Full Stack Developer (Senior) 0386

About the Role

You will play a key role in building and evolving a large-scale
eInvoicing platform , enabling seamless exchange of financial documents across multiple systems and external partners.
This role requires deep expertise in
enterprise integration, SAP, and cloud technologies , along with the ability to design, build, and optimise highly complex, high-volume systems.

Key Responsibilities

Architecture & Integration Design

• Translate business requirements into scalable technical architectures
• Design and lead integration solutions across SAP, EAI, Java, and cloud platforms
• Define interface designs using IDoc, XML, and JSON formats
• Evaluate and modernise existing integration landscapes

Development & Implementation

• Perform hands-on Java development for integration components
• Lead implementation across complex, multi-system environments (100+ interfaces)
• Design and implement transformation logic (IDoc to XML/JSON)
• Support deployment and production readiness

Cloud & Platform Engineering

• Work with Azure and SAP Cloud Platform for integration solutions
• Drive modernisation using event-driven architectures (e.g. Kafka)
• Collaborate with DevOps teams on CI/CD, automation, and infrastructure

Monitoring & Reliability

• Implement end-to-end monitoring, logging, and observability
• Build dashboards to track system health, transactions, and KPIs
• Define and maintain operational and deployment runbooks
• Ensure high availability, performance, and scalability

Leadership & Strategy

• Engage with stakeholders to define and prioritise requirements
• Lead migration planning and recommend future-state architectures
• Mentor and guide junior developers and integration engineers
• Drive best practices across design, testing, and delivery

Essential Skills & Experience

• Strong experience in Java development within enterprise environments
• Deep knowledge of enterprise integration patterns and middleware (EAI)
• Proven SAP FI experience and integration knowledge
• Hands-on experience with IDocs and mapping to XML/JSON
• Experience working with high-volume, multi-partner integration systems
• Strong understanding of cloud platforms (Azure) and SAP Cloud Platform
• Experience implementing monitoring, logging, and observability solutions
• Strong stakeholder engagement and communication skills

Advantageous

• Experience with eInvoicing or financial systems
• Apache Kafka / event-driven architectures
• SAP integration technologies (PI/PO, CPI, BAPI)
• Docker, Kubernetes, AKS
• CI/CD pipelines (Azure DevOps, GitHub Actions, Terraform)
• Security and compliance in financial integrations
• Performance tuning and large-scale system optimisation
• Dashboarding and reporting tools (e.g. Azure dashboards, BI tools)
• AI-driven automation or analytics within DevOps/integration environments

Qualifications

• Degree in Computer Science, Software Engineering, or related field
• 5+ years experience in enterprise integration, middleware, or systems architecture
• Proven delivery of complex integration solutions across multiple systems