Java Developer (E-commerce)

TL;DR

Java Developer (Java/Kotlin): Developing and maintaining core services for advertising campaign management with an accent on high availability, horizontal scalability, and data-intensive solutions. Focus on building budgeting and billing services, implementing event-driven architectures, and integrating distributed microservices.

Location: Remote (Poland)

Salary: 600 - 1000 PLN / day

Company

hirify.global is a Polish IT partner providing specialized software development teams for a market-leading Polish e-commerce platform.

What you will do

• Develop and maintain core services related to advertising campaign management and delivery.
• Design high-availability solutions with horizontal scalability to support millions of daily users.
• Implement budgeting and billing services for advertising activities.
• Collaborate with Product Owners and non-technical stakeholders to refine requirements.
• Work with distributed backend systems, microservices, and data-intensive solutions.

Requirements

• Commercial experience in Java and/or Kotlin development.
• Proficiency in backend development using Spring Boot.
• Knowledge of microservices architecture and distributed systems concepts.
• Experience with relational databases (PostgreSQL) and basic knowledge of NoSQL (MongoDB).
• Understanding of event-driven systems and asynchronous communication (Kafka).
• Experience with REST APIs and service integration.

Culture & Benefits

• Real impact on system architecture and the ability to design scalable solutions.
• Opportunity to work on a massive scale platform with over 20 million users.
• Access to a proprietary professional development programme.
• Collaboration within a mature, cross-functional engineering environment.
• Participation in a company that actively supports charitable and educational initiatives.