jobapplier

Software Engineer - 2 (Billing)

exotel

Skills

Required

  • Golang
  • Java / PHP
  • Kafka
  • MySQL
  • Apache
  • Kubernetes
  • data structures
  • algorithms
  • building scalable distributed systems
  • event-driven architectures
  • schema design
  • query tuning
  • replication

Preferred

  • billing / invoicing / payments / ERP integrations
  • Zuora
  • Beanstalkd
  • automation
  • Razorpay
  • Jenkins
  • Prometheus / Grafana / Loki
  • Scripting
  • Python

About exotel

Exotel is the emerging market’s leading full-stack customer engagement platform and business-focused virtual telecom operator. Incorporated in 2011, Exotel’s cloud-based product suite powers 50 million daily engagements across voice, video, and messaging channels. Exotel serves over 6000 companies across 60+ countries, including India, SE Asia, the Middle East, and Africa.

Exotel Engineering builds fault-tolerant, scalable, and real-time distributed systems.

Our tech stack includes Golang, Java, PHP, MySQL, Apache Kafka, Kubernetes, Beanstalkd, and Elasticsearch.

We follow best practices in clean abstractions, loosely coupled services, and DevOps-driven operations.

We strongly believe in "you build it, you own it."

The IPO Readiness pod owns Exotel’s billing and revenue platform — real-time call/SMS billing, balance deduction, invoicing, payment processing, and credit control. The platform handles approximately 200k transactions per minute across Voice, Messaging, and other Exotel solutions.

Responsibilities

  • As an MTS-II on IPO Readiness, you will design, build, and integrate components across the billing platform and support IPO-readiness initiatives (controls, monitoring, automation). You will work on feature delivery, production support, and cross-system integrations with ERP (Business Central), payment gateways, and the Zuora migration path.
  • Develop and maintain microservices and batch jobs in Golang, Java, or PHP
  • Build and extend REST APIs and Kafka consumers/producers for billing events, sync flows, and fallback pipelines.

Requirements

  • Strong computer science fundamentals (data structures, algorithms).
  • Proficiency in at least one of: Golang (preferred), Java, or PHP.
  • Experience building scalable distributed systems and event-driven architectures.
  • Hands-on MySQL — schema design, query tuning, replication awareness.
  • Experience with Apache Kafka and asynchronous processing (consumers, lag, fallback/retry patterns).
  • Kubernetes basics — pods, deployments, namespaces, ArgoCD or equivalent GitOps.
  • DevOps mindset — you build it, you own it; comfortable with logs, metrics, and incident triage.

Preferred

  • Exposure to billing, invoicing, payments, or ERP integrations (Zuora, Business Central, Razorpay).
  • Experience with Beanstalkd, Jenkins, Prometheus/Grafana/Loki.
  • Scripting in Python for ops automation and report generation.
  • Familiarity with ITGC/SOX-style controls and audit documentation.
  • Experience: 2–5 years