Senior Kotlin/Java Backend Engineer - AI & Scale

Allegro Ltd.; Kraków; Hybrid; PLN 210,000 - 289,000; Full time

Benefits offered by this job

MacBook Pro or Windows laptop

Fringe benefits via cafeteria plan

English classes

Training budget

Volunteer day

Social events

Job summary

Allegro Ltd. is seeking a senior backend engineer to design, build, and optimize high-throughput services in the Electronics domain. You will integrate AI features to automate workflows and ship scalable microservices using Kotlin, with Spring Boot as the core stack.

You will work in a hybrid model from Kraków, collaborating with a team that values high-quality code, performance, and autonomy. Knowledge of frontend is a plus, and you will interact in Polish and English.

Qualifications

• Commercial experience in Kotlin or Java is required.
• Strong background with Spring Boot and microservices.
• Experience with AI-enabled workflows is a plus.

Responsibilities

• Design, build, and optimize backend services.
• Integrate AI capabilities to classify data and generate content.
• Develop vertical product experiences in Electronics domain.

Skills

Kotlin

Java

Spring Boot

RESTful APIs

AI tooling

Polish & English (B2)

Distributed systems

Tools

Kubernetes

Docker

Job description

Allegro Ltd. is seeking a senior backend engineer to design, build, and optimize high-throughput services in the Electronics domain. You will integrate AI features to automate workflows and ship scalable microservices using Kotlin, with Spring Boot as the core stack.

You will work in a hybrid model from Kraków, collaborating with a team that values high-quality code, performance, and autonomy. Knowledge of frontend is a plus, and you will interact in Polish and English.