Strong Middle/Senior Full Stack Developer (Java+Angular)

Sigma Software is seeking a skilled Full Stack Developer to join an international project within the AdTech industry. You will contribute to the development of a large-scale advertising campaign management platform, focusing on building scalable enterprise solutions that automate and optimize digital advertising operations globally.

Key responsibilities

• Design, develop, and maintain scalable Full Stack solutions using Java, Spring, and Angular.
• Develop and support complex business logic related to advertising campaign management.
• Participate in architecture discussions and contribute to technical solution design.
• Build reliable, maintainable, and high-performance enterprise applications.
• Collaborate with developers, architects, QA engineers, and project managers to drive technical solutions.

Requirements

• 5+ years of commercial software development experience.
• Strong hands-on experience with Java, the Spring Framework, and Angular.
• Experience building scalable enterprise-level applications and working with AWS cloud services.
• Good understanding of software engineering principles, system design, and REST API integrations.
• Upper-Intermediate or higher level of English proficiency.

What we offer

• Opportunity to work on a performance-critical platform with complex business logic.
• Engagement in a professional, distributed team environment focused on quality and continuous improvement.
• Exposure to advanced media-processing functionality and large-scale advertising ecosystems.
• A culture that values proactive ownership and technical innovation.