Full Stack Development Lead (React & C# .NET)

Start Date: ASAP / Within 1 Month / Flexible Work Model: 100% remote  Contract Type: B2B (160-180 PLN/h + VAT) We are looking for an experienced Full Stack Development Lead who will take ownership of end‑to‑end solutions across React and C# .NET Core while contributing to technical direction and supporting a collaborative engineering culture. This role is ideal for a strong Senior Full Stack Developer who is ready to expand into leadership responsibilities, work closely with cross‑functional teams, and influence architectural decisions in a modern, cloud‑driven environment.  Expectations • Proven experience in full‑stack development using React, TypeScript, and C# .NET Core. • Good understanding of microservices, distributed systems, and CI/CD pipelines. • Exposure to cloud platforms (Azure preferred), containers, and modern DevOps practices. • Experience with data workflows (pyspark) or BI solutions (Power BI) is a strong advantage. • Ability to collaborate with technical and business stakeholders and take initiative in solution design. Responsibilities • Contribute to the design and delivery of full‑stack applications using React and C# .NET Core. • Support architectural discussions around microservices, APIs, and event‑driven components. • Collaborate with data engineers on pyspark workflows and Power BI reporting enhancements. • Promote engineering best practices, code quality, and maintainable development patterns. • Mentor team members and support planning, collaboration, and continuous improvement efforts. What We Offer • Medicover healthcare package • Multisport card • Access to an e-learning platform • Group life insurance