Test Automation Engineer

Job Introduction

FREQUENTIS Solutions & Services (FSS)
as a member of the Austrian Group FREQUENTIS AG, is focused on software development, system engineering and delivery of safety-critical voice communication and information systems. Our solutions are developed and distributed in the following business segments:
Air Traffic Management & Defence
(civil and military air traffic control, aeronautical information management),
Public Safety
(police, fire and rescue services, emergency medical services) and
Public Transport & Maritime
(railway and urban transport solutions, vessel traffic management).

Frequentis portfolio of market-leading products is designed to
provide comprehensive solutions for the aviation industry
. From automation to tower systems, voice communication to traffic optimisation, information management to surveillance, networks to UTM and recording, we offer a broad range of solutions that cater to all ATM operational needs.

Your Role
As a
Test Automation Engineer
you will help shape the next generation of air–ground communications. Join an international technology leader and work with major aviation partners to turn an innovative proof of concept into reliable, product-quality software for ESA’s ground infrastructure. Solve complex networking challenges, validate new ideas through prototypes, and benefit from flexible working arrangements with a strong focus on work–life balance.

Working Model

• Hybrid working model with flexibility to work from home
• Regular onsite collaboration in our Bratislava office (typically once per week)

Key Tasks

• Define and implement the test approach for transforming the proof of concept into a dependable product
• Develop and maintain automated system, integration, regression, and end-to-end tests for network services
• Translate specifications and requirements into traceable test scenarios and acceptance criteria
• Design nominal, boundary, negative, concurrent, failure-recovery, restart, and performance scenarios
• Build and operate test environments using Linux, virtual machines, containers, simulators, and traffic-generation tools
• Analyse packets, logs, and system state to isolate faults and produce clear, actionable defect reports
• Integrate automated tests into CI/CD and collaborate with developers, system engineers, and international aviation partners.

Key Qualifications
Technical Skills & Competencies (Must Have)

• Professional experience automating tests for backends, APIs, distributed systems, or network services
• Practical scripting skills in Python, Bash, or a comparable language
• Solid hands-on networking knowledge, including IPv4/IPv6, TCP, UDP, routing, and packet analysis using tools such as Wireshark and tcpdump
• Sound understanding of system, integration, regression, and end-to-end testing
• Ability to derive traceable test scenarios, corner cases, and failure conditions from complex technical or protocol specifications
• Practical Linux experience, including package installation, virtual machines, networking, and troubleshooting
• Experience with Git and collaborative development workflows
• A systematic, inquisitive mindset and good technical communication skills

Special Skills & Abilities (Nice To Have)

• Experience with OCI containers, Docker or Podman
• Familiarity with traffic-generation and network-diagnostic tools such as iperf
• Experience testing gRPC, NETCONF, SNMP, SSH, LISP, or other network protocols and interfaces
• Experience with scenario-based or BDD/Gherkin test automation
• Performance, resilience, concurrency, failover, or recovery testing experience
• Software-development or unit-testing experience
• Experience with Jenkins or another CI/CD system
• Experience working in a Scrum team and using Jira or a comparable work-management tool
• Experience testing aviation, telecommunications or other mission-critical systems.

Employee requirements
Minimum achieved education

• secondary school with an A-Levels equivalent

Language Skills

• English - Upper intermediate (B2)

Personality Requirements And Skills

• Systematic, reliable and responsible working style
• Proactive problem-solving mindset and ownership of tasks
• Ability to analyse complex requirements and translate them into structured test scenarios
• Strong communication skills and ability to work effectively in an international team
• Curiosity and attention to detail when investigating and troubleshooting issues
• Proficiency in spoken and written English
• Willingness to travel occasionally

Our Values

Around 2,600 employees are committed to creating a safer world with their innovative strength and technology orientation. Our culture is based on a working environment characterized by fairness and trust, mutual respect and appreciation. As an international company, we value this diversity and recruit regardless of age, gender, origin, ethnicity, sexual orientation or religion. We value fair and good working conditions, an optimum work-life-balance and offer all our employees equal development opportunities. In doing so, we focus on long-term working relationships in order to keep the valuable know-how of our employees stable.

Benefits
We offer an international and exciting work environment with manifold opportunities to grow both personally and professionally. Happiness and commitment of our employees is a key contributor to our success and we therefore put strong emphasis on our team spirit and a healthy work-life-balance. We are located in a modern office building with good public transportation connections, close to the city center of Bratislava.

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