Junior Testing Engineer I Networking Solutions

We are looking for an ambitious Junior Testing Engineer to join our growing R&D team in Kaunas to help us grow our global presence in IoT sector by quickly and effectively responding to changing market needs and offers reliable, safe and easy-to-use solutions for such areas as Industry 4.0, Smart City, and Green Energy.

We are an open-minded, curious, and innovation-driven company and are ready to offer the best environment for creative and ambitious professionals who are eager to contribute to the development and success of Teltonika Networks. If you are curious, creative, analytical and are willing to work in a rapidly changing environment then we are on the same way!

In this role, you will:

• Test new hardware prototypes against functional and design requirements.
• Execute software and firmware testing according to defined test cases and test plans.
• Flash, configure, and validate firmware (OpenWrt-based) on prototype devices.
• Build and test network topologies to validate device behaviour in realistic scenarios.
• Test communication protocols including MQTT, MODBUS, SNMP, and others.
• Investigate failures to understand their root cause, helping narrow down whether an issue is hardware, firmware, or configuration related.
• Log, document, and track defects with clear reproduction steps and supporting evidence (logs, captures).
• Write test reports and communicate findings, and possible causes, to the R&D/dev team.

What we expect of you:

• Higher or non-university higher education in engineering (students welcome to apply).
• Knowledge of computer networks - OSI/TCP-IP model, routing, switching, VLANs, firewalls.
• Knowledge of Linux-based systems - command line, SSH, basic scripting (Phyton, Bash), log analysis (dmesg, logread).
• A problem-solving mindset - curious and persistent enough to dig into an issue before escalating it.
• Good understanding of English.
• Familiar with hardware and OS principles.
• Basic understanding of servers, programming, and telecommunications systems.

Nice to haves:

• Ability to read schematics/datasheets for hardware-level testing.
• Comfortable with lab tools such as Wireshark, multimeter, power supply, and network traffic generators.
• Familiarity with OpenWrt.
• Basic scripting ability (Python or shell) for repetitive test tasks.
• Knowledge of embedded systems or IoT devices.
• Exposure to bug tracking tools (Jira, etc.) and Git.

What we offer:

• Great opportunities to grow in a strong and rapidly expanding company.
• Interesting and ambitious projects of industrial networking devices.
• Place where curiosity is key: here, we share knowledge and learn in training courses, conferences or business trips.
• Dynamic, challenging work environment and cooperation-based internal culture.
• Care about your emotional and physical well-being by offering flexible work schedules and health insurance.
• Company-paid sports activities (basketball, football, volleyball, yoga) and other sports events.
• Celebrating achievements and having fun together in team building, summer festivals, and other important occasions.
• Opportunity for solid bonuses when participating in the recommendation program.
• We delight with birthday gifts and rewards on work anniversaries.
• Lunch snacks together at the dinner or lunch table.

Salary

We appreciate everyone's efforts and experiences, so we offer an attractive salary matching your skillset and field expertise. The salary for this position ranges from 12 Eur/h up to 16 Eur/h (~2004 Eur - 2672 Eur) pre-tax, depending on your experience and expertise.

*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 Ieva Chrapačaitė, +370 66030194, email ieva.chrapacaite@teltonika.lt