Full-stack Engineer

• Design, develop, and maintain backend services and applications using Java and the Spring ecosystem
• Build and evolve scalable, distributed systems running in production environments
• Take ownership of features end to end, from design and implementation to testing, deployment, and production support
• Collaborate closely with product managers, designers, and other engineers to shape technical solutions
• Contribute to system design, architecture discussions, and technical decision-making
• Write clean, testable, and maintainable code, and actively participate in code reviews
• Work in agile setups, contributing to planning, delivery, and continuous improvement
• Apply an AI-first mindset by leveraging AI tools to improve development efficiency, code quality, testing, and documentation
• Depending on the team, contribute to full-stack solutions or frontend development using TypeScript and React

Mid Software Engineer

Backend Engineer

• You will write well-designed, testable, and maintainable code. Not just code that works, but code your team can build on.
• You will take ownership of your tasks end-to-end: design, implementation, testing, and code review participation.
• You will develop a solid understanding of the systems your team operates within, including their dependencies, failure modes, and trade-offs.
• You will contribute to technical discussions with grounded opinions backed by your own experience and reasoning.
• You will proactively identify problems, ask the right questions, and push solutions forward without waiting to be told what to do next.
• You will share knowledge within the team and help raise the bar through code reviews and day-to-day collaboration.

Junior Software Engineer, Java

Software Engineer

• High willingness to travel internationally: more than 50 % in a calendar year
• Commissioning of software programs on-site at the customer´s site
• Assisting in the development and implementation of software according to defined standards
• Assisting in the creation of the system specifications
• Assisting in the work preparation
• Software development
• Installation part – electrical installations

PLC Programmer

• Develop, maintain, monitor and troubleshoot your team services.
• Have full ownership of the code you produce.
• Write well-designed, testable and scalable code by clean code principles.
• Have a general overview and understanding of the interactions and dependencies in the entire system.
• Grow towards full-stack development, and for us, this means working primarily on backend development, while also expanding your knowledge in working with databases, system design, alerting and monitoring tools, and frontend development.
• Work within agile framework (Scrum, LESS, unfix) and have a dedicated Product Manager.
• Participate with your team in agile practices such as sprint planning and retrospectives.
• Expand and improve your knowledge both internally and externally and be a part of the engineering community.

Mid/Senior Software Engineer

• Design, build, and maintain complex backend services primarily using Java and the JVM ecosystem.
• Work on distributed, multithreaded systems that support automation, orchestration, and 2-way communication platforms such as AgentOS.
• Contribute to feature development and unification across multiple SaaS products, including Answers and Moments and AI Agents.
• Contribute to frontend development using React and TypeScript.
• Collaborate closely within a small, cross-functional initiative team, participating in plannings, reviews, and retrospectives.
• Write and maintain unit and integration tests to ensure reliability, scalability, and long-term maintainability of the systems.
• Apply an AI-first mindset, including exploring and integrating AI or LLM-based capabilities into product features where relevant.

Senior Full-Stack Engineer

• Develop, maintain, monitor, and troubleshoot your team services on Infobip’s platform.
• Have full ownership of the code you produce.
• Write well designed, testable, and scalable code by clean code principles.
• Have a general overview and understanding of the interactions and dependencies in the entire system.
• Grow towards full stack development and for us, this means working primarily on backend development but also expanding your knowledge on frontend development, system design and alerting and monitoring tools.
• Work within the agile framework (Scrum, LeSS) in close collaboration with Product Management.
• Participate with your team in agile practices such as sprint planning and retrospectives.
• Expand and improve your knowledge and be a part of the engineering community.

AI Software Engineer

• 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
• 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
• 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)
• 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.

Senior Software Engineer – Critical Communication Systems

• 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 component owners and cross-functional teams during the design phase
• 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
• Develop and maintain CI/CD pipelines and integrate DevOps practices
• Ensure software quality through testing, code reviews, and use of testing frameworks/tools
• Contribute to secure and high-availability system design (security protocols, encryption, network resilience)
• Work with containerization and orchestration platforms such as Kubernetes, OpenShift, Docker
• Support integration with network infrastructure and protocols (e.g. SIP, TCP/IP, HTTP, RTP)
• Collaborate with international and cross-functional teams across all project phases
• Contribute to continuous improvement of development practices and system performance
• Support knowledge sharing and team problem-solving.

Software Engineer – Critical Communication Systems

• Development and maintenance of software solutions supporting our Human Resources web application
• Work on large-scale, long-term projects within the SD Worx Croatia business environment
• Design, development, and testing of new features and future versions of HRnet
• Opportunity to propose and implement new technologies and improvements

.NET Engineer

• Lead and mentor a team of mid/senior backend engineers (4–5), including 1:1s, feedback, and performance management
• Translate product and business goals into clear technical roadmaps, sprint plans, and backend priorities
• Own the backend architecture and technical vision for mobile-first, consumer-facing apps used by tens of thousands of daily active users
• Drive and oversee implementation of new features for our mobile apps, working closely with iOS/Android, Product, Data, DevOps and Trust & Safety teams
• Take key architectural decisions around scalability, performance, reliability, data flows, and infrastructure on AWS
• Modernise and improve a large, Ruby on Rails codebase (including version upgrades and refactoring legacy areas) while keeping systems stable in production
• Identify and resolve performance bottlenecks, improve API speed and reliability, and design effective caching and database strategies
• Establish and continuously improve engineering processes, coding standards, code review practices, and deployment/CI pipelines
• Create and maintain clear technical documentation and design specs for backend systems and major initiatives
• Handle prioritisation and trade-offs in a fast-moving environment with changing quarterly priorities
• Be hands-on with coding and code reviews, especially for complex or high-impact areas, and step in during critical production incidents

Lead Backend Engineer, Ruby On Rails

• Participate at the start of the project by accompanying and critically reviewing the Battery Management System (BMS) software development provided by the supplier
• Gain deep insight into software processes, including specification, coding, testing, and verification
• Contribute to improving software quality and ensuring an adequate level of validation
• In the long term, develop own software solutions or modify existing code
• Independently test and validate developed or adapted solutions

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