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Ayush Rastogi

Lead Software Engineer | Platform Engineering | Backend Architecture | Distributed Systems | Cloud Infrastructure

Greater Delhi Area

6+ years of work experience

SaaS Labs
Apr 20242 yrs 2 mosMay 2026

Noida, Uttar Pradesh, India

Worked across JustCall (AI-powered business communication platform) and Helpwise (shared inbox and customer communication platform), leading platform engineering, backend modernization, and infrastructure initiatives. Served as the Primary Technical Owner of Helpwise, driving architecture decisions, production reliability, security initiatives, and long-term platform evolution. Key Contributions ▸ Led the backend modernization of JustCall's Appointment Scheduler, migrating orchestration from PHP to NestJS and integrating Google Calendar, Outlook Calendar, notifications, webhooks, and booking workflows supporting ~500 bookings/day. ▸ Evaluated and integrated Recall.ai after identifying reliability and operational limitations in the existing meeting recording solution, improving system reliability while reducing engineering complexity for ~70 meetings/hour. ▸ Built the application layer for a pre-production environment mirroring production architecture across 20+ services, implementing multi-region deployments, deployment automation, SOPS secret management, and disaster recovery with near-instant traffic switchover. ▸ Contributed to Google Cloud infrastructure optimization through SQL tuning, Redis optimization, VM-to-Kubernetes migration, and infrastructure right-sizing, helping reduce cloud expenditure by ~$27K/month. ▸ Conducted 50+ technical interviews across Frontend, Backend, and Full-stack roles while mentoring engineers through architecture reviews, code reviews, and production debugging.
SaaS Labs
Apr 20222 yrs 1 moApr 2024

Noida

Focused on Platform Engineering, scalability, and building reusable engineering systems. Key Contributions ▸ Co-designed the backend architecture for Helpwise's flagship Universal Inbox, creating a unified communication platform across 16 communication providers that became the primary customer experience for 30K+ users. ▸ Designed, built, and maintained 50+ third-party integrations across CRM, collaboration, communication, calendar, and billing platforms. As the platform evolved, standardized the integration framework by introducing reusable OAuth 2.0 handling, synchronization, webhook processing, logging, token lifecycle management, and API abstraction layers, significantly improving maintainability and accelerating future integration development. ▸ Implemented OAuth 2.0 provider capabilities for Helpwise's Stripe Marketplace custom application, including the authorization endpoint, authorization code exchange, token endpoint, access token generation, and refresh token handling. ▸ Owned the end-to-end lifecycle of Helpwise applications across 20+ partner marketplaces, including integration development, OAuth implementation, API development, marketplace compliance, publication, review coordination, and post-release maintenance. ▸ Redesigned Helpwise's conversation storage through account-level database sharding, supporting 20M+ threads, 100M+ messages, and 400+ production APIs. ▸ Executed a zero-downtime production migration using feature flags, dual writes, and rollback mechanisms, reducing API response latency by ~91% (4.5s → 400ms).
SaaS Labs
Jan 20202 yrs 4 mosApr 2022

Noida

Built foundational product capabilities that became core parts of Helpwise. Key Contributions ▸ Designed and developed migration pipelines for Front, Zendesk, Intercom, Freshdesk, Groove, Help Scout, and LiveAgent, enabling enterprise customers to seamlessly migrate users, contacts, mailboxes, conversations, messages, tags, and assignment history into Helpwise. ▸ Designed the backend architecture for Helpwise's real-time Chat Widget, one of the platform's core customer communication products, enabling WebSocket-based multi-agent messaging. ▸ Built customer-facing capabilities including CSAT and Forms, expanding Helpwise's customer engagement platform. ▸ Worked directly with customers and cross-functional teams during Helpwise's early startup phase, collaborating across product discovery, technical support, sales discussions, and engineering to translate customer problems into scalable product capabilities.
Jun 20192 mosJul 2019

IIT Roorkee

Ayush’s AI Stack

antigravity
antigravity
codex
codex

Education

KRISHNA INSTITUTE OF ENGINEERING AND TECHNOLOGY, GHAZIABAD

B.Tech, Information Technology

KRISHNA INSTITUTE OF ENGINEERING AND TECHNOLOGY, GHAZIABAD

20164 yrs2020

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Headline

Lead Software Engineer | Platform Engineering | Backend Architecture | Distributed Systems | Cloud Infrastructure

About

Lead Software Engineer with 6+ years of experience designing and scaling B2B SaaS platforms, specializing in Platform Engineering, Backend Architecture, Distributed Systems, and Cloud Infrastructure. I've progressed from Software Development Engineer to Lead while building production systems serving 30K+ users, 20M+ conversation threads, and 100M+ messages. My work has focused on building reusable platforms rather than isolated features—from standardizing an integration platform with 50+ third-party integrations and co-designing Helpwise's Universal Inbox, to executing a zero-downtime database sharding migration that reduced API latency from 4.5s to 400ms and modernizing JustCall's Appointment Scheduler. I enjoy solving scalability challenges, designing reliable backend systems, and building engineering platforms that make products easier to evolve.

Location

Greater Delhi Area

AI stack

antigravity

codex

Work experience

Lead Software Development Engineer at SaaS Labs, Apr 2024 - May 2026 · 2 yrs 2 mos, Noida, Uttar Pradesh, India, Worked across JustCall (AI-powered business communication platform) and Helpwise (shared inbox and customer communication platform), leading platform engineering, backend modernization, and infrastructure initiatives. Served as the Primary Technical Owner of Helpwise, driving architecture decisions, production reliability, security initiatives, and long-term platform evolution. Key Contributions ▸ Led the backend modernization of JustCall's Appointment Scheduler, migrating orchestration from PHP to NestJS and integrating Google Calendar, Outlook Calendar, notifications, webhooks, and booking workflows supporting ~500 bookings/day. ▸ Evaluated and integrated Recall.ai after identifying reliability and operational limitations in the existing meeting recording solution, improving system reliability while reducing engineering complexity for ~70 meetings/hour. ▸ Built the application layer for a pre-production environment mirroring production architecture across 20+ services, implementing multi-region deployments, deployment automation, SOPS secret management, and disaster recovery with near-instant traffic switchover. ▸ Contributed to Google Cloud infrastructure optimization through SQL tuning, Redis optimization, VM-to-Kubernetes migration, and infrastructure right-sizing, helping reduce cloud expenditure by ~$27K/month. ▸ Conducted 50+ technical interviews across Frontend, Backend, and Full-stack roles while mentoring engineers through architecture reviews, code reviews, and production debugging.

Senior Software Development Engineer at SaaS Labs, Apr 2022 - Apr 2024 · 2 yrs 1 mo, Noida, Focused on Platform Engineering, scalability, and building reusable engineering systems. Key Contributions ▸ Co-designed the backend architecture for Helpwise's flagship Universal Inbox, creating a unified communication platform across 16 communication providers that became the primary customer experience for 30K+ users. ▸ Designed, built, and maintained 50+ third-party integrations across CRM, collaboration, communication, calendar, and billing platforms. As the platform evolved, standardized the integration framework by introducing reusable OAuth 2.0 handling, synchronization, webhook processing, logging, token lifecycle management, and API abstraction layers, significantly improving maintainability and accelerating future integration development. ▸ Implemented OAuth 2.0 provider capabilities for Helpwise's Stripe Marketplace custom application, including the authorization endpoint, authorization code exchange, token endpoint, access token generation, and refresh token handling. ▸ Owned the end-to-end lifecycle of Helpwise applications across 20+ partner marketplaces, including integration development, OAuth implementation, API development, marketplace compliance, publication, review coordination, and post-release maintenance. ▸ Redesigned Helpwise's conversation storage through account-level database sharding, supporting 20M+ threads, 100M+ messages, and 400+ production APIs. ▸ Executed a zero-downtime production migration using feature flags, dual writes, and rollback mechanisms, reducing API response latency by ~91% (4.5s → 400ms).

Software Development Engineer at SaaS Labs, Jan 2020 - Apr 2022 · 2 yrs 4 mos, Noida, Built foundational product capabilities that became core parts of Helpwise. Key Contributions ▸ Designed and developed migration pipelines for Front, Zendesk, Intercom, Freshdesk, Groove, Help Scout, and LiveAgent, enabling enterprise customers to seamlessly migrate users, contacts, mailboxes, conversations, messages, tags, and assignment history into Helpwise. ▸ Designed the backend architecture for Helpwise's real-time Chat Widget, one of the platform's core customer communication products, enabling WebSocket-based multi-agent messaging. ▸ Built customer-facing capabilities including CSAT and Forms, expanding Helpwise's customer engagement platform. ▸ Worked directly with customers and cross-functional teams during Helpwise's early startup phase, collaborating across product discovery, technical support, sales discussions, and engineering to translate customer problems into scalable product capabilities.

Summer Intern at IIT Roorkee, Jun 2019 - Jul 2019 · 2 mos, IIT Roorkee

Education

B.Tech, Information Technology, KRISHNA INSTITUTE OF ENGINEERING AND TECHNOLOGY, GHAZIABAD