51 to 75 of 132 Legacy Systems Jobs in the City of London

Our global client is looking for a D365 F&O specialist with extensive expeirence migrating from legacy to D365 F&O. This is a hybrid role outside … IR35 initially for 9 months with a good chance to extend. Data Migration Lead tasked with overseeing the planning, execution, and management of data transfers from legacy systems to Microsoft Dynamics 365. Responsibilities include ensuring data accuracy, consistency, and compliance with business needs throughout the entire migration lifecycle." Strong understanding of data migration principles and best practices. … techniques. Experience in delivering D365F&O and integration using Azure services. Successfully migrated Dynamics 365 F&O multiple times, with proven experience leading data migration from legacy systems to D365. More ❯

Our global client is looking for a D365 F&O specialist with extensive expeirence migrating from legacy to D365 F&O. This is a hybrid role outside … IR35 initially for 9 months with a good chance to extend. Data Migration Lead tasked with overseeing the planning, execution, and management of data transfers from legacy systems to Microsoft Dynamics 365. Responsibilities include ensuring data accuracy, consistency, and compliance with business needs throughout the entire migration lifecycle." Strong understanding of data migration principles and best practices. … techniques. Experience in delivering D365F&O and integration using Azure services. Successfully migrated Dynamics 365 F&O multiple times, with proven experience leading data migration from legacy systems to D365. More ❯

Posted: 16.06.2025 Expiry Date: 31.07.2025 col-wide Job Description: Our global client is looking for a D365 F&O specialist with extensive experience migrating from legacy systems to D365 F&O. This is a hybrid role outside IR35 initially for 9 months with a good chance to extend. The Data Migration Lead will oversee the planning, execution … and management of data transfers from legacy systems to Microsoft Dynamics 365. Responsibilities include ensuring data accuracy, consistency, and compliance with business needs throughout the migration lifecycle. Required skills include a strong understanding of data migration principles and best practices, experience with ETL tools and techniques, and expertise in delivering D365 F&O integrations using Azure services. … Proven success in migrating Dynamics 365 F&O multiple times and leading data migration projects from legacy systems is essential. #J-18808-Ljbffr More ❯

and delivery methodologies (Agile, Waterfall, hybrid approaches). Excellent documentation and planning skills – able to clearly articulate requirements, scope, and deliverables. Experience in environments transitioning from legacy systems or mixed technology landscapes. Desirable Qualifications Microsoft certifications in SharePoint or related technologies. Formal project management qualifications (e.g. PRINCE2, PMP, AgilePM). Experience working within regulated industries or with More ❯

and delivery methodologies (Agile, Waterfall, hybrid approaches). Excellent documentation and planning skills – able to clearly articulate requirements, scope, and deliverables. Experience in environments transitioning from legacy systems or mixed technology landscapes. Desirable Qualifications Microsoft certifications in SharePoint or related technologies. Formal project management qualifications (e.g. PRINCE2, PMP, AgilePM). Experience working within regulated industries or with More ❯

and data residency requirements. Oversee the planning and execution of phased migration strategies, including early delivery of decoupled processes to reduce risk. Implement replacement solutions for legacy systems (e.g., fax, voice recording, application access). Act as business lead for final migration phases, managing detailed plans from analysis through to operational readiness and go-live. Coordinate cross More ❯

and data residency requirements. Oversee the planning and execution of phased migration strategies, including early delivery of decoupled processes to reduce risk. Implement replacement solutions for legacy systems (e.g., fax, voice recording, application access). Act as business lead for final migration phases, managing detailed plans from analysis through to operational readiness and go-live. Coordinate cross More ❯

Date: 31.07.2025 col-wide Job Description: We’re working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands-on role within a high-performing team modernising legacy platforms, improving availability, and delivering new functionality across the estate. You’ll be … also involves guiding CI/CD improvements, REST API design, and steering collaborative technical decisions across squads. What they’re looking for: Proven experience supporting large-scale, business-critical systems Strong background in Java and ideally C# Some front end exposure (Angular ideally but other frameworks considered). Note the role is back end focused. Comfortable working with legacy systems and large enterprise environments Confident leading technical conversations across multiple engineering disciplines Experience with CI/CD pipelines and modern deployment practices Greenfield REST API design including HATEOAS implementation Angular, React or frontend exposure Familiarity with Snowflake or backend SQL variants This is a great opportunity for an experienced Java Developer to join a prestigious financial More ❯

covering the ingestion, storage, transformation and distribution of tick, timeseries, reference and alternative datasets. The technology stack is similarly varied including a range of legacy and modern systems, across on-premises and cloud infrastructure with technologies and tooling such as Python, dbt, KDB+, Snowflake, SQL and interfacing with Market Data vendors such as Bloomberg, Refinitiv, Factset and More ❯

covering the ingestion, storage, transformation and distribution of tick, timeseries, reference and alternative datasets. The technology stack is similarly varied including a range of legacy and modern systems, across on-premises and cloud infrastructure with technologies and tooling such as Python, dbt, KDB+, Snowflake, SQL and interfacing with Market Data vendors such as Bloomberg, Refinitiv, Factset and More ❯

covering the ingestion, storage, transformation and distribution of tick, timeseries, reference and alternative datasets. The technology stack is similarly varied including a range of legacy and modern systems, across on-premises and cloud infrastructure with technologies and tooling such as Python, dbt, KDB+, Snowflake, SQL and interfacing with Market Data vendors such as Bloomberg, Refinitiv, Factset and More ❯

take the lead on building Python-based AI solutions and modern data-driven applications. Key Responsibilities: Design, build, and maintain scalable Python applications. Modernise and enhance legacy systems using AI/ML approaches. Develop APIs and data pipelines for both batch and real-time processing. Build, train, and deploy AI models with a focus on performance, accuracy More ❯

take the lead on building Python-based AI solutions and modern data-driven applications. Key Responsibilities: Design, build, and maintain scalable Python applications. Modernise and enhance legacy systems using AI/ML approaches. Develop APIs and data pipelines for both batch and real-time processing. Build, train, and deploy AI models with a focus on performance, accuracy More ❯

improve existing Anaplan models. Provide guidance and train users on how to maximize Anaplan capabilities. Monitor and ensure that users adopt the new planning tools, minimizing reliance on legacy systems. Stay up to date with the latest product releases on Anaplan, ensuring best practices are followed. The Successful Applicant The successful candidate will have: Experience with building and More ❯

s London team. This is a high-impact role involving the design, development, and deployment of backend services that power our client’s security platform. You’ll work on systems at significant scale, leading both engineering efforts and mentoring team members, while collaborating with globally distributed teams in the US, Ireland and India. Responsibilities: Design, develop, and maintain Java … using Spring Boot , REST/GraphQL , Kafka , PostgreSQL , and RabbitMQ . Contribute to infrastructure modernisation efforts, working closely with DevOps teams on Kubernetes , CI/CD pipelines , and legacy system migrations. Innovate across the stack, taking ownership of key projects and delivering performant, scalable solutions. Lead engineering best practices including coding standards, unit testing, code reviews, and system … Kibana , Hadoop/HBase , OpenSearch , or VPN/proxy architectures. Strong grasp of software security principles , system performance optimisation, and infrastructure reliability. Experience working on large-scale , production-grade systems with distributed architectures. Ideal Candidate will: Bring technical vision , initiative, and a passion for exploring and implementing emerging technologies. Are a natural technical leader with experience mentoring engineers and More ❯

s London team. This is a high-impact role involving the design, development, and deployment of backend services that power our client’s security platform. You’ll work on systems at significant scale, leading both engineering efforts and mentoring team members, while collaborating with globally distributed teams in the US, Ireland and India. Responsibilities: Design, develop, and maintain Java … using Spring Boot , REST/GraphQL , Kafka , PostgreSQL , and RabbitMQ . Contribute to infrastructure modernisation efforts, working closely with DevOps teams on Kubernetes , CI/CD pipelines , and legacy system migrations. Innovate across the stack, taking ownership of key projects and delivering performant, scalable solutions. Lead engineering best practices including coding standards, unit testing, code reviews, and system … Kibana , Hadoop/HBase , OpenSearch , or VPN/proxy architectures. Strong grasp of software security principles , system performance optimisation, and infrastructure reliability. Experience working on large-scale , production-grade systems with distributed architectures. Ideal Candidate will: Bring technical vision , initiative, and a passion for exploring and implementing emerging technologies. Are a natural technical leader with experience mentoring engineers and More ❯

in collaboration with the teams. Technical Leadership Own the architecture of the company's data platform, ensuring scalability, reliability, and security. Drive modernisation by transitioning from legacy systems to a lean, scalable platform. Act as a lead expert for technologies such as AWS, DBT, Airflow, and Databricks. Establish best practices for data modelling, ingestion, storage, streaming, and More ❯

in collaboration with the teams. Technical Leadership Own the architecture of the company's data platform, ensuring scalability, reliability, and security. Drive modernisation by transitioning from legacy systems to a lean, scalable platform. Act as a lead expert for technologies such as AWS, DBT, Airflow, and Databricks. Establish best practices for data modelling, ingestion, storage, streaming, and More ❯

inside IR35 (gross umbrella rate) We’re working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands-on Principal role requiring an experienced engineer with a finance background to come in and stabilise an existing platform. This Java-based stabilisation/rescue … also involves guiding CI/CD improvements, REST API design, and steering collaborative technical decisions across squads. What they’re looking for: Proven experience supporting large-scale, business-critical systems in the finance industry (all areas of finance considered) Strong background in Java and ideally C# Some front-end exposure in Angular - this is mandatory, but doesn't need … to be recent or extensive Comfortable working with legacy systems and large enterprise environments Confident in leading technical conversations across multiple engineering disciplines Experience with CI/CD pipelines and modern deployment practices REST API design This is a great opportunity for an experienced Java Developer to join a prestigious financial player. If you’re someone who More ❯

inside IR35 (gross umbrella rate) We’re working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands-on Principal role requiring an experienced engineer with a finance background to come in and stabilise an existing platform. This Java-based stabilisation/rescue … also involves guiding CI/CD improvements, REST API design, and steering collaborative technical decisions across squads. What they’re looking for: Proven experience supporting large-scale, business-critical systems in the finance industry (all areas of finance considered) Strong background in Java and ideally C# Some front-end exposure in Angular - this is mandatory, but doesn't need … to be recent or extensive Comfortable working with legacy systems and large enterprise environments Confident in leading technical conversations across multiple engineering disciplines Experience with CI/CD pipelines and modern deployment practices REST API design This is a great opportunity for an experienced Java Developer to join a prestigious financial player. If you’re someone who More ❯

environments and has hands-on experience with collaboration technologies and cloud migration. Project Scope This is a multi-year programme to migrate all video conferencing infrastructure from on-premise systems to cloud-based services across global offices. The successful Programme Manager will oversee one of three major migration workstreams, working closely with client stakeholders, delivery partners, and internal teams. … Services sector delivery experience (preferably with Tier 1 banks) Proven track record delivering video conferencing/collaboration technology programmes Hands-on experience with cloud migration from legacy systems Comfortable operating in large, matrixed, global environments Strong knowledge of collaboration tools and networking (e.g. Quadcam, AV systems, ticketing platforms) Desirable Skills Experience with site implementation activities and More ❯

environments and has hands-on experience with collaboration technologies and cloud migration. Project Scope This is a multi-year programme to migrate all video conferencing infrastructure from on-premise systems to cloud-based services across global offices. The successful Programme Manager will oversee one of three major migration workstreams, working closely with client stakeholders, delivery partners, and internal teams. … Services sector delivery experience (preferably with Tier 1 banks) Proven track record delivering video conferencing/collaboration technology programmes Hands-on experience with cloud migration from legacy systems Comfortable operating in large, matrixed, global environments Strong knowledge of collaboration tools and networking (e.g. Quadcam, AV systems, ticketing platforms) Desirable Skills Experience with site implementation activities and More ❯

world of blockchain and tokenised assets. Our flagship product, the Ownera Router, powered by the open FinP2P protocol, enables seamless connectivity between institutions, blockchains, and legacy financial systems to unlock new opportunities in digital asset trading and tokenization. Job Overview As a Solutions Engineer , you will partner with the Sales, Product, and Engineering teams to support the … s degree in Computer Science, Engineering, Finance, or a related field. Strong understanding of blockchain technology, digital assets, and tokenization. Experience with financial infrastructure, APIs, and legacy systems integration. Beneficial to have experience with scripting (Python, Bash), knowledge of Kubernetes/Docker, or experience working with financial data platforms. Sales & Business Development Experience: 3–6 years of More ❯

world of blockchain and tokenised assets. Our flagship product, the Ownera Router, powered by the open FinP2P protocol, enables seamless connectivity between institutions, blockchains, and legacy financial systems to unlock new opportunities in digital asset trading and tokenization. Job Overview As a Solutions Engineer , you will partner with the Sales, Product, and Engineering teams to support the … s degree in Computer Science, Engineering, Finance, or a related field. Strong understanding of blockchain technology, digital assets, and tokenization. Experience with financial infrastructure, APIs, and legacy systems integration. Beneficial to have experience with scripting (Python, Bash), knowledge of Kubernetes/Docker, or experience working with financial data platforms. Sales & Business Development Experience: 3–6 years of More ❯

world of blockchain and tokenised assets. Our flagship product, the Ownera Router, powered by the open FinP2P protocol, enables seamless connectivity between institutions, blockchains, and legacy financial systems to unlock new opportunities in digital asset trading and tokenization. Job Overview As a Solutions Engineer , you will partner with the Sales, Product, and Engineering teams to support the … s degree in Computer Science, Engineering, Finance, or a related field. Strong understanding of blockchain technology, digital assets, and tokenization. Experience with financial infrastructure, APIs, and legacy systems integration. Beneficial to have experience with scripting (Python, Bash), knowledge of Kubernetes/Docker, or experience working with financial data platforms. Sales & Business Development Experience: 3–6 years of More ❯