Senior Fullstack (.Net) Developer

About the Project

Currently we are looking for Senior Fullstack Developers (.Net) who will join project from logistics industry. 

Work Mode: 100% remote 

Duration of the project: 6 months

Job Responsibilities

• Developing, testing, and deploying software through standardized CI/CD pipelines
• Creating microservices for data processing, database interactions (read/write), data exposure to other systems, and additional functionalities
• Implementing security features such as federated authentication, role-based access control, and other authorization mechanisms
• Applying appropriate architectural patterns based on context, including event-driven data streaming, request-response APIs, file-based processing tasks, and more
• Operating and maintaining applications to ensure smooth and error-free performance
• Validating software through functional, quality, resilience, performance, and scalability testing
• Ensuring accessible logging is in place, integrated with the central logging system, and that critical alerts are properly configured
• Working closely with fellow Developers and DevOps Engineers to exchange knowledge, design patterns, and best practices - particularly in microservice integration, database operations, and CI/CD workflows across multiple environments
• Collaborating directly with end users and the Product Owner to deeply understand the business needs and context

Expectations

• Min. 6 years of experience on a similar position
• Proficient in full-stack .NET and web application development, including technologies such as C#, ASP.NET Core, Web API, Entity Framework, MongoDB Driver, Angular/Vue.js/React, JavaScript, NodeJS, TypeScript, HTML, and CSS
• Experienced with development tools including Visual Studio, Visual Studio Code, Azure DevOps, and GIT
• Skilled in writing SQL queries, stored procedures, and optimizing database performance using tools like SQL Server Management Studio and MongoDB Compass
• Strong knowledge of object-oriented programming and SOLID design principles
• Experience building RESTful services and testing them using Postman
• Proficient in unit testing with xUnit and Moq
• Hands-on experience using Docker for containerizing applications and Kubernetes for managing and orchestrating containerized services, ensuring smooth deployment and scalability
• In-depth understanding of concurrency, resiliency, dependency injection, and caching strategies
• Solid understanding and practical experience with UI development
• English on an advanced level (written and spoken)

Nice to have:

• Strong understanding of message queuing using Kafka
• Experience with Agile methodologies
• Familiar with tools such as JIRA, Confluence, BitBucket, Elastic Search, and Kibana

We Offer

• Ongoing support from a dedicated agent who is caring about your project continuity, contact with clients, necessary formalities, work comfort, and development
• Career Development Program – advice on career planning based on the latest trends and market needs in IT, including consultations with career agents and mentors
• Access to 7N Learning & Development – a development and educational platform offering webinars, a library of articles and industry reports, and frequent invitations to both one-time and recurring events focused on technical, business, and lifestyle topics
• Spectacular events, both for you (e.g., annual Kick-Off trip, Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g. family picnics),
• Professional growth beyond your current project. You can actively engage in knowledge sharing through the 7N Services offering, designed for 7N clients.
• Connections and access to the expertise of top IT professionals in the market – the average professional tenure of our consultants in Poland is over 10 years,
• A complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad.

About 7N

Constantly searching for projects, difficult rate negotiations, lack of development support – sounds familiar? At 7N, you gain not only stability of contracts but also the personal involvement of a dedicated agent who ensures your professional comfort and continuous access to development initiatives. 

Our mission is to provide stable and rewarding collaborations that drive your success as an IT expert and the success of our clients. We build long-lasting relationships based on Scandinavian values and 30 years of experience creating IT solutions for over 200 organizations.