Software Engineer - 3, Backend (Voice)

Job Description

• About us Exotel is the largest cloud communications company in India and South East Asia. We build the best in class communication products that power the companies of today and tomorrow
• Our aim is to change the way enterprises approach customer communication. Our technology enables customer communication for our clients such as Uber, Ola, Go-Jek, Redbus, Flipkart, Quikr, Practo, Lazada, Redmart, to name a few
• We are a young company with humble beginnings in 2011 that grew from a 3 member team to 150 employees in 2018. Last year, our technology connected 194 million people in India, powered 3.3 billion customer calls and served 8.2 billion API hits, to place our scale in context
• To get to know more about us, this might be helpful: https://2018.exotel.com/,You should join us if You enjoy working in a fast-paced environment with a good appetite for learning
• You love to bring structure or method, have a flair for designing, evangelising and implementing processes
• You enjoy bringing highly qualified talent into the company
• You love experimenting & challenging the status quo
• You believe in being better than you were yesterday
• Tech @ Exotel Exotel engineering solves some really cool infrastructure level problems with the goal of ensuring no one misses a call or an SMS
• Our focus is on building very fault-tolerant, loosely coupled, scalable and real-time distributed system,We are generally agnostic of language, technology or tools. Currently, our tech stack is built on Golang, Node.js, Ruby, Java and PHP. We use Aerospike, MySQL as data stores, ElasticSearch for search and Beanstalkd for queuing,We emphasize a lot on clean abstractions of code, loosely coupled services and good coding practices,We are very strong believers in "you built it, you own it!". And running a distributed system is very different from just building one!,We are crazy about high availability,Software Engineer @ Exotel The job of a software engineer involves all aspects of software engineering: designing and architecting services and features, development, testing, instrumentation, deployment, stabilization and operations. You will be working on the core cloud telephony platform and products. A lot of focus in what you do will be outside of just adding features - you will be constantly thinking of "how do I scale out my cluster to twice its size with 60 seconds?", "how do I increase the platform uptime from 99.95 to 99.99?", "how to shave off a few extra milliseconds in response times?" etc
• You would be mentoring junior engineers on all technical aspects, owing the code review process. Maintaining the quality of the code base top notch and running process improvements across releases, engineering efficiencies etc
• What does it take? We are looking for technically very strong candidates, with a strong understanding of computer systems. We want people who love designing and building infrastructure components and large complex services. Being a Software Engineer at Exotel takes a bit more than the following,Must Haves,Expertise with one of Java / Go / Scala / C / C / C#,8 years of experience in building large scale distributed systems OR done core systems programming,Technically passionate candidates who are comfortable in scripting in at least one of PHP / Ruby / Python,Knowledge of different data stores, data modeling and scaling them and also have strong fundamentals around 3-Tier architecture,networking and systems,Good to Haves,Knowledge of Ansible/Chef or Puppet,Knowledge around CI/CD frameworks,Practical experience in managing Production scale systems,Exposure to telephony protocols, ISDN, SIP, WebRTC,Experience in telecom, related protocols and product start ups would be a plus
• Teams : Voice The voice team in Exotel focuses on developing the core services to provide connectivity functionality. The team works on processing calls on PSTN (PRIs) as well as IP (SIP), routing them to the appropriate flow (call-centre, number masking, etc). The team also deals with book-keeping of all the calls in terms of recording, timing, call status for billing and other tertiary services. All this gets done at a scale of 10M calls a day!

Job Summary