Location: Remote
Contract Type: B2B (payment to individual entrepreneur account)
Salary: Gross salary – to be specified
Holidays: 10 public holidays per year (vacation and sick days are unpaid)
English Level: C1 or higher

About the Role

We are looking for a Senior Java Engineer with 6+ years of experience, a deep understanding of algorithms, data structures, and system design. This role is for someone who thrives on solving complex technical problems and can think beyond writing code — a true engineer, not just a developer.

You will join a team building a recommendation engine for a data-intensive product. Ideal candidates are passionate about working with data and have experience designing and building scalable backend systems.

Responsibilities

• Design and develop scalable backend components using Java and the Spring ecosystem

• Work on core logic powering a recommendation engine

• Collaborate with data teams to integrate algorithmic and data-driven features

• Participate in architectural discussions and code reviews

• Write clean, efficient, and well-tested code

• Contribute to system optimization and performance improvements

Requirements

• 6+ years of professional experience with Java and Spring Framework

• Strong background in algorithms, data structures, and software architecture

• Experience working with data-heavy applications or recommendation systems

• Ability to work independently in a fully remote, async environment

• Excellent communication skills and English proficiency (C1 or higher)

• Registered as an individual entrepreneur or open to B2B engagement

Nice to Have

• Familiarity with machine learning, data pipelines, or ranking algorithms

• Experience with tools like Apache Kafka, Elasticsearch, Redis

• Degree in Computer Science, Applied Mathematics, or similar field