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Fiserv

Technical Account Manager

Fiserv

Technical Account Manager at Fiserv providing client-facing technical support and API integration guidance. Engaging with customers in the fintech industry for seamless payment gateway integration.

Posted 6/21/2026full-timeSingapore • 🇸🇬 SingaporeSeniorLeadWebsite

Tech Stack

Tools & technologies
JavaJavaScriptPHPPythonRuby

About the role

Key responsibilities & impact
  • Act as the primary technical liaison for clients integrating with our payment gateway API
  • Provide consultative guidance from initial design to production deployment
  • Interpret client business requirements and translate them into practical implementation strategies
  • Support clients across multiple programming languages and frameworks
  • Review client API payloads, logs, and code samples to identify issues and provide actionable solutions
  • Maintain deep knowledge of API specifications, SDKs, and authentication models
  • Partner with product and engineering teams to relay client feedback and drive platform improvements
  • Support Client Implementations, Solution Engineers, and Product teams while creating integration guides and troubleshooting playbooks
  • Participate in client calls, technical workshops, and integration reviews

Requirements

What you’ll need
  • 10+ years of experience in technical integration, solutions engineering, or API-focused support
  • Strong understanding of REST APIs, JSON, webhooks, and authentication models (OAuth, API keys, HMAC)
  • Proficiency in at least one modern language (e.g., Java, Python, JavaScript, C#, PHP, Ruby)
  • Experience troubleshooting integrations involving HTTP requests, API responses, network issues, and application logs
  • Excellent ability to simplify complex concepts for both technical and non-technical audiences
  • Ability to thrive in a fast-paced environment and support emerging features with minimal guidance.

Benefits

Comp & perks
  • Health insurance
  • Retirement plans
  • Professional development opportunities

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
API integrationREST APIsJSONwebhooksOAuthAPI keysHMACJavaPythonJavaScript
Soft Skills
consultative guidancesimplifying complex conceptscommunicationproblem-solvingcollaborationadaptabilityclient supporttechnical workshopsfeedback relaytroubleshooting