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34 back end developer jobs found in London, greater london

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London back end developer Greater London
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Contract Spy
Jan 05, 2026
Duration not stated
Senior Power BI Consultant/Developer - Banking Operations at Emagine Consulting, London, £600-£650 per day
£600 - £650 per day
Contract Spy London, UK
We are currently looking for a Senior Power BI consultant/developer to build, lead, and own a new reporting capability within the Operations/IT function. This is a high-autonomy, hands-on role that combines BI development, operational analysis, system support, and technical problem-solving Senior Power BI Consultant/Developer- Banking Operations (Reconciliations / Controls) £600- £650pd London - (Hybrid) x2 Days on-site emagine is a high-end professional services consultancy and solutions firm specializing in providing business and technology services to the financial services sector. We power progress, solve challenges, and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication to delivering the optimal service for our clients. Our commitment is not just towards...
Contract Spy
Dec 30, 2025
Duration not stated
Senior Power BI Consultant/Developer - Banking Operations at Emagine Consulting, London, £600-£650 per day
£600 - £650 per day
Contract Spy London, UK
We are currently looking for a Senior Power BI consultant/developer to build, lead, and own a new reporting capability within the Operations/IT function. This is a high-autonomy, hands-on role that combines BI development, operational analysis, system support, and technical problem-solving Senior Power BI Consultant/Developer- Banking Operations (Reconciliations / Controls) £600- £650pd London - (Hybrid) x2 Days on-site emagine is a high-end professional services consultancy and solutions firm specializing in providing business and technology services to the financial services sector. We power progress, solve challenges, and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication to delivering the optimal service for our clients. Our commitment is not just towards...
Contract Spy
Dec 24, 2025
Duration not stated
Senior Power BI Consultant/Developer - Banking Operations at Emagine Consulting, London, £600-£650 per day
£600 - £650 per day
Contract Spy London, UK
We are currently looking for a Senior Power BI consultant/developer to build, lead, and own a new reporting capability within the Operations/IT function. This is a high-autonomy, hands-on role that combines BI development, operational analysis, system support, and technical problem-solving Senior Power BI Consultant/Developer- Banking Operations (Reconciliations / Controls) £600- £650pd London - (Hybrid) x2 Days on-site emagine is a high-end professional services consultancy and solutions firm specializing in providing business and technology services to the financial services sector. We power progress, solve challenges, and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication to delivering the optimal service for our clients. Our commitment is not just towards...
Contract Spy
Dec 18, 2025
Duration not stated
Senior Power BI Consultant/Developer - Banking Operations at Emagine Consulting, London, £600-£650 per day
£600 - £650 per day
Contract Spy London, UK
We are currently looking for a Senior Power BI consultant/developer to build, lead, and own a new reporting capability within the Operations/IT function. This is a high-autonomy, hands-on role that combines BI development, operational analysis, system support, and technical problem-solving Senior Power BI Consultant/Developer- Banking Operations (Reconciliations / Controls) £600- £650pd London - (Hybrid) x2 Days on-site emagine is a high-end professional services consultancy and solutions firm specializing in providing business and technology services to the financial services sector. We power progress, solve challenges, and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication to delivering the optimal service for our clients. Our commitment is not just towards...
Contract Spy
Dec 12, 2025
Duration not stated
Senior Power BI Consultant/Developer at Emagine Consulting, London, £600-£650 per day
£600 - £650 per day
Contract Spy London, UK
We are currently looking for a Senior Power BI consultant/developer to build, lead, and own a new reporting capability within the Operations/IT function. This is a high-autonomy, hands-on role that combines BI development, operational analysis, system support, and technical problem-solving Senior Power BI Consultant/Developer- Banking Operations (Reconciliations / Controls) £600- £650pd London - (Hybrid) x2 Days on-site emagine is a high-end professional services consultancy and solutions firm specializing in providing business and technology services to the financial services sector. We power progress, solve challenges, and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication to delivering the optimal service for our clients. Our commitment is not just towards...
Contract Spy
Dec 12, 2025
6 Months or more
Java Developer at Handelsbanken, London, 6 Months, £Day Rate
Contract Spy London, England, United Kingdom
Job Introduction Main Responsibilities As a Java Developer (6M day rate contract) you will be joining the IT team responsible for the delivery, support and maintenance of Handelsbanken PLC’s Core Banking systems encompassing Platforming, Risk, Payments, Lending and Customer Data. As a Java Developer you will be providing expertise in the full software development life cycle. Key Responsibilities Use your initiative to work with Senior Java Development, UI/UX Development and Agile Transformation to help shape, architect and deliver greenfield/brownfield/integration applications employing best design and development practice Positively effective at systems analysis, solving technical problems and development excellence given the constraints of the Bank’s environment Follow cross-functional development best practice, including but not restricted to, Functional and Non-Functional Analysis, Application Architecture, Design, Coding and Unit Testing,...
Contract Spy
Jan 07, 2026
6 Months or more
Senior Java/React Full Stack Developer at Appvia, London/Remote, 6 Months, £550-£600 per day (Outside IR35)
Contract Spy Hybrid (London, UK)
Senior Java/React Full Stack Developer Location: London or Newcastle, UK (Hybrid - ~1 day per week in office / onsite) Contract: Contract - 6 months with view to extend Day Rate: £550 - £600 per day - Outside IR35 About Appvia Appvia is a specialist cloud, platform, and solutions engineering consultancy. We help organisations modernise software systems, improve developer productivity, and adopt cloud-native practices that enable long-term, sustainable delivery. Our software engineering work focuses on modern application development, domain-driven design, and improving delivery outcomes through better architecture, testing, and developer experience. About the Role We are looking for a Senior Java/React Full Stack Developer to join Appvia on a contract basis, working as a hands-on engineering consultant within our Solutions Engineering team. This role is focused on modernising large, complex software systems, reducing technical debt, and improving...
Contract Spy
Jan 07, 2026
Duration not stated
Salesforce Developer at Handelsbanken, London, £Day Rate
Contract Spy London, England, United Kingdom
Job Introduction Main Responsibilities As the Salesforce Developer this role will work closely with the Salesforce Technical Lead and Lead architect to help with the development, Integration and configuration of Salesforce platform and performing the day to day operations to maintain the platform by partnering with people across the business and broader IT team to deliver customer value through the extension of CRM services. Work on Salesforce FSC projects to integrate with 3 rd party SAAS systems and internal on Prem systems leveraging APIs, different integration patterns and tools. Leverage the existing DevOps tools and methodologies (Azure DevOps) for deployments of user stories/tickets/bugs. Analyse requirements and translate them into technical solutions especially around Integrations. Design, Build, and test applications ensuring high-quality delivery. Also, integral part of the Run/Ops team of Salesforce to help with BAU requests and maintain the...
Contract Spy
Jan 06, 2026
Duration not stated
Data Modeller at Handelsbanken, London, £Day Rate
Contract Spy London, England, United Kingdom
Job Introduction Main Responsibilities Operates in line with the Bank's Risk Management framework (including sub-frameworks) and relevant risk and compliance policies and procedures, ensuring appropriate and timely escalation of any concerns to their line manager. Designs logical data models in the Finance domain, aligned with the bank’s conceptual data model, to capture the organization's data requirements to support reporting, analytics, and operational use cases Collaborates with data stewards and subject matter experts to develop the logical data models aligned with business requirements when conceptual data models are not available and to confirm internal reference data in the Finance domain Inputs into the development of the bank’s conceptual data model and how it is applied. Works closely with Data and Solution Architects on projects to support the completion of High level solution architecture and Low level designs Collaborates with...
Contract Spy
Jan 06, 2026
up to 6 Months
ERP Procurement and Change Management Specialist at Bank of England, London, 5 Months, £Contract Rate
Contract Spy London, UK
  The Bank of England is the UK 's central bank. Our mission is to deliver monetary and financial stability for the British people.   The Bank of England is a diverse organisation. Each of its 4,000 people are committed to public service and dedicated to promoting the good of the people of the United Kingdom by maintaining monetary and financial stability.   Join us at the Bank as we transform our procurement systems and processes. We are seeking a skilled and experienced Oracle ERP Procurement Configuration and Implementation Specialist to play a pivotal role in deploying and optimising our new ERP solution.   As part of the Commercial Operations team, you will help shape the future of procurement by configuring, implementing, and supporting Oracle ERP procurement modules. This includes Sourcing, Purchasing, Contracts, Supplier Management, eCatalogues, and Reporting.   You'll work closely with stakeholders across Finance,...
Contract Spy
Jan 06, 2026
6 Months or more
D365 Product Owner at Investec, London, 6 Months, £Contract Rate
Contract Spy London, UK
Investec is a distinctive Specialist Bank serving clients principally in the UK and South Africa. Our culture gives us our edge: we work hard to find colleagues who'll think out of the ordinary and we put them in environments where they'll flourish. We combine a flat structure with a focus on internal mobility. If you can bring an entrepreneurial spirit and a desire to learn and collaborate to your work, this could be the boost your career deserves.   Contract D365 Product Owner 6 month sabbatical cover Inside IR35   Investec are looking for an experienced senior Dynamics 365 Product Owner to join the D365 Digital & Technology team on a 6 month contract basis, supporting Investec Bank as we undertake a once-in-a-generation transformation to move to a fully cloud native & SaaS technology stack, entirely built on Azure. As part of this transformation, we are heavily leveraging D365 as the backbone of our business processes....
Contract Spy
Jan 05, 2026
Duration not stated
Endur Developer at Deloitte, City Of London, £Contract Rate
Contract Spy City Of London, England, United Kingdom
Role: Endur Developer Rate: Competitive, inside IR35 Location: London, Hybrid (work from the office 2 to 3 times per week) Contract: Until December 2026 (could be extended) Target Start Date: ASAP This is an excellent opportunity for an experienced professional to play a key role in delivering high-impact projects within the Gas and Power markets. As an Endur Developer, you will be working closely with business stakeholders and technical teams to design, develop, and implement solutions on the OpenLink Endur platform. You will contribute to critical projects, ensuring systems meet business requirements while maintaining high performance and reliability. Key Responsibilities Design, code, test, and maintain system components, ensuring robust integration with upstream and downstream systems. Develop and enhance Endur solutions using OpenLink development tools (including JVS, AVS and Open Components). Collaborate with business analysts, architects, and...
Contract Spy
Jan 05, 2026
Duration not stated
Head of Digital Product for Payments at Handelsbanken, London, £Day Rate
Contract Spy London, England, United Kingdom
Job Introduction The Head of Digital Product (Payments) role resides within the Handelsbanken Digital department and is responsible for overseeing the successful development and release of the Bank’s digital products relating to the payments process across both the private and corporate banking segments. The postholder will work closely with Financial Products leads to support the development of the Payments Strategy and then develop the product vision that underpins it. Playing an important role within the Bank’s IT Modernisation programme, the role holder will partner with Delivery and Technology leaders to lead dynamic multi-disciplinary teams responsible for the successful deployment of a new Payments Platform in collaboration with the Bank’s chosen vendor. They are responsible for engaging collaboratively with the Business functions (including Financial Product, the Branch network, Risk, etc.) in order to ensure all interests are represented in the...
Contract Spy
Jan 02, 2026
up to 6 Months
Senior Product Designer at Red Badger, London Area, 10 Weeks (19 Jan Start), £Competitive Day Rate (Outside IR35)
Contract Spy London Area, United Kingdom
10 week contract Start date Monday 19th January Joining a cross functional team of Red Badger Consultants The project if for a major UK bank Building a customer facing portal from scratch Role will be about rapid prototyping using Figma and Tailwind Immediate interviews Ltd company outside IR35 or Umbrella contract. £Competitive day rate 2 days / week in person working         About Red Badger       Founded in 2010 by Stuart, Cain and David, we help large organisations improve their speed to market whilst focusing on delivering value to their users and customers. We work with our clients to understand their problems and validate ideas in order to deliver improved process efficiencies, strategic enhancements and new digital products and services (or make significant improvements to existing ones).     The best bit about Red Badger is,...
Contract Spy
Dec 31, 2025
up to 6 Months
Senior Systems Integration Test Analyst at Ten10, London/Remote, 3 Months initial, £375 per day
£375 per day
Contract Spy Hybrid (London, UK)
Senior Systems Integration Test Analyst Rate: £375pd (Inside IR35) Duration: 3 months initially Location: London (Hybrid, 3 days per week onsite)   Are you a highly experienced Senior Systems Integration Test Analyst with a proven track record in end-to-end technical systems validation? At Ten10, we’re a leading consultancy in Quality Engineering, Software Testing, and DevOps, and we’re looking for someone like you to join us on an interim basis for a challenging and impactful project.   The Role: Specialist in Back-End Systems Integration You will play a crucial role in ensuring that our client’s integrated back-end systems meet the highest standards of quality. This role is highly focused on the technical depth of systems integration and requires a proactive, inquisitive approach to testing in a dynamic environment.   We need a candidate who is naturally inquisitive, is comfortable asking...
Contract Spy
Dec 30, 2025
6 Months or more
Intra-Group Service Management Lead at Handelsbanken, London, 12 Months, £Contract Rate
Contract Spy London, England, United Kingdom
Job Introduction Handelsbanken are looking to hire an Intra-Group Service Management Lead. This role will be responsible for all improvement activity associated with the Intra-Group Services Agreement (IGSA) Enhancement Programme, ensuring alignment with the Bank’s Third Party and Outsourcing Policy and associated regulation. It will also oversee the day-to-day management of the Bank’s Intra-Group Services Agreement, in line with the Bank’s Third Party and Outsourcing Policy and associated regulation. This role will instil a strong service management ethos culture aligned to the improvement programme. In all aspects of the role, there will be a strong reliance on sound improvement practices to ensure the Bank makes steady progress on its technology regulatory agenda whilst maintaining the stability and control of the existing services. Main Responsibilities Lead the IGSA Enhancement Programme, ensuring it delivers successfully within the agreed...
Contract Spy
Dec 29, 2025
6 Months or more
Application Security Consultant at Handelsbanken, London, 6 Months, £Contract Rate
Contract Spy London, England, United Kingdom
Job Introduction We are seeking a versatile and proactive ‘Application Security Consultant’’ to join Handelsbanken UK which is currently undergoing a major technology transformation programme. We are modernising our tech stack whilst preserving trust and security. You will act as the security lead in an application development delivery team working across a complex hybrid tech stack including Java/React, J2EE microservices, RPG/JSP hosted on z/OS and an API driven architecture. A key focus of this role will involve uplifting our application development security processes to enable the team to deliver quickly and securely. You will operate our existing secure change process whilst helping revise and uplift the application development security assurance operating model. Your work will cover metrics, templates, controls, automation, secure code practices and workflows. The Bank operates an model where information security consultants are embedded into...
Contract Spy
Dec 29, 2025
6 Months or more
D365 Product Owner at Investec, London, 6 Months, £Contract Rate
Contract Spy London, UK
Investec is a distinctive Specialist Bank serving clients principally in the UK and South Africa. Our culture gives us our edge: we work hard to find colleagues who'll think out of the ordinary and we put them in environments where they'll flourish. We combine a flat structure with a focus on internal mobility. If you can bring an entrepreneurial spirit and a desire to learn and collaborate to your work, this could be the boost your career deserves.   Contract D365 Product Owner 6 month sabbatical cover Inside IR35   Investec are looking for an experienced senior Dynamics 365 Product Owner to join the D365 Digital & Technology team on a 6 month contract basis, supporting Investec Bank as we undertake a once-in-a-generation transformation to move to a fully cloud native & SaaS technology stack, entirely built on Azure. As part of this transformation, we are heavily leveraging D365 as the backbone of our business processes....
Contract Spy
Dec 24, 2025
up to 6 Months
Senior Systems Integration Test Analyst at Ten10, London/Remote, 3 Months initial, £375 per day
£375 per day
Contract Spy Remote (London Area, United Kingdom)
Senior Systems Integration Test Analyst Rate: £375pd (Inside IR35) Duration: 3 months initially Location: London (Hybrid, 3 days per week onsite)     Are you a highly experienced Senior Systems Integration Test Analyst with a proven track record in end-to-end technical systems validation? At Ten10, we’re a leading consultancy in Quality Engineering, Software Testing, and DevOps, and we’re looking for someone like you to join us on an interim basis for a challenging and impactful project.     The Role: Specialist in Back-End Systems Integration You will play a crucial role in ensuring that our client’s integrated back-end systems meet the highest standards of quality. This role is highly focused on the technical depth of systems integration and requires a proactive, inquisitive approach to testing in a dynamic environment.     We need a candidate who is naturally inquisitive,...
Contract Spy
Dec 22, 2025
up to 6 Months
Senior Systems Integration Test Analyst at Ten10, London/Remote, 3 Months initial, £375 per day
£375 per day
Contract Spy Hybrid (London, UK)
Senior Systems Integration Test Analyst Rate: £375pd (Inside IR35) Duration: 3 months initially Location: London (Hybrid, 3 days per week onsite)   Are you a highly experienced Senior Systems Integration Test Analyst with a proven track record in end-to-end technical systems validation? At Ten10, we’re a leading consultancy in Quality Engineering, Software Testing, and DevOps, and we’re looking for someone like you to join us on an interim basis for a challenging and impactful project.   The Role: Specialist in Back-End Systems Integration You will play a crucial role in ensuring that our client’s integrated back-end systems meet the highest standards of quality. This role is highly focused on the technical depth of systems integration and requires a proactive, inquisitive approach to testing in a dynamic environment.   We need a candidate who is naturally inquisitive, is comfortable asking...
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