SendBird

SendBird is the world's leading chat & messaging platform as service. We are a global team on a mission to revolutionize how people communicate digitally. 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 $71M from leading investors including ICONiQ Capital, Shasta Ventures, August Capital, and FundersClub. The company is global with a headquarters in San Mateo (30+ people) and an Asia-Pacific headquarters in Seoul (45+ people).

GROWTH TRAJECTORY

76% of the world’s population uses a messenger app - that’s 5.8 billion users. SendBird is already the market leader in chat and messaging and we've tripled our revenue year over year. We are expanding our operations globally to continue serving the world’s most innovative companies like Reddit, NBA, Yahoo! Sports, and GO-JEK.

WHY YOU SHOULD JOIN US

1. We are building the most scalable chat infrastructure.
   We manage over 1B messages per month from 50M monthly active users and support over 1M+ concurrent connections. We face exciting engineering challenges at scale over a globally distributed infrastructure.

2. Chat has become the most engaging tool for communicating in marketplaces, on-demand services, and online communities.
   Real-time chat increases direct communication between key users, leading to more transactions, higher user engagement and retention, and better conversion to key business goals. Building and maintaining a large-scale, globally distributed chat system is a massive engineering effort. That’s why innovative businesses use our technology. By using SendBird’s API, our customers are able to integrate real-time, massively-scaled chat and messaging into any application.

3. We’re the #1 chat and messaging API and SDK, powering in-app conversation for some of the world’s leading companies.

TECHNICAL CHALLENGES

The core challenge of the Platform team is architecting, scaling and operating servers that handle massive scale of users and messages occurring around the world across different time zones and regions.

Some projects you may work on:

• Architecting and developing large-scale WebSocket and Http/2 servers.
• Optimizing massive real-time databases serving tens of billions of messages.
• Building a fault-tolerant and efficient distributed messaging system to connect hundreds of servers.
• Designing and building interesting features that are relevant to messaging such as ML- based profanity filters, end-to-end encryption, voice, video, and advanced analytics
• Monitoring thousands of servers in real-time to generate alerts and prevent server outages.
• Setting up state-of-the-art CI/CD processes to cover 9 different data centers.

SendBird is headquartered in San Mateo.
Our APAC office is in Seoul.