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Flix

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

Warsaw, Poland

Apply on Flix’s site ↗View original ad
Location
Warsaw, Poland
Work
Not stated
Employment
Full-time
Level
Senior
Function
Engineering
Pay
PLN 135.00 – PLN 170.00 an hour (read from the ad)
Posted
11 days ago

About the 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 professional 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

  • Languages & Frameworks: Python, JavaScript, TypeScript, Java, flask, FastAPI, Node.js, React, Spring Boot.
  • Cloud Providers and IaC: AWS, Azure, Terraform, Serverless.
  • Data Layer: Elasticsearch, Snowflake
  • Streaming and Messaging Layer: Kafka.
  • Observability: Datadog, Kibana.

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

Source

Posted by Flix on their own hiring page, flix.careers. OptiTalent shows it as published, read 07 Nov 2026 01:33 UTC; the original is the reference.

View the original ad ↗

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