On behalf of **AdTech Client #1**, SD Solutions is looking for a talented **Full-Stack Developer.** *SD Solutions is a staffing company operating globally. Contact us to get more details about the benefits we offer.* **Responsibilities:** - You will be responsible for owning our end-to-end development process, from design to production, contributing to platform infrastructure and architectural decisions, and help driving best practices in system design, code quality and AI-assisted development. - You will design and implement scalable backend services in Java (Spring Boot) and NestJS (Node.js/TypeScript), build RESTful and event-driven APIs, and develop reliable systems supporting publishers management, bidding logic, reporting, and customer-facing dashboards. - You will build and maintain modern frontend applications using Angular (15+), ensuring seamless integration with backend services and consistent UX performance. - You will engage in research of core technologies, integrations with external APIs and third-party services, and provide effective solutions to production and scalability challenges. - You will write high-quality, testable code (unit, integration, E2E), improve observability (logs, metrics, tracing), and actively participate in design reviews and technical discussions. **Requirements:** - 4+ years of experience developing enterprise web applications and distributed systems in production - Experience designing and implementing scalable web system architectures - Solid understanding of REST APIs, async processing, and clean architecture principles - Experience monitoring, debugging, and supporting production systems - Experience with Java (Spring Boot) - Experience with Node.js (TypeScript, NestJS) – advantage - Experience with modern UI frameworks (Angular, Vue, React) – big advantage - Experience with relational and non-relational databases (MySQL, Vertica, Redis, Elasticsearch) - Highly motivated team player with strong interpersonal skills and a “can-do” attitude - Self-starter, able to work independently and multitask effectively - Passionate about learning new technologies - BSc in Computer Science or equivalent **About the company:** A large-scale advertising technology company building audience intelligence and campaign automation tools for brands, agencies, and publishers across multiple digital channels. The platform processes vast data volumes to enable programmatic decisions and measurable business outcomes at a global level. By applying for this position, you agree to the terms outlined in our Privacy Policy. Please take a moment to review our Privacy Policy https://sd-solutions.breezy.hr/privacy-notice, and make sure you understand its contents. If you have any questions or concerns regarding our Privacy Policy, please feel free to contact us.