Senior Full Stack .NET Developer

Senior • Remote

$35 - $45/hr

Warsaw, Poland

PROJECT INFORMATION:

Industry: Banking

Client: A company from Sweden / start-up environment

Remote work: 100%

Project language: English

Business trips: Occasionally to Sweden, maybe one per year

Project length: 12 months contracts + prolongations

Start: ASAP / Flexible - we are focused on finding the best candidate

Assignment type: B2B

Remuneration: 35-45 EUR/h

Localization in the organization: this consultant will be a part of a Core Development Team of 9 Full Stack Developers.

The first challange and focus: on the customer service backoffice application (greenfield).

Introduction & Summary

We are seeking a Senior Full Stack .NET Developer with a proven track record in designing and implementing scalable, secure, and user-friendly applications. The ideal candidate will have extensive experience in both frontend and backend technologies, particularly with .NET 9/10, microservices, AWS (hybrid and serverless) and modern authentication mechanisms. A strong understanding of database optimizations and API design is essential for this role, along with the ability to deliver responsive user interfaces and robust backend services.

Main Responsibilities

The main duties of the Senior Full Stack .NET Developer include:

Develop full stack applications utilizing Vue and React for the frontend and .NET Core for backend APIs.
Develop and maintain microservices hosted on AWS cloud.
Build and maintain REST and gRPC services for effective cross-system communication.
Design and implement secure authentication and authorization flows (JWT, OAuth2, IdentityServer).
Optimize database access and performance using Entity Framework Core.
Collaborate closely with UX/UI designers and DevOps engineers to create scalable and efficient solutions.

Key Requirements

Strong experience with JavaScript/TypeScript, particularly in building SPAs with Vue.js and React.
Experience with .NET 9+.
Proficient in Entity Framework (EF Core) for data modeling and optimization.
Knowledge of gRPC services for high-throughput, low-latency communication.
Experience with relational databases, specifically MySQL, and NoSQL solutions like DynamoDB.
Familiarity with cloud platforms, focusing on AWS, serverless functions, and containerization technologies such as Docker & Kubernetes.
Proficient in version control systems (Git, GitHub, GitLab).
Experience with CI/CD pipelines, particularly GitLab and Octopus.
Understanding of testing methodologies, including Integration Testing and xUnit.
Experience working within an Agile/Scrum methodology.
Knowledge of authentication techniques such as JWT, OAuth2, and role-based access control.

Nice to Have

Experience with UI frameworks like Vuetify for creating Material Design-based responsive interfaces.
Familiarity with state management tools, particularly Pinia for centralized state handling.

emagine Polska

emagine Polska is a company operating in the telecommunications industry, based in Warsaw, Poland. The company is involved in innovative projects, focusing on the development and maintenance of portals using modern technologies. Emagine Polska values creativity, motivation, and independence in its team members, emphasizing a collaborative work environment. The company is structured to support agile methodologies, particularly SCRUM, and is integrated with DevOps practices, highlighting its commitment to efficient and effective project management. Emagine Polska is distinguished by its focus on leveraging cutting-edge technologies like React.js and TypeScript, and its dedication to fostering a culture of continuous improvement and innovation.