Sendbird

At Sendbird, we are building the world's no1. customer communications platform. We power over 300M+ people's conversations every month and we are working with the leading customers such as DoorDash, Match Group, Yahoo!, PayPal, Walgreens, and have raised $220M+ in total funding from ICONIQ, Tiger Global, Meritech, Emergence, SoftBank Vision Fund, Steadfast, Shasta, and August.

Python, Gevent, Uwsgi, Nginx, SQLAlchemy, Django RabbitMQ, Redis, AWS Aurora DB, Elasticsearch, AWS Kinesis, AWS CloudFront, AWS Athena

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.