Mid Backend Engineer at Infobip in Zagreb, Zagreb, Croatia

Mid Backend Engineer Location: Zagreb (Croatia) Working at Infobip means being part of something truly global. With 75+ offices across six continents, we’re not just building technology — we’re shaping how more than 80% of the world connects and communicates. As employees, we take pride in contributing to the world’s largest and only full-stack cloud communication platform. But it’s not just what we do, it’s how we do it: with curiosity, passion, and a whole lot of collaboration. We operate with an AI-first mindset, embedding intelligent tools into our daily workflows to work smarter and more efficiently. Every role here benefits from and contributes to this approach. If you're looking for meaningful work and challenges that grow you in a culture where people show up with purpose, this is your opportunity. Let’s build what’s next, together. What this role is all about As a Mid Backend Engineer in this team, you will work on building and evolving compliance-focused platform services that enable global messaging at scale. The team develops internal and external tools, APIs, and backend services that handle campaign registration, validation, and vetting before any SMS or MMS traffic is sent to market, particularly in North America. You will collaborate closely with Product, have a direct influence on product design decisions, and work on technically and conceptually complex problems where compliance becomes an engineering challenge, not just a legal one. What you’ll do Design, build, and maintain backend services and APIs for compliance-related platform applications used internally and externally Develop and operate distributed microservices handling campaign registration, validation, and vetting workflows Work primarily with Java-based backend systems using Spring, MSSQL, Kafka, and event-driven architectures Collaborate closely with Product Managers to shape solutions and influence product and platform design Participate in an agile setup with two-week sprints, short daily standups, and a strong focus on minimizing unnecessary meetings Apply an AI-first mindset when approaching engineering problems Effectively leverage AI to improve code quality, testing processes, and technical documentation What makes you a strong fit 3+ years of solid experience as a backend engineer working with distributed systems and microservice architectures Strong understanding of object-oriented programming principles Experience with Java and Spring, or strong backend experience in another object-oriented language Hands-on experience with relational databases Familiarity with messaging systems and streaming platforms such as Kafka Ability to work independently on backend tasks while collaborating effectively within a team Comfortable working in a product-oriented environment with direct interaction with Product stakeholders Fluent in English, both spoken and written Nice-to-have qualifications Previous exposure to compliance-heavy domains, regulated systems, or platform engineering Experience contributing to or maintaining AI-assisted tooling or LLM-based systems Some experience with frontend technologies or API consumer-facing portals Interest in mentoring junior engineers or supporting internship programs Why you'll love it here• Financial rewards & recognition - A fair compensation aligned with your experience, industry, and market standards, performance-driven bonuses, regular reviews to support your growth and recognize your contributions, and a culture that values your impact. • Flexible work arrangements - We combine in-person collaboration with remote work and flexible working hours, because great ideas happen everywhere - and not always between 9 and 5. • ESOP (Employee Stock Ownership Plan) - As an Infobip employee, you’ll have the opportunity to share in our company’s success through stock options. • Work-life balance and Well-being  - We offer time off when you need it, special leave days for life’s big moments, and a flexible hybrid work model tailored to local regulations. • Career mobility - Your career is a journey. With internal mobility, upskilling, and mentorship, we help you shape your path. • Professional development - Learning never stops. Onboarding, mentorship, and training programs help you grow - no matter where you start. • International mobility - Ready to take your career global? Explore short and long-term opportunities in our Hubs worldwide. While some benefits may vary by location, our goal remains the same: to support your growth, well-being, and success - wherever you are.  Diversity drives connection Infobip is built on diverse backgrounds, perspectives, and talents. We’re proud to be an equal-opportunity employer and are committed to fostering an inclusive workplace. No matter your race, gender, age, background, or identity — if you have the passion and skills to thrive, there’s a place for you here. All qualified applicants will receive consideration for employment without regard to race, color, ancestry, religion, age, sex, sexual orientation, gender, gender identity, national origin, citizenship, disability, veteran status or any other part of one's identity. Read more about our hiring process. #LI-TF1