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

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

• 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