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System Integration Engineer (Mulesoft)

Singapore Telecommunications Limited

D14 Geylang, EunosPermanentS$5,500 – S$8,500/mo

Posted 23 Jun 2026

About this role

An Integration Engineer with hands-on experience in API integration projects. The ideal candidate will bridge the gap between business stakeholders and technical teams, driving seamless API-based connectivity across systems and ensuring integration solutions align with enterprise architecture and business objectives. Make an impact by: Business Requirements & Analysis Collaborate with business users, product owners, and architects to gather, document, and refine integration requirements. Translate business processes and functional requirements into API specifications, data mappings, and integration use cases. Conduct analysis between existing systems and desired integration outcomes. API Integration & Design Support Work closely with MuleSoft developers and architects to define API interfaces, message structures, and validation rules. Create detailed specifications including RAML or TMForum definitions, payload examples, and data transformation logic. Participate in API design reviews and ensure adherence to enterprise integration standards and governance frameworks. Project Delivery & Documentation Support end-to-end integration delivery across planning, testing, and deployment phases. Prepare project documentation such as user stories, process flows, sequence diagrams, and integration test cases. Validate implemented APIs against business requirements and assist in Sanity Test and user acceptance testing (UAT). Stakeholder Management Act as the liaison between business users, ServiceNow development teams, and vendors (e.g., Mulesoft, ServiceNow, in-house core systems). Communicate project status, risks, and issues effectively to both technical and non-technical stakeholders. Governance & Continuous Improvement Assist in maintaining API documentation portals and reuse catalogues. Identify opportunities to streamline integration processes and promote reuse across applications. Contribute to establishing best practices for API lifecycle management, security, and v…

What they're looking for

Use casesFunctional Requirement SpecificationTechnical OperationsScrum

About Singapore Telecommunications Limited

Industry: Information & communicationsWebsite ↗

Frequently asked questions

What does a System Integration Engineer (Mulesoft) at Singapore Telecommunications Limited do?

An Integration Engineer with hands-on experience in API integration projects. The ideal candidate will bridge the gap between business stakeholders and technical teams, driving seamless API-based connectivity across systems and ensuring integration solutions align with enterprise architecture and bu…

What skills does this System Integration Engineer (Mulesoft) role need?

Key skills for this role include Use cases, Functional Requirement Specification, Technical Operations, Scrum.

How much does a System Integration Engineer (Mulesoft) at Singapore Telecommunications Limited pay?

This role lists a salary of S$5,500 – S$8,500 per month.

Is this System Integration Engineer (Mulesoft) role remote, hybrid, or on-site?

The listing is based in D14 Geylang, Eunos. Check the posting for remote or hybrid options.

How do I apply for this System Integration Engineer (Mulesoft) role?

You can apply directly on Singapore Telecommunications Limited's careers page. ApplyLah can tailor your résumé and cover letter to this exact role in seconds first.