HEMANT MUNDRA

Led a team of 10+ engineers managing user engagement services like Promotions, Deposit Offers, Streaks, Levels and Rewards.

• Launched Levels, Surprise rewards & Rewards Marketplace, increasing user retention and revenue by 3.6%.
• Scaled Streaks services to handle 15M+ RPM with zero downtime while consistently meeting SLAs.
• Built a high-throughput personalization engine processing 600M+ events/hour using DynamoDB and Kafka, enabling real-time user-item mapping at scale for promotional targeting.

Horizontals

• Led a strategic infra cost reduction initiative, achieving 19% savings (4.6 Cr during peak IPL period), while maintaining high system uptime and performance SLAs.
• Institutionalized tech reviews, SLA-based alerting, on-call reporting and SOPs across multiple teams, boosting delivery quality and reducing production incidents by 80%.

Tech stack: Java, Vert.x, Kafka, MySQL, Redis, DynamoDB, React Native, Docker, AWS.

Led a team of 11 engineers across 4 locations and 3 time zones EU, US, and India.

• Set up a ledger-based transaction management system enabling secure, auditable handling of 100M+ transactions per month.
• Developed a secure and scalable login service maintaining client side sessions using JWT's supporting over 50 million daily active sessions.
• Implemented low-latency price updates(less than 10ms) via WebSockets and Redis pub-sub.
• Developed a robust, scalable Order Management Service using Golang, capable of handling 1M+ orders per minute.
• Built high-performing teams by establishing detailed code review culture, HLD/LLD design practices, and measurable delivery KPIs.

Tech stack - Golang, gRPC, Redis pub-sub, Event-driven micro-services, Kafka, Docker.

• Directed backend architecture and engineering initiatives, improving product scalability, personalization, and operational efficiency across the platform.
• Improved product relevance by enhancing user profiling based on skin code and concerns, leading to more personalized recommendations.
• Architected a system for personalized product descriptions and tips, by creating personas using user skin quiz.
• Automated SKU synchronization across services, reducing launch time from overnight to instant, accelerating time to launch by 50%.

Tech stack: Elixir, Phoenix, REST APIs, Rails, Postgres, Elasticsearch.

Managed and mentored a team of 11, driving end-to-end product delivery through agile practices, including PRD and design reviews, timeline management, and task prioritization.

• Designed real-time notification service (Pulse) using Firebase, Sidekiq, Postgres, and Rails.
• Integrated call masking and IVR with Exotel, designing schemas and REST APIs in Elixir and Postgres.
• Built authentication service with server-side session management (cookies, Redis, Postgres, Rails).
• Implemented hierarchy management via recursive CTEs for automatic access control.

• Maintained and led the rent service, overseeing task management, team mentoring, assessments, and delivery timelines.
• Delivered ad products (visibility and lead-based), launching the first revenue stream within 3 months without impacting user experience.
• Designed and built the Flatmates backend architecture using Rails, Elasticsearch, Postgres, and RabbitMQ.
• Enhanced search and discovery across rent, resale, PG, and new projects, improving user engagement and conversion.

• Designed and developed the backend architecture for the Paying Guest platform, including a unified schema to merge PG and rent results seamlessly.
• Built a CRM portal for lead management with scheduling and lead decay support, enhancing conversion efficiency.
• Developed a robust mail service, integrating multiple gateways (Mailchimp, Mandrill), central templating with A/B testing, bounce management, in-mail feedback forms, and safeguards to prevent misuse in non-production environments.