Technical CSM: API Migration & Modernization

Sinch; Manila; On-site; PHP 900,000 - 1,200,000; Part time

Job summary

Sinch Philippines is seeking a Technical Customer Success Manager/Migration Specialist to drive the legacy API deprecation project. You will guide business customers from deprecated APIs to Engage REST API or the modern messaging platform, ensuring smooth transitions.

You’ll blend customer empathy with technical guidance, coordinate with internal teams, and help clients unlock features like RCS and WhatsApp while maintaining timelines.

Qualifications

• 4+ years in Customer Success, Account Management, Technical Account Management, or Technical Support in SaaS or Telecommunications.
• Proven ability to lead discovery calls and manage migration projects.
• Strong commercial acumen and resilience in challenging conversations and migrations.
• Familiarity with REST APIs, webhooks, HTTP status codes, and SDLC; able to communicate with developers.

Responsibilities

• Conduct proactive discovery calls with key technical and business stakeholders.
• Assist customers in migrating from legacy APIs to modern Sinch platforms.
• Present benefits of Engage REST API and app.sinch.com.
• Address objections and provide migration pathways.
• Track migration milestones across CRM and project tools.
• Collaborate with CSM teams, Support Engineers, and Product Managers.

Skills

Customer Success

Account Management

Technical Account Management

Technical Support

REST API concepts

CRM tools

Tools

CRM Systems

Project Tracking Tools

REST API concepts

Job description

Sinch Philippines is seeking a Technical Customer Success Manager/Migration Specialist to drive the legacy API deprecation project. You will guide business customers from deprecated APIs to Engage REST API or the modern messaging platform, ensuring smooth transitions.

You’ll blend customer empathy with technical guidance, coordinate with internal teams, and help clients unlock features like RCS and WhatsApp while maintaining timelines.