Full-Stack Product Engineer

The Flex; Hong Kong; On-site; HKD 70,000 - 100,000; Full time

Benefits offered by this job

Massive ownership over product decisions

Remote-first work environment

High growth opportunities

Job summary

The Flex is looking for a Full‑Stack Product Engineer in Hong Kong to innovate and build products that impact thousands of users globally. You will work at the intersection of product and engineering, taking concepts to production while automating workflows.

You should possess strong full-stack development experience and a product mindset, with the ability to work independently. This remote-first role offers massive ownership and the chance to learn rapidly in a high-growth environment.

Qualifications

• Strong full‑stack development experience.
• Experience building production‑grade web applications.
• Strong understanding of APIs and databases.

Responsibilities

• Build products end‑to‑end, from concept to production.
• Own customer problems and transform them into software solutions.
• Design systems that eliminate manual work.

Skills

Full-stack development experience

Building production-grade web applications

Understanding of APIs and databases

Strong problem-solving skills

Excellent written communication

Tools

FastAPI

React

TypeScript

AWS

PostgreSQL

Job description

At The Flex, we believe renting a home should be as simple as booking a ride.

Our mission is to enable anyone to live anywhere, anytime, without friction.

Powered by Base360.ai, our proprietary technology platform, we are building the operating system for modern renting—automating operations, connecting systems, and creating seamless experiences for guests, landlords, and operators worldwide.

We're looking for a Full‑Stack Product Engineer who thrives at the intersection of product, engineering, and execution.

This isn't a role where you'll simply implement tickets.

You'll identify problems, design solutions, build products, automate workflows, and help shape the future of the platform.

What You'll Do

• Build Products End‑to‑End — Take ideas from concept to production by designing, building, testing, and launching features that create measurable business impact.
• Own Customer Problems — Work directly with founders and operational teams to understand challenges and transform them into elegant software solutions.
• Move Fast — Ship quickly, gather feedback, iterate, and continuously improve products based on real‑world usage.
• Create Automation — Design systems that eliminate manual work and allow the company to scale efficiently.
• Build Internal Tools — Develop operational dashboards, workflow engines, management platforms, and AI‑powered tools used across the business.
• Connect External Systems — Build integrations with platforms such as Airbnb, Stripe, Hostaway, Twilio, Google, and OpenAI.
• Leverage AI — Implement AI‑powered features and workflows that improve productivity, decision‑making, and customer experience.
• Scale the Platform — Ensure systems remain reliable, secure, and scalable as the business grows internationally.

Tech Stack

• Python
• FastAPI
• React
• TypeScript
• Supabase
• PostgreSQL
• AWS
• OpenAI APIs
• Stripe
• Twilio
• GitHub Actions

You don't need experience with every technology listed above, but you should be capable of learning quickly and adapting.

What We're Looking For

Must-Have

• Strong full‑stack development experience
• Experience building production‑grade web applications
• Strong understanding of APIs and databases
• Product mindset and user‑centric thinking
• Ability to work independently and take ownership
• Strong problem‑solving skills
• Excellent written communication

Nice‑to‑Have

• Experience with FastAPI
• Experience with React and TypeScript
• Experience with AI tools or LLM integrations
• Startup experience
• PropTech, marketplace, or SaaS experience

What Success Looks Like

Within Your First Year

• You've launched multiple high‑impact features
• Manual operational processes have been automated
• Product development cycles are significantly faster
• AI‑powered workflows have been deployed across the business
• Base360.ai has become a stronger competitive advantage for The Flex

Why Join The Flex

• Massive Ownership — You'll have direct influence over product decisions, architecture, and company strategy.
• Build Real Products — Your work will impact thousands of users and properties across multiple countries.
• Learn at Startup Speed — You'll work closely with founders and gain exposure to engineering, product, operations, AI, and business.
• Remote‑First — Work from anywhere.
• High Growth Environment — We're building quickly and looking for people who want to grow alongside the company.

This Role Is Not For You If

• You prefer highly structured corporate environments
• You only want to write code from predefined specifications
• You avoid ownership outside your immediate responsibilities
• You are uncomfortable moving quickly and adapting to change

If you love building products, solving real‑world problems, and creating systems that scale, we'd love to hear from you.