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

243.35 - 310.95 USDNet per day - B2B
JavaScript

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

JavaScript
-, Wrocław +4 Locations

Upvanta sp. z o.o.

Full-time
B2B
Senior
Remote
243.35 - 310.95 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.

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Required Skills & Experience

Technical Skills

•     10+ years of professional software development experience.

•     Front-end:

o     Strong proficiency in React.js, JavaScript/TypeScript, Redux/RTK, hooks, and modern UI patterns.

•     Back-end:

o     Expertise in C# .NET Core, C#, REST APIs, Web APIs, and microservices-based development.

•     Python (pyspark):

o     Hands-on experience with distributed data processing, data pipelines, and analytic transformations.

•     Power BI:

o     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:

o     Strong knowledge of microservices, API design, event-driven architectures, and distributed systems.

•     DevOps / CI/CD:

o     Experience with Azure DevOps, GitHub Actions, Jenkins, or similar.

o     Strong understanding of automated builds, testing, deployment, and monitoring.

•     Cloud Platforms:

o     Experience with Azure or AWS (Azure preferred).

•     Databases:

o     Proficiency with SQL Server, PostgreSQL, or other relational databases; NoSQL knowledge a plus.

•     Containerization:

o     Experience with Docker, Kubernetes, container orchestration.

Domain Knowledge

•     Understanding of capital markets, specifically:

o     Credit risk (PD, LGD, EAD, credit exposure modeling, counterparty risk).

o     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

    React

    advanced

    .NET Core

    advanced

    Python

    advanced

    REST APIs

    advanced

    C#

    advanced

    Redux

    advanced

    TypeScript

    advanced

    JavaScript

    advanced

Office location

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

243.35 - 310.95 USDNet per day - B2B
Summary of the offer

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

-, Wrocław
Upvanta sp. z o.o.
243.35 - 310.95 USDNet per day - B2B
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