Senior Full-Stack Integration Lead (AI) (contract)

Please note this position is for one project not an in-house position so the social package including benefits like sick leave public holidays days off vacations accounting and necessary equipment provision is not covered by Selecto.

Were building an AI-powered event platform (AI Concierge real-time translation 3D avatar assistant voice interaction) for a major international event. The AI backend and the Web/Mobile apps are being built by separate partner teams. We need one strong technical owner to integrate everything keep the roadmap on track and represent the technical side directly on partner calls.

This is not an architecture-only role. You will be hands-on: writing integration code debugging across systems and unblocking issues live on calls with partner teams.

Engagement: 5-6 months with the possibility of prolongation

Type: Full-time hands-on

Location: Remote (must overlap for live partner calls)

English Proficiency Level: Upper Intermediate

Team composition: 2 Developers 2 Designers Account Manager Stakeholders.

What Youll Own

• Integration- connect the AI backend (built by our AI team) with the Web Mobile apps (built by partner teams)

• FoundationLayer - set up and harden the LLM gateway RAG vector store AI translation engine guardrail layer content-sync pipeline infrastructure and observability

• AI Concierge- chat interface (web mobile) via tool-calling API session recommendationspersonalized agenda builder dining recommendations and booking

• Travel & Itinerary- travel packages itinerary suggestions AI itinerary builder

• Real-time layer- AI matchmaking for networking live UI/content translation WebRTC streaming infrastructure voice pipeline (STT TTS RAG) 3D avatar real-time rendering

• Delivery- full platform integration testing QA sign-off UAT completion production deployment documentation handover

Must-Have

• Strong backend engineering ( or Python) with real API integration experience not frontend-only

• Practical shipped experience with LLM/RAG systems (gateway routing vector databases prompt/guardrail design) not just experimentation

• WebRTC / real-time streaming experience

• Comfortable owning integration across 23 external teams simultaneously

• Strong communicator will join live partner calls report status and resolve blockers on the spot without hand-holding

Nice-to-Have

• 3D / avatar rendering pipeline experience

• Multi-language / localization systems experience

• Prior work on event-tech or travel-tech platforms