Software Engineer
Flix · Remote Work Poland
Applications are made on Flix's own site. We never sit in the middle.
Job description
Rate: 90 – 120 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 engineer who wants to work on impactful, hands-on engineering challenges. Scope of Services Build and scale the customer service platform that handles millions of passenger conversations across markets — from AI-powered chatbots and voice agents to help center and knowledge base tools. We run a polyglot stack (Python, TypeScript, Terraform) on AWS, integrating Twilio, Cognigy, Kafka and AWS Bedrock. We ship continuously and own our services end-to-end, from Terraform to production. About the Engagement • Design, build and maintain Python (FastAPI) backend services and TypeScript/React frontends across the CS platform • Take greenfield products from concept to production — make architectural calls, prototype, validate, and iterate under uncertainty • Develop and extend Twilio Functions (JavaScript) for voice/IVR and webchat flows • Manage the infrastructure as code with Terraform (HCL) on AWS — you build it & deploy it • Integrate third-party and AI platforms: AWS Bedrock, Twilio, Cognigy, LiteLLM, Kafka • Apply AI to your engineering practice — use and help improve our internal AI tooling to ship faster and raise quality • Instrument and monitor services (Datadog, event forwarding, alerting) and respond to production issues About You • 2–4 years building production software • Strong in Python (FastAPI or similar) and comfortable in TypeScript/JavaScript (React a plus) • Hands-on with AWS and infrastructure-as-code (Terraform) • Solid Git workflow, CI/CD, and containerized services (Docker) • Strong ability to navigate vague or shifting requirements — a bias for action, comfort making decisions with incomplete information, and the judgment to avoid analysis-paralysis • Pragmatic, ships iteratively, communicates clearly • Curious about and comfortable working with AI tooling in day-to-day d