Applied AI Engineer

ONEBYZERO PTE. LTD.; Singapore; On-site; SGD 120,000 - 190,000; Full time

Job summary

ONEBYZERO PTE. LTD. seeks a Deep Learning Architect with 4+ years of experience to design production-grade GenAI systems in Singapore. You will shape end-to-end LLM architectures, RAG pipelines, and multi-agent setups with a strong emphasis on reliability and performance.

You will review designs, optimize models for latency and cost, and collaborate with engineering, data, product, and client teams to deliver high-impact GenAI solutions on tight timelines, with hands-on coding required.

Qualifications

• 3–6 years in ML engineering or model development roles.
• Hands-on CPT/SFT/LoRA/QLoRA on LLMs.
• Strong Python, production-ready code.
• Experience with model evaluation pipelines.
• Cloud deployment with cost and latency awareness.
• Strong problem-solving and independent work.
• Review designs and communicate trade-offs clearly.

Responsibilities

• Design end-to-end LLM system architecture for production use cases.
• Pre-train, fine-tune LLMs and domain-specific models.
• Design and run evaluation pipelines to benchmark performance and cost.
• Optimize models for latency, throughput, and token efficiency in production.
• Integrate fine-tuned models into multi-agent pipelines.
• Define enterprise integration patterns for GenAI systems.
• Collaborate with cross-functional teams to deliver high-impact solutions.
• Contribute hands-on code and raise engineering standards.

Skills

ML engineering

LLMs

Python

CI/CD

Tools

Bedrock/OpenSearch

Weaviate/Milvus

Docker/Kubernetes

Job description

About the Role

We are seeking a Deep Learning Architect with 4+ years of experience to help design and build production-grade GenAI systems. In this role, you will contribute architecture coverage across the team—reviewing system designs, identifying gaps, and guiding technical decisions at the solution level. You will work on end-to-end LLM system design, Retrieval-Augmented Generation (RAG) pipelines, and multi-agent architectures, with a strong focus on production readiness. Strong coding depth is non-negotiable.

Responsibilities

• Design and contribute to end-to-end LLM system architecture for real-world enterprise use cases (from requirements to production).
• Pre-train, fine-tune LLMs and domain-specific models using techniques such as CPT, SFT, LoRA, and QLoRA for client-specific use cases.
• Design and run model evaluation pipelines to benchmark performance, accuracy, and cost across different fine-tuning approaches.
• Optimise models for latency, throughput, token efficiency, and inference cost in production environments.
• Work alongside agent orchestration and architecture teams to integrate fine-tuned models into multi-agent pipelines.
• Implement prompt versioning, rollback strategies, and model monitoring to ensure reliability post-deployment.
• Translate business requirements from client engagements into model adaptation strategies with clear success criteria.
• Contribute to internal knowledge sharing on fine-tuning best practices, tooling, and emerging techniques.
• Define enterprise integration patterns for GenAI systems (identity/access controls, auditability, data boundaries, governance, and compliance alignment).
• Improve production reliability: latency/throughput optimization, token efficiency, cost control, and robust failure handling.
• Collaborate with cross-functional stakeholders (engineering, data, product, client teams) to deliver high-impact solutions on tight timelines.
• Contribute hands-on code, perform code reviews, and raise the engineering bar through strong software fundamentals.

Qualifications

• 3–6 years of experience in ML engineering, LLMs, or model development roles.
• Hands-on experience with Continual Pre-training (CPT), Supervised Fine-tuning (SFT), LoRA, or QLoRA on LLMs.
• Strong Python programming skills—ability to write clean, testable, production-ready code.
• Experience running model evaluation and benchmarking pipelines in a structured way.
• Solid understanding of transformer architectures and how fine-tuning affects model behaviour.
• Experience deploying fine-tuned and pre-trained models to cloud environments with attention to cost and latency.
• Strong problem-solving skills with the ability to work independently on client-facing projects.
• Solid software engineering fundamentals: APIs, data structures, testing, debugging, and performance optimization.
• Ability to review designs, communicate trade-offs clearly, and collaborate effectively in a fast-paced environment.

Required Skills

• Experience with AWS-native GenAI building blocks (e.g., Bedrock, OpenSearch, Lambda, ECS/EKS) and secure enterprise deployments.
• Experience with vector databases/search engines (OpenSearch, Pinecone, Weaviate, Milvus, FAISS) and retrieval optimization.
• Experience with containerization and orchestration (Docker, Kubernetes).
• Experience building evaluation/observability pipelines for LLM systems and implementing safety/guardrail patterns.
• Consulting or client-facing delivery experience.