> Markdown version of [/jobs/ext/3550632-software-development-engineer](https://www.wearedevelopers.com/jobs/ext/3550632-software-development-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Software Development Engineer

- **Company:** LTD Global
- **Location:** United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Artificial Intelligence, Android Software Development, VoIP, Cloud Computing, Network Congestion, Continuous Integration, Software Debugging, Linux, Github, Apache JMeter, Load Testing, Standard Sql, Swagger, Software Engineering, Test Data, TypeScript, Web Applications, WebRTC, Openapi, Performance Testing, Postman, Appium, Hardware Testing, Software Troubleshooting, Git, Low Latency, Playwright, Software Coding, Restful APIs
- **Published:** September 30, 2026
- **Apply:** https://www.thejobnetwork.com/job/756e656a-5540-4dd9-ac0b-c55d9886c6d8/senior-software-development-engineer-in-test-sdet

## About the Role

* 5+ years of experience in Software Quality Assurance, Quality Engineering, or a related discipline.
\n

 * 4+ years of hands-on experience developing test automation.
\n

 * Strong hands-on experience with Playwright.
\n

 * Strong programming experience with TypeScript and/or JavaScript.
\n

 * Demonstrated experience designing and building a test automation framework from the ground up.
\n

 * Experience developing automated UI, functional, regression, integration, and end-to-end tests.
\n

 * Experience developing and executing automated API tests.
\n

 * Experience integrating automated tests into CI/CD pipelines.
\n

 * Strong understanding of the Software Testing Life Cycle (STLC), Agile/Scrum methodologies, regression testing, smoke testing, integration testing, and end-to-end testing.
\n

 * Experience with Git and modern source-control workflows.
\n

 * Working knowledge of SQL and relational databases.
\n

 * Strong troubleshooting, debugging, and problem-solving skills.
\n

 * Ability to distinguish among application defects, automation failures, and environment or infrastructure issues.
\n

 * Strong written and verbal communication skills.
\n

Preferred\n

WebRTC / VoIP / Telecommunications

\n
\n

 * Experience testing WebRTC applications or other real-time communications platforms.
\n

 * Familiarity with SIP and RTP.
\n

 * Experience testing VoIP, call flows, audio routing, DTMF, or similar telecommunications functionality.
\n

 * Experience testing application behavior under network degradation, latency, packet loss, or connectivity interruptions.
\n

 * Telecommunications industry experience.
\n

## Description

This is a hands-on engineering role responsible for building a scalable automation framework from the ground up, developing automated functional and regression test suites, and integrating automated testing into our CI/CD pipeline., Appium * Sauce Labs * Postman * Swagger/OpenAPI * GitHub Actions * Bitbucket Pipelines * WebRTC * SIP/RTP * JMeter/k6 * Linux