Full-Stack AI Engineer: React Native, RAG Pipelines

Blockchain Solutions Limited; Hong Kong; On-site; HKD 420,000 - 650,000; Full time

Benefits offered by this job

5-day Work Week

Flexible Working Hours

Medical Insurance

Public Holiday & Annual Leave

Mandatory Provident Fund Contribution

Job summary

Blockchain Solutions Limited in Hong Kong is seeking a capable full-stack developer to build end-to-end features for web portals and mobile apps using React Native.

You will work on backend APIs with Node.js/TypeScript, integrate payment systems, and contribute to AI workflows including RAG pipelines and MCP tooling, while collaborating with designers and product managers in an agile environment.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, Software Engineering, or a related discipline.
• Minimum 2–3+ years of professional hands-on full-stack software development experience.

Responsibilities

• Full-Stack and Mobile Development. Build and maintain end-to-end features across web platforms (customer portals, admin tools) and mobile apps (React Native for iOS and Android).
• Cross-Functional Collaboration. Collaborate with UI/UX designers, project managers, and stakeholders to deliver intuitive, high-impact products.
• Backend and API Architecture. Design, build, and maintain scalable RESTful APIs using Node.js (TypeScript) and Python.
• Payment and System Integrations. Implement payment gateway integrations (billing, subscriptions, invoicing) and third-party services (SSO, messaging, webhooks).
• AI and LLM Engineering. Integrate LLMs, build RAG pipelines, and develop AI workflows and MCP tooling.
• Database and DevOps. Design and optimize databases (PostgreSQL, MongoDB) while maintaining code quality through automated testing and Docker CI/CD pipelines.

Job description

Blockchain Solutions Limited in Hong Kong is seeking a capable full-stack developer to build end-to-end features for web portals and mobile apps using React Native.

You will work on backend APIs with Node.js/TypeScript, integrate payment systems, and contribute to AI workflows including RAG pipelines and MCP tooling, while collaborating with designers and product managers in an agile environment.