Fullstack LLM Application Engineer

Experis SA - Your IT Partner in Switzerland, , Experis SA, the Swiss branch of the ManpowerGroup, is a leader in recruiting specialized IT profiles. We offer flexible solutions: temporary assignments, permanent placements, project management, and professional training. Our expertise covers digital transformation, cybersecurity, cloud, infrastructure, and more. Thanks to our global reach combined with a pragmatic and personalized approach, we effectively support both professionals and companies in achieving their goals.

Experis SA - Your IT Partner in Switzerland

Experis SA, the Swiss branch of the ManpowerGroup, is a leader in recruiting specialized IT profiles. We offer flexible solutions: temporary assignments, permanent placements, project management, and professional training. Our expertise covers digital transformation, cybersecurity, cloud, infrastructure, and more. Thanks to our global reach combined with a pragmatic and personalized approach, we effectively support both professionals and companies in achieving their goals.

Title: LLM Application Engineer (Full-Stack) - AI Chatbots for Financial Environments

Location : Geneva, Switzerland - Hybrid Work Model

Type : Permanent

Languages : Fluent English (C1+), other languages an asset

About the Role

We are looking for an experienced Full-Stack Engineer to design, build, and deploy AI-powered chatbot applications serving mission-critical functions across trading, middle office, and back office environments. You will take end-to-end ownership of the application stack, from UI to secure backend APIs and integrations with existing enterprise systems, collaborating closely with data science and infrastructure teams.

Key Responsibilities

• Chat UI Development: Create responsive React/TypeScript interfaces with SSO, semantic search, and chat patterns.

• API & Model Serving: Build FastAPI REST/gRPC endpoints, deploy LLMs using Triton, Ray Serve, or AWS SageMaker with GPU-aware autoscaling.

• Security: Implement OAuth2/OIDC, prompt validation, rate limits, audit logging, and row-level entitlements.

• Integration: Connect with Java/.NET systems, FIX, Kafka, and message queues with low latency.

• Monitoring & Deployment: Configure observability dashboards (Prometheus/Grafana), manage GitLab CI/CD, perform blue-green deployments.

• Infrastructure Automation: Contribute Terraform modules for EKS, API Gateways, Transit Gateways, and Lambda functions.

Technical Skills Required

• Python 3.x, FastAPI, LangChain/Haystack, React, TypeScript

• Hugging Face, AWS Bedrock SDK, Triton Inference Server, Ray Serve, AWS SageMaker

• OAuth2, OIDC, SSO

• SQL, pgvector, Pinecone, OpenSearch

• Docker, Kubernetes/EKS, Terraform, GitLab CI

• REST, gRPC, WebSockets, SSE

Profile

• 4+ years in developing cloud-native, user-facing applications (finance/trading preferred).

• Proven deployment of LLMs or deep learning models in production.

• Strong presentation and stakeholder communication skills.

• Ability to thrive in a high-speed environment while maintaining enterprise-grade reliability.

Interested ?

Don't hesitate to apply ! We are looking forward to see your profile and experiences.