Job Description

About us
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Exotel is one of Asia's largest cloud telephony companies. Our aim is to change the way enterprises look at customer communication. We build the best-in-class communication products that power the companies of today and tomorrow. Our technology enables customer communication for our clients such as Uber, Ola, Go-Jek, ICICI, IDFC, Redbus, Flipkart, Quikr, Practo, Lazada, Redmart, etc. to name a few. We are a 9-year-old company with humble beginnings. We started as a 3-member team. Currently, we are a 120-member team catering to over 3000 customers across the globe. Our technology has connected over 400 million people across the world and powered over 10 billion conversations. Read our growth story here.




Tech @ Exotel
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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 a 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




Platform Engineering @ Tech @ Exotel
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• Develop/improve Exotel's distributed voice stack.
• Build fault-tolerant, scalable and real-time distributed system
• Own the design, development and deployment of code to improve product and platform functionality
• Writing high-performance, reliable and maintainable code
• Support team with timely analysis and debugging of operational issues
• Emphasis on automation and scripting.
• Effectively work in a collaborative and agile team environment.
• Mentor juniors in the team to do the above.
• Be on a rotational on-call roster to handle operational issues




What are we looking for?
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We are looking for candidates with strong programming skills, and a strong understanding of computer/distributed 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




• Bachelor's or Master's degree in computer science or equivalent.
• Experience working with major cloud solutions AWS (preferred) , Azure, and GCP.
• Familiarity with 3-Tier, microservices architecture and distributed systems
• Experience with the design & development of RESTful services
• Experience with developing Linux-based applications, networking and scripting.
• Experience with different data stores, data modelling and scaling them
• Familiarity with data stores such as Aerospike, MySQL, Mongo-db etc.
• Experience with one of the OOP languages: Golang (preferred) / PHP (preferred) / Ruby / Python / C++
• Good understanding of data structures, multi-threading and concurrency concepts.
• Experience with DevOps tools like Jenkins, Ansible, Kubernetes, and Git is a plus.
• Familiarity with elastic search queries and visualization tools like grafana, kibana
• Strong networking fundamentals: Firewalls, Proxies, DNS, Loadbalancing, etc.
• Strong analytical and problem-solving skills.
• Excellent written and verbal communication skills.
• Team player, flexible, and able to work in a fast-paced environment.
• A "DevOps" mindset. You own what you will develop.




### Good-to-haves




• Experience in telecom, related protocols and product start-ups would be a plus.
• Exposure to telephony protocols, ISDN, SIP, WebRTC
• Practical Experience in managing Production scale systems
• Experience in the development of cloud telephony systems (CPaaS) is a plus
• Experience: 3-6 years