Senior .Net Developer

We are looking for an experienced Senior .Net Developer to join our team. In this role, you will be responsible for developing new features for our existing platform and creating entirely new products. Our team has full ownership of the technological vision.

Locations:

This position is open to candidates based in the Tricity area (Gdańsk, Gdynia, Sopot) or nearby.

What you‘ll be doing?

As part of your role, you will be responsible for:

• Developing software that is easy to deploy and maintain
• Spending 80%+ of your time on application development
• Writing high-quality, clean, and testable code
• Creating and maintaining automated tests
• Conducting thorough code reviews
• Actively contributing to architectural decisions and proposing improvements
• Collaborating closely with product designers to refine and enhance solutions
• Working hand-in-hand with business stakeholders to ensure alignment and value delivery

Who are we looking for?

We’re looking for someone who has:

• A minimum of 5 years of commercial experience as a .Net Developer (C#, .NET 5+, Web API, Entity Framework, Git)
• At least 3 years of experience in a senior role
• A high degree of independence and proactivity
• Strong interpersonal and communication skills
• A good understanding of the CI/CD concept
• Proficiency in working with concurrent and asynchronous code
• English proficiency at a minimum B2 level, enabling smooth communication

Nice to have:

• Experience with Microservices / SOA
• Knowledge of Node.js
• Familiarity with cryptocurrencies
• Basic front-end knowledge

Backend Architecture

• The project was initially built as a monolithic application to reduce operational overhead
• It has now reached a stage where transitioning to a microservices architecture is justified
• New functionalities are developed as separate, containerized services
• Services communicate via RabbitMQ and API calls (REST)

Tech Stack

Backend

• .NET 10
• Entity Framework Core, Dapper
• MassTransit
• SignalR
• MediatR
• Fast Endpoints
• Node.js
• YARP gateway
  
  Frontend
• React, Next.js
  
  Databases & Queues
  
• PostgreSQL – general-purpose relational database
• Redis – used as a memory cache and pub/sub
• RabbitMQ – message queue
  
  DevOps
• Docker
• Focus on automation and “source control”
• Terraform + Ansible
• Jenkins Pipeline as Code + Configuration as Code

Future Plans

• Architecture transformation project from monolithic to service-based
  • The project is already in progress
• Development of horizontal service scaling
• Migration of the system to K8s
  

What You Get

• Salary: 135-189 PLN net/hour (B2B) + VAT
• Remote work. From time to time, we meet in person at the office- for collaboration, key sessions, or when it adds extra value to the project.
• Freedom to choose your tools and shape your role.
• Opportunities for growth and direct influence on architecture & system development.
• Work in Kanban methodology.
• Collaboration with highly experienced developers, including direct cooperation with the company’s CTO.