Full Stack & AI Development Engineer (Web/App/Algorithm Track)

Sealincloud Technology | 1StepHub; Hong Kong; On-site; HKD 90,000 - 120,000; Full time

Job summary

Sealincloud Technology is seeking a Full Stack & AI Development Engineer to join our R&D team. This role covers web/app platforms and proprietary AI algorithms, spanning front-end, back-end, and AI-driven modules.

You will help turn our patents into scalable consumer products, collaborating with design and engineering teams to deliver high-performance, low-latency software with robust, maintainable code.

Qualifications

• Proficiency with Next.js or React.js for SEO/GEO rendering.
• Experience with Node.js (NestJS/Express) or Python (FastAPI/Flask).
• Familiarity with PostgreSQL/MySQL/MongoDB.
• Experience with AI/NLP/LLM tools is a strong asset.
• BS in Computer Science, Software Engineering, or related field.

Responsibilities

• Platform Development: build, upgrade, and maintain multi-domain portals and cross‑platform WebApps.
• UI/UX Implementation: translate wireframes into responsive, high‑performance pages.
• AI & Feature Integration: implement onboarding, multi‑turn dialogues, and automated service dispatching.
• Algorithm R&D: support research, optimization, and integration of personalization models.
• Engineering Excellence: participate in sprints, testing, debugging, and version control.

Skills

Front-end Mastery

Backend & API Design

Database Management

AI/LLM Stack

Algorithm Knowledge

Education

Bachelor's degree in Computer Science or Software Engineering

Job description

Role Description

As a Full Stack & AI Development Engineer, you will join our dynamic R&D team to design, build, test, and optimize our core web/app platforms and proprietary AI algorithms. The role spans web & app front-end, high-performance backend logic, and AI-driven recommendation/routing modules, depending on your skill focus. You will be instrumental in turning our innovative patents into scalable, real-world consumer products.

Key Responsibilities

• Platform Development: Spearhead the building, upgrading, and maintaining of the company's multi-domain portals and cross-platform WebApps.
• UI/UX Implementation: Collaborate closely with the design team to convert wireframes into responsive, high-performance, and pixel-perfect interactive pages.
• AI & Feature Integration: Implement interactive features for user onboarding, multi-turn dialogue interfaces, and automated service dispatching.
• Algorithm R&D (If applicable): Support core algorithm research, optimization, and integration, including task profiling, intelligent service matching, and digital personalization models.
• Engineering Excellence: Participate in team sprints, rigorous software performance testing, debugging, and Git-based version control to ensure system reliability and low latency.

Qualifications & Requirements

Core Technical Skills

• Front-end Mastery: Proficiency in modern front-end frameworks, with a strong preference for Next.js or React.js (to support SEO/GEO rendering).
• Backend & API Design: Solid understanding of backend logic and RESTful API development using Node.js (NestJS/Express) or Python (FastAPI/Flask).
• Database Management: Familiarity with database design and query optimization (e.g., PostgreSQL, MySQL, or MongoDB).

AI & Bonus Capabilities (Highly Valued)

• AI/LLM Stack: Hands-on experience or deep interest in AI/NLP/LLM tools (e.g., LangChain, OpenAI API, LlamaIndex, or Vector Databases).
• Algorithm Background: Knowledge of Machine Learning frameworks and data analysis is a strong asset.

Education & Soft Skills

• Education: Bachelor's degree or higher in Computer Science, Software Engineering, or a related field.
• Mindset: Strong problem-solving skills, analytical thinking, and the adaptability required to thrive in a fast-paced, agile startup environment.
• Language: Proficiency in English and Mandarin, with Cantonese being a valuable asset for cross-border collaboration.