Principal JavaScript Engineer (Node.js/React)
RemoteVietnam
Job Summary
Design and deliver high-quality, secure, and scalable engineering solutions by applying AI to automate and enhance customer workflows. Build and operate systems supporting advanced AI workloads at scale while upholding strong standards for testing, code quality, and long-term maintainability. Contribute to architectural design, participate in code reviews, and troubleshoot complex technical issues. Provide mentorship and technical leadership to elevate the broader engineering organization. Collaborate across Product, Design, and Engineering teams to ensure alignment and predictable delivery. Stay current with JavaScript, AI, and cloud computing trends.
Required Qualifications
- 9+ years of full-stack engineering experience, including leading the delivery of complex systems.
- Fluent in English communication skills.
- Demonstrated success building and shipping production-grade applications in SaaS, B2B, FinTech, or similar environments.
- Hands-on experience developing and integrating AI-powered features such as LLM-based automation, classification, document processing, or workflow enhancements.
- Working knowledge of AI development and evaluation tools, including vector search, embeddings, prompt frameworks, or AI-assisted development tools.
- Strong proficiency in JavaScript and TypeScript.
- Solid experience with modern backend technologies (Node.js; NestJS is a plus) and frontend frameworks (React or Vue).
- Strong experience with relational databases (Postgres or MySQL), NoSQL databases (MongoDB), and ORMs such as TypeORM and Mongoose.
- Experience designing scalable architectures, APIs, and services with strong testing and observability practices.
- Good understanding of cloud platforms (AWS preferred), CI/CD pipelines, and DevOps fundamentals.
- Excellent communication skills and experience working closely with Product, Design, and QA teams.
- A proven history of mentoring engineers and improving engineering quality across teams.
Desired Qualifications
- NestJS
- Vue
- MongoDB
- TypeORM
- Mongoose
- Postgres
- MySQL
- AWS
- CI/CD pipelines
- DevOps fundamentals
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