Darktrace (AI-based threat detection) CrowdStrike Falcon platform Scripting experience in Python, PowerShell, or Bash. Experience with REST APIs and JSON for tool integration. Working knowledge of incident response frameworks and MITRE ATT&CK. Strong problem-solving, critical thinking, and communication skills. Desirable Qualifications Experience with CI/ More ❯
Employment Type: Contractor
Rate: £450 - £495 per day
Posted:

Automation Test Engineer - Salesforce & Copado

London, South East, England, United Kingdom
BOSS Professional Services LTD
such as Selenium, Provar, or similar. Familiarity with testing Salesforce components including Apex classes, Visualforce pages, and Lightning components. Strong grasp of API testing methodologies and tools (e.g. Postman, REST Assured). Ability to write and maintain test documentation: plans, scenarios, and reports. Experience working in Agile development environments using tools like Jira or other DevOps tools. Desirable Skills Exposure More ❯
Employment Type: Contractor
Rate: £350 - £550 per day
Posted:

Salesforce Developer - Contract - Inside IR35 - Remote

London, South East, England, United Kingdom
Hybrid / WFH Options
Involved Solutions
Salesforce development, including Apex, Visualforce, and Lightning Components. Salesforce Developer certification (e.g., Salesforce Certified Platform Developer I/II) is highly desirable. Hands-on experience with Salesforce integrations using REST/SOAP APIs, web services, and middleware tools. Demonstrable experience of building effective business solutions using Salesforce technologies Ability to communicate effectively with both technical and non-technical colleagues. Experience More ❯
Employment Type: Contractor
Rate: £400 - £500 per day
Posted:

Oracle Fusion Support Analyst

London, South East, England, United Kingdom
Precise Placements
General Ledger, and Order Management Perform small development/configuration changes and lead regression testing for quarterly updates Manage and maintain integrations via Oracle Integration Cloud (OIC) , working with REST/SOAP APIs Deliver and support reports using OTBI, BI Publisher , and other reporting tools Support system users, deliver training, and act as internal SME for Oracle Fusion ERP What More ❯
Employment Type: Contractor
Rate: £550 - £590 per day
Posted:

Netsuite SuiteCommerce Advanced (SCA) Contractor

London, United Kingdom
Eclipse I.T. Recruitment
and working in a structured development environment Nice to have (but not essential): NetSuite certifications (eg SuiteCloud Developer, SuiteFoundation) Experience working in retail/eCommerce businesses API integration experience (REST/SOAP) A good eye for Front End detail - performance, accessibility, responsive design More ❯
Employment Type: Contract
Rate: GBP Annual
Posted:

Contract Technical BA, Settlements

City of London, London, United Kingdom
Adecco
or broker-dealer operations. Strong knowledge of securities industry flows, particularly SWIFT MT/MX messaging related to trading, clearing, and settlement. Hands-on technical proficiency in Linux, SQL, REST API integrations, and related technologies. Ability to read and interpret interface specifications effectively. Proven capability to analyse and generate scope and business requirements documents. Strong aptitude for breaking down product More ❯
Employment Type: Contract
Posted:

Contract Technical BA, Settlements

London, South East, England, United Kingdom
Adecco
or broker-dealer operations. Strong knowledge of securities industry flows, particularly SWIFT MT/MX messaging related to trading, clearing, and settlement. Hands-on technical proficiency in Linux, SQL, REST API integrations, and related technologies. Ability to read and interpret interface specifications effectively. Proven capability to analyse and generate scope and business requirements documents. Strong aptitude for breaking down product More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Salesforce Developer / Technical Architect - PE/Fund Admin

London, South East, England, United Kingdom
Eames Consulting
where relevant) Contribute to architecture decisions, governance, and performance optimisation across the Salesforce estate Requirements: Extensive Salesforce development experience (APEX, LWC, Experience Cloud) Strong understanding of Salesforce integration patterns (REST/SOAP APIs, MuleSoft) Background in Financial Services or Private Equity/Fund Administration preferred Experience designing systems aligned to regulatory obligations (e.g. tax, KYC, investor onboarding) is highly desirable More ❯
Employment Type: Contractor
Rate: £550 - £750 per day
Posted:

AWS Engineer

City of London, London, United Kingdom
Hybrid / WFH Options
Queen Square Recruitment Limited
This includes developing RESTful APIs, managing serverless applications, and driving AWS infrastructure through Terraform automation . Key Responsibilities: Design and develop scalable, service-oriented AWS architectures. Build and maintain REST APIs using AWS Lambda , API Gateway , and more. Automate infrastructure deployment using Terraform . Work with a wide range of AWS services: S3, IAM, Athena, Glue, SQS, SageMaker , and more. More ❯
Employment Type: Contract
Rate: Up to £500 per day DOE Inside IR35
Posted:

Alfresco Developer - ADF, ECM, Alfresco

London, United Kingdom
Hybrid / WFH Options
Hays
ADF) Use of Alfresco APIs for application integration and extension Working knowledge of how to utilise Alfresco APIs for application integration and extension (ERP, CRM) Proficient in Alfresco APIs (REST, CMIS). Deep understanding of Solr for content indexing and search performance Nice to have: An understanding of Records Management in Alfresco Experience in Performance tuning, storage optimisation and scaling More ❯
Employment Type: Contract, Work From Home
Rate: £250.0 - £270.0 per day + up to £270pd (inside IR35)
Posted:

Alfresco Developer - ADF, ECM, Alfresco

London, South East, England, United Kingdom
Hybrid / WFH Options
Hays Specialist Recruitment Limited
ADF) Use of Alfresco APIs for application integration and extension Working knowledge of how to utilise Alfresco APIs for application integration and extension (ERP, CRM) Proficient in Alfresco APIs (REST, CMIS). Deep understanding of Solr for content indexing and search performance Nice to have: An understanding of Records Management in Alfresco Experience in Performance tuning, storage optimisation and scaling More ❯
Employment Type: Contractor
Rate: £250 - £270 per day
Posted:
REST
London
10th Percentile
£361
25th Percentile
£419
Median
£550
75th Percentile
£672
90th Percentile
£750