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About this role

We are looking for a Senior Full Stack Engineer (React, Node & AI) who is passionate about technology, performance, and building exceptional user experiences.
You will join a global, distributed engineering team working on the core of our platform, where much of our users’ content is created. Stability, performance, scalability, and reliability are essential to everything we build.
Software engineering is evolving rapidly. We are looking for someone who is not only a strong and experienced engineer, but who also knows how to use AI agents and AI-assisted workflows effectively in their daily work.
You should be comfortable using AI to accelerate development, investigate complex problems, manage large amounts of context, and work across multiple streams while maintaining a high standard of quality.

What You’ll Do

• Build and deliver end-to-end features that support our recording and live-call experiences.
• Design, maintain, and evolve scalable services, APIs, and product architecture.
• Prototype ideas quickly, iterate based on feedback, and deliver meaningful product impact.
• Collaborate closely with Product, Design, Growth, and Engineering teams to continuously improve the user experience.
• Use data, monitoring, observability, and investigation tools to support technical and product decisions.
• Use AI tools and agents throughout the engineering lifecycle, including coding, architecture, debugging, troubleshooting, testing, documentation, technical investigation, and code review.
• Manage multiple AI-assisted tasks or agents in parallel by delegating effectively, preserving context, validating outputs, and integrating results into production-quality solutions.
• Make pragmatic engineering decisions that balance delivery speed with maintainability, scalability, performance, and reliability.
• Contribute to the continuous improvement of our engineering practices, internal tools, automation, and AI-assisted workflows.

Your skills and experience

• Excellent English communication (equivalent to C1 or IELTS 7.0), collaboration, and teamwork skills.
• Core Tech Stack Proficiency: 8+ years of software development experience with deep expertise in TypeScript, React, Node.js/Nest.js, and RESTful APIs.
• Senior Backend Depth (Crucial): Comfortable in a 4–5/5 self-assessment on backend concepts to be competitive.
• Event-Driven Architecture & Databases: Deep expertise in NoSQL data modeling, message brokers (Kafka), and operating self-hosted MongoDB with replica sets and sharding.
• High-Concurrency & Real-Time Systems: Proven experience with WebSockets / at scale and horizontal scaling strategies.
• AI-Native Engineering Mastery:
  • Able to orchestrate multiple AI agents and context-switch across concurrent tasks in daily development.
  • Practical experience with agent memory / persistent-context tooling and structured onboarding docs (e.g., -style agent context files).
  • Strong fluency using AI as a daily engineering multiplier — for coding, architecture, troubleshooting, investigation, test creation, documentation, and code review.
• Engineering Judgment: Degree in Computer Science or equivalent real-world experience, with a continuous improvement mindset and strong product/technical judgment.
• Distributed Team & Communication: Proven experience working in remote teams with excellent communication and teamwork in English.
• Experienced with WebSockets, WebRTC, MediaStream, and browser APIs for audio/video.

Why you’ll love working here

• Competitive salary: Up to USD 4500 gross (SHUI: 50%)
• Work Location: Flexible. This role is open to hybrid or fully remote arrangements for candidates from anywhere in Vietnam.
• An open mind and flat structure where every voice is welcome.
• A work environment built on transparency, seamless communication, trust, and a sensible approach,combined with mixed cultures and a speaking environment
• Individual assessments every 6 weeks with your line manager
• Performance review every 6 months
• 15 days of annual leave and + 6 days of fully paid sick leave per year – can be used for the care of sick child
• Christmas Holiday
• Working hours: 1:00 PM – 10:00 PM (Mon-Fri)
  

Intreview Process: 3 online rounds (HR Interview – Technical Interview with VN team – Technical with UK Client)