Network Integration Engineer

LA International Computer Consultants Ltd; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

LA International is seeking a senior integrations specialist to lead global Coupa-SAP S/4HANA integrations from design through cutover. You will build APIs (REST/OData), IDocs, and BAPIs, and shape Coupa config for master data, COA, and approvals while ensuring security and performance.

You will work with middleware platforms (CPI/MuleSoft/Dell Boomi/Azure) for monitoring, CI/CD, and cross-functional stakeholder communication with Business and IT teams.

Qualifications

• Proven experience delivering global integrations between Coupa and SAP S/4HANA for complex organisations, from design through cutover and Hypercare.
• Hands-on proficiency building and managing APIs (REST/JSON, OData), IDocs, and BAPIs, including schema design, error handling, and performance tuning.
• Strong knowledge of Coupa configuration in the context of integration (supplier and ERP integrations, master data sync, COA/segments, approvals, tax, receiving, invoicing, and payment status updates).
• Strong knowledge of SAP S/4HANA Procurement/MM and FI-AP objects and processes (vendors/business partners, purchasing orgs, POs, service entry sheets, GRs, invoices, GL/CC/WBS, tax determination).
• Experience with integration Middleware or platforms (eg, SAP Integration Suite/CPI, MuleSoft, Dell Boomi, Azure Integration Services), including security, monitoring, and CI/CD.
• Excellent stakeholder management and communication skills with Business and IT; ability to articulate complex integration concepts to cross-functional audiences.
• Familiarity with project tools and ALM (eg, JIRA, Azure DevOps, Smartsheet, SolMan) and with test automation for interfaces Understanding of both Indirect and Direct Procurement process flows and data impacts across P2P and AP.

Responsibilities

• Deliver global integrations between Coupa and SAP S/4HANA from design through cutover and Hypercare.
• Build and manage APIs (REST/JSON, OData), IDocs, and BAPIs with robust error handling and performance tuning.
• Configure Coupa integration settings for suppliers, COA, master data, and transactional flows.
• Leverage middleware platforms (CPI, MuleSoft, Dell Boomi, Azure Integration Services) with security, monitoring, and CI/CD.

Skills

Self-motivated

Prioritisation

Credible

Resilient

Challenge status quo

API Engineering

OpenAPI/Swagger

REST/OData

Postman testing

SAP integration artefacts

BAPI/RFC

IDoc types

Coupa integration

OAuth2

mTLS

CI/CD for integrations

Git

Azure DevOps

Splunk/App Insights

CPI/MuleSoft dashboards

Tools

OpenAPI/Swagger

Postman

IDoc types for vendor/PO/GR/invoice

BAPI/RFC

ALE

OData services

Coupa integration config

SFTP/API

CI/CD tooling

Git

Azure DevOps

Splunk

App Insights

CPI/MuleSoft dashboards

Job description

Job Description

• Proven experience delivering global integrations between Coupa and SAP S/4HANA for complex organisations, from design through cutover and Hypercare.
• Hands-on proficiency building and managing APIs (REST/JSON, OData), IDocs, and BAPIs, including schema design, error handling, and performance tuning.
• Strong knowledge of Coupa configuration in the context of integration (supplier and ERP integrations, master data sync, COA/segments, approvals, tax, receiving, invoicing, and payment status updates).
• Strong knowledge of SAP S/4HANA Procurement/MM and FI-AP objects and processes (vendors/business partners, purchasing orgs, POs, service entry sheets, GRs, invoices, GL/CC/WBS, tax determination).
• Experience with integration Middleware or platforms (eg, SAP Integration Suite/CPI, MuleSoft, Dell Boomi, Azure Integration Services), including security, monitoring, and CI/CD.
• Excellent stakeholder management and communication skills with Business and IT; ability to articulate complex integration concepts to cross-functional audiences.
• Comfortable with ambiguity; agile and outcomes-focused mindset; experience working with upstream/downstream products (eg, MDG, ServiceNow) and third-party providers.
• Familiarity with project tools and ALM (eg, JIRA, Azure DevOps, Smartsheet, SolMan) and with test automation for interfaces Understanding of both Indirect and Direct Procurement process flows and data impacts across P2P and AP.

Skills and Capabilities Essential

• Personal: Self-motivated, able to prioritise and meet challenging deadlines; credible, resilient, and comfortable challenging the status quo to drive the best integration outcomes.
• Technical:
  • API Engineering (REST/OData), specification using OpenAPI/Swagger, Postman-based testing.
  • SAP integration artefacts (IDoc types for vendor, PO, GR, invoice; BAPI/RFC; ALE; OData services).
  • Coupa integration configuration (master data imports/exports, suppliers, COA, transactional flows, SFTP/API, file formats).
  • Security (OAuth2, mTLS, certificates, key management), and data protection.
  • Monitoring/Observability (CPI/MuleSoft dashboards, Splunk/App Insights, alerting, trace correlation).
  • CI/CD for integrations (Git, branching/versioning, automated deployment).
• Delivery: Able to plan and manage large integration work efforts, dependencies, and environment strategy across multiple waves.

LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance.

A multiple award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over consecutive years.

We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported.

We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply.

If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience.

Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.