# Prabhat Ranjan Mishra – Engineering Manager

> Engineering Manager at BrowserStack with 9.5 years in software engineering and 4+ years leading cross-functional teams. Specializes in AI-driven automation, scalable platforms, and LLM integration.

## About

Prabhat Ranjan Mishra is an Engineering Manager based in Bengaluru, India. He currently leads the App Low Code Automation product at BrowserStack — an AI-powered platform enabling natural-language driven test automation for mobile apps using LLM orchestration and Appium.

- Website: https://prabhatmishra.com
- Email: mishrarprabhat@gmail.com
- LinkedIn: https://www.linkedin.com/in/prabhatrmishra/
- Location: Bengaluru, India

## Experience

### Engineering Manager – BrowserStack (June 2025 – Present)

Leading the App Low Code Automation Product — an AI-powered platform enabling natural-language driven test automation for mobile apps.

- Built an LLM-driven automation framework that converts test intent into executable Appium flows for mobile app testing.
- Designed the LLM orchestration layer for prompt management, test-step generation, validation, and retry logic to improve test stability.
- Leading a team of 1 Lead Engineer and 6 SDEs.
- Implemented feedback loops to continuously improve test accuracy using execution logs and failure analysis.
- Integrated the platform with BrowserStack's device cloud to enable AI-powered testing at scale.
- Mentored engineers across backend, infra, and QA automation to deliver a production-grade AI system.

### Associate Director – Engineering, SaaS Labs US, Inc. (July 2022 – May 2025)

SaaS Labs develops B2B SaaS products to create productive experiences for customer-facing teams.

- Scaled the billing engineering team from 2 to 13 engineers and the Sales Dialer team from 3 to 10.
- Implemented a balance service using microservice architecture — delivering 57ms response time at 19,000 RPM throughput.
- Coordinated SOC-2 Type 1 & ISO 27001:2013 Certification efforts, supporting mid-market growth.
- Introduced JustCall IQ with real-time meeting transcription, sentiment analysis, and AI/ML coaching — contributing to 5% of MRR.
- Mentored engineers on clean code principles and test-driven development, resulting in improved code quality.

### Engineering Manager – SaaS Labs US, Inc. (Oct 2020 – July 2022)

Led a team of 11 members across two products — Helpwise.io and salesdialer.justcall.io.

- Oversaw the development of the Helpwise product from the ground up, contributing to 10% of SaaS Labs' revenue.
- Created and optimized an email processing microservice in GoLang, doubling email processing frequency.
- Transitioned the production MySQL database to a master-slave architecture, reducing DB load by over 50%.
- Architected JustCall's monolithic infrastructure migration to microservices — created 5 initial microservices.
- Overhauled search using AWS Elasticsearch, replacing slow DB queries with fast full-text search.
- Built CI/CD pipelines and container orchestration with AWS EKS, reducing infrastructure cost by 35%.

### Software Development Engineer – SaaS Labs US, Inc. (Sep 2016 – Oct 2020)

Built four B2B SaaS products from the ground up: JustCall, Sales Dialer, Helpwise, and CallRoot.

- Developed CallRoot.com call tracking software with 10+ CRM and Google Adwords integrations, used by 1,000+ businesses.
- Wrote the algorithm in JavaScript to track website visitors, identify their source, and map it with the call they make.
- Pioneered salesdialer.justcall.io (auto dialing software) — contributing ~30% of SaaS Labs' revenue.
- Built the auto dialer and predictive dialer algorithm using Node.js.
- Integrated Sales Dialer with HubSpot, Pipedrive, Salesforce, Zoho, and other popular CRMs.
- Developed Stripe billing integration for JustCall using PHP and NestJS, including automatic top-up features.

## Products Built

### App LCA – BrowserStack
AI-powered low-code automation platform enabling natural-language driven test creation and execution for mobile apps. Built on LLM orchestration and Appium.
Tags: LLM, Appium, Mobile Testing, AI Automation
URL: https://www.browserstack.com/

### JustCall Sales Dialer
Cloud contact center software with auto dialer and predictive dialer for outbound calling. Contributes ~30% of SaaS Labs' revenue.
Tags: Node.js, Telephony, CRM Integration, NestJS
URL: https://justcall.io/

### Helpwise
Shared inbox software used by support teams to manage customer communications across email, SMS, live chat, and social channels.
Tags: GoLang, Flutter, Microservices, SaaS
URL: https://helpwise.io/

### CallRoot
Call tracking software for marketing teams to measure which sources drive the best results. Used by 1,000+ businesses globally.
Tags: JavaScript, Analytics, Marketing, CRM
URL: https://callroot.com/

## Skills

- Languages: JavaScript, TypeScript, GoLang, Python, Ruby on Rails, PHP
- Databases: MySQL, MongoDB, Redis, Elasticsearch
- Frameworks: Node.js, React.js, NestJS, Django
- Infrastructure: AWS, GCP, Docker, Kubernetes, AWS EKS
- Tools & Practices: GraphQL, Pub/Sub, CI/CD, Microservices, Design Patterns, OOP, TDD
- Monitoring: New Relic, Sentry, Grafana, Prometheus, Sonar Cloud
- AI / LLM: LLM Integration, Prompt Engineering, AI Test Automation, LLM Orchestration

## Education

B.Tech – Electronics & Communications Engineering
Guru Gobind Singh Indraprastha University (Aug 2012 – May 2016)

## Awards

- Outstanding Contributor Award – SaaS Labs US, Inc. (2022)
- Legacy Laureate Award – SaaS Labs US, Inc. (2023)

## Domains

This person's portfolio is accessible at the following domains:
- https://prabhatmishra.com (primary)
- https://prabhat.ai
- https://prabhatmishra.org
- https://prabhatmishra.co.in
- https://prabhat.io
- https://prabhatmishra.in
- https://prabhatmishra.co
- https://prabhatmishra.info