Product Engineer, AI Email App: Build Reliable AI Workflows

ActAI; Singapore; On-site; SGD 120,000 - 160,000; Full time

Job summary

ActAI is seeking a Product Engineer for its AI Email App to bridge user needs, model capability, and engineering constraints. You will collaborate with ML and engineering teams to shape system behavior, measurement, and continuous improvement.

This is a deeply technical, hands-on role where you will understand the system, challenge technical decisions, and own product quality end-to-end, including reliability and user trust.

Qualifications

• Strong computer science fundamentals and system design skills.
• Solid understanding of modern ML and how AI systems behave in production.
• Comfortable reading technical designs, understanding architectures, and engaging deeply with engineers.
• Strong intuition for model limitations, hallucinations, evaluation, and failure modes.

Responsibilities

• Define end-to-end requirements for AI capabilities, from model behavior to system behavior to user experience.
• Translate model capabilities, evaluation results, and technical constraints into clear product and system decisions.
• Make trade-offs across quality, latency, cost, reliability, safety, and UX.
• Work closely with ML, backend, and client engineers on system design, evaluation, and iteration.
• Define and evolve evaluation frameworks across offline metrics, online experiments, and human feedback.
• Establish clear quality bars and feedback loops for AI-powered experiences.
• Drive execution through clear specifications, prioritization, and strong technical judgment.
• Identify failure modes and ensure AI systems behave predictably and recover gracefully.
• Own product quality end-to-end, correctness, reliability, usefulness, and user trust.

Job description

ActAI is seeking a Product Engineer for its AI Email App to bridge user needs, model capability, and engineering constraints. You will collaborate with ML and engineering teams to shape system behavior, measurement, and continuous improvement.

This is a deeply technical, hands-on role where you will understand the system, challenge technical decisions, and own product quality end-to-end, including reliability and user trust.