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Mid Backend Engineer

Infobip
Zagreb (Croatia) Posted Oct 21, 2026
Full-timeHybrid

About this role

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 Software Engineer in our Telco base, you will build and evolve products for telecom operators. These products let operators offer their business customers (brands) new network functionalities. Our services connect directly to operator networks and process large volumes of data in real time, with high throughput as a core requirement. You will work in a team of 4-5 engineers on Scrum-based delivery and 3-week sprints. Your first six months will focus on onboarding to our services, processes and the telco domain - including new emerging products.

What you'll do

  • Design, develop, maintain, monitor, and troubleshoot backend services for telecom operator products

  • Build high-throughput systems that process large volumes of messaging traffic through operator networks

  • Work on new products in their early stages, such as an entitlement service for SIM-based authentication

  • Collaborate with Google and Apple and follow global standards when building network functionalities for operators

  • Work with relational databases to store and process large amounts of data

  • Collaborate with engineers, product managers, and stakeholders to deliver reliable technical solutions

  • Use AI tools with understanding, choosing the right model for the task

  • What makes you a strong fit

  • At least 3+ years of professional experience in backend or full-stack software engineering roles

  • Solid understanding and practical application of object-oriented programming (OOP) concepts, regardless of programming language or framework

  • Experience building and maintaining distributed backend systems in production environments

  • Experience working with relational databases and data-intensive applications, such as Postgres or MSSQL

  • Comfortable working in an agile Scrum environment and collaborating with your team, stakeholders, and product managers

  • Proactive and ownership-driven approach to problem solving

  • Hands-on experience working with AI tools such as Claude or Codex, and an understanding of what different models are best used for

  • Fluent in English, both spoken and written

  • Nice-to-have qualifications

  • Experience with Java and Spring Boot

  • Experience and understanding of frontend

  • 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.

  • Please be aware that Infobip processes job applications only through our official platform Workday. Applications submitted via other third-party platforms are not reviewed or processed by Infobip.

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