Senior Backend Developer (C# or Node.js)

Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research.

Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

• Strong commercial experience with either C#/.NET 6 or Node.js with TypeScript.
• Very good understanding of microservices architecture, REST standards, and event-driven systems.
• Hands-on experience with message brokers such as RabbitMQ or Azure Service Bus.
• Practical knowledge of relational databases (SQL Server/PostgreSQL) and NoSQL solutions (MongoDB, Redis, Cosmos DB).
• Familiarity with cloud and containerized environments, including Azure, Docker, Kubernetes, or Linux-based systems.
• Experience working with CI/CD pipelines and modern deployment practices.
• Good communication skills and fluent English.

Nice to have:

• Knowledge of Git workflows and version control best practices.
• Experience with monitoring and logging tools in cloud environments.
• Familiarity with Agile/Scrum methodologies.

• Design and develop backend applications and middleware components for scalable IoT solutions.
• Build and maintain REST APIs, WebSocket communication, and asynchronous integrations.
• Create and optimize data models using relational and NoSQL databases.
• Cooperate on cloud deployments, CI/CD processes, and infrastructure automation.
• Ensure high software quality through TDD, unit testing, and integration testing.
• Work closely with cross-functional teams in an Agile environment.