REST API Jobs in Thailand.
All active REST API roles based in Thailand.
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Product Support Engineer: APAC (Remote)
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About Telnyx
Telnyx is an industry leader that's not just imagining the future of global connectivity—we're building it. From architecting and amplifying the reach of a private, global, multi-cloud IP network, to bringing hyperlocal edge technology right to your fingertips through intuitive APIs, we're shaping a new era of seamless interconnection between people, devices, and applications.
We're driven by a desire to transform and modernize what's antiquated, automate the manual, and solve real-world problems through innovative connectivity solutions. As a testament to our success, we're proud to stand as a financially stable and profitable company. Our robust profitability allows us not only to invest in pioneering technologies but also to foster an environment of continuous learning and growth for our team.
Our collective vision is a world where borderless connectivity fuels limitless innovation. By joining us, you can be part of laying the foundations for this interconnected future. We're currently seeking passionate individuals who are excited about the opportunity to contribute to an industry-shaping company while growing their own skills and careers.
About the Role
We're looking for a curious, technically-minded problem solver — not someone to just close tickets.
You'll troubleshoot complex customer issues across voice, messaging, APIs, IoT, and AI products, digging into networking problems, debugging integrations, and analysing logs alongside engineering teams. But this role goes further: we're building an AI-first support model, and as you develop product expertise, you'll help shape it — building bots, automating workflows, and turning repetitive tasks into cron jobs. If you've ever spotted a repetitive task and actually built the fix for it, you'll fit right in. A background in software engineering, networking, or a related technical field (however you got there) is ideal — We care about what you can do, not where you learned it. For all APAC candidates in region this role works Sunday through to Thursday, 9pm - 7am UTC
What You'll Do
- Troubleshoot: complex customer issues across networking, APIs, and communications products
- Investigate: using tools like Postman, cURL, Wireshark, Linux terminal and our internal tooling
- Collaborate: with customers, vendors, and engineering teams to resolve cases
- Automate: contribute to bot-building and workflow automation
- Document: solutions and improve self-service resources
- Learn: VoIP protocols, internal systems, and new technologies as the role evolves
Your Toolkit
- Troubleshooting: Postman, cURL, Wireshark, sngrep, Linux terminal
- Ticketing and Comms: Zendesk, Slack
- Collaboration: Google Workspace (Gmail, Calendar, Docs, Sheets, Meet)
- Automation: n8n, Zapier, OpenClaw (internal AI platform), scripting (Python, Bash, etc.)
- Version Control: GitHub
- Analytics: Metabase, Graylog, Jira
What We're Looking For
Must-Have
- Background in Computer Science, IT, networking, or equivalent hands-on experience
- Networking fundamentals: solid understanding of how the internet works, including DNS, routing, IP addressing, and HTTP/HTTPS
- API experience: comfortable with REST APIs, webhooks, and tools like Postman or cURL
- Linux terminal proficiency: comfortable navigating filesystems, reading logs, and running commands
- Problem-solving mindset: you dig into issues, ask good questions, and don't give up easily
- Communication skills: you'll need to be highly proficient in English, both written and verbal - owning customer communication and technical documentation from day one
Nice-to-Have
- Familiarity with scripting or programming (Python, Bash, JavaScript, or similar)
- Understanding of AI concepts such as RAG, MCPs, embeddings, and prompt engineering
- Experience using n8n, Zapier, Git/GitHub, or similar
You don’t need to tick every box - if you’re keen to learn that's the box that matters most !
Ready to apply?
Apply to Telnyx
QA Engineer (fixed-term contract)
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Who We Are
Located in the heart of Bangkok’s Phrom Phong District, Sertis is ASEAN's leading Data and AI engineering and solutions company. Since 2014, our advanced solutions and products have powered over 400 enterprise Data and AI deployments at the region’s leading companies and conglomerates. We are also a member firm of Andersen Consulting, a global consulting practice integrating business strategy, digital transformation, and AI-driven technology solutions with Andersen Global’s world-class expertise.
What We Do
Sertis provides both productized and bespoke AI and Data solutions for our Customers, optimizing and commercializing their data in ways that activate real business results. Our 140+ team have developed product offerings and IP ranging from advanced Computer Vision applications accredited Global Top 20 by NIST, to automated insights monetization for Retailers, eKYC for financial institutions, AI-driven agricultural safety assurance, precision steel cutting, trading algorithms for hedge funds, and enterprise knowledge management systems based on AI.
Our Aspiration
We are data and AI pioneers, dedicated to enhancing the economic and social lives of our customers via technology. We are not just living in history, we are making history everyday. In becoming one of the world’s leading Data and AI companies, we always double-down on remaining a place where a diverse mix of talent wants to come, do their best work, and stay. We pride ourselves on bringing the best talent worldwide into a culture that encourages learning, growth opportunities, innovative contributions, and a sense of ownership. As part of Andersen Consulting, we are committed to delivering best-in-class Data and AI solutions—aligned with a global platform known for innovation, integration, and impact—while continuing to set benchmarks in the region and beyond.
For more information, please visit: sertiscorp.com
We are looking for a QA Engineer with experience in validating Java codebase migrations, specifically upgrading systems from Java 8 to Java 21.
This role is execution-focused and suited for QA engineers who can ensure system stability, correctness, and performance throughout the migration process. You will work closely with Backend Engineers and DevOps to validate changes, identify risks, and ensure production readiness.
*This is a fully remote role, working under US Time zone.
In this role, you will get to:
- Design and execute test strategies for Java migration (Java 8 → Java 21).
- Validate functional and non-functional behavior of migrated services.
- Identify edge cases and compatibility issues introduced during migration .
- Develop and maintain automated test cases for API and backend services.
- Perform functional, integration, and regression testing across the application.
- Collaborate with Java Developers to understand code changes and define test scenarios.
- Set up and maintain test automation infrastructure (test runners, CI integration, reporting).
- Execute API testing using tools such as Postman, RestAssured, or similar.
- Log, track, and support resolution of defects with clear root cause analysis.
- Maintain test documentation, test cases, and validation reports.
You’ll be successful if you have:
- 2–4 years of experience in QA, test automation, or backend testing with at least 1–2 years in a Java-based testing environment.
- Familiarity with Java and understanding of Java version differences (Java 8 to 21).
- Strong experience in API testing and backend system validation.
- Hands-on experience with test automation tools (Selenium, Playwright, or similar).
- Familiarity with test management and defect tracking tools (Jira, TestRail, or similar).
- Experience integrating automated tests into CI/CD pipelines (Jenkins, GitHub Actions, etc.).
- Strong English communication skills both in written and spoken to communicate with the US team smoothly.
- Willing to work remotely in the US time zones.
It’s Nice If You Have:
- Experience testing REST APIs using tools like RestAssured, Postman, or similar.
- Familiarity with performance/load testing tools (JMeter, K6 or similar).
- Exposure to containerized environments (Docker, Kubernetes).
- Understanding of logging, monitoring, and observability tools.
- Experience working in fintech or high-transaction systems.
What this opportunity offers
- Fully remote position (work from anywhere under the US time zones).
- Opportunity to learn modern Java practices on a real migration project with senior mentorship.
- Collaborative and supportive team environment.
APPLY NOW!
Ready to apply?
Apply to Sertis