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Offer summary
(Summary generated by AI based on the full job description)
The project involves a ticket sales platform based on microservices in AWS, serving customers via mobile apps, web, and call center. Key technologies include C#, .NET, AWS (S3, ECS, Lambda, SQS) and microservices, WebAPI. Responsibilities cover refactoring and expanding the ticket selling system, maintaining scalable code, and collaborating on new feature implementation.
from: 27 August 2026
to: 26 September 2026
16 000 - 19 700 złnet (+ VAT)/ mth.B2B contract (full-time)
13 000 - 16 000 złgross/ mth.contract of employment
Salary details
basic salary
Offer parameters
level:senior
working mode:remote • hybrid • full office
location:Warszawa, Masovian
Warszawa, Masovian
Requirements
Expected technologies
.NET
C#
AWS
Selenium
Optional technologies
Entity Framework
NHibernate
npm
Our 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#
- Hands-on AWS experience with S3, ECS, Lambda, queues (SQS), and cloud workflows.
- Experience with cloud-hosted microservices, APIs deployed in the cloud, resilience patterns (timeouts, retries), cloud-native design, and observability
- 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
Optional
- Knowledge of basic Authentication: types of Authentication, JWT, OAuth 2.0, OpenId Connect
Your 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
About the project
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.
We provide APIs for different clients including the biggest Global Distribution Systems (GDSes).
System is based on microservice architecture with the use of continuous integration; a few hundred components operate independently and all components run on AWS.
Client is launching a new international platform for ticket sales; modernizing and developing an IT system of an independent online retailer of railroad tickets.
This is how we organize our work
This is how we work
you focus on a single project at a timeyou focus on product developmentagile
Team members
20+ people:backend developer
This is how we work on a project
- Clean Code
- Continuous Integration
- documentation
- issue tracking tools
- test automation
- unit tests
DataArt Poland sp. z o.o.
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.
Join a great company, not merely an individual project
Senior .NET Developer
13k–16k zł / mth. (CoE), 16k–19.7k zł / mth. (B2B)
I apply to:
DataArt Poland sp. z o.o.
Warszawa, Masovian
Need more information?
- Make sure the body of the offer doesn’t already include what you’re looking for.
- Ask a question if you need more information you’re interested in.
- We’ll forward your question to the employer and aim to provide a response within 3 business days.