AdTech Client #1 | Senior Full-Stack Developer (Java)

Location: Warsaw, Poland, Serbia, or Romania

Company

Staffing support is provided for a large-scale advertising technology company building audience intelligence and campaign automation tools for brands, agencies, and publishers across multiple digital channels.

What you will do

• Influence architecture decisions and evaluate the adoption of new technologies.
• Own the end-to-end development process from design through production.
• Design and develop microservices-based products and enhance platform infrastructure.
• Lead and mentor developers through complex projects affecting core business operations.
• Research core technologies and integrate external APIs and third-party services.
• Provide solutions to ongoing technical issues.

Requirements

• 7+ years of experience developing complex enterprise web applications and distributed systems in production.
• Deep knowledge of Java and Spring Boot.
• Experience designing and implementing web systems architecture.
• Experience with relational and non-relational databases, including MySQL, Elasticsearch, Redis, and Vertica.
• Experience with modern UI frameworks such as Angular, Vue, or React.
• Leadership skills, strong communication, independent working ability, and a BSc in Computer Science or equivalent.

Culture & Benefits

• Full-time position within an engineering team.
• Opportunity to work on advertising technology processing large data volumes for programmatic decisions.
• Exposure to products serving brands, agencies, and publishers across multiple digital channels.
• Benefits are provided through the staffing company; further details are available during the hiring process.