Backend Engineer – OTT Messaging & AI-Driven Platform

Infobip; Katowice; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Infobip benefits package

Job summary

Infobip in Katowice is seeking a mid-level Software Engineer to help deliver scalable, highly available backend services for OTT messaging. You will own features end to end, collaborate with Product and other engineering teams, and contribute to production reliability and observability.

Strong Java (or Kotlin) and Spring Boot experience is required, with Maven, Git, and automated tests. An AI-first mindset supports daily work.

Qualifications

• 3+ years building backend services (or equivalent depth)
• Strong Java (or Kotlin) and Spring Boot; comfortable with Maven, Git, and automated tests
• Shipped and operated something in production: logs, metrics, incidents
• Able to take a vaguely specified problem, design a solution, and deliver with quality
• Writes clear, testable code and seeks feedback from teammates
• Excellent English communication with engineers and product teams

Responsibilities

• Own features end to end: design, implementation, tests, rollout, and production follow-up
• Build and maintain Java/Spring Boot backend services for OTT messaging
• Work with partner APIs and webhooks, including upgrades and tight deadlines
• Participate in production support: investigate incidents and ship fixes
• Improve reliability, observability, and quality of systems you touch
• Review code, write tests, mentor juniors as you grow
• Use AI as part of daily workflow (code, tests, docs, investigation)
• Collaborate with Product and other Infobip engineering teams

Skills

Java

Spring Boot

Kotlin

Maven

Git

Automated tests

Tools

Docker

CI/CD

Kafka

OpenAPI

REST APIs

Job description

Infobip in Katowice is seeking a mid-level Software Engineer to help deliver scalable, highly available backend services for OTT messaging. You will own features end to end, collaborate with Product and other engineering teams, and contribute to production reliability and observability.

Strong Java (or Kotlin) and Spring Boot experience is required, with Maven, Git, and automated tests. An AI-first mindset supports daily work.