Senior Full Stack Developer (React & .NET Core) (m/k/n)

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.

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.

Required Skills & ExperienceTechnical 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.o     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.o     Strong understanding of automated builds, testing, deployment, and monitoring.
• Cloud Platforms:Experience with Azure or AWS (Azure preferred).
• Databases:oProficiency with SQL Server, PostgreSQL, or other relational databases; NoSQL knowledge a plus.
• Containerization:Experience with Docker, Kubernetes, container orchestration.

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.

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.

Must have

• React
• JavaScript
• TypeScript
• Redux
• UI
• C#
• .NET Core
• REST API
• Web API
• Python
• Data pipelines
• Power BI
• Data models
• DAX
• BI
• Data modeling
• Performance tuning
• Microservices
• API
• DevOps
• Azure DevOps
• GitHub Actions
• Jenkins
• Testing
• Cloud platform
• Azure
• AWS
• SQL
• PostgreSQL
• Relational database
• NoSQL
• Docker
• Kubernetes
• Communication skills