Full-Stack Middle+/Senior Developer

Senior • Remote

Warsaw, Poland

We’re looking for a Senior Full-Stack Developer to join the active development phase of a large-scale project built from scratch for a global client. This is a long-term opportunity to be a part of a strong distributed team (20+ engineers), influence architecture decisions, and drive best development practices.

Responsibilities

Design, develop, and maintain scalable web applications using ASP.NET Core and Angular (up to v20)
Build reusable UI components, control libraries, and design systems
Develop and maintain RESTful APIs and integrate them with front-end components
Participate in architectural and technical discussions, contributing to best practices and system design
Collaborate closely with designers, backend engineers, and stakeholders to ensure intuitive and responsive user experiences
Ensure high code quality through unit, integration, and end-to-end tests
Contribute to CI/CD pipelines, deployment automation, and DevOps processes in AWS
Work in an Agile environment, participating in code reviews, grooming, and sprint ceremonies

Requirements

5+ years of professional software development experience
Strong hands-on experience with ASP.NET Core/C# and Angular (v17–v20)
Experience developing and consuming RESTful APIs
Good understanding of microservices and containerization (Docker)
Experience working with AWS Cloud services (EC2, Lambda, S3, etc.)
Solid understanding of software design principles (SOLID, OOP) and database design (SQL/NoSQL)
Experience writing and maintaining unit/integration/e2e tests
Good spoken and written English for daily communication with the international team

Nice to Have

Experience with CI/CD pipelines, GitHub Actions, or similar automation tools
Familiarity with micro-frontend architecture
Experience with Kubernetes, Terraform, or infrastructure-as-code

We offer:

Projects for such clients as PayPal, Wargaming, Xerox, Philips, Adidas and Toyota
Competitive compensation that depends on your qualification and skills
Career development system with clear skill qualifications
Flexible working hours aligned to your schedule
Options to work remotely

Itransition

Itransition is a global software development company that specializes in delivering custom software solutions for a wide range of industries. The company is known for its expertise in building scalable and robust applications, often collaborating with high-profile clients such as PayPal, Wargaming, Xerox, Philips, Adidas, and Toyota. Itransition values innovation, quality, and collaboration, fostering a strong distributed team environment with over 20 engineers. The company emphasizes best development practices and is committed to maintaining high code quality and efficient DevOps processes. Itransition operates in an Agile environment, promoting continuous learning and career development for its employees. The company is flexible, offering remote work options and adaptable working hours to accommodate diverse schedules.