Job Description

About Atos Group

Atos Group is a global leader in digital transformation with c. 63,000 employees and annual revenue of c. €8 billion, operating in 61 countries under two brands — Atos for services and Eviden for products. European number one in cybersecurity, cloud and high performance computing, Atos Group is committed to a secure and decarbonized future and provides tailored AI-powered, end-to-end solutions for all industries. Atos Group is the brand under which Atos SE (Societas Europaea) operates. Atos SE is listed on Euronext Paris.

The purpose of Atos Group is to help design the future of the information space. Its expertise and services support the development of knowledge, education and research in a multicultural approach and contribute to the development of scientific and technological excellence. Across the world, the Group enables its customers and employees, and members of societies at large to live, work and develop sustainably, in a safe and secure information space.

About Eviden

Eviden is the Atos Group brand for hardware and software products with c. € 1 billion in revenue, operating in 36 countries and comprising four business units: advanced computing, cybersecurity products, mission-critical systems and vision AI. As a next-generation technology leader, Eviden offers a unique combination of hardware and software technologies for businesses, public sector and defense organizations and research institutions, helping them to create value out of their data. Bringing together more than 4,500 world-class talents and holding more than 2,100 patents, Eviden provides a strong portfolio of innovative and eco-efficient solutions in AI, computing, security, data and applications.

We are looking for a Senior Software Engineer for our location in  Osijek to join our new team.

Mission 1: Design

• Design and develop security-critical communication server software based on microservice / containerized architectures
• Analyze and translate ETSI, 3GPP, and customer-specific requirements into robust software components
• Contribute to system architecture decisions with a focus on scalability, resilience, and security
• Collaborate with product management and cross-functional teams during the design phase

Mission 2: Development & Implementation

• Solve complex technical and implementation challenges in close collaboration with the development team
• Work hands-on with object-oriented programming languages (e.g. Go, C++, Java) and modern development tools
• Lead and support development activities across the software lifecycle, including coaching and mentoring team members
• Develop and maintain CI/CD pipelines and integrate DevOps practices

Mission 3: Integration & Quality

• Ensure software quality through testing, code reviews, and best practices
• Contribute to secure and high-availability system design (security protocols, encryption, scalability)
• Work with containerization and orchestration platforms such as Kubernetes, OpenShift, Docker
• Support integration with telecom infrastructure and network protocols (e.g. SIP, TCP/IP, HTTP, RTP)

Mission 4: Collaboration & Continuous Improvement

• Collaborate with international and cross-functional teams across all project phases
• Contribute to continuous improvement of development practices and system performance
• Support knowledge sharing, mentoring, and team development
• Stay up to date with emerging technologies, including AI-augmented development

Requirements

• Background in Computer Science, Telecommunications, or a related technical field
• Around 10+ years of experience in software development, ideally in high-availability or telecom environments
• Strong experience with programming languages such as Go, C++, or Java ]
• Experience with CI/CD pipelines, DevOps practices, and modern development tools
• Good understanding of microservices, container technologies (Docker, Kubernetes, OpenShift), and distributed systems
• Experience working with telecom systems, 4G/5G networks, and infrastructure environments
• Knowledge of network protocols (e.g. SIP, TCP/IP, HTTP, RTP, Diameter)
• Strong understanding of security topics (OAuth2, OpenID, IPSec, encryption, etc.)
• Experience working in Linux environments
• Familiarity with high-availability and large-scale system design principles
• Fluent Croatian and English language skills; experience working in international environments
• Strong problem-solving mindset and analytical thinking
• Team-oriented approach with mentoring capabilities
• Proactive, hands-on attitude and willingness to learn new technologies

Benefits:

• Competitive and market aligned compensations and benefits
• Additional and complementary health insurance
• Christmas bonus and gift for children
• Vacation allowance
• Transportation allowance
• Accolade bonus
• Referral bonus
• Jubilee award
• Flexible working hours at Atos or home office
• Multisport card
• Free parking on site
• Unlimited SIM card and business phone
• Days of annual leave above the legal minimum
• More favorable loans in some banks
• Professional and personal development through continuous education and certification
• Wellbeing days & After work gatherings

Important:

• For this position we are not able to offer any VISA sponsorship.
• Only EU citizens will be considered.
• Relocation to Croatia is mandatory.

#Eviden

Let’s grow together.