9 of 9 Remote/Hybrid Legacy Systems Jobs in London

long-term maintainability Guide API and domain design standards - clear service boundaries, consistent contracts, and pragmatic integration between modern services and legacy systems Shape event-driven and integration patterns so teams can build independently without breaking cross-squad journeys Champion automated testing, observability, and production readiness … Oversee database and schema evolution practices - migrations, data integrity, and performance - in partnership with platform and infrastructure teams Lead incident response for backend-owned systems - triage, escalation, post-incident reviews, and runbook quality Mentor engineers on PHP (Yii/Yii2), Go, Security, Performance and Optimisation - raising the bar through ...

company that's building a suite of next-generation AI products from the ground up. This isn't a role focused on maintaining legacy systems. You'll be part of a small, highly experienced engineering team responsible for transforming ambitious ideas into production-ready software. Working closely with ...

join a strategic application modernisation programme. This role sits within a technology team responsible for evolving critical business applications, supporting a transition from legacy desktop solutions to modern web-based and cloud-enabled platforms. The successful candidate will work across the full software development lifecycle, contributing … Ability to work independently in a fast-paced environment Collaborative mindset and willingness to mentor junior developers Comfortable balancing support of legacy systems alongside modernisation initiatives GCS is acting as an Employment Business in relation to this vacancy. ...

organisation manages supporters, fundraising and programmes. You'll own the solution architecture, guide the migration from legacy systems, and work closely with stakeholders and delivery partners to build a scalable, well-integrated platform. Proven experience as a Salesforce Solution Architect on nonprofit implementations Hands-on expertise with … Nonprofit Cloud Strong understanding of fundraising processes Experience leading data migration from legacy or third-party CRMs Track record of designing integrations with finance, payment and marketing platforms This is a 6-month contract, Outside IR35 working fully remote. If you are available and match the criteria above ...

with Dynamics 365 Business Central at the heart of its growth. They help ambitious small and mid sized businesses move off legacy systems such as NAV, Sage and QuickBooks onto modern cloud ERP. They combine strong delivery credentials with a people first culture, and are investing heavily ...

Microsoft Teams. About us Established in 2013, Natural Resources Wales (NRW) adopted a cloud-first strategy from the outset, free from legacy systems and large-scale migrations. Our Digital, Data and Technology (DDaT) department is structured into specialist teams that manage a multi-region Azure cloud environment … supporting critical national services, operating 24/7. Our technology estate is extensive and vital, including over 100 web applications, real-time modelling systems, public alerting tools, and IoT data from 650+ remote sites. This work supports public safety, environmental protection, and high-quality service delivery. Looking ahead ...

complex application and database dependencies across the payroll landscape. Coordinate system integration points with the wider enterprise estate. Lead data archiving and legacy system decommissioning. Manage third-party vendors and translate technical requirements for business stakeholders. Requirements: Strong background in Application Service Management and cross-functional IT coordination. ...

ensuring compatibility across multiple protocols and legacy systems. This would be ideal for someone who really enjoys getting to grips with how systems work and wants to contribute to solving complex engineering problems. The following tasks are not exhaustive but will give you a good indication ...

integrations, identify security gaps and help deliver improvements. Alongside this, you'll shape new customer portals and ecommerce functionality, supporting the replacement of legacy systems. This Ecommerce & Payments Technical Lead role offers the opportunity to tackle immediate payment fraud challenges while helping build secure, reliable online experiences … secure checkout journeys. Implementing payment integrations and digital wallet functionality. Guiding developers through technical design, implementation and testing. Supporting the replacement of legacy ecommerce functionality. What's in it for you? £500-£600 per day. Fully remote working. A 12-month contract. Ownership of meaningful ecommerce and payment ...