Integration & Customization Engineer II
First seen by Alion on Sep 27, 2026.
About Us :
Exotel is the emerging market's leading full-stack customer engagement platform and business-focused virtual telecom operator.
Founded in 2011, our cloud-based product suite powers over 50 million daily engagements across voice, video, and messaging channels.
Trusted by 6,000+ companies across 60+ countries, Exotel enables unified customer engagement for leading businesses such as Ola, Swiggy, Flipkart, GoJek, Byju's, HDFC Bank, Zomato, and Urban Company.
Our offerings include communication APIs, a modern omnichannel contact center, and a conversational AI platform hosted on the cloud.
We are a Series D company valued at $100 million with $60 million in ARR.
Professional Services :
The Professional Services team is the "Special Forces" of our engineering organization. We don't just build products; we solve high-stakes enterprise puzzles.
Our engineering solves infrastructure-level problems to ensure no one misses a call or an SMS, even in highly customized enterprise environments.
We focus on building fault-tolerant, scalable, and real-time distributed systems that integrate seamlessly with complex enterprise ecosystems.
Tech Stack :
- Languages : PHP, Python, Golang, Node.js
- Data/Observability : MySQL, NoSQL, Elasticsearch, Grafana, Kibana
Roles & Responsibilities :
As an Integration and Customization Engineer - 2, you will be the technical anchor for complex ECC (Enterprise Contact Center) project customizations.
- Engineering Excellence : Design and develop high-complexity customizations, integrations, and automation modules for large-scale enterprise customers.
- Technical Leadership : Independently deliver complex modules and take ownership of the end-to-end execution of internal projects.
- Mentorship : Guide and unblock L1 engineers, ensuring the team maintains high coding standards and best practices.
- System Ownership : Navigate and optimize forked, legacy, or complex codebases to ensure high performance and reliability.
- Stakeholder Management : Work closely with Product, Engineering, Infosec, and Customer-facing teams to translate enterprise requirements into executable technical roadmaps.
Must-haves :
- 2 - 4 years of software engineering experience with a Bachelor's or Master's in Computer Science.
- Advanced proficiency in PHP and expert knowledge of HTML, CSS, and React.js.
- Deep mastery of Data Structures, Algorithms (DSA), Concurrency, and Multithreading.
- Practical experience with 3-Tier and Microservices architectures, RESTful services, and HTTP protocols.
- Expert in SQL/NoSQL data modeling, caching layers, and building/deploying Linux-based applications.
- Understanding of TCP/IP networks and Linux OS configuration.
What success looks like (first 90 days) :
- End-to-End Ownership of Complexity : Take full responsibility for the design, implementation, and production stabilization of a high-complexity enterprise customization.
- Technical Leadership & Unblocking : Act as a technical anchor, guiding L1 engineers through rigorous code reviews and test plans.
Skills
PHP, React.js, MySQL, NoSQL, ElasticSearch, Linux, RESTful API, Golang, Node.js, Javascript, Microservices Architecture