Senior API Integration Engineer: MuleSoft, SAP, Salesforce

Toptal; Kildare; Hybrid; EUR 75,000 - 110,000; Full time

Job summary

Toptal is seeking a Senior Integration Engineer to build and operate integration products connecting Salesforce, SAP, and a carrier data lake. You will own end-to-end production lifecycle, including API design, mappings, testing, monitoring, and recovery.

Ideal candidates have 5+ years of integration engineering experience with MuleSoft or an equivalent ESB, and proven SAP and Salesforce integration skills.

Qualifications

• 5+ years in integration engineering or a related role.
• Hands-on MuleSoft or similar ESB/API platform experience.
• Experience with SAP integration (IDoc/API/BAPI) and Salesforce.
• Knowledge of data lake ingestion patterns and API contracts.

Responsibilities

• Design and implement MuleSoft/API integrations across Salesforce, SAP and data lake.
• Define API contracts, mappings, transformations and tests.
• Monitor, troubleshoot, and resolve production integration issues.
• Improve reliability, observability and operational efficiency of integrations.
• Leverage AI copilots to accelerate mapping, API stubs and documentation.

Skills

Ownership

Troubleshooting

System design

Mentoring

Tools

MuleSoft

SAP

Salesforce

Data Lake

Data Modeler

APIs

AI copilots

Job description

Toptal is seeking a Senior Integration Engineer to build and operate integration products connecting Salesforce, SAP, and a carrier data lake. You will own end-to-end production lifecycle, including API design, mappings, testing, monitoring, and recovery.

Ideal candidates have 5+ years of integration engineering experience with MuleSoft or an equivalent ESB, and proven SAP and Salesforce integration skills.