Senior AI Engineer (Agents & Applications)

Firmus Technologies; Singapore; On-site; SGD 180,000 - 260,000; Full time

Job summary

Firmus Technologies in Singapore invites a Senior AI Engineer (Agents & Applications) to design, build, and operate production-grade agentic systems aligning AI-factory planning with the design-build-operate lifecycle.

You will define architectures for single- and multi-agent workflows, implement orchestration, and integrate model endpoints and telemetry to enable safe, explainable, and measurable decision-making across the enterprise AI platform.

Qualifications

• Experience designing agentic systems for AI factories.
• Strong background in distributed architectures and data pipelines.
• Proactive problem solving and clear communication.

Responsibilities

• Design, build, and operate agentic applications for AI-factory planning and execution.
• Define reference architectures for single- and multi-agent workflows.
• Build orchestration workflows using named frameworks and libraries.
• Select architectures tailored to use cases beyond default multi-agent patterns.

Skills

System design

Distributed systems

Problem solving

Tools

LangGraph

LangChain

LlamaIndex

Microsoft AutoGen

Semantic Kernel

CrewAI

PydanticAI

Haystack

DSPy

Job description

Firmus Technologies

Firmus Technologies is a global leader pioneering the development and operation of efficient AI infrastructure across Asia Pacific.

Founded in Australia in 2019, our mission is to create the most efficient AI infrastructure by combining cutting-edge technology with a steadfast commitment to sustainability.

At Firmus, we are unique in our approach. We design, build, and operate a new class of digital infrastructure - the AI Factory. Through our model-to-grid technology approach, we have pushed the boundaries of multi-generational liquid cooling systems, energy management, AI software orchestration, and construction. For our customers, this approach allows us to make every watt count and deliver low-cost AI tokens globally.

Firmus AI Cloud

Our large-scale GPU cloud platform, Firmus AI Cloud, is purpose-built to deliver energy-efficient AI compute at scale to customers.

It empowers developers, enterprises, educational institutions, and government users to train and deploy AI models with unmatched efficiency and cost savings. With an ever-growing suite of services and applications, we are committed to delivering a cloud experience that is market-leading, proprietary, and built to scale.

Why Firmus?

As an NVIDIA Cloud and Engineering partner in Asia Pacific, you will gain skills, experience, and exposure across the AI industry and be part of shaping what this industry looks like for decades to come.

We are founder-led, not a big corporate. Decisions happen fast, our leaders are accessible, and there's minimum bureaucracy between you and the work. Ownership comes early. Whatever your role, you will have a direct line to outcomes, helping shape how the business grows as we scale nationally across a long-term, large-scale roadmap.

Work alongside founders and experts in AI infrastructure, energy systems and next-generation compute.

What we build here has impact beyond the business. Our AI Factories are designed to operate as assets to the energy grid to actively strengthen the communities and regions they operate in rather than drawing from them.

Role Summary

The Senior AI Engineer (Agents & Applications) will design, build, and operate production-grade agentic systems that coordinate, optimize, and automate decision-making across the design-build-operate lifecycle of AI factories. The role is a core contributor to the AI & Applications team's Model-to-Grid product, connecting models, inference endpoints, benchmark intelligence, validated workload recipes, job-scheduler decisions, infrastructure telemetry, AI-factory operations, and grid-related constraints into safe, explainable, and measurable workflows.

The role will build more than conversational co-pilots. It will create agentic applications that ingest and reason over time-series telemetry, logs, traces, events, scheduler state, benchmark results, configuration data, operational documentation, incident records, and multimodal sources where appropriate. These applications will help engineers, operators, and customers move from observation to diagnosis, recommendation, planning, simulation, controlled execution, verification, and continuous improvement.

The engineer will define and implement the underlying agent architecture and engineering framework: orchestration, state and memory management, retrieval, tool use, specialized sub-agents, evaluation, safety controls, human approvals, observability, and deployment. The role will use fit-for-purpose self-hosted and external model endpoints, with close integration to the team's inference platform.

Key Responsibilities

• Design, build, and operate agentic applications supporting AI-factory planning, commissioning, validation, workload onboarding, benchmark analysis, model and recipe optimisation, scheduling, operations, maintenance, incident response, and continuous improvement.
• Define reference architectures for single-agent, multi-agent, workflow-based, eventdriven, and human-in-the-loop agentic systems.
• Build orchestration workflows using appropriate agent frameworks and libraries, such as LangGraph, LangChain, LlamaIndex, Microsoft AutoGen, Semantic Kernel, CrewAI, PydanticAI, Haystack, DSPy, or equivalent custom-built frameworks.
• Select the appropriate architecture for each use case rather than applying multi-agent patterns by default:
  • Deterministic workflow and state-machine architectures for repeatable, high-confidence operational processes.
  • Planner-executor architectures for decomposing complex investigation, planning, and remediation tasks.
  • Supervisor-worker or manager-worker architectures for coordinating specialist domain agents.
  • Router architectures for selecting the right model, tool, knowledge source, workflow, or specialist agent.