Senior Full Stack Developer React & .NET Core

O projekcie: About the Role  We are seeking a highly experienced Senior Full Stack Developer with deep expertise in React on the frontend and C# .NET Core on the backend. The ideal candidate will have substantial hands-on experience developing scalable applications, strong exposure to cloud-native architectures, and a solid understanding of capital markets—particularly in credit risk and market risk domains. Experience with Python (pyspark) for data-driven workflows and a strong command of CI/CD, microservices, and event-driven architectures is essential.  Required Skills & Experience  Domain Knowledge  - Understanding of capital markets, specifically:   - Credit risk (PD, LGD, EAD, credit exposure modeling, counterparty risk).   - Market risk (VaR, sensitivities, stress testing, pricing concepts).   - Familiarity with regulatory frameworks (e.g., Basel, FRTB, IFRS9) is a strong advantage.   Offer:  - Location: Poland, remote + equipment pick up in Warsaw/Wrocław   - Zatrudnienie: przez apreel na zasadach B2B   - Start: asap   - Rate: up to 155 zł netto/ h Wymagania: Technical Skills  - 10+ years of professional software development experience.   - Front-end:   - Strong proficiency in React.js, JavaScript/TypeScript, Redux/RTK, hooks, and modern UI patterns.   - Back-end:   - Expertise in C# .NET Core, C#, REST APIs, Web APIs, and microservices-based development.   - Python (pyspark):   - Hands-on experience with distributed data processing, data pipelines, and analytic transformations.   - Power BI:   - Extensive experience developing dashboards, data models, DAX calculations, and enterprise-grade BI solutions.   - Strong understanding of data modeling, performance tuning, and governance in Power BI.   - Architecture:   - Strong knowledge of microservices, API design, event-driven architectures, and distributed systems.   - DevOps / CI/CD:   - Experience with Azure DevOps, GitHub Actions, Jenkins, or similar.   - Strong understanding of automated builds, testing, deployment, and monitoring.   - Cloud Platforms:   - Experience with Azure or AWS (Azure preferred).   - Databases:   - Proficiency with SQL Server, PostgreSQL, or other relational databases; NoSQL knowledge a plus.   - Containerization:   - Experience with Docker, Kubernetes, container orchestration.   Soft Skills  - Strong analytical and problem‑solving abilities.   - Excellent communication skills and ability to interact with technical and non-technical stakeholders.   - Collaborative, agile mindset with experience in Scrum/Agile environments.   - Ability to work independently and lead technical solutions end‑to‑end. Codzienne zadania: - Design, develop, and maintain full stack applications using React, C#.NET Core, and supporting technologies.   - Build high-performance backend services, RESTful APIs, and microservices with focus on scalability, maintainability, and resilience.   - Develop responsive, modular, and accessible UI components using React and modern JS/TS patterns.   - Collaborate closely with business stakeholders and risk domain experts to deliver solutions in credit risk, market risk, and related capital markets functions.   - Work with Python (pyspark) for data transformation, data pipelines, and analytics workflows.   - Develop, optimize, and maintain Power BI dashboards, data models, and analytical reports for business users.   - Implement and optimize CI/CD pipelines, ensuring robust automated testing, deployment, and monitoring.   - Architect and contribute to event-driven and distributed system designs using technologies such as Kafka, Event Hub, or similar.   - Drive engineering best practices: code reviews, unit/integration testing, performance tuning, documentation.   - Contribute to cloud migration and modernization initiatives, especially in Azure or AWS environments.   - Mentor junior developers and collaborate within a cross-functional agile team.