Senior AI Systems Architect - Multi-Model Routing

SIGNALPLUS SG PTE. LTD.; Singapore; On-site; SGD 180,000 - 300,000; Full time

Job summary

SIGNALPLUS SG PTE. LTD. seeks a Senior AI Systems Engineer to design systems that compare, select, and run multiple foundation models in production.

You will define evaluation standards, translate results into routing strategies, and build platforms to optimize model quality, latency, cost, and reliability. Responsibilities include developing model-routing strategies, dynamic model selection, and scalable multi-model architecture to support production-grade AI services with strong observability

Qualifications

• Hands-on experience building production AI, machine-learning, or distributed systems.
• Demonstrated experience in model routing, dynamic model selection, model arbitration, ensemble systems, or multi-model decision systems.
• Experience designing evaluation frameworks, benchmark datasets, scoring methodologies, regression pipelines, or continuous evaluation systems.
• Strong understanding of the trade-offs among model quality, latency, inference cost, reliability, and operational risk.
• Experience integrating and operating multiple foundation models, including third-party APIs, self-hosted models, or open-source models.
• Ability to translate ambiguous requirements into measurable evaluation criteria, technical designs, and production systems.
• Strong analytical and problem-solving skills, with the ability to validate technical decisions using data and experiments.

Skills

Model routing

Dynamic model selection

Ensemble systems

Evaluation frameworks

Distributed systems

LLM evaluation

AI safety

Job description

SIGNALPLUS SG PTE. LTD. seeks a Senior AI Systems Engineer to design systems that compare, select, and run multiple foundation models in production.

You will define evaluation standards, translate results into routing strategies, and build platforms to optimize model quality, latency, cost, and reliability. Responsibilities include developing model-routing strategies, dynamic model selection, and scalable multi-model architecture to support production-grade AI services with strong observability