Senior .NET Full Stack Developer

GE, BG

You can join a high-performing international team dedicated to software engineering for leading global (re-)insurers.

About the project‍

You will contribute to the modernization of an exposure-gathering and portfolio risk modelling solution. The initiative involves transitioning from a legacy WPF .NET application to a scalable, cloud‑ready architecture built on .NET and React. The new solution will be integrated into a reinsurance pricing platform using a micro‑frontend approach, ensuring modularity and seamless interoperability. Data will be captured and managed using Azure SQL Server, supporting robust performance and long‑term scalability.

The existing system will be completely re‑engineered, offering a unique opportunity to shape a project from its very beginning.

About the role

As a Senior .NET Full-stack Engineer, you will play a key role in designing and delivering a modern, cloud-ready web application. You will work closely with the agile development team, contribute to both backend and frontend development using .NET and React, and help shape the architecture of a scalable solution that drives our client’s global pricing strategy and operational efficiency.

Your responsibilities

• Designing and implementing a complex, enterprise-grade web application using C# and .NET Core 10.
• Contributing to the development of a new user interface utilizing the React framework.
• Collaborating within an Agile development team, working in cross-functional teams.
• Ensuring development best practices such as code quality, scalability, and maintainability.
• Monitoring product quality, ensuring proper code validation, and applying design patterns.
• Encouraging technical discussions within the team for continuous product improvement.
• Actively communicating with stakeholders from different hierarchy levels and diverse backgrounds, understanding projects’ environment, obstacles, and identifying possible solutions, demonstrating analytical and problem-solving skills.

Your skills and experience

Technical expertise:

• Bachelor's degree in an IT-related field or equivalent work experience.
• Proficiency in English (minimum B2 level).
• Proven track record of at least 5 years of relevant experience as a software engineer using C# and .NET Core.
• Strong understanding of the .NET framework, C#, and Entity Framework.
• Strong understanding of object-oriented programming, data structures, algorithms, and complexity analysis.
• Expertise in designing scalable, reliable distributed systems and microservices using best-practice architecture principles and design patterns.
• Experience in designing, maintaining, and running APIs.
• In-depth experience in designing and implementing relational data models.
• Experience in monitoring the quality of the product; knowledge of testing approaches and code validation.
• Excellent knowledge of browser troubleshooting and debugging practices and techniques.
• Experience in continuous integration and delivery tools (Azure DevOps).
• Experience with Agile frameworks such as Scrum and SAFe for software development and delivery.
• Practical experience with React for building and maintaining web application features; ability to work independently on day-to-day frontend tasks.
• Familiarity with core frontend concepts such as component lifecycle, state management, and REST API integration within a React application.

Soft skills

• Excellent command of English, both written and spoken.
• Reliable, proactive, and self‑motivated.
• Team‑oriented with a growth mindset.
• Critical thinker who challenges the status quo.
• High sense of responsibility, discretion, and fairness.
• Strong documentation and compliance mindset.
• Ability to prioritize tasks and manage time effectively in a fast‑paced environment.
• Proven ability to collaborate across departments and clearly communicate technical concepts to non‑technical stakeholders.

Nice to have

• Exp