Fullstack Developer (.NET + React)

We are looking for an experienced Full-Stack Developer to join a long-term project for one of the world's leading professional services organizations. You will work within a global technology team delivering solutions for a UK-based banking client in a regulated, enterprise-scale environment.

Location: 100% Remote (Poland) with occasional visits to Warsaw office

Client: Global professional services firm, banking & financial services sector, UK

Requirements

3+ years of experience in full-stack development, with proficiency in most of the following:

• C#, ASP.NET Core, .NET Web API

• React — state management, component architecture

• HTML5, CSS3, JavaScript / TypeScript

• RESTful API design and integration

• SQL Server — queries, stored procedures, functions, views

• Entity Framework 

• Design patterns and database normalization

• Azure DevOps  for source control and CI/CD

• Application security, performance, and scalability best practices

• Bachelor's degree in Computer Science or related field

Nice to Have

• Azure Cloud Services and cloud-native architecture

• SFTP and encryption/secure file transfer protocols

• Experience with vendor software integration and custom interfaces

Responsibilities

• Design, develop, and maintain web applications using .NET (C#, ASP.NET Core) and React

• Build responsive user interfaces with HTML, CSS, JavaScript, and React

• Develop and consume RESTful APIs to connect client-side and server-side components

• Implement and optimize data storage using SQL Server (stored procedures, functions, views)

• Perform coding, debugging, testing, and troubleshooting throughout the development lifecycle

• Maintain and enhance existing systems, fixing complex bugs and escalating risks where needed

• Capture detailed requirements from stakeholders and translate them into technical specifications

• Ensure adherence to coding standards, design patterns, and security best practices

• Collaborate with vendor teams and third-party integrations

• Monitor emerging technologies and contribute ideas for continuous improvement

We Offer

• 100% remote work from Poland

• Occasional team meetups in Warsaw

• Long-term project with a prestigious international client

• Exposure to enterprise-scale banking solutions

• B2B Contract

• Private medical care (Luxmed)

• MultiSport sports card