20 of 20 Permanent Legacy Applications Jobs in London

technology consultancy seeking a Data Engineer with 5 years+ commercial experience to join a high-profile team supporting the decommissioning of legacy applications and the migration of data to modern platforms within a leading global investment bank. This is initially a 6 month contract with very good … further develop their career in data engineering and data management within a complex enterprise environment. Responsibilities Support the decommissioning of legacy applications through the extraction, analysis, validation and migration of data to target platforms. Investigate data-related issues impacting business processes, applications and downstream systems. Analyse ...

from business users and translate business needs into technical solutions; communicate technical constraints in business terms. Maintain and enhance existing and legacy applications when required. Required qualifications, capabilities, and skills Minimum 10 years of hands‐on Python development experience. Strong preference for candidates with a financial services … Capability to translate business needs into technical solutions and explain technical constraints in business terms. Willingness to understand and work on legacy applications when required. Preferred qualifications, capabilities, and skills Prior experience with financial risk stack platforms such as SecDB, Quartz, or Athena. Knowledge of rates products ...

from business users and translate business needs into technical solutions; communicate technical constraints in business terms. Maintain and enhance existing and legacy applications when required. Required qualifications, capabilities, and skills Minimum 10 years of hands-on Python development experience. Strong preference for candidates with a financial services … Capability to translate business needs into technical solutions and explain technical constraints in business terms. Willingness to understand and work on legacy applications when required. Preferred qualifications, capabilities, and skills Prior experience with financial risk stack platforms such as SecDB, Quartz, or Athena. Knowledge of rates products ...

solutions from scratch, you will apply agentic AI to transform how projects are executed end‐to‐end. What you’ll do Architect AI‐powered applications using autonomous and semi‐autonomous agentic frameworks. Apply AI agents across all delivery phases: analysis, design, build, test, deploy, and operations. Modernise legacy applications using agentic AI for discovery, transformation, and refactoring. Define end‐to‐end architectures integrating traditional software, LLMs, vector stores, and orchestration. Drive AI adoption within Avanade Regions, enabling AI‐driven solution roadmaps. Contribute to solution planning and design across multi‐disciplinary and multi‐cloud environments. Develop ...

within a fast-paced investment management environment. Over time, the role will also contribute to the migration, modernization, and rationalization of legacy applications onto strategic platforms. Key Responsibilities Provide support and maintenance for business-critical front-office applications. Investigate, troubleshoot, and resolve application, data, and performance issues. … Develop and enhance applications using C#/.NET technologies. Design, develop, and optimize complex SQL queries, stored procedures, and database solutions. Build and support front-end functionality using React. Work closely with business users to understand requirements and deliver effective technical solutions. Produce operational and management reporting to support ...

site 8 days per month which is mandatory. Responsibilities Working as part of an Agile development team to deliver the migration of the legacy application to a new event-based and service-oriented architecture solution, working in collaboration with the Solution Architect, Technical Lead, Application architects and other ...

deployment. 8 days on site per month. Responsibilities & Duties Work as part of an Agile development team to deliver the migration of the legacy application to a new event‐based and service‐oriented architecture solution, collaborating with the Solution Architect, Technical Lead, Application architects and other stakeholders. Lead ...

drive transformational outcomes across frontend modernization, platform migrations, and AI adoption. In this role, you will lead complex Next.js migrations, architect high-performance applications, and build production AI solutions—all within customer environments. You'll work hands‐on-keyboard alongside customer teams, whether you're migrating a legacy … customer codebases for performance bottlenecks, architectural anti‐patterns, and optimization opportunities—delivering actionable roadmaps that drive measurable improvements. Architect and implement high‐performance Next.js applications , leveraging App Router, Server Components, streaming, ISR, edge functions, and advanced rendering strategies to meet enterprise scale and performance requirements. Optimize Core Web Vitals ...

London Contract Type: Contract Inside IR35 Security Clearance: BPSS/SC Clearance required In this contract, you will lead the architecture assessment of legacy application estates and design exactly how they will land … operate on a newly established AWS core cloud platform. Legacy Assessments: Conduct deep-dive architectural assessments of legacy applications, evaluating technology stacks, data flows, interfaces, and operational models. Target Landing Design: Define target account structures, network placements, compute/storage patterns, and IAM configurations using ...

some or all of the following would be advantageous: Microsoft .NET ASP.NET C# SQL Server Azure Modern web technologies Modernising Legacy applications Legal technology or other regulated software environments Working with external development partners Why Apply? Lead and shape the engineering function within a growing software business. ...

with a daily rate of €500 - €700, primarily focused on server-side development within an Agile team. Key responsibilities include migrating legacy applications to a new architecture, leading IT solutions delivery, and mentoring junior colleagues. Candidates must be based in the UK and available on-site ...

Capability to translate business needs into technical solutions and explain technical constraints in business terms Willing to understand and work on legacy applications when required Willing to provide first class support to the business Preferred Qualifications Prior experience with other financial risk stack platforms such as SecDB ...

Azure Administrator (AZ104). Experience of Azure AI would also be advantageous. You will also have extensive experience of supporting on premise and legacy applications. You will have technical experience of supporting Windows Server OS, SQL Server, Linux, Desktop, M365, D365, intune, Purview, Sentinel and Defender. You will ...

distributed system on Kubernetes Participate in the entire application lifecycle, focusing on coding and debugging Manage cutting-edge technologies to improve legacy applications Collaborate with Front-end developers to integrate user-facing elements with server side logic Gather and address technical and design requirements Follow emerging technologies … onboarding process for new customers, providing guidance and support to ensure successful integration of their existing and future systems Optimizing the performance of applications for full-scale production deployments Required Qualifications: Bachelor’s degree in computer programming, computer science, or a related field Strong technical communication skills, and ability ...

Java Engineer for a contract role based in London/Hybrid. You will work as part of an Agile team to migrate a legacy application to a new event-based architecture, handling server-side deployment effectively. The ideal candidate has strong core Java expertise and experience with SpringBoot ...

Capability to translate business needs into technical solutions and explain technical constraints in business terms Willing to understand and work on legacy applications when required Preferred Qualifications Prior experience with other financial risk stack platforms such as SecDB, Quartz, or Athena Knowledge of rates products including Swaps ...

Capability to translate business needs into technical solutions and explain technical constraints in business terms Willing to understand and work on legacy applications when required Preferred Qualifications Prior experience with other financial risk stack platforms such as SecDB, Quartz, or Athena Knowledge of rates products including Swaps ...

data solutions. Work with SQL to extract, transform, validate and reconcile data from multiple source systems. Perform complex data mapping between legacy applications and target platforms, including CRM systems such as Salesforce. Carry out data quality checks, cleansing and validation to ensure accurate and reliable migrations. Explain ...

Benchling’s largest customers and prospects. Their solutions are deployed into complex enterprise IT environments, interfacing with other vendor solutions, lab instruments, and legacy applications. This is a highly visible role that partners with both external and internal teams to develop the optimal solutions that drive the most ...

support the second phase of a major platform replacement initiative within one of our Wealth Management clients. The programme is replacing several legacy platforms supporting Banking, Credit, Cash Management, Investments, Custody and Order Management. Following the delivery of the initial Banking and Credit capabilities, the next phase will … into clear programme plans, priorities and delivery outcomes. Platform Replacement & Business Transformation Lead the business workstreams associated with the replacement and exit of legacy Private Wealth platforms. Support the completion of Banking and Credit capabilities delivered through the first phase of the programme. Lead the mobilisation and delivery ...