Middle Backend Developer (Java/Kotlin)

About this role

We are looking for a Middle Backend Developer (Java/Kotlin).
What We Offer: the opportunity to influence technical and architectural decisions; involvement in the full development lifecycle, from design to deployment; hands-on experience with Big Data technologies and distributed systems; technical mentorship and opportunities for professional growth.

About the Project
We develop a Big Data platform and tools focused on:
• Data Ingestion — collecting and delivering data from business systems to an analytical data warehouse..
• Data Maintenance — maintaining and optimizing data storage..
• Analytics Integration — integrating various analytics services and tools into the data platform.

Our Tech Stack
• Backend: Java, Python, Rust, Spring Boot.
• Data Streaming & CDC: Apache Kafka, Kafka Connect, Debezium.
• Data Processing & Storage: Apache Spark, Apache Iceberg, Trino, Ozone S3.
• Database: PostgreSQL.
• Infrastructure: Kubernetes.

Responsibilities
• Develop and maintain the system that collects data from business services and delivers it to the analytical data warehouse (Ozone).
• Develop the metadata and statistics service for warehouse tables, including the interface and table optimization.
• Integrate existing tools into a unified data platform for analysts and data engineers, with end-to-end access based on permissions.
• Support the team’s tools and partially contribute to other projects the team relies on.
• Take part in all stages of development, from design to deployment, with the ability to influence the tool.
• Work with complex multi-step integrations and high load.
Requirements
Technical Requirements
Must-have

• Java and/or Kotlin

• Spring Boot

• Apache Kafka

• Relational databases (PostgreSQL)
Nice-to-have

• Rust and/or Python

• Apache Spark

• S3-compatible object storage

• Experience with distributed systems and Big Data technologies
What We Expect

• A proactive mindset and willingness to take ownership of tasks.

• Interest in contributing to technical discussions, design decisions, and architecture.

• Willingness to learn new technologies, receive feedback, and grow with guidance from the Tech Lead.

Benefits

• Flexible schedules and the opportunity to work remotely.

• Ambitious and supportive team who love what they do, appreciate each other, and grow together.

• Internal programs for adaptation and training, development of soft skills, and leadership abilities.

• Partial compensation for participating in external training and conferences.

• Corporate English school: Group and individual lessons, speaking clubs with colleagues from all over the world.

• Corporate prices on hotels and travel services.

• MyTime Day Off - an extra non-working day without loss of compensation.

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