Senior Test Automation Engineer

Summary

Join ReversingLabs, a global leader in software supply chain security, and become our new Senior Test Automation Engineer. You will be instrumental in designing and implementing automated test solutions, ensuring the reliability and performance of our products. This role demands expertise in Python, Selenium, Playwright, and Pytest, and involves collaboration with developers and product managers in an Agile environment. You will build and maintain automated test suites, develop various tests (end-to-end, functional, regression, integration), integrate tests into CI/CD pipelines, and perform manual testing as needed. The ideal candidate possesses 5+ years of experience in software quality engineering with a focus on test automation and a strong understanding of software testing principles. This position offers a competitive compensation package, including benefits and flexible work arrangements.

Requirements

• 5+ years of experience in software quality engineering, with a focus on test automation
• Proficient in Python for test automation
• Solid experience with Selenium and Playwright for web UI testing
• Strong understanding of software testing principles, methodologies, and best practices
• Experience working with REST APIs and validating them using tools like Postman, REST-assured, or Python requests libraries
• Familiarity with CI/CD tools (e.g. Jenkins, GitHub Actions, GitLab CI) and integrating test automation
• Excellent debugging and troubleshooting skills across the test stack
• Effective communicator with the ability to work in a cross-functional, agile team environment

Responsibilities

• Design, build, and maintain robust automated test suites using Selenium, Playwright, and Pytest in Python
• Develop end-to-end, functional, regression, and integration tests across web and backend systems
• Collaborate with developers and QA peers to define test strategies and identify automation opportunities
• Integrate automated tests into CI/CD pipelines and ensure fast, reliable feedback on code changes
• Own the quality of deliverables through thoughtful test design, execution, and defect analysis
• Perform manual testing when needed to support exploratory efforts and validate edge cases
• Actively participate in Agile ceremonies and contribute to a culture of continuous improvement

Preferred Qualifications

• Experience of Pytest framework
• Experience in Linux environments, scripting, and CLI-based testing
• Familiarity with containerization tools (e.g. Docker, Kubernetes) for managing test environments
• Exposure to performance or load testing tools (e.g. JMeter, Locust)
• Background in cybersecurity or testing security-focused applications is a plus

Benefits

• On-site, hybrid, and remote work as options (paid accommodation and transportation to Zagreb during onboarding for remote employees), and flexible working hours
• Generous compensation and a bonus system based on annual performance
• A hefty personal education budget and the possibility to attend leading conferences and seminars in the field
• Permanent contract with a fast-growing global company with Fortune 500 and government agencies as clients
• Opportunity to work on innovative solutions in malware analysis & software supply chain security, crafted in our very own Croatian R&D center
• Great career advancement opportunities – clear goals and internal promotions
• Company library and the possibility of ordering books of choice via Amazon
• Employee referral bonus program: EUR 1,060 net for junior positions, EUR 2,123 net for mid to senior positions, and EUR 2,654 net for principal/managerial positions
• Multisport card, annual health checkup, newborn child allowance, rent-cost, and 3rd pillar pension benefits
• Wellness Weekends – quarterly, company-wide three-day weekend, starting with a company-paid Friday off for all employees
• Fully covered car garage in Radnička cesta for all employees