26 to 50 of 60 Legacy Systems Jobs in London

one. Day-to-day of the role: Define and implement the enterprise-grade SCV in GCP. Reverse-engineer and enhance the core legacy data model. Design and execute the medallion architecture for data ingestion, transformation, and activation. Integrate GCP with Salesforce Data Cloud, ensuring efficient data flows … data ingestion, transformation, and orchestration frameworks. Experience with AI/ML operationalisation, preferably with Vertex AI. Ability to assimilate complex legacy systems and streamline them into efficient new architectures. Excellent consulting and communication skills, capable of leading discussions and challenging external suppliers. Hands-on approach with ...

shared outcomes. Manage external partners and, where relevant, regulators to support improvement goals. Problem Solving & Innovation Tackle systemic constraints such as legacy systems, policies, and skills gaps. Sponsor experimentation, pilots, and measured innovation to unlock value. Risk, Security & Ethics Sponsor by-design controls in new processes. Ensure ...

best-in-class reporting and consolidation environment, with OneStream at the core. This is a pivotal role sitting at the intersection of finance, systems, and transformation, ideal for someone who enjoys combining technical accounting with change and implementation work. The Role You will play a key role … management reporting outputs Validate consolidation logic, including intercompany eliminations, FX, and ownership structures Build and refine standardised financial statements, dashboards, and KPI reporting Systems Implementation (OneStream) Translate finance requirements into system design in collaboration with stakeholders and implementation partners Contribute to data integration, chart of accounts alignment, and metadata ...

exchange integrations, building resilient real-time pipelines that process market data at scale, designing infrastructure for performance and reliability, and modernizing legacy systems that underpin a platform millions depend on daily. The work spans the full technical stack from data ingestion and processing architecture to infrastructure optimization … 8+ years backend development experience with demonstrated technical leadership as Lead/Staff/Principal Engineer Deep expertise building and operating large-scale distributed systems in production Polyglot engineering background; strong proficiency in Node.js or Golang preferred Hands-on experience designing and scaling modern database architectures (SQL and NoSQL ...

Engineering, Head of Payments, etc.) to position digital transformation initiatives and custom technology solutions. Identify client challenges around legacy systems, payments infrastructure modernization, platform engineering, data and AI, and cloud adoption, and position Endava’s services as the solution. Lead the development of proposals, solution positioning ...

underpins Outsmart’s crowdsourcing operations – a mature, revenue-generating system that has evolved over years and continues to scale. If you enjoy owning real systems, thinking architecturally, improving legacy code thoughtfully rather than rewriting it, and being trusted to deliver without heavy supervision, this role will feel … unusually well-matched. The role As Senior Fullstack Software Engineer, you will help design, build and maintain the production systems that power Outsmart’s platform. You’ll work closely with our CTO, operating as a high-agency individual contributor with genuine ownership across backend systems, infrastructure and platform ...

evolving an existing Kotlin Android app used in live rail environments. If you enjoy working across both greenfield builds and complex legacy systems , and thrive in environments where your technical decisions have real-world impact, this role is for you. Skills required: 6+ years of mobile engineering … leading mobile platform migrations Ability to make architectural decisions in high-risk, live environments Comfortable navigating ambiguity and switching between greenfield and legacy work Strong communication skills and experience in remote, cross-functional teams Desirable skills: Experience migrating from native to cross-platform apps Background in transport, logistics ...

Outside IR35)/Remote Were working with a top UK University that has decided to migrate over from old legacy systems to Salesforce Education Cloud. They require a Salesforce Functional Consultant to come on board who has strong experience of delivering migrations with strong stakeholder management ...

batch records into EBRs in Rockwell Pharmasuite utilizing existing functionality Ability to work with site SMEs to turn existing EBRs in legacy systems (P2C2, PMX, etc.) into Rockwell Pharmasuite EBRs utilizing existing functionality Ability to design Building Blocks that can be reused in multiple processes Ability ...

batch records into EBRs in Rockwell Pharmasuite utilizing existing functionality Ability to work with site SMEs to turn existing EBRs in legacy systems (P2C2, PMX, etc.) into Rockwell Pharmasuite EBRs utilizing existing functionality Ability to design Building Blocks that can be reused in multiple processes Ability ...

Manager to spearhead "New Logo" expansion into the UK & Ireland Tier 1 Main Contractor market. You will move customers from fragmented legacy systems to a unified, "Office-to-Site" digital workflow that mitigates risk and drives ROI. The Role Target Market: Exclusively focused on securing new enterprise ...

School Management Information Systems (MIS) and Data Systems Specialist is a non-teaching, operational role within the Technology, Information Literacy, and Media (TILM) department. The primary responsibility of the role is the day-to-day administration, configuration, and effective operation of the Student Information System (Veracross), which … time, stewardship of Veracross, data integrity, and reliable system operation are the priority, especially during the initial period in post. The MIS and Data Systems Specialist reports to and works under the direction of the Network and Data Integration Manager. All development, configuration, and integration work is undertaken within ...

leading liquidity providers in Europe that is looking to expand its Trading platform team. The team focuses on both low level hardware systems and high-level architectural designs of large scale systems. The platform is built to be scalable, meaning you will work on developing largescale systems that … number of hours worked (free to work at your own pace and deliver quality work). There are no legacy systems or bureaucracy to hold you back, very flat structure, allowing everyone, including the CEO, to be hands-on. What you'll need: Excellent Rust or modern ...

Transaction reporting ), is a market-leading solution for regulatory transaction reporting and reconciliation across global regimes. En:ACT automates reporting, reconciles data across systems, and maps errors directly to regulatory rules, helping firms remediate quickly, reduce risk, and meet regulatory obligations with confidence. Already trusted by more than … join at a pivotal stage as we modernize our data infrastructure, migrating from Python scripts and MySQL to Databricks and Snowflake. Our systems power regulatory reporting for major financial institutions, requiring precision, traceability, and reliability. What You'll Do Design and evolve our configuration-driven data framework in Databricks ...

Transaction reporting ), is a market-leading solution for regulatory transaction reporting and reconciliation across global regimes. En:ACT automates reporting, reconciles data across systems, and maps errors directly to regulatory rules, helping firms remediate quickly, reduce risk, and meet regulatory obligations with confidence. Already trusted by more than … join at a pivotal stage as we modernize our data infrastructure, migrating from Python scripts and MySQL to Databricks and Snowflake. Our systems power regulatory reporting for major financial institutions, requiring precision, traceability, and reliability. What You'll Do Own the architecture, roadmap and delivery for our configuration-driven ...

relational database performance optimisation Experience working with Linux, Docker, and Git Proven experience leading technical initiatives across multiple teams Experience designing scalable, high-performance systems Experience working with legacy or monolithic systems and modernising them Strong understanding of API design and distributed systems Knowledge ...

major HR data transformation programme, playing a pivotal role in shaping new data models and driving the migration from legacy Oracle systems to a modern AWS and Snowflake environment. You will be joining a high-impact team delivering new HR data products that sit at the heart … their HR data ecosystem as part of a wider digital transformation. Operating in a complex, fast-paced environment, they are modernising their core HR systems and embedding cloud-first data practices. You will join a collaborative, delivery-focused team that is building out new data foundations and establishing best ...

looking for an experienced Full Stack Engineer to join their Technology function and play a key role in migrating legacy SharePoint systems into a modern application portal built with contemporary web technologies. This is a high-impact role working closely with both technical teams and senior business … third-party vendors where required Key Requirements: 3+ years’ experience building applications with C#, SQL and React 2+ years’ experience developing or supporting SharePoint systems Strong front-end skills (HTML, CSS, JavaScript) Experience working in agile delivery environments Exposure to regulated industries (financial services preferred) Strong communication skills ...

Trade Data & Analytics to lead the strategy, engineering, and operation of its next-generation Pre‐Trade Data platform. The role will consolidate three core systems into a single, scalable platform used by Traders, Trading Analytics, Quants, and Algo developers for curve management, pricing, analytics, and pre-deal decision-making. … database decommissioning. Ensure production stability, high service standards, KPIs, and SLAs across regions. Required Experience Solid experience in data engineering, platform architecture, or distributed systems in trading or high-data environments. Hands-on Python experience and familiarity with modern frameworks; React for UI delivery. Experience with streaming/event ...

broad remit to support the development, and use of, our pricing and risk management models and systems. As well as consulting on software design, systems architecture and software engineering practices. This role will be situated in our London or Aalborg office and the successful candidate will be required … Agile environment Use of math/stats & testing libraries, as well as modern build tools. Ability to refactor code and work effectively with legacy systems. Knowledge of Object Orientation, Software Architecture and Design Patterns. Good understanding of software testing practices (unit testing, integration testing, etc.). Knowledge ...

Role A leading organisation in the aviation sector is undertaking a major HR data transformation programme, migrating from a legacy Oracle environment into Snowflake to create a unified, scalable HR data platform. The core data model has already been designed. The next phase focuses on: Building logical data … Providing guidance and support to other engineers Tech Stack Snowflake DBT Python (including Lambda for AWS workflows) AWS (data pipelines + infrastructure) Oracle (legacy system exposure beneficial) Power BI (understanding of downstream consumption) Domain Experience Experience working with HR/People data is highly desirable Strong understanding ...

project. Key Responsibilities Prepare and format data migration files for upload into NetSuite Cleanse and transform raw data extracted from legacy accounting systems Align data with predefined Chart of Accounts and field mapping documents Work with standard NetSuite import templates (e.g. customers, suppliers, open transactions, balances) Ensure … NetSuite standard import templates and key record types Strong Excel skills (e.g. VLOOKUPs, data manipulation, formatting) Experience working with large data sets and legacy system exports High attention to detail and ability to work to strict templates and guidelines Comfortable taking direction and working as part ...

Head of Core Banking Systems London 6 month contract Inside IR35 Head of Core Banking Systems needed for a leading financial organisation based in London for a 6 month contract, who are looking to employ an experienced Head of Core Banking systems to act as the expert … core banking systems with an in-depth knowledge of core banking platforms, ideally SBS/SOPRA to act as the expert on core banking systems with approximately 10 years+ experience in banking architecture, core banking engineering, or solution architecture. Some of the main duties of the Head ...

core banking platform Act as the internal subject matter expert, aligning business requirements with platform capabilities Review and challenge decisions relating to core banking systems and associated technologies Technical & Architectural Governance Deliver architectural guidance across core banking components and integrations Critically evaluate proposals from third-party partners and system … native, digital, and AI-driven integration strategies Champion event-driven architecture and modern integration patterns (AWS-aligned) Support large-scale transformation initiatives, including legacy system migration Delivery & Governance Oversee end-to-end architecture across build, test, and release cycles Collaborate with architecture, programme, and delivery stakeholders to ensure ...

customer-facing role. This position suits a Senior Infrastructure Architect from an IT MSP or Consultancy background, used to working across everything from legacy on-prem environments through hybrid estates to modern cloud-first platforms. What youll be doing As a Senior Infrastructure Architect, you will work directly … performance, and scalability Given the MSP client base, the successful Senior Infrastructure Architect must be confident modernising mixed estates while supporting business-critical legacy systems. What were looking for: Strong experience producing high-quality HLDs and LLDs Clear commercial awareness and comfort with design trade-offs Confident presenting ...