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Blockchain Solutions Limited

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Software Engineer (Full Stack) - ECommerce / AI

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Summary

Full-stack engineer building e-commerce web platforms and React Native mobile apps end to end, with Node.js/TypeScript and Python REST APIs, PostgreSQL/MongoDB, Docker CI/CD and cloud deployment, plus hands-on AI work (LLM integrations, RAG pipelines, AI agents, MCP tooling), based in Hong Kong.

JOB HIGHLIGHTS

  • Dynamic Industry. A unique opportunity in the fast-growing e-commerce and AI innovation space.
  • True End-to-End Ownership. Full-stack development spanning web platforms, mobile apps (React Native), backend APIs, and cloud deployment.
  • Modern AI Engineering. Hands-on experience building RAG pipelines, AI agents, and Model Context Protocol (MCP) tooling.

KEY 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 REQUIREMENTS

Education and Core Experience

  • 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.

Frontend and Mobile

  • Proficient in modern JavaScript/TypeScript and frontend frameworks: React.js, Next.js, or Vue.js, alongside modern HTML5 and CSS3.
  • Hands-on experience in cross-platform mobile development with React Native, including mobile app build and store launch (iOS / Android).

Backend and Databases

  • Proficient in backend development with Node.js (TypeScript) / Nest.js / Express.js; working knowledge of Python is an advantage.
  • Solid understanding of relational and non-relational databases (PostgreSQL, MongoDB).
  • Experienced with ORM and query-builder tools such as Prisma, TypeORM, or Sequelize.

AI Engineering and DevOps

  • Practical knowledge of AI engineering: RAG pipelines, vector search, LLM integrations, AI agents, or MCP architecture.
  • Hands-on familiarity with Docker, containerized workflows, and cloud deployment platforms (AWS / GCP / Cloudflare).
  • Comfortable with developer toolchains: GitLab / GitHub, Figma, Jira, and ClickUp.

Languages and Soft Skills

  • Proficient in written and spoken Cantonese (native), English, and Mandarin.
  • Strong analytical, debugging, and problem-solving mindset with high attention to detail.
  • A collaborative team player with a proactive attitude who thrives in an agile, fast-paced environment.

Our Benefits

  • 5-day Work Week
  • Flexible Working Hours
  • Medical Insurance
  • Public Holiday & Annual Leave
  • Mandatory Provident Fund Contribution

Skills

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See also

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