# Software Engineer at Flix

- Company: Flix
- Status: Open
- Workplace: On-site
- Location: Warsaw
- Level: Mid-level
- Discipline: Engineering
- Employment: Contract
- Posted: 2026-10-20
- Skills: AI
- Apply: https://flix.careers/job/8870347002?gh_jid=8870347002

## Description

Rate: 89 – 119 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 

More Flix roles: https://deviantjobs.com/companies/flix