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Open nowPosted 2 days agoWe saw it 14 min after it went up

Software Engineer

Flix122 open roles

Where
Warsaw
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Your applicationOpen nowSoftware EngineerFlix · Warsaw

  1. YouYes, apply to this one.

  2. CV RocketCV written for this posting.

  3. 25 readersRecruiter, hiring manager, skeptic. Round after round.

  4. CV RocketApplied on Flix's own form.

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The clock on this job

Early applications get read.

11.5% of postings close within 7 days. Measured by our own scanner across the market. Flix postings stay open a median of 23 days.

Share of postings closed within
  1. 2.0%1 day
  2. 4.3%3 days
  3. 11.5%7 days
  4. 18.1%14 days
  5. 35.6%30 days
  6. 44.6%60 days
This job: posted 2 days ago

Flix median: 23 days open

The posting

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 development

Preferred Skills:

  • Experience building products from scratch (0→1) in a fast-moving team
  • Conversational AI / chatbot / IVR experience (Twilio, Cognigy, DialogFlow)
  • LLM / GenAI integration (Bedrock, RAG, MCP servers)
  • Event streaming (Kafka) and observability (Datadog)
  • Customer-service or contact-center domain exposure

Collaboration 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
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