ML Engineer — Conversational AI & Multilingual Systems

Proto; Karachi Division; On-site; PKR 1,800,000 - 3,200,000; Full time

Job summary

Proto is seeking a Machine Learning Engineer to design, train, evaluate, and improve language models and conversational AI across its products and deployments. You will collaborate with Product, CX, Engineering, and Languages teams to enhance multilingual understanding, intent recognition, response quality, retrieval systems, and AI agent performance.

This role emphasizes hands-on experimentation, model optimization, and turning AI research into scalable, production-ready solutions across voice

Qualifications

• Bachelor's degree in Computer Science, AI, Data Science, Linguistics, or related field.
• Strong understanding of NLP concepts and ML fundamentals.
• Experience with Python and NLP frameworks such as Hugging Face, spaCy, NLTK, LangChain, and LlamaIndex.
• Experience with LLMs and prompt engineering.
• Familiarity with vector databases and semantic retrieval systems.
• Experience handling structured and unstructured datasets.
• Understanding of APIs, integrations, and cloud environments.
• Strong analytical and problem-solving skills.
• Ability to work independently in a remote and fast-paced environment.
• Applicants must be based in Karachi, Pakistan.

Responsibilities

• Develop and improve ML pipelines for conversational AI systems.
• Fine-tune and evaluate large language models (LLMs).
• Build multilingual ML capabilities for low-resource languages.
• Work on intent classification, entity extraction, semantic search, summarization, and retrieval systems.
• Improve AI response quality, latency, and accuracy.
• Collaborate with CX and Product teams to analyze user conversations and improve AI behavior.
• Design prompt engineering and RAG workflows.
• Work with speech-to-text and text-to-speech integrations when needed.
• Create evaluation metrics and benchmarking processes for AI performance.
• Support deployment and monitoring of ML models in production environments.
• Research new ML approaches and recommend improvements to Proto's AI stack.

Skills

NLP concepts

Python

LLMs

Prompt engineering

Vector databases

Semantic retrieval

APIs & cloud

Education

Bachelors in CS/AI/Data Science/Linguistics

Tools

Docker

Kubernetes

Job description

Proto is seeking a Machine Learning Engineer to design, train, evaluate, and improve language models and conversational AI across its products and deployments. You will collaborate with Product, CX, Engineering, and Languages teams to enhance multilingual understanding, intent recognition, response quality, retrieval systems, and AI agent performance.

This role emphasizes hands-on experimentation, model optimization, and turning AI research into scalable, production-ready solutions across voice