Senior QA Engineer, Message SquadVerified as a real position

Who we’re looking for

• Minimum 6 years of experience, among which at least 3 recent years as a test automation engineer using Java / Kotlin / Groovy / Scala.
• Strong coding skills in a JVM language (ideally Kotlin or Java), with the ability to read and understand production code, review merge requests, and write clean, maintainable automated tests.
• Strong system-level and architectural thinking – you understand how services interact, how data flows through the system, and you use this understanding to design an effective test strategy.
• Hands-on experience building test suites across the testing pyramid (unit, component/service, API, contract, integration, and UI/e2e), and a clear opinion on which level is appropriate for each type of scenario.
• A mindset opposite to “cover everything with system-level e2e tests”: you prefer fast, reliable checks close to the code, and use e2e tests sparingly for end-to-end risk and critical flows.
• Experience working with CI/CD pipelines (ideally GitLab CI), test reporting, and quality gates.
• At least 1 year of experience with Selenium.
• Experience with UI, API testing, database testing.
• Critical thinking and a “bug hunter” attitude: you actively look for edge cases, failure modes, and real user behavior, beyond the happy path.
• High curiosity and willingness to dive deep into how the product and its ecosystem work (infrastructure, messaging, integrations, deployment pipeline)
• Strong autonomy and leadership potential.
• Excellent communication skills, proactivity, self-learning.

What you’ll do

• Co-design test strategies with the team for new features and refactorings.
• Implement and maintain automated tests in Kotlin at multiple levels.
• Challenge designs and technical solutions from a risk and testability perspective.
• Continuously improve our pipelines, tooling, and test reliability.

About the position

Diabolocom builds AI-first, cloud-native contact center infrastructure designed for high availability, low latency, and global scale. As both a software provider and a telecom operator, we combine a fully owned carrier-grade voice backbone with a programmable CCaaS platform that supports real-time, high-volume communications across 60+ countries. Our architecture integrates proprietary AI models purpose-built for customer interactions and covers data enrichment, intent detection, call summarization, transcription, quality scoring, workflow automation and more. These services run on a modular, service-oriented stack accessible through APIs and engineered for multi-language, multi-region deployments. We operate a distributed infrastructure optimized for deterministic performance, observability, and resilience, supported by deep CRM integrations, intelligent routing engines, and a high-throughput outbound dialer that enables sub-second decisioning. A dedicated Diabolocom Research team keeps us at the forefront of technological innovation, designing new proprietary systems—from advanced AI pipelines to telecom optimization—that help our clients gain a competitive advantage in the market. With more than 20 years of telecom and software engineering experience, Diabolocom offers engineers the opportunity to build and scale enterprise-grade systems that blend AI, cloud infrastructure, and mission-critical communications. As part of our exponential growth, we are strengthening our internal engineering team and opening a Senior QA Engineer position in our Message Squad. About the Message Squad Message Squad develops and enhances services that enable clients to communicate seamlessly across various text-based channels. Originally focused on email, we have expanded to a broader solution that integrates multiple messaging platforms (voicemail, SMS, social network).

Benefits

• A collaborative and innovative team environment.
• The opportunity to work on cutting-edge distributed communication systems.
• Real ownership on quality for a core domain of our platform – your decisions on test strategy and automation will significantly influence how safely and quickly we ship
• Career growth opportunities within a fast-growing global company.
• Flexible work arrangements and remote work options.
• A supportive team that values innovation and knowledge-sharing.