Back End Software Engineer at SendBird
Seoul, KR

The engineering team at SendBird is solving some of the biggest challenges related to building a reliable, feature-rich, and scalable real-time conversational experiences across different platforms.

The challenges range from building a platform that can scale to some of the largest userbase across distributed environments with optimal latency, creating a feature-rich, yet lightweight and high performance client-side SDK, and building products and services that can help customers incorporate real-time conversational technologies more rapidly.

You will be participating in building the best real-time conversational products and solutions possible. You are expected to learn and expand on your engineering knowledge and experiences to build a world-class product that solves difficult problems of our customers, and make it as easy as possible for the customers to harness the power of real-time chat.


Design and implement backend RESTful API of SendBird website, dashboard, and all web related products

Deploy and operate server clusters within a cloud environment


At least 8 years of experience developing, shipping, and maintaining back-end web applications

Proficient in Python and Django or equivalents

Expert level knowledge of running RDBMS or NoSQL as well as writing complex SQL

Expert level knowledge of running servers on cloud platform with Nginx or equivalents

Basic knowledge of front-end web technologies

Able to work independently and drive results

Ability to find the root cause of problems with a minimal set of information and data points

Ability to find the optimal solution given the resource constraints, and understands the concepts of under-engineering and over-engineering


Wide range of experience from the front-end to the back-end

Experience in various languages and frameworks

Experience participating in product design and architecture

Awards from programming competitions (e.g., ACM ICPC, IOI, etc.)

English proficiency for business collaboration


SendBird is the world's leading chat & messaging platform as a service. Our mission is to digitize human interactions for businesses. Our platform delivers billions of messages per month to help people connect through the products and apps they love.

We’re a Y Combinator alumnus (W16) and have raised over $120M from leading investors including ICONIQ Capital, Tiger Global Management, Shasta Ventures, August Capital, and FundersClub. We are headquartered in San Mateo, CA (50+ employees) with an Asia-Pacific office in Seoul (100+ employees).