AI/ML Engineer – LLM & Voice Pipeline

Luxoft; United States; On-site; USD 120,000 - 190,000; Full time

Job summary

Luxoft Germany is seeking an experienced AI/ML engineer to advance in-vehicle voice assistants with AI-powered capabilities on Azure. The role focuses on building RAG pipelines, ASR/TTS integration, and edge inference for real-time dialogue in automotive contexts.

You will design prompt chains, evaluate models, and ensure safety/alignment while collaborating with backend engineers and ML teams to deploy production-grade solutions on Azure AKS and streaming infrastructure.

Qualifications

• 3+ years hands-on AI/ML engineering in production environments.
• Strong Python skills; experience with LLM frameworks: LangChain, LangGraph, or equivalent.
• Practical experience building RAG systems (chunking strategies, embedding models, retrieval evaluation).
• Familiarity with Azure OpenAI Service or OpenAI API; prompt engineering best practices.
• Experience with at least one ASR engine (Whisper, Azure Speech, or equivalent) and a TTS system.
• English B2 or above.

Responsibilities

• Design, implement, and optimize RAG pipelines integrating Azure AI Search, vector stores, and LLM completion endpoints.
• Develop and maintain ASR and TTS integration modules, including audio pre- and post-processing using pyAudio and librosa.
• Create LLM prompt chains, evaluation frameworks, and safety/alignment guardrails for in-vehicle dialogue scenarios.
• Prototype AI capabilities such as few-shot adapters, intent classification, and empathic dialogue, then transition prototypes to production.
• Collaborate with Backend Engineers to develop the FastAPI/Kafka interface connecting the AI layer with the streaming infrastructure.
• Contribute to edge AI components including on-device inference, model quantization, and latency management for in-vehicle use.
• Monitor and enhance model quality metrics including BLEU, WER, CER, and faithfulness via continuous evaluation pipelines.
• Participate in code reviews with cross-functional teams, including customer ML engineers.

Skills

Python

LangChain/LangGraph

RAG pipelines

Azure OpenAI / OpenAI API

ASR / TTS

English (B2+)

Tools

pyAudio

librosa

ONNX/TensorRT

Edge deployment

Job description

Project description

Our client is advancing its in-vehicle voice assistant into an intelligent, AI-powered companion. Since 2024, they have been incorporating large-language-model capabilities (Azure OpenAI / ChatGPT) into vehicles equipped with the MIB3 infotainment system, with new E³-architecture models featuring enhanced voice functions from the factory. The AIME (AI Model Engine) backend program supports this development over a multi-year timeline, addressing natural-language dialogue, empathic communication, and the complete cloud-edge data pipeline. DXC Luxoft serves as the end‑to‑end delivery partner, collaborating closely with the client’s engineers within a joint product team on the Azure platform (AKS, Azure OpenAI, Managed Identity, Azure Monitor, Azure DevOps).

Responsibilities

• - Design, implement, and optimize RAG pipelines integrating Azure AI Search, vector stores, and LLM completion endpoints.- Develop and maintain ASR and TTS integration modules, including audio pre- and post-processing using pyAudio and librosa.- Create LLM prompt chains, evaluation frameworks, and safety/alignment guardrails for in-vehicle dialogue scenarios.- Prototype AI capabilities such as few-shot adapters, intent classification, and empathic dialogue, then transition prototypes to production.- Collaborate with Backend Engineers to develop the FastAPI/Kafka interface connecting the AI layer with the streaming infrastructure.- Contribute to edge AI components including on-device inference, model quantization, and latency management for in-vehicle use.- Monitor and enhance model quality metrics including BLEU, WER, CER, and faithfulness via continuous evaluation pipelines.- Participate in code reviews with cross-functional teams, including customer ML engineers.

SKILLS

Must have

• 3+ years of hands-on AI/ML engineering in production environments.
• Strong Python skills; experience with LLM frameworks: LangChain, LangGraph, or equivalent.
• Practical experience building RAG systems (chunking strategies, embedding models, retrieval evaluation).
• Familiarity with Azure OpenAI Service or OpenAI API; prompt engineering best practices.
• Experience with at least one ASR engine (Whisper, Azure Speech, or equivalent) and a TTS system.
• English B2 or above.

Nice to have

• pyAudio / librosa audio signal processing.
• Edge inference: ONNX, TensorRT, or on-device model deployment.
• Automotive in-vehicle speech processing context (noise cancellation, far-field microphones).
• Experience with LLM evaluation frameworks (DeepEval, Ragas, PromptFlow).
• German language skills.