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Strong knowledge of the API/integration lifecycle, including design, deployment, and enhancement. * Expertise in RESTful & SOAP API design, APIM policy, and transformations. * Skilled in API/Integration security protocols & best practices. * Practical experience with Postman, API monitoring, and documentation tools. * Knowledge of Open API Specification, WSDL, SOAP, XSLT. * Application Insight proficiency in .NET and .NET Core (Web, API) and working knowledge of VS Code with Azure.
Strong knowledge of the API/integration lifecycle, including design, deployment, and enhancement. * Expertise in RESTful & SOAP API design, APIM policy, and transformations. * Skilled in API/Integration security protocols & best practices. * Practical experience with Postman, API monitoring, and documentation tools. * Knowledge of Open API Specification, WSDL, SOAP, XSLT. * Application Insight proficiency in .NET and .NET Core (Web, API) and working knowledge of VS Code with Azure.
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Strong experience with RESTful API development in microservice environments
Strong experience with RESTful API development in microservice environments
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Expert-level knowledge of IAM, network security, encryption, API and application security, container security, and SIEM strategies.
Expert-level knowledge of IAM, network security, encryption, API and application security, container security, and SIEM strategies.
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Hybrid Python Developer – 9-12 Month Contract (Outside IR35)
Hybrid Python Developer – 9-12 Month Contract (Outside IR35)
Halian Technology Limited
RG1, Reading
From £375 to £450 per day
HybridPython Developer 9-12 Month Contract (Outside IR35) * Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: £375-£450 per day (Outside IR35) Exciting Projects: Work on innovative digital solutions in a start-up environment. Flexible Working: Enjoy a hybrid role with one day a week in London. Collaborative Culture: Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Insurance company looking for experienced Python Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up backed by a major insurer and specialising in pay-as-you-go car insurance growing quicklywith over a million customers.
HybridPython Developer 9-12 Month Contract (Outside IR35) * Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: £375-£450 per day (Outside IR35) Exciting Projects: Work on innovative digital solutions in a start-up environment. Flexible Working: Enjoy a hybrid role with one day a week in London. Collaborative Culture: Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Insurance company looking for experienced Python Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up backed by a major insurer and specialising in pay-as-you-go car insurance growing quicklywith over a million customers.
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Application Security (secure coding, API security, SAST/DAST, WAF integration).
Application Security (secure coding, API security, SAST/DAST, WAF integration).
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Experience developing API and UI
Experience developing API and UI
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We are seeking a skilled SAP Data Migration Specialist to join our team. This contract role sits inside IR35. Duration 6 months - Summary - The successful candidate will have experience in S4 Hana Greenfield data migration and multi LOBs such as Finance, Procurement, Manufacturing and Projects. This role requires meticulous attention to detail, a strong ability to work independently while supporting the team, and effective communications skills for collaboration with Business Users. Key Tasks * Develop and optimize SQL scripts for data extraction, transformation, loading (ETL). * Write robust, efficient, and scalable SQL code for data manipulation, reporting, and analytics across various platforms * Proficiency in writing complex SQL queries, stored procedures, and database triggers * Experienced S/4HANA Public cloud Data Migration consultant covering P2P, OTC, Financ
We are seeking a skilled SAP Data Migration Specialist to join our team. This contract role sits inside IR35. Duration 6 months - Summary - The successful candidate will have experience in S4 Hana Greenfield data migration and multi LOBs such as Finance, Procurement, Manufacturing and Projects. This role requires meticulous attention to detail, a strong ability to work independently while supporting the team, and effective communications skills for collaboration with Business Users. Key Tasks * Develop and optimize SQL scripts for data extraction, transformation, loading (ETL). * Write robust, efficient, and scalable SQL code for data manipulation, reporting, and analytics across various platforms * Proficiency in writing complex SQL queries, stored procedures, and database triggers * Experienced S/4HANA Public cloud Data Migration consultant covering P2P, OTC, Financ
Company Description - Founded by experienced entrepreneurs and engineers in 2016, Pismo is a technology company that provides a comprehensive processing platform for banking, card issuing and financial market infrastructure and helps customers innovate and build the next generation of banking and payment solutions. Pismo joined Visa in 2024. Leveraging Visas solutions, our core platform, and an expanding suite of capabilities, Pismo addresses the technological challenges that large banks, marketplaces, and fintech companies face in migrating from legacy systems to more advanced technology in the market. Pismos cloud-based platform empowers firms to build and launch financial products rapidly, scaling as they grow to have a broader audience while keeping high security and availability standards. Pismos 500+ employees are located in more than 10 countries around the wor
Company Description - Founded by experienced entrepreneurs and engineers in 2016, Pismo is a technology company that provides a comprehensive processing platform for banking, card issuing and financial market infrastructure and helps customers innovate and build the next generation of banking and payment solutions. Pismo joined Visa in 2024. Leveraging Visas solutions, our core platform, and an expanding suite of capabilities, Pismo addresses the technological challenges that large banks, marketplaces, and fintech companies face in migrating from legacy systems to more advanced technology in the market. Pismos cloud-based platform empowers firms to build and launch financial products rapidly, scaling as they grow to have a broader audience while keeping high security and availability standards. Pismos 500+ employees are located in more than 10 countries around the wor
62 exact matches jobs are outside your preferred location
Up to £515 per day (Inside IR35) Remote / must be UK based - 3 months initially (open to extension) My client is an instantly recognisable consultancy who seek a - to lead the design and implementation of robust, secure, and scalable integrations for an end client. * Hands-on experience as a Senior Integration Developer, with D365 Finance integrations. * Deep knowledge of REST APIs, OData, DMF packages, and data mapping (XSLT, XML, JSON, CSV). * Proficiency in tools like Postman, Azure Logic Apps, PowerShell, and C#. * Experience with ETL processes, error handling, idempotency, and throttling. * Strong understanding of secure data handling, encryption, and compliance standards. * Familiarity with monitoring tools like Application Insights and Log Analytics. * Industry experience within financial services * Experience with Microsoft Power Platform (Power Automate, Powe
Up to £515 per day (Inside IR35) Remote / must be UK based - 3 months initially (open to extension) My client is an instantly recognisable consultancy who seek a - to lead the design and implementation of robust, secure, and scalable integrations for an end client. * Hands-on experience as a Senior Integration Developer, with D365 Finance integrations. * Deep knowledge of REST APIs, OData, DMF packages, and data mapping (XSLT, XML, JSON, CSV). * Proficiency in tools like Postman, Azure Logic Apps, PowerShell, and C#. * Experience with ETL processes, error handling, idempotency, and throttling. * Strong understanding of secure data handling, encryption, and compliance standards. * Familiarity with monitoring tools like Application Insights and Log Analytics. * Industry experience within financial services * Experience with Microsoft Power Platform (Power Automate, Powe
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Previous work in API integration
Previous work in API integration
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We're looking for a Senior AWS Platform Engineer to play a hands-on role in a major API infrastructure migration project. * Kong API Gateway (hybrid model) * Strong understanding of API gateways (Kong)
We're looking for a Senior AWS Platform Engineer to play a hands-on role in a major API infrastructure migration project. * Kong API Gateway (hybrid model) * Strong understanding of API gateways (Kong)
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Software Developer - Active SC, Python, AWS
Software Developer - Active SC, Python, AWS
Hays
London
£400.0 - £425.0 per day + up to £425 per day (InsideIR35)
Proven experience as a software developer with data integration experience (API)
Proven experience as a software developer with data integration experience (API)
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Python Backend Developer - AWS
Python Backend Developer - AWS
Infoplus Technologies UK Ltd
London
From £300 to £350 per day Max GBP 350/day Inside IR35
GraphQL, API authentication, performance management, and internationalization
GraphQL, API authentication, performance management, and internationalization
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Proficiency in JavaScript, Glide API, and ServiceNow development tools.
Proficiency in JavaScript, Glide API, and ServiceNow development tools.
D365 Finance Senior Integration Developer (remote)
D365 Finance Senior Integration Developer (remote)
Hays
London
£500.0 - £550.0 per day + c£510 per day (inside IR35)
We are currently seeking a D365 Senior Integration Developer (finance) to design and implement integrations using D365 API's (e.g. Data Management Package, REST API, OData) You will develop automation processes for data transformation, upload, import and error handling in batch or near real-time modes. Proficiency in tools like Postman, Azure Logic Apps, and scripting (e.g., C#, PowerShell) for API orchestration, along with ETL processes.
We are currently seeking a D365 Senior Integration Developer (finance) to design and implement integrations using D365 API's (e.g. Data Management Package, REST API, OData) You will develop automation processes for data transformation, upload, import and error handling in batch or near real-time modes. Proficiency in tools like Postman, Azure Logic Apps, and scripting (e.g., C#, PowerShell) for API orchestration, along with ETL processes.
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Lead integration of data from SAP (e.g., S/4HANA, BW/4HANA) and external platforms using cloud and API technologies.
Lead integration of data from SAP (e.g., S/4HANA, BW/4HANA) and external platforms using cloud and API technologies.
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Loan IQ Technical Consultant - inside IR35
Loan IQ Technical Consultant - inside IR35
LA International Computer Consultants Ltd
London
£800 - £850 per day
oKnowledge of event management frameworks and API integrations.
oKnowledge of event management frameworks and API integrations.
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My client is a high-profile consultancy who require an Endur Solution Architect, with experience in Endur and in Energy Trading and Risk Management (ETRM) systems, to work closely with an end customer. * Proven expertise as a Subject Matter Expert (SME) in Energy Trading and Risk Management (ETRM) systems, with deep specialization in Endur. * Ability to deliver strategic guidance and solutions for complex trading and risk management scenarios. * Strong capability to optimize Endur functionalities across front-office, middle-office, and back-office operations. * Demonstrated technical leadership in Endur-related projects, ensuring alignment with business goals and industry standards. * Solid understanding of system integration principles, including APIs, middleware, and data interfaces for seamless enterprise connectivity.
My client is a high-profile consultancy who require an Endur Solution Architect, with experience in Endur and in Energy Trading and Risk Management (ETRM) systems, to work closely with an end customer. * Proven expertise as a Subject Matter Expert (SME) in Energy Trading and Risk Management (ETRM) systems, with deep specialization in Endur. * Ability to deliver strategic guidance and solutions for complex trading and risk management scenarios. * Strong capability to optimize Endur functionalities across front-office, middle-office, and back-office operations. * Demonstrated technical leadership in Endur-related projects, ensuring alignment with business goals and industry standards. * Solid understanding of system integration principles, including APIs, middleware, and data interfaces for seamless enterprise connectivity.
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API Integration Experience:Proven track record of consuming and building APIs for data exchange * Strong understanding of API development and integration (REST, GraphQL)
API Integration Experience:Proven track record of consuming and building APIs for data exchange * Strong understanding of API development and integration (REST, GraphQL)
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Rate - £500 per day Inside IR35 - Duration - 1 month initial - Location - Remote with occasional visits into London - We are looking for an experienced Siebel Developer to join our client's technology team and play a pivotal role in the design, development and migration of Siebel CRM solutions. You will be responsible for enhancing existing systems, delivering robust integrations with external applications and supporting large-scale migration projects as part of digital transformation initiatives. * Design, configure and develop Siebel CRM applications to meet evolving business requirements. * Support migration projects, including data migration, environment upgrades and platform transitions. * Deliver robust integrations between Siebel and third-party systems using Siebel EAI, web services, APIs and middleware.
Rate - £500 per day Inside IR35 - Duration - 1 month initial - Location - Remote with occasional visits into London - We are looking for an experienced Siebel Developer to join our client's technology team and play a pivotal role in the design, development and migration of Siebel CRM solutions. You will be responsible for enhancing existing systems, delivering robust integrations with external applications and supporting large-scale migration projects as part of digital transformation initiatives. * Design, configure and develop Siebel CRM applications to meet evolving business requirements. * Support migration projects, including data migration, environment upgrades and platform transitions. * Deliver robust integrations between Siebel and third-party systems using Siebel EAI, web services, APIs and middleware.
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Backend engineer
Backend engineer
LA International Computer Consultants Ltd
SN13, Corsham
£500 - £600 per day + price in
Architect and implement backend services that support secure, air-gapped AI - deployments, with a focus on NLP-based tooling * Develop pipelines for transcription ingestion and real-time analytical insight - generation * Support graph and RAG-based inference layers using data from structured and - unstructured sources * Build and expose APIs for frontend consumption, enabling natural-language - querying, dynamic visualisation, and reporting * Ensure system portability via containerisation * Collaborate closely with data scientists to integrate self-hosted LLMs and - analysis models into the backend infrastructure * Work with platform engineers to tune deployments for hardware-limited - environments - What You Bring * Strong experience building secure, scalable backend systems in Python and/or - Go * Deep understanding of containerised services, particularly in Kuberne
Architect and implement backend services that support secure, air-gapped AI - deployments, with a focus on NLP-based tooling * Develop pipelines for transcription ingestion and real-time analytical insight - generation * Support graph and RAG-based inference layers using data from structured and - unstructured sources * Build and expose APIs for frontend consumption, enabling natural-language - querying, dynamic visualisation, and reporting * Ensure system portability via containerisation * Collaborate closely with data scientists to integrate self-hosted LLMs and - analysis models into the backend infrastructure * Work with platform engineers to tune deployments for hardware-limited - environments - What You Bring * Strong experience building secure, scalable backend systems in Python and/or - Go * Deep understanding of containerised services, particularly in Kuberne
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Location: London OR Gloucester OR Warrington (Hybrid) Contract Duration: 6 months (starting ASAP) Security Clearance: UK SC Cleared (Mandatory) We are looking for an experienced Dynatrace Engineer to join an established IT Infrastructure team on a 6-month contract. This is a high-impact role focused on building scalable observability solutions using Dynatrace across multi-cloud environments (AWS & Azure), with a strong emphasis on automation and Infrastructure-as-Code using Terraform. You'll work cross-functionally with engineering, platform, and operations teams to enhance monitoring, improve performance visibility, and drive proactive incident management. This role can be based out of London, Gloucester, or Warrington, with some flexibility on hybrid working arrangements. Occasional on-call and out-of-hours work may be required, depending on project needs.
Location: London OR Gloucester OR Warrington (Hybrid) Contract Duration: 6 months (starting ASAP) Security Clearance: UK SC Cleared (Mandatory) We are looking for an experienced Dynatrace Engineer to join an established IT Infrastructure team on a 6-month contract. This is a high-impact role focused on building scalable observability solutions using Dynatrace across multi-cloud environments (AWS & Azure), with a strong emphasis on automation and Infrastructure-as-Code using Terraform. You'll work cross-functionally with engineering, platform, and operations teams to enhance monitoring, improve performance visibility, and drive proactive incident management. This role can be based out of London, Gloucester, or Warrington, with some flexibility on hybrid working arrangements. Occasional on-call and out-of-hours work may be required, depending on project needs.
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Location: London OR Gloucester OR Warrington (Hybrid) Contract Duration: 6 months (starting ASAP) Security Clearance: UK SC Cleared (Mandatory) We are looking for an experienced Dynatrace Engineer to join an established IT Infrastructure team on a 6-month contract. This is a high-impact role focused on building scalable observability solutions using Dynatrace across multi-cloud environments (AWS & Azure), with a strong emphasis on automation and Infrastructure-as-Code using Terraform. You'll work cross-functionally with engineering, platform, and operations teams to enhance monitoring, improve performance visibility, and drive proactive incident management. This role can be based out of London, Gloucester, or Warrington, with some flexibility on hybrid working arrangements. Occasional on-call and out-of-hours work may be required, depending on project needs.
Location: London OR Gloucester OR Warrington (Hybrid) Contract Duration: 6 months (starting ASAP) Security Clearance: UK SC Cleared (Mandatory) We are looking for an experienced Dynatrace Engineer to join an established IT Infrastructure team on a 6-month contract. This is a high-impact role focused on building scalable observability solutions using Dynatrace across multi-cloud environments (AWS & Azure), with a strong emphasis on automation and Infrastructure-as-Code using Terraform. You'll work cross-functionally with engineering, platform, and operations teams to enhance monitoring, improve performance visibility, and drive proactive incident management. This role can be based out of London, Gloucester, or Warrington, with some flexibility on hybrid working arrangements. Occasional on-call and out-of-hours work may be required, depending on project needs.
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We're looking for an experienced Engineering Manager to oversee the technical migration of a Product Information Management (PIM) system - namely STIBO STEP - from an on-premise setup to a SaaS solution. This role requires close collaboration with internal product and engineering teams, as well as with external partners. * 10+ years in software engineering and delivery, with at least 5 years in leadership, principal, or managerial roles. * Strong expertise in PIM/MDM platforms, with hands-on experience in STIBO STEP essential. * Proven track record migrating enterprise applications to SaaS, ideally within large-scale, complex environments. * Languages: Java 17+ (Java 21 preferred) * Frameworks: Micronaut (preferred), Spring Boot * Testing: JUnit, Mockito * Build Tools: Gradle * Data & Messaging: Kafka, MongoDB * APIs: GraphQL Federation, REST
We're looking for an experienced Engineering Manager to oversee the technical migration of a Product Information Management (PIM) system - namely STIBO STEP - from an on-premise setup to a SaaS solution. This role requires close collaboration with internal product and engineering teams, as well as with external partners. * 10+ years in software engineering and delivery, with at least 5 years in leadership, principal, or managerial roles. * Strong expertise in PIM/MDM platforms, with hands-on experience in STIBO STEP essential. * Proven track record migrating enterprise applications to SaaS, ideally within large-scale, complex environments. * Languages: Java 17+ (Java 21 preferred) * Frameworks: Micronaut (preferred), Spring Boot * Testing: JUnit, Mockito * Build Tools: Gradle * Data & Messaging: Kafka, MongoDB * APIs: GraphQL Federation, REST
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Our Client are looking for an SC cleared Frontend Engineer who thrives in environments where information is dense, the interface is critical, and the work matters. You excel at building responsive, intuitive UIs that surface complex machine learning insights to end users with clarity and usability. You care about the user journey as much as the underlying data, and you are motivated by delivering real-world impact in demanding operational settings. * Design and implement frontend interfaces that support live and retrospective exploration of data from complex systems * Build and iterate on React-based UIs for transcription review, dynamic querying, and data visualisation * Integrate user-facing features with backend APIs and machine learning services, including LLM outputs, NLP pipelines and structured data stores
Our Client are looking for an SC cleared Frontend Engineer who thrives in environments where information is dense, the interface is critical, and the work matters. You excel at building responsive, intuitive UIs that surface complex machine learning insights to end users with clarity and usability. You care about the user journey as much as the underlying data, and you are motivated by delivering real-world impact in demanding operational settings. * Design and implement frontend interfaces that support live and retrospective exploration of data from complex systems * Build and iterate on React-based UIs for transcription review, dynamic querying, and data visualisation * Integrate user-facing features with backend APIs and machine learning services, including LLM outputs, NLP pipelines and structured data stores
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Locations
- Basingstoke
- Southampton
- Reading
- Portsmouth
- Farnborough
- Surrey
- Fareham
- Swindon
- Eastleigh
- Andover
- London
- Sheffield
- Midlands
- South East
- Cornwall
- South West London
- North West
- Liverpool
- Swansea
- City of London
- Merseyside
- Hemel Hempstead
- Yorkshire
- Central London
- Scotland
- Cochrane Park
- Peterborough
- Northamptonshire
- Birmingham
- North East
- Rhiwderyn
- West Yorkshire
- Nottingham
- Leicestershire