Senior Full Stack Engineer (.NET / TypeScript)

About us: Valantic BG is a multidisciplinary digital competency center that builds extensive e-commerce expertise and a track record of successfully delivered projects. We provide specialized services at the intersection of e-commerce, data, and technology. Our portfolio includes Consulting, Customer Acquisition & Retention, Commerce Implementation, CX Monitoring, and 24/7 Support Services. We are committed to helping global enterprise clients achieve sustainable digital growth, while maintaining strong client relationships and delivering meaningful results. valantic is a leading provider of digital transformation services and one of the most dynamic companies in the fields of digital solutions, consulting, and software. The company is trusted by numerous major brands and internationally recognized organizations. With its unique structure of divisions, competence centers, and expert teams, valantic offers solutions tailored precisely to the digitalization needs of modern businesses—from strategy to implementation. What Are You Going to Do? Full-stack feature development across the whole path: the React / Next.js frontends where customers configure and order, the .NET microservices behind them, and the API integrations that tie the two together through API Management. You will model relational data in PostgreSQL, work with the Auth0 and OIDC / SAML onboarding, and integrate the headless commerce and content layers. You will work inside a cross-shore Scrum team - reviewing each other's work, demoing your own, and shaping requirements before they are built rather than after. Main Responsibilities: At least 5 years of full-time professional experience building production software Strong C# / .NET Core, specifically ASP.NET Core Web API Strong TypeScript with Next.js and React (Vue is a bonus) REST and API design and integration - you can design a contract, not only consume one Relational data modelling in PostgreSQL Working knowledge of Microsoft Azure fundamentals and a Git-based CI/CD workflow Solid software engineering fundamentals - clean architecture, SOLID, code review as a habit Nice to have Docker and containerization Automated testing, including Playwright Observability basics and security awareness - secret handling, OWASP SonarQube, Datadog, GitHub Advanced Security Why Join Us? Competitive remunerations and benefits package Opportunity to grow your career and get exposure to international brands, working on complex multi-technology projects Friendly, yet competitive work environment where everyone’s success is celebrated Flexible working hours/working location