Software Engineer III
First seen by Alion on Aug 24, 2026.
About Exotel :
Exotel is a leading full-stack customer engagement platform and business-focused virtual telecom operator, powering over 70 million customer conversations every day across Voice, Messaging, Video, and AI.
Founded in 2011, Exotel enables more than 6,000 businesses across India, Southeast Asia, the Middle East, and Africa to build exceptional customer engagement experiences through its Omnichannel Contact Centre, Communication APIs, and Conversational AI platforms.
The company recently secured a Virtual Telecom Operator (VTO) license, enabling fully compliant end-to-end VoIP telephony services.
Backed by $100M in Series D funding and with $50M+ ARR, Exotel is building the communication infrastructure that powers customer engagement for high-growth businesses across emerging markets.
The company was also recognized at the ET Startup Awards 2022.
About the Role :
As a Software Engineer 3, you'll play a key role in designing, building, and scaling the distributed systems that power millions of customer interactions every day.
You'll work on high-scale backend services, influence technical direction, mentor engineers, and help build reliable, performant, and resilient platforms.
This role is ideal for engineers who enjoy solving complex distributed systems problems, have strong ownership, and thrive in product-driven environments.
What You'll Do :
- Design and build scalable, highly available backend systems and services.
- Drive technical design discussions and contribute to architecture decisions.
- Build resilient microservices capable of handling large-scale production traffic.
- Improve system performance, reliability, observability, and operational excellence.
- Collaborate with Product, Engineering, Infrastructure, and Operations teams to deliver impactful features.
- Participate in code reviews and establish engineering best practices.
- Mentor junior engineers and promote a culture of technical excellence.
- Take ownership of production systems following a "You Build It, You Own It" mindset.
- Continuously evaluate new technologies and improve engineering efficiency.
What We're Looking For :
1. Must Have :
- 5+ years of software engineering experience with a Bachelor's or Master's degree in Computer Science or a related field.
- Strong experience building backend product applications in high-scale production environments.
- Excellent programming skills in Golang (preferred).
- Strong understanding of :
1. Distributed Systems.
2. Microservices Architecture.
3. Scalability and Performance Engineering.
4. RESTful APIs.
5. Data Structures & Algorithms.
6. Multithreading and Concurrency.
- Hands-on experience with cloud platforms such as AWS (preferred), Azure, or GCP.
- Experience working with Linux systems, networking fundamentals, and scripting.
- Experience designing data models and working with databases such as MySQL, MongoDB, Aerospike, or similar technologies.
- Hands-on experience with Kubernetes, Jenkins, Git, CI/CD pipelines, and infrastructure automation.
- Familiarity with monitoring and observability tools such as Grafana, Kibana, Elasticsearch, or equivalent.
- Strong understanding of networking concepts including DNS, Load Balancers, Firewalls, and Proxies.
- Excellent debugging, analytical, and problem-solving skills.
- Strong ownership mindset with experience operating production systems.
2. Good to Have :
- Experience building telecom, CPaaS, contact centre, or communication platforms.
- Knowledge of cloud telephony and telecom protocols.
- Experience integrating with SMS, WhatsApp, or other messaging platforms.
- Experience operating large-scale distributed production systems.
- Exposure to ETL pipelines, event-driven architectures, or streaming systems.
- Prior experience working in high-growth product startups.
What You'll Bring :
- Passion for building scalable products that impact millions of users.
- Strong engineering fundamentals and systems thinking.
- Ability to balance technical excellence with execution speed.
- Excellent collaboration and communication skills.
- A continuous learning mindset and eagerness to solve challenging engineering problems.
Why Join Exotel? :
- Build products that power millions of customer interactions every day.
- Solve complex distributed systems and infrastructure challenges at scale.
- Work with experienced engineers in a high-ownership, product-first culture.
- Influence architecture, engineering practices, and platform evolution.
- Grow your career while building products used across multiple emerging markets.
Skills
Backend Architecture, Distributed Systems, Multithreading, System Design, Golang, RESTful API, Microservices Architecture, Linux, AWS, Data Structure, Algorithm