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Posted Jun 4, 2026

Experienced Customer Success Engineer – API-First Payment Technology

At careerzynith, we're reimagining global financial infrastructure by building seamless, borderless money movement for modern businesses. As a fast-growing payment technology scale-up, we connect traditional finance with digital assets to power the next generation of corporate finance. Our platform enables companies to scale faster, operate smarter, and stay in control. **Join Our Team** We're looking for a seasoned Customer Success Engineer to join our lean, focused team solving real problems for real users – fast. As a technical lead for some of our most strategic, high-value clients, you'll be the go-to expert for complex issues, ensuring smooth integrations, fast resolutions, and deep confidence in our platform. **About You** You're a seasoned professional with a passion for delivering exceptional customer experiences. You thrive in high-impact environments, love getting close to both the customer and the product, and want to be part of a team that's shaping the future of financial infrastructure. With a strong background in technical support, solutions engineering, or implementation, you're well-versed in REST APIs, authentication protocols, error handling, and developer tools. **What You'll Do** As a Customer Success Engineer at careerzynith, you'll: * Act as the technical lead for a portfolio of VIP clients, troubleshooting and resolving complex issues across infrastructure, product, and workflow layers, collaborating closely with Engineering and Product as needed. * Join regular client calls alongside Customer Success and Relationship Managers, proactively advising clients and preempting technical challenges. * Triage and manage technical escalations with urgency and clarity, ensuring timely communication and resolution across internal teams. * Contribute to customer-facing documentation and internal runbooks, particularly for complex or custom workflows. * Partner with internal teams to advocate for client needs – providing structured feedback, supporting incident postmortems, and shaping support strategy for high-touch accounts. * Continually improve the client experience by identifying tooling gaps, support inefficiencies, and automation opportunities – and helping close them. **What You'll Need to Succeed** To excel in this role, you'll need: * Business level English and Mandarin (non-negotiable) * 6+ years in technical support, solutions engineering, or implementation within a software, fintech, or payments environment * Experience working directly with enterprise or high-value clients in a fast-paced setting, ideally in fintech or API-first companies * Familiarity with REST APIs, authentication protocols, error handling, and developer tools like Postman, logs, and curl * Strong communication and collaboration skills – able to build trust with clients and internal stakeholders alike * Comfort managing multiple priorities and working across functions to drive resolution * Highly organized and detail-oriented, with a bias toward ownership and follow-through * Ability to stay calm under pressure and think clearly during incidents or escalations **Nice to Have** While not required, it's a plus if you have: * Previous payment industry experience * Experience working in a fully remotely capacity in a 24x7 environment **Our Culture** At careerzynith, we're committed to creating a work environment that's inclusive, supportive, and empowering. We believe in: * Flexible work arrangements that prioritize work-life balance * Ongoing learning and development opportunities to help you grow professionally * A culture of open communication, transparency, and feedback * Recognition and rewards for outstanding performance and contributions * A comprehensive benefits package that includes 20 days of annual leave, health insurance, and more **Join Our Team Today** If you're passionate about delivering exceptional customer experiences, working with cutting-edge technology, and being part of a fast-growing scale-up, we want to hear from you. Apply now to become a part of our careerzynith team and help shape the future of financial infrastructure.