Senior Specialist, Implementation Engineering

Checkout.com

. Provide technical support to merchants implementing Checkout.com payment processing technology .

Posted 10/18/2026full-timeTokyo • JapanSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates extensive experience in technical support and integration management within the Tech/FinTech sector, with strong coding skills in Java, JavaScript, PHP, Python, Go, or C#. Proficient in API understanding and customer relationship management, with bilingual communication in English and Chinese.

Highest-signal resume keywords

Technical Support ExperienceAPI UnderstandingJava Coding SkillsCustomer Relationship ManagementPayments Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

JavaJavaScriptPHPPythonGoNode.jsReactAPIRESTWebhooks

Soft Skills

Excellent Communication SkillsCustomer-FocusedRelationship BuildingTarget-Driven

Tools & Technologies

Checkout.com Payment ProcessingIntegration LibrariesPlugins

Industry Keywords

TechFinTechPaymentsIntegration Management

Tech Stack

Tools & technologies

AndroidiOSJavaJavaScriptNode.jsPHPPythonReactGo

About the role

Key responsibilities & impact

Provide technical support to merchants implementing Checkout.com payment processing technology
Answer merchant integration questions about configuration, debugging, documentation, testing, go-live support, and post-live support
Manage integration incidents, including investigation, troubleshooting, escalation, resolution, reporting, time tracking, and analysis
Collaborate with Merchant Configuration, Sales, Account Managers, and Merchant Care teams to resolve customer issues
Partner with Product teams to identify improvement opportunities
Advise the Manager on issues affecting customer satisfaction and recommend appropriate actions
Manage multiple customer projects and integrations simultaneously
Maintain and update libraries and plugins used in integrations

Requirements

What you’ll need

5+ years of development or technical support experience in a Tech/FinTech company
Payments experience advantageous
Understanding of APIs, REST, webhooks, and logs required
Strong coding skills in at least one of Java, JavaScript, PHP, Python, Go, or C#
Experience with Node.js and React is a plus
Knowledge of iOS/Android is a plus
Excellent communication skills and ability to build and maintain strong relationships
Ability to work in a customer-focused and target-driven environment
Good spoken and written English and Chinese
Legally authorized to work as an employee in the country of application
Willingness to work in the office three days per week

Benefits

Comp & perks

Hybrid working model with three days per week in the office
Flexible working arrangements
Ownership and meaningful work from day one
Career growth and professional development opportunities
Accessible hiring process and reasonable adjustments
Supportive, collaborative team environment