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Senior Fullstack Software Engineer (Python/Java) - Service Agreement

flix · Warsaw · Full-time

About this role

Rate: 135 – 170 PLN/hour (B2B)

We are looking for an experienced Software Engineer to join Flix on a freelance/service agreement basis (B2B contract). This is a contractor engagement for a seasoned professiona l with a full - stack mindset.  

Scope of Services

Developing Flix’s contact center applications, with a focus on scalable agent-facing interfaces and automation . The role will involve extensive discovery to identify the most efficient and effective workflows.  

Our tech stack

About the Engagement

• Deliver solutions for a defined portfolio of products, contributing to business objectives.  

• Design and develop user-focused solutions tailored to product requirements and user needs.  

• Apply Agile methodologies to organize and execute the development process.  

• Develop and enhance products using modern technology stacks.  

• Make technical decisions within the scope of services provided, promoting technical excellence and consistency across solutions.  

About You

• Minimum 5 years of professional experience in full-stack development, with a focus on architecture, system design, and legacy product migration.  

• Extensive experience with Python and its ecosystem for the development of new products.  

• Solid knowledge of Java for the maintenance and further development of existing products.  

• Strong focus on quality assurance practices and technical standards throughout the product development lifecycle.  

• Hands-on with automated testing and experience with different test runners.  

• Comfortable with Agile methodologies in planning and executing development work.  

Cooperation model

• Cooperation based on a service agreement (B2B/freelance contract), not an employment contract.

• You will operate as an independent contractor, responsible for delivering agreed services and submitting invoices  

• Location : open for contractors based in Poland