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

244 - 311 USDNet per day - B2B
Net

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

Net
Full-time
B2B
Senior
Remote
244 - 311 USD
Net per day - B2B

Job description

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.

________________________________________

Key Responsibilities

  • 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 & Experience

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.


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.

Tech stack

    English

    B2

    React

    regular

    JavaScript

    regular

    TypeScript

    regular

    Redux

    regular

    RTK

    regular

    .Net

    regular

    .NET Core

    regular

    REST API

    regular

    Power BI

    regular

    Python

    regular

Office location

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

244 - 311 USDNet per day - B2B
Summary of the offer

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

-, Warszawa
Upvanta sp. z o.o.
244 - 311 USDNet per day - B2B
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