Founding AI Infrastructure Engineer (Equity, Hybrid)

A-Field Tech; Hong Kong; Hybrid; HKD 800,000 - 1,200,000; Full time

Benefits offered by this job

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Job summary

A-Field Tech Limited in Hong Kong is building the next layer of AI infrastructure, focusing on intelligent routing, model evaluation, and reliable developer tooling for a live platform.

You will work on applied AI research and software engineering to ship production features, with opportunities to own components and influence architectural decisions.

Join a founding team in a fast-growing company and help shape regional AI capabilities across Asia.

Qualifications

• Experience with applied research, experimentation, data analysis, AI systems, or complex technical products.
• Familiarity with Python, TypeScript, JavaScript, Go, or a similar language.
• Understanding of APIs, databases, asynchronous systems, cloud infrastructure, or distributed services.
• Ability to turn an unclear problem into a hypothesis, experiment, measurable result, and practical implementation.
• Strong analytical thinking and attention to reliability and reproducibility.
• Curiosity about large language models, model evaluation, routing, and AI infrastructure.
• Ownership mindset and comfort working in an early-stage company.

Responsibilities

• Research and prototype intelligent model-routing strategies
• Build evaluation and benchmarking tools for quality, cost, latency, and reliability
• Develop fallback, retry, caching, observability, and quota-management systems
• Investigate how prompts and task requirements can be matched to suitable models
• Build experiments, simulations, datasets, and reproducible test harnesses
• Integrate new model providers and standardise different APIs and capabilities
• Turn validated research into reliable production features
• Document findings, limitations, and technical recommendations clearly

Skills

Software engineering

Applied research

Data analysis

Python

TypeScript

JavaScript

Go

APIs

Databases

Distributed systems

Education

Bachelor's degree in CS

Job description

A-Field Tech Limited in Hong Kong is building the next layer of AI infrastructure, focusing on intelligent routing, model evaluation, and reliable developer tooling for a live platform.

You will work on applied AI research and software engineering to ship production features, with opportunities to own components and influence architectural decisions.

Join a founding team in a fast-growing company and help shape regional AI capabilities across Asia.