Backend Engineer – AI-Driven Ads Growth

Allegro; Warszawa; Hybrid; PLN 125,000 - 170,000; Full time

Benefits offered by this job

MacBook Pro

Cafeteria plan benefits

English classes

Volunteer day

Social events

Job summary

Allegro in Warsaw is looking for a backend engineer with strong Kotlin/Java skills to help power a real-time marketplace.

You will own features from design to deployment in a hybrid, 4/1 model, working with Kubernetes, Kafka, Spring and ML-driven ideas.

Join a team that values autonomy, experimentation with AI, and close collaboration with Data Science to deliver scalable ads and marketplace features.

Qualifications

• Solid backend skills in Kotlin or Java and a growth mindset.
• Interest in experimenting with AI and trying new tools and technologies.
• Desire to build new products and have impact on a developing project.
• Willingness to collaborate with Data Science teams to translate algorithms into user experiences.
• Openness to broader architecture and potential move towards full-stack or big data engineering.

Responsibilities

• Develop and own backend features in Kotlin/Java from design to deployment.
• Collaborate with Data Science teams to implement complex algorithms.
• Contribute to Allegro Tech with modern tooling and autonomy.
• Work in a hybrid model with flexible hours and remote days.

Skills

Kotlin

Java

Backend development

AI experimentation

Tools

Kubernetes

Docker

Consul

GitHub

GitHub Actions

Job description

Allegro in Warsaw is looking for a backend engineer with strong Kotlin/Java skills to help power a real-time marketplace.

You will own features from design to deployment in a hybrid, 4/1 model, working with Kubernetes, Kafka, Spring and ML-driven ideas.

Join a team that values autonomy, experimentation with AI, and close collaboration with Data Science to deliver scalable ads and marketplace features.