Software Engineer I

Quick Facts

• Role: Software Engineer I

• Focus: Backend, microservices, large-scale systems, and ML infrastructure for recommendations

• Team style: Agile, autonomous, “build it, run it” ownership

Description

Design, build, and optimize high-performance, high-availability systems handling thousands of requests per minute in a cloud-native environment. Work with Kotlin, Spring, Kafka, and Kubernetes, and help deliver end-to-end ML recommendation capabilities—offline processing (BigQuery, Apache Spark), high-speed retrieval (Vector Search databases), and integration with microservices. Join the Recommendation team and collaborate closely with Machine Learning to improve the customer experience.

Responsibilities

• Develop and operate microservices from design through deployment

• Build systems for high-scale real-time backend and distributed challenges

• Support end-to-end ML systems, including serving ML models and creating infrastructure for recommendations

Requirements

• Code in Kotlin, Java, or Python, and be eager to master Kotlin

• Take pride in code quality; participate in meaningful code reviews and engineering discussions

• Find effective solutions aligned with user requirements

• Be open to learning, continuous improvement, and developing soft skills

• Interest in ML engineering and serving ML models; experience/interest in large-scale offline processing with BigQuery or Apache Spark

• Incorporate AI coding assistants into daily work

• English at least B2

Benefits

• Hybrid work model (4/1) with flexible start times (7:00–10:00) and up to 30 days occasional remote work

• Annual bonus based on performance and company results

• Long-term incentive plan based on restricted stock units (Allegro.eu)

• Well-equipped offices and strong work tools (e.g., MacBook Pro or Dell, ergonomic setup)

• Cafeteria benefits (e.g., medical, sports, lunch, insurance, vouchers)

• Paid English classes related to the job, training budget, hackathons, and internal learning platform

• Additional paid day off for volunteering

• Social events and internal community activities