18 of 18 Contract Middleware Jobs in London

SAP Technical Architect

Hiring Organisation
Hirexa Solutions UK
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£350 - £400 per day
landscape design, system copying, client deletion, and data archiving strategies. Strong knowledge of SAP interface technologies including ALE, IDoc, RFC, and third-party middleware integration. Excellent English communication and stakeholder management skills, with the ability to explain complex technical concepts to non-technical business leaders. Strong analytical and problem-solving ...

T24/Transact Migration Engineer (TAFC - TAFJ)

Hiring Organisation
VIQU IT
Location
London, Bishopsgate, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £500/day Inside IR35
technical understanding of: o COB processing o Local developments (L3 code) o Existing T24 data structures and file architecture • Experience troubleshooting across infrastructure and middleware layers such as: o JBoss/application servers o IBM MQ/integration layers o TAFJ runtime & Java components • Ability to analyse and support ...

Workday Integration Lead

Hiring Organisation
Lawrence Harvey
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £700/day
Identity and access management integrations Finance integrations Time and absence integrations Benefits provider integrations Third-party vendor integrations File-based, API, web service, and middleware integration approaches Required Experience Proven experience leading the integration workstream on one or more Workday implementations. Strong understanding of Workday integration architecture and design principles. ...

Senior Salesforce Architect

Hiring Organisation
IO Associates
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
release cycles. Desirable Skills Salesforce certifications such as Application Architect, System Architect, Admin, App Builder, or Platform Developer. Integration architecture experience (APIs, Middleware, CRM integrations). Agile delivery experience and familiarity with common project tools. This is a fantastic opportunity to contribute to a focused Salesforce architecture engagement, working alongside ...

Application Designer

Hiring Organisation
Halian Technology Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £450 to £500 per day
design, code and testing artefacts Ensuring quality, completeness and accuracy across deliverables Technical Environment Core Technologies Platforms: Linux (Red Hat Enterprise Linux) Integration & Middleware: IBM App Connect Enterprise (ACE) v12/v13 IBM WebSphere MQ v9 Databases: Oracle 19 (SQL, PL/SQL, data modelling) Messaging & Data Formats ...

IT Deployment Engineer

Hiring Organisation
Ganymede Solutions
Location
Bromley, Bromley Town, Greater London, United Kingdom
Employment Type
Contract
testing. You will be comfortable working with operational stakeholders and third-party suppliers, bringing a personable and proactive approach to problem solving. Experience with middleware platforms would be highly advantageous, as would exposure to cloud technologies such as AWS. Candidates with experience in retail, EPOS or payment systems environments ...

Salesforce Vlocity CPQ Architect

Hiring Organisation
IBU CONSULTING LTD
Location
London, United Kingdom
Employment Type
Contract
components including OmniScripts, DataRaptors, Integration Procedures, and FlexCards. Ensure seamless integrations between Salesforce Industries and external OSS/BSS systems, billing platforms, CRM, ERP, middleware, and order management systems. Define integration patterns using REST/SOAP APIs, Platform Events, middleware platforms, and microservices architecture. Lead architecture governance, code reviews, solution … Strong Salesforce platform knowledge including Apex, Lightning Web Components (LWC), Flows, and APIs. Experience integrating Salesforce with external systems using REST, SOAP, ETL, and middleware technologies. Knowledge of Salesforce security architecture, governor limits, and platform best practices. Experience with DevOps tools such as Git, Copado, Gearset, Jenkins, or Azure DevOps. ...

Technology & Solution Lead – Workforce Management

Hiring Organisation
Intec Select Ltd
Location
London, Billingsgate, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £750/day
knowledge between Time, HR, Scheduling, and Payroll systems. Excellent documentation and stakeholder communication skills (technical and non-technical). Experience with common platforms and middleware (e.g., UKG/ATOSS, SAP, Workday, Boomi, MuleSoft, CPI). Details: £750 P/D (Inside IR 35) Hybrid role (2 days P/ ...

Integration Specialist – Workforce Management

Hiring Organisation
Intec Select Ltd
Location
London, Billingsgate, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £750/day
Time results to payroll engines (hours, premiums, exceptions, retro adjustments) Scheduling data exchange (planned shifts, changes, absences interplay) Implement secure integration patterns (API, file, middleware), including encryption, error handling, retries, and monitoring Develop reconciliation and control reports to ensure end-to-end completeness and accuracy Support SIT/ ...

Financial Delivery Manager

Hiring Organisation
Pontoon
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£700/day Inside IR35
Experience delivering in complex, multi-team environments (financial services preferred) Strong stakeholder management able to challenge and drive outcomes Understanding of data resilience across middleware, cloud, and core systems Experience identifying and managing risks and controls Comfortable working with data tracking, reporting, and structured analysis Exposure to operational resilience regulation ...

Integration Architect

Hiring Organisation
Halian Technology Limited
Location
City, London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 600 Daily
Application Design Analyst (ACE/Middleware) Contract Location: UK (GBS UK) Contract Type: Contractor - Inside IR35 Division: Group Business Solutions (GBS) About the Role IT sits at the heart of the organisations business, enabling continuous innovation while delivering cost-effective, high-quality services to clients globally click apply for full ...

Mainframe Middleware Infrastructure Engineer (CICS Liberty)

Hiring Organisation
Gazelle Global Consulting Ltd
Location
London, United Kingdom
Employment Type
Contract
Mainframe Middleware Infrastructure Engineer (CICS Liberty) 6-12 Month Contract | London or Edinburgh | Hybrid (2-3 Days Onsite) | Excellent Day Rate We're looking for an experienced Mainframe Middleware Infrastructure Engineer with strong expertise across CICS, z/OS and IBM WebSphere Liberty to support a major enterprise transformation programme. … data Capacity planning, resilience, HA/DR and operational support Experience with CI/CD pipelines, automated deployments and release processes Monitoring, observability and middleware operational management This is an excellent opportunity to work on critical banking and financial services infrastructure whilst helping modernise core mainframe platforms with contemporary Java ...

Boomi Developer

Hiring Organisation
BOSS Professional Services LTD
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£575 - £675 per day
optimize data models to seamlessly extract and inject data to/from Infor LN. Convert transactional tables into modern XML/JSON payloads. API & Middleware Integration: Build and maintain REST/SOAP APIs and configure technology connectors (Database, SFTP, Web Services). Work closely with Infor ION (Intelligent Open Network … middleware frameworks where applicable. Advanced Data Mapping: Write custom scripting (JavaScript or Groovy) within Boomi to handle complex data transformations, split-routings, and multi-level parent/child loops (e.g., Purchase Order Headers to multi-line items). Error Handling & Monitoring: Establish rigorous enterprise-level error-handling frameworks, retry mechanisms ...

Integration Architect

Hiring Organisation
Halian Technology Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £600 per day
Application Design Analyst (ACE/Middleware) Contract Location: UK (GBS UK) Contract Type: Contractor - Inside IR35 Division: Group Business Solutions (GBS) About the Role IT sits at the heart of the organisations business, enabling continuous innovation while delivering cost-effective, high-quality services to clients globally. The organisations core platforms … strong focus on design, development, and integration of messaging solutions . Key Responsibilities You will play a critical role in delivering robust, scalable middleware solutions. Responsibilities include: Design & Documentation Produce High-Level Application Design (HLAD) documents Create Detailed Technical Design Documents (TDD) aligned with functional requirements Develop program specifications ...

Solace Middleware Engineer

Hiring Organisation
Teksystems
Location
London, United Kingdom
Employment Type
Contract
Title: Solace Middleware Engineer Job Description We are seeking a Senior Solace Middleware Engineer for a dynamic role within a front-office trading technology team, focusing on FX and Fixed Income environments. This position involves hands-on engineering responsibilities, owning, and evolving a low-latency messaging platform crucial for real … fundamentals. Proven ability to diagnose and resolve performance and latency issues. Additional Skills & Qualifications experience with market data systems or trading workflows. Exposure to middleware technologies like Tibco, MQ, or similar. Knowledge of monitoring tools such as Geneos or Corvil. Familiarity with FIX protocol or trading connectivity. Scripting skills ...

Solace Middleware Engineer - London - Inside IR35

Hiring Organisation
Akkodis
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £500 per day
Solace Middleware Engineer 2/3 days onsite in London £450-500 inside IR35 6 months We're looking for a Solace Middleware Engineer to support a low-latency electronic trading environment within a leading investment banking setting. This is a hands-on role focused on mission-critical messaging infrastructure … application onboarding , defining messaging standards and connectivity Automate operational tasks using Python/scripting Key Requirements Strong experience with Solace (essential) Proven background in middleware messaging (e.g. Solace, TIBCO, MQ) Experience in investment banking/electronic trading environments Knowledge of FX and/or Fixed Income trading systems Strong Linux ...

Salesforce Developer

Hiring Organisation
167 Solutions Ltd
Location
North West London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £400 to £500 per day
Job Title: Salesforce Developer (Contract Outside IR35) Company: 167 Solutions Location: London (Hybrid) Day Rate: £400 £500 per day Contract Length: 36 months IR35 Status: Outside IR35 Start Date: ASAP About the Role 167 Solutions ...

Mainframe Middleware Infrastructure Engineer (CICS Liberty)

Hiring Organisation
Gazelle Global Consulting Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Mainframe Middleware Infrastructure Engineer (CICS Liberty) 6-12 Month Contract London or Edinburgh Hybrid (2-3 Days Onsite) Excellent Day Rate We're looking for an experienced Mainframe Middleware Infrastructure Engineer with strong expertise across CICS, z/OS and IBM WebSphere Liberty to support a major enterprise transformation programme ...