Senior Backend Developer — Greenfield Digital Products

Senior • Remote

$155 - $175/hr

Warsaw, Poland

🌍Work mode – fully remote.

📑Assignment type: up to 175 zl/h - B2B.

⏳Contract length – 12 months with possibility of extensions.

⏰Start – ASAP/1 month.

✈Business Travels: to Denmark 2 x times a year.

📕Language – English.

⚙️Industry - pharmaceutical.

Summary: The Senior Backend Developer will play a key role in designing and enhancing backend architectures for innovative digital solutions, directly impacting production efficiency and patient treatment access.

Main Responsibilities:

The Senior Backend Developer will be responsible for the design, development, and maintenance of backend systems, ensuring high-quality application performance.

Design, develop, test, and maintain backend systems using C#/.NET 9 (Azure Functions and Web APIs)
Configure and optimize Azure Cognitive Search (semantic search, custom indexers)
Implement real-time capabilities using Azure Web PubSub
Manage APIs via Azure API Management
Provision and manage infrastructure as code using Bicep, including RBAC and service configurations
Work with NoSQL and relational stores: Azure Cosmos DB and Azure SQL for BI/reporting needs
Drive CI/CD with GitHub and GitHub Actions; maintain reliable pipelines and automated tests
Troubleshoot, profile, and optimize performance and reliability
Participate in code reviews, mentor peers, and contribute to architectural decisions
Collaborate closely with product and design colleagues in an Agile environment

Key Requirements:

BSc or MSc in Computer Science, Software Engineering or related field
5+ years backend development experience with C#/.NET
Practical experience with Azure (Functions, Cosmos DB, API Management)
Experience with infrastructure as code (Bicep or equivalent) and CI/CD pipelines (GitHub Actions preferred)
Strong software engineering fundamentals, testing practices, and design patterns
Fluent English, written and spoken
Familiarity with serverless/microservices patterns and mobile/PWA backends
Knowledge of observability practices (logging, metrics, tracing)

Nice to Have:

Knowledge of software architecture principles
Experience in mentoring junior developers
Exposure to Agile methodologies

emagine Polska

emagine Polska is a company operating in the telecommunications industry, based in Warsaw, Poland. The company is involved in innovative projects, focusing on the development and maintenance of portals using modern technologies. Emagine Polska values creativity, motivation, and independence in its team members, emphasizing a collaborative work environment. The company is structured to support agile methodologies, particularly SCRUM, and is integrated with DevOps practices, highlighting its commitment to efficient and effective project management. Emagine Polska is distinguished by its focus on leveraging cutting-edge technologies like React.js and TypeScript, and its dedication to fostering a culture of continuous improvement and innovation.