Integration Engineer

Cardo Group is a trusted provider of building maintenance, refurbishment, and retrofit services for social housing and public sector buildings across the UK. With nationwide coverage and skilled local teams, we deliver a reliable end-to-end service that ensures homes and public spaces are safe, sustainable, and well-maintained.

We specialise in responsive repairs and voids, planned maintenance, energy-efficiency upgrades, compliance works, and major improvement programmes. Our approach combines quality workmanship, strong resident communication, and efficient project delivery to achieve the best outcomes for customers and communities.

Driven by ambitious growth plans, we continue to expand our capabilities and adapt to the evolving needs of our clients. Our reputation is built on consistent service delivery, trusted partnerships, and a commitment to doing things the right way. As we grow, so do the opportunities – for our people, our clients, and the communities we support.

Cardo Group is becoming one of the UK’s most forward-thinking maintenance and retrofit providers. Do you want to be part of something great?

The Integration Engineer / API Engineer is responsible for building, maintaining and supporting the integrations that connect Cardo Group's business systems, applications, suppliers and data platforms.

Working closely with the Head of Data & Analytics, Solution / Technical Engineers, Data Engineers, business stakeholders and third-party suppliers, the role will deliver secure, reliable and scalable APIs, connectors and integration services that enable trusted data exchange across the organisation.

The successful candidate will play a key role in delivering Cardo Group's mission to Connect Systems. Trust Data. Deliver Insight. Drive Value. by ensuring information flows efficiently between operational systems, external partners and the enterprise data platform.

• Design, develop and maintain APIs and integration services
• Build and support RESTful API integrations between internal and third-party systems
• Implement API authentication and security mechanisms including API Keys, OAuth2, JWT and token-based authentication
• Produce and maintain API documentation and interface specifications
• Support API testing, versioning and lifecycle management
• Ensure APIs are performant, secure and scalable

• Design and develop integration solutions to meet business and technical requirements
• Produce integration specifications, data mappings and interface documentation
• Define source-to-target mappings and transformation requirements
• Support the onboarding of new systems, suppliers and data sources
• Work with Solution / Technical Engineers to ensure integrations align with agreed architecture and standards
• Collaborate with business stakeholders to understand integration requirements and deliver solutions that support operational processes

• Build and maintain integrations between cloud, on-premise and third-party applications
• Develop connectors using APIs, web services, SFTP and file-based integration methods
• Configure and support webhook and event-driven integrations
• Support integration requirements for new system implementations and business initiatives
• Maintain integration catalogues and interface inventories
• Ensure integration services remain reliable, supportable and aligned to business requirements

• Build and maintain data extraction processes using APIs, web services and file-based integrations
• Implement integration-level transformations and mappings to support system interoperability
• Support source system onboarding and data discovery activities
• Work closely with Data Engineers to…