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April 30, 2026
Senior • Remote
12,000 - 19,500 PLN
Wroclaw, Poland
Client
The company is one of the regional leaders in the industry and is currently launching their new product, an international platform for ticket sales. The company's annual income exceeds 100 million euros.
Project overview
The client uses various tools to reach their customers, such as a mobile app, a responsive web application, or communicating with them directly through the call center. The system is very complex, it must comply with a large number of regulations. We provide APIs for different clients including the biggest Global Distribution Systems (GDSes).
Our client is committed to ensuring that the system will be as modern as possible. It is based on microservice architecture with the use of continuous integration, where a few hundred components operate independently of each other and can be used as they become available. This increases the modularity of the system and optimizes the use of the services. All components run on AWS.
Team
Several independent teams are working on the project. The goals of each team are limited to the part of the system they're working on. DataArt's specialists are working on the back-end in one of the teams.
Position overview
DataArt is currently helping to modernize and develop the IT system of an independent online retailer of railroad tickets.
Technology stack
.NET (always working with newest versions)
microservices
REST API
MSSQL migrating to Postgres, DynamoDB
Responsibilities
Refactoring and expanding tickets selling system
Develop, enhance, and maintain high-quality, scalable code
Work collaboratively with cross-functional teams to support the implementation of new features and achieve their objectives
Requirements
7+ years of backend development experience
7+ years of experience in commercial software development on the .NET platform
Understanding of and experience working with C#
Development experience with .NET
Strong skills in Clean Code and OOP
Knowledge of WebAPI
Understanding of microservices architecture
Experience with unit testing (like nUnit) and mocking frameworks (preferred Moq)
Experience with dependency injection (preferred Autofac)
Knowledge of Entity Framework or NHibernate
Experience working with any DBMS system
Understanding of SOLID principles
Understanding of Agile development methodology
Good spoken English
Nice to have
Knowledge of basic Authentication: types of Authentication, JWT, OAuth 2.0, OpenId Connect
What We Offer:
Vacation days: Up to 26 business days per year.
10 illness/special days off per year (fully paid, no medical papers needed) for all contract types
Health and life insurance (Luxmed)
MyBenefit platform with Multisport option
Internal psychological support service
English language classes from the first working day
Access to external learning platforms: O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training
Flexible workplace: work from the office, from home, or choose a hybrid option
Tech Skills Mentoring Program
Opportunities to develop as a public speaker, mentor, or technical interviewer
Fully paid idle (bench) when not involved in a project
Certification reimbursement (AWS, GCP, Microsoft, etc.)