Senior Software 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).

We are looking for an experienced Technical Lead to strengthen our growing product team and help scale a high-demand solution evolving from an incubator initiative into a mature product. You will act as the technical backbone of a cross-functional, self-organizing team working on safety-critical communication systems, shaping the technical direction and enabling the team to deliver high-quality solutions.

Join an international technology leader and contribute to building reliable, scalable systems while enjoying flexible working conditions and a strong work-life balance.

Working Model

• Fully remote working model
• Occasional onsite presence in Bratislava or Vienna, depending on project and team requirements

Key Tasks

Your Main Responsibilities

• Shape the technical direction of your team’s services, balancing long-term architecture with delivery needs
• Act as the technical backbone of a cross-functional team working on safety-critical systems
• Make key architectural decisions and evaluate trade-offs (e.g. consistency vs. availability, simplicity vs. abstraction)
• Review code and designs to ensure high quality and prevent structural issues
• Mentor and guide engineers, supporting their growth and decision-making
• Own your domain end-to-end while staying close to implementation details
• Ensure alignment with other teams in a distributed system environment
• Drive quality practices (testing, static analysis, observability, CI/CD)
• Contribute hands-on by implementing critical components in modern C++
• Translate business requirements into clear technical solutions in an agile setup

Key Qualifications Technical Skills & Competencies

• Deep expertise in modern C++ (C++17, C++23 and beyond), including advanced features, template metaprogramming, and multiple paradigms (OOP, generic, functional)
• Strong experience in system architecture and design of distributed systems, microservices, and event-driven solutions
• Ability to define service boundaries, data ownership, and communication contracts
• Solid understanding of distributed systems challenges (consistency, failure modes, idempotency, etc.)
• Experience with asynchronous programming, real-time communication, and protocol design
• Knowledge of API design and schema evolution (e.g. JSON Schema, versioning)
• Experience with relational and embedded databases (PostgreSQL, MariaDB/MySQL, SQLite)
• Strong background in build systems and tooling (CMake, CI/CD pipelines, Jenkins or similar)
• Experience with containerization (Docker, Podman/Buildah) and large-scale codebase management
• Expertise in testing (e.g. Google Test), static analysis, and maintaining high code quality
• Familiarity with observability and tracing tools (e.g. OpenTelemetry)
• Experience working in agile environments and aligning across teams

Requirements For The Employee Candidates with education suit the position

• Secondary with school-leaving examination
• University education (Bachelor's degree)
• University education (Master's degree)

Educational Specialization: Information Technology, Telecommunications

Language skills: English - Advanced (C1)

Personality Requirements And Skills

• Strong technical leadership and ability to influence without formal authority
• Pragmatic mindset with the ability to balance ideal vs. practical solutions
• Excellent problem-solving and decision-making skills, even under uncertainty
• Strong communication skills across technical and non-technical stakeholders
• Mentoring mindset and ability to grow others in the team
• High commitment to quality and security in safety-critical environments
• Constructive approach to feedback, code reviews, and collaboration
• Ability to resolve conflicts and build consensus
• Self-organized and comfortable in cross-functional teams
• Team-oriented mindset with focus on overall impact

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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