TESTING ENGINEER (MID) • TELEMATICS

We are looking for a Testing Engineer (MID) to join our Quality Assurance team in Vilnius, focusing on Firmware/Hardware testing and Manual test automation. In this role, you will be responsible for validating embedded firmware, verifying hardware functionality, and ensuring that our devices meet the highest standards of reliability, performance, and compliance.

Teltonika’s telematics business unit develops and produces easy-to-use GPS tracking devices for effective fleet management across logistics, agriculture, car sharing, construction, and more. We use the latest technologies to set new standards for the telematics industry.

In this role, you will:

• Plan, design, and execute test cases for firmware, hardware, and software validation.
• Perform regression, functional, exploratory, and stress testing of embedded devices with and without technical documentation.
• Test and validate communication interfaces such as UART, CAN, I²C, SPI, RS232/RS485, 1-Wire, BLE, LTE, GNSS.
• Validate power management, sensor functionality, and I/O performance on hardware boards.
• Use lab equipment (oscilloscope, multimeter, logic analyzer, power analyzer) for debugging.
• Recreate real-world operating scenarios in a controlled environment using GNSS, thermal, humidity, vibration, and network simulation equipment.
• Perform field tests to verify that the device operates as expected in real-world scenarios (GNSS quality, track accuracy in different environments, forested roads, city, highway).
• Collaborate closely with development teams (HW/FW/SW) to reproduce, analyze, and verify issues.
• Track defects and provide detailed reports using Jira.
• Improve our testing methodologies and contribute to maintaining test documentation in systems such as Zephyr.
• Develop and implement automated tests for firmware and applications to ensure continuous quality and efficiency.

What we expect of you:

• 2+ years of experience in QA testing for embedded systems, hardware, firmware or software.
• Strong understanding of QA methodologies, test planning, and defect tracking.
• Hands-on experience with test tools and lab equipment (oscilloscope, multimeter, power supply).
• Good knowledge of embedded communication interfaces/ protocols (UART, SPI, I²C, BLE, LTE).
• Ability to analyze logs and troubleshoot firmware/hardware integration issues.
• Familiarity with Agile/Scrum development processes.
• Experience with test case management tools (TestRail, Zephyr Scale, XRay).
• Experience in test automation development and execution.
• Strong problem-solving skills and attention to detail.
• Experience in writing clear, structured, and comprehensive test plans and test cases.
• Proficiency in English (spoken and written).

Ideally, you also have:

• Knowledge of telecommunication protocols and technologies such as 2G/3G/GNSS, RS232/485, and CAN-based vehicle interfaces/ protocols (e.g., FMS, Tacho)
• Programming knowledge and understanding of electronics.
• Driving license (Category B).
• Good organizational skills, with the ability to manage multiple test executions and deliverables simultaneously.
• Any other relevant experience that you think makes you a great fit!

What we offer:

• Professional Growth: Great opportunities to grow your career in a strong and rapidly expanding company.
• Impactful Work: Work on interesting and ambitious projects with industrial GPS tracking devices that are used globally.
• Dynamic Culture: A challenging and dynamic work environment with a strong internal culture of cooperation.
• Health and Wellness: We care about your well-being with flexible work schedules, comprehensive health insurance, and company-sponsored sports activities.
• Team Celebrations: Celebrate achievements and have fun together at team-building events, summer festivals, and other important occasions.
• Referral Program: Bonuses for recommending new team members.
• Bonus system: Based on quarterly or annual company results and individual performance.
• Fun Perks: We celebrate important milestones with birthday gifts and work anniversary rewards. Plus, we have weekly fruits and snacks!

Salary

We offer a competitive salary that matches your skills and experience. The salary for this position is 15 Eur/h - 20 Eur/h pre-tax (~2500 Eur/month - 3300 Eur/month), with the opportunity to earn additional bonuses.

*In an employment agreement, we specify and define a fixed (tariff) hourly salary rate before taxes

If you have questions, do not hesitate to contact our recruitment colleague Karolina Zigmantaitė, +370 650 78009, email: karolina.zigmantaite@teltonika.lt

Teltonika aspires to become one of the global leaders in providing unique IoT solutions that contribute to making people’s lives easier. Since 1998, we have gained considerable experience and competence in electronics development and production. Today, our areas of expertise include telematics, networking, telemedicine, EV charging, and electronics manufacturing. While proactively searching for new ideas and ways to create more value for our clients, we also hope to create a better future for our employees and the communities we operate in. Our organisational culture is based on mutual trust and respect as well as creating synergy with our employees and clients.