Senior Full-Stack Engineer About the Role: We are looking for a Senior Full-Stack Engineer to help build and scale a modern SaaS platform. In this role, you will be responsible for developing web-based management portals, implementing complex workflows, and delivering intuitive user experiences for business users. You will work closely with product, mobile, backend, and data teams to transform product requirements and Figma designs into high-quality, production-ready solutions. Responsibilities: Develop and maintain the web management portal and shared product workflows. Build and enhance dashboards, forms, asset management modules, location hierarchies, gateway views, rules engines, alerts, and audit logs. Design and implement backend services and APIs where required. Translate Figma designs into responsive, production-quality user interfaces. Implement authentication, authorization, and role-based access controls. Support multi-tenant SaaS architecture and workflows. Collaborate closely with backend, data, product, and mobile engineering teams. Ensure high standards of performance, scalability, maintainability, and user experience. Participate in architectural discussions and technical decision-making. Requirements: Strong commercial experience with React, Next.js, and TypeScript. Experience building and maintaining backend APIs and services. Solid knowledge of PostgreSQL. Experience developing SaaS administration portals, dashboards, data tables, forms, and workflow-driven applications. Strong understanding of modern frontend architecture and best practices. Experience working from design systems and Figma mockups. Strong product mindset and attention to UX/UI details. Excellent problem-solving and communication skills. Upper-Intermediate English level or higher. Nice to Have: Experience with Firebase Authentication or similar authentication providers. Experience building alerting, monitoring, or rules-based systems. Multi-tenant B2B SaaS product experience. Experience in healthcare, IoT, logistics, operations, or related industries. Familiarity with cloud platforms and modern deployment practices. What we offer: Flexible Work Environment: Opportunity to work fully remotely. 1:1 English Classes: Individual English language lessons to improve communication skills. Great Team: Supportive, collaborative, and dynamic international team culture. Paid Time Off: 18 days of paid annual vacation and 7 paid sick leave days. Public Holidays: Ukrainian public holidays are preserved. Flexible Payment System: Multiple convenient payment options with easy fund withdrawal.