Backend Engineer with .NET

Who we are
Sea is a software as a service (SaaS) company, bringing true digital transformation to the global shipping industry. We enhance the way shipping professionals work by creating technology for the maritime industry and bringing it to market.
With over 85% of the world’s trade transported by sea, we have a huge opportunity to transform existing manual, offline and disparate processes into a tech-enabled and data-rich experience enabling better decision-making and fewer costly and time-consuming mistakes. Our premier platform, Sea/, is the world’s first digital shipping platform that provides cloud-based applications focused on the pre-fixture and at-fixture space. These connect to create efficiencies and digitise workflows. To understand more about us, please visit

The Role

We are looking for a backend developer experienced in ASP.NET Core for a provision management platform helping vessels to seamlessly order, track stocks, and manage budgets in a collaborative cloud-based system. Working with us you will become part of an international team developing digital products for the maritime industry. 

  • Develop and maintain robust API’s, back-end analytical processes, and development.   
  • Develop, test and release new functions and features, 
  • Participate in planning, creation, and adaptation of Saas Platform
  • Responsible for unit testing your code as well as conducting peer reviews,
  • Working in the Scrum framework 
  • Using Azure DevOps for backlog and repository management 
  • Work in an international team - the team consists of people of different nationalities, so all communication is based on English.

  • Good understanding of English, both spoken and written. (B2+)
  • Flexibility - We are a growing team working in a dynamic environment that requires developers to be able to adapt quickly to change.
  • Responsibility – As a backend developer in our team we need you to have a sense of responsibility for the data integration quality of the application. Our day-to-day work involves integrating with our customers' internal systems and improvements in our systems so keeping it in top-notch condition is of utmost priority.
  • Commitment and proactivity - We need a person who is able to act and shows initiative. Cares about the development of the product.
  • Openness and willingness to cooperate - Our team members work strongly together, are open to help, and are not afraid to ask questions. We need someone who fits into this kind of supportive and collaborative work style.
Core Skills:

  • Programming experience with ASP.NET Core, Entity Framework Core
  • Experience in implementing CQRS and MediatR
  • Knowledge of Microsoft SQL Server (T-SQL)
  • Experience with Azure Cloud
  • Ability to create unit and integration tests using Xunit
  • Has an architectural vision for project development
  • Hands-on experience with building SaaS systems

  • Familiarity with our current project's stack would be a plus: XUnit, Hangfire, Docker, 
  • Experience with queues (Azure Service Bus)
  • Familiarity with gRPC
  • Experience with OpenSearch
  • Experience in handling authentication and authorization libraries (Auth0)
What can you expect from us?
In return you will have an exciting opportunity to join and be part of a leading organisation that is shaping the maritime industry. This is a fast-paced, dynamic, and highly collaborative environment where there are significant opportunities for growth and development.
  • Salary: 18 000 - 24 000 PLN B2B depending on experience
  • Flexible working hours
  • You choose how you work - from our office in Poznań or remotely from home, or like most of us, work hybrid :)
  • Strong focus on growth, interesting projects & people who enjoy working with each other! :)
  • Training budget
  • Private medical care (Luxmed)
  • Voluntary group life insurance
  • MyBenefit or Multisport card
  • Language courses (English and German)
  • Mentoring program and numerous internal pieces of training
  • Employee referral program
  • Paid days off from services (B2B)
  • A paid day off to care for your health - “Dzień na U” with Fundacja Rak'n'Roll. Wygraj życie!
  • Integration events, joint company trips, birthday celebrations and many other