AdTech Client #1 | Senior Full Stack Developer

SD Solutions

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Warsaw, PL / Serbia / Romania Until 9/21/2026 6+ years exp First posted July 23, 2026 Last posted July 23, 2026
Job description

On behalf of AdTech Client #1, SD Solutions is looking for a talented Senior Full Stack Developer. Discovery is a Big Data / AI platform that helps the world’s largest brands understand what matters to their audiences — combining web, video, and social content with TV and commercial viewership data.

SD Solutions is a staffing company operating globally. Contact us to get more details about the benefits we offer.

Responsibilities:

  • Plan, implement, and take full ownership of core features across Discovery’s backend services (audience targeting, keyword-association search, and the core management API), owning the entire development cycle.
  • Collaborate cross-functionally with Product, TSE, and DevOps on design and architecture decisions.
  • Work on the audience-activation layer that bridges Discovery’s audience data to downstream targeting systems, including TV, streaming, and commercial viewership signals.
  • Participate in refactoring system components and modernizing the stack to improve performance and stability.
  • Lead and mentor other developers, providing guidance on complex, cross-service projects.

        Requirements:

        • 6+ years of experience in software development.
        • Experience in designing and implementing architecture for web systems.
        • At least 3 years of backend development experience with one or more of the following languages: Java, Python, Node.js, etc.
        • Experience in developing web applications and RESTful APIs.
        • Proficiency in HTML, CSS, and JavaScript.
        • Experience with modern UI frameworks (ReactJS, Vue, Angular).
        • Experience working with both relational and non-relational databases.
        • Familiarity with a Linux environment.
        • A team player with a self-motivated mindset, ready to take on challenges and drive projects to successful outcomes.
        • Excellent communication skills with fluency in spoken and written English.

          Preferred Qualifications:

          • BSc in Computer Science or equivalent.
          • Experience with React

              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.

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              About this role

              Summary

              Develop and own backend features, collaborate on architecture, mentor developers, modernize stack.

              Job title

              Senior Full Stack Developer

              Experience level

              6+ years

              Minimum experience

              6+ years exp

              Industry

              advertising technology

              Location requirements

              Warsaw, Serbia, Romania; remote work not specified

              Salary

              Not specified

              Management role

              No

              Skills & keywords

              Required skills

              JavaPythonNode.jsweb applicationsRESTful APIsHTMLCSSJavaScriptReactJSVueAngularrelational databasesnon-relational databasesLinuxcommunication

              Preferred skills

              React

              Specializations

              full stackbackendweb systemsAPIAI
              Locations

              Structured locations inferred from the posting.

              Warsaw, Poland

              Work arrangement unknown City

              Straža, Serbia

              Work arrangement unknown City

              50055 Romanina, Metropolitan City of Florence, Italy

              Work arrangement unknown City