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Junior Software Engineer

Budapest, Hungary💼 Full-time🗓 2026-06-02 → 2026-07-31

Core

Develop, enhance, and maintain highly scalable real-time big data platforms and infrastructure for a global advertising recommendation engine.

Role type

Junior Backend Engineer

Builds

High-scale systems and tools for processing over 40TB of daily data to power a global recommendation engine.

Domain

Advertising technology / Big Data / Real-time systems

Deliverable

production ML models | infrastructure

Required skills

Java (or equivalent OOP language), Object-Oriented Programming, Design Patterns, SQL, NoSQL (MySQL, Vertica, Cassandra), Agile/Scrum, AI tools and concepts

Preferred skills

Spring, Kafka, JavaScript, React

Technologies

Java, Spring, Kafka, MySQL, Vertica, Cassandra, JavaScript, React

Responsibilities

Design and develop systems to manage advertising budgets and optimize performance; Build scalable solutions to process and analyze vast amounts of data; Work on large-scale high-throughput recommendations systems; Utilize real-time big data operations; Have end-to-end ownership of product design, build, ship, measure, and maintenance; Collaborate with engineers, data scientists, and product managers.

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