Location: Hong Kong / flexible hybrid arrangement

Company: A-Field Tech Limited

Type: Founding-team, full-time role

Help build the intelligence layer for AI infrastructure in Asia

A-Field Tech Limited is a Hong Kong-based AI and network infrastructure company. We are building a stable regional AI gateway (www.nexllm.ai) to leading AI models. Our live platform gives developers one interface for accessing 51 models across Claude, OpenAI, Gemini, Qwen, DeepSeek, and other providers.

We are now developing the next layer: intelligent routing, model evaluation, reliability tooling, and developer infrastructure that helps applications choose and operate the right model for each task.

We are looking for a Founding AI R&D Engineer to help turn research ideas into working systems.

What You Will Work On

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

The role combines applied AI research, software engineering, distributed systems, and product development. You will work on real technical problems affecting a live platform, not a purely theoretical research project.

What We Are Looking For

Strong software engineering fundamentals
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

A degree in computer science, AI, machine learning, software engineering, data science, or a related field is helpful. Strong projects, research experience, publications, open-source work, or equivalent practical experience are also welcome.

You do not need prior experience building an AI gateway. We care about your ability to learn unfamiliar systems, investigate difficult questions, and build useful solutions.

Why join A-Field Tech/NexLLM

Join while the core R&D direction is still being shaped
Work directly with the founder and have visible technical ownership
Build systems used by developers and AI teams across Asia
Work at the intersection of AI models, routing, evaluation, reliability, and developer tools
Help establish a regional technical capability in AI infrastructure
Receive a competitive salary and share-option opportunity, subject to formal scheme terms

How To Apply

Please send the following to info@a-fieldtech.com:

CV, LinkedIn, GitHub, portfolio, or examples of technical work
A short note explaining your interest in NexLLM and AI infrastructure research
One example of a technical or research problem you investigated and what you learned

Subject: Founding AI R&D Engineer / Developer application — [Your Name]

A-Field Tech/NexLLM welcomes applicants from diverse backgrounds who are excited to help build the next generation of AI infrastructure in Asia.

A-Field Tech jobs

Founding AI R&D Engineer — AI Infrastructure & Model Routing

Never Miss a New Opportunity