Software Developer I (Full Stack / Backend) at WATI.io – Hong Kong | Jobyssey

Wati is the world's leading WhatsApp-first conversational growth platform, empowering businesses to build deeper customer relationships and accelerate revenue growth. Trusted and loved by over 14,000 customers across 100+ countries, Wati has established itself as the premier choice for businesses leveraging WhatsApp and other messaging channels to connect with customers on their platform of choice.In a world where real-time interactions drive growth, Wati's story is all about business growth through conversations.

At Wati, we believe that every conversation matters, whether it's engaging a first-time prospect, nurturing a qualified lead, or deepening relationships with loyal clients. We transform these conversations into opportunities for building relationships, and strong relationships lead to increased revenue.

Our Platform

The AI-native platform simplifies complex business operations by bringing all customer interactions under one intelligent roof. Designed for scalability and ease of use, our solution delivers a measurable ROI while adapting to businesses of all sizes, from emerging startups to established enterprises.

Our Backing & Partnerships

Wati is proudly backed by world-class investors including Tiger Global, Sequoia Capital, DST Global, and Shopify. As a Premier-tier Partner of Meta, Google, and WhatsApp, we maintain the highest standards of integration and platform excellence.

About the Role

We’re looking for a Software Engineer I to build and maintain backend services and APIs that power WATI’s SaaS platform. You’ll collaborate with cross-functional teams to deliver new features, ensure system reliability, and continuously improve performance and deployment efficiency.

Key Responsibilities

Develop, test, and maintain backend services and APIs that power WATI’s SaaS platform and WhatsApp Business solutions.
Work closely with frontend, mobile, and product teams to deliver new features and improvements efficiently.
Write clean and maintainable code, and contribute to system design discussions and code reviews.
Help troubleshoot, debug, and optimize performance across different components.
Support continuous improvement in development workflow, CI/CD, and deployment processes.
Keep up to date with new technologies and suggest ideas to enhance product performance and scalability.

Requirements

Bachelor’s degree or above in Computer Science, Engineering, or related field.

Around 3–5 years of experience in backend or full stack development.
Required: Experience with backend development using C# or Golang.
Familiarity with databases (SQL or NoSQL) and RESTful APIs ; experience with MongoDB or PostgreSQL is a plus.
Basic understanding of version control (Git) and cloud deployment (AWS / GCP / Azure).
Nice to have: Exposure to frontend development using JavaScript or TypeScript is a plus.
(Optional) Familiarity with frontend frameworks like React, React Native, etc. would be an advantage.
A proactive learner who enjoys solving problems collaboratively in a fast-paced environment.

Benefits

Be part of a diverse, globally distributed team.
Enjoy a collaborative, transparent, and empowering culture.
Competitive compensation and flexible working arrangements.
Work at the forefront of SaaS innovation and make real impact.

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