Principal JS Engineer

LinkedIn|DTalent Human Services Consulting|Vietnam|4 Aug 2026
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JOB DESCRIPTION

PRINCIPAL JAVASCRIPT ENGINEER

Domain: Fintech (Sing Client)

Range: Upto 130 gross

Contact: Thuypham@dtalent.vn


As a Principal JavaScript Engineer , you will work closely with Product, Design, and Engineering leadership to set technical direction, architect robust AI-first solution s, and deliver reliable, maintainable software. You will also play an important role in integrating AI in a thoughtful and pragmatic way across our products and internal workflows.


YOUR RESPONSIBILITIES

  • Design and deliver high-quality, secure, and scalable engineering solutions
  • Apply AI in practical and impactful ways to automate and enhance customer workflows
  • Build and operate systems capable of supporting advanced AI workloads at scale
  • Uphold strong engineering standards, including testing, code quality, and long-term maintainability
  • Communicate clearly and collaborate across teams to ensure alignment and predictable delivery
  • Provide mentorship and technical leadership, helping elevate the broader engineering organization


REQUIREMENTS

  • 9+ years of full-stack engineering experience, including leading the delivery of complex systems
  • Be fluent in English communication skills (at least C1 level)
  • 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


NICE TO HAVE

  • Experience in FinTech , particularly in domains such as accounting or bookkeeping


BENEFITS:

  • Full-time insurance follow VN Labor laws
  • Work equipment support.
  • Annual bonus, performance-based bonus.
  • Monthly compensation package to help you work and live better, remotely!
  • Fully support for exams to get Certification and skills improvement training.
  • Receive 22 paid leaves on your 5th years. We encourage you to take one month off work.
  • Opportunities for professional development and career advancement with monthly coaching.
  • A dynamic and innovative team that values creativity and collaboration.


WORKING TIME: From Monday to Friday (8 hours/day) - VN time

WORKING TYPE: Remote fulltime - Will not accept candidates who want to find second job


HIRING PROCESS: All interviews will be conducted online (Google Meet or Slack)

  1. Technical interview with Engineering Manager and Head of People
  2. Take home assessment from the client
  3. 90-minute with the client's hiring manager
  4. 30-minute interview with the client’s CTO
  5. Offer discussion with Co-founder