Say hello to opportunities.

If you’re looking to be part of what’s next in communication, you’re in the right place.

At Ring Central, we believe the best customer experiences happen when humans and AI work together. Our agentic voice AI portfolio—AIR, AVA, and ACE—brings together automation, assistance, and insights across the entire conversation lifecycle. The result? More seamless, intelligent experiences for businesses everywhere.

With $2.5B+ in ARR and $250M invested in R&D annually, we’re building the future of AI-powered business communications.

We’re currently looking for Software Developer Engineer in Test (SDET)

**This role requires on-site presence at our office 4 days a week to support effective collaboration and teamwork.Main responsibilities:

• Collaborate with engineers, product managers, and stakeholders to understand requirements and contribute to test strategy

• Design, develop, and maintain automated tests for new and existing telephony features, following team standards and best practices

• Execute automated tests to validate functionality, performance, and reliability of telephony services

• Contribute to the organization and maintainability of the automated test codebase, ensuring clear structure and consistency

• Perform functional, regression, and integration testing to support high-quality releases

• Execute manual test cases and document results where automation is not applicable

• Identify, report, and track defects to resolution using defect tracking tools

• Verify bug fixes and perform retesting to ensure issues are resolved

• Analyze test results to identify defects, trends, and areas for improvement

• Create and maintain test documentation, including test plans, test cases, and test data

Requirements:

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field

• Experience as a manual QA and automation QA for 3 or more years

• Solid understanding of software development life cycle (SDLC) and software testing concepts and methodologies.

• Knowledge of telecommunication and network technologies, protocols, and standards (e.g., SIP, RTP, PSTN).

• Experience with defect tracking tools (JIRA) and test management tools.

• Experience with Python scripting language

• Experience of CI/CD processes and tools (Jenkins, CI/CD).

• Experience with API testing and automation tools

• Experience with SQL databases

• Strong analytical and problem-solving skills, with a keen attention to detail

• Fluency in English language

Will be a plus:

• Experience with Java, Bash, Docker, Wiresharе

• Experience with AI/ML-based features or applying AI in production systems is a strong plus

What we offer:

• Well-coordinated professional team.

• Cutting edge technologies, interesting and challenging tasks, dynamic project, great opportunities for self-realization, professional and career growth.

• Additional Health and Life Insurance Package.

• Employee Assistance Program.

• 25 vacation days.

• 102,26 EUR/200 BGN Digital Food Vouchers.

• 61,36 EUR/120 BGN Gross as part of the salary for Working Expenses Allowance.

About Ring Central

Ring Central is a global leader in agentic voice AI–powered business communications, delivering an integrated platform for business phone, SMS, contact center, workforce engagement management, video collaboration, and messaging. As the communications layer connecting businesses and customers, Ring Central is the front door of business communication and is in the advantageous position to apply AI at every phase of the conversation journey — before, during, and after each interaction. Our agentic AI portfolio includes autonomous voice-first AI agents that automate calls, assist in the moment, and analyze every interaction – enabling businesses to work smarter, respond faster, and connect more meaningfully with their customers.
Ring Central is an equal opportunity employer that truly values diversity. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.