Jul 2023 – Present · 2 yrs 8 mos

• Managing a team of 8+ engineers to build gaming & payments stack in RUSH handling >36K concurrent users, 26K games with avg duration-10 min(10M game session/day), payments handling 20M+ txn/day & generating $1.5M Net Rev/day
• Re-architected Matchmaking to async NIO, achieving 100x scale for large user tournaments with zero downtime
• Saved $60k+ annually by replacing SFS with inhouse RGB server ($50k) and consolidating low-CCU games ($10k)
• Led an 10-engineer team to launch the 'Bingo' app for the US market in 2 months, delivering core gameplay, payments, features like user onboarding, refer a friend, spin the wheel,ccms
• Improved Leaderboard & GT performance by ~70% latency reduction via DB Query optimizations
• Reduced metric collection n/w load by 98% & UDP error by 100% by migrating centralized to decentralized Statsd
• Developed backend load testing env, enabling at-scale validation of critical systems - RGB server, MM re-arch
• Established Jenkins CI/CD pipeline ensuring robust deployment & Kafka for streaming analytics events (all apps)
• Resolved RGB server MT bugs, sped up deployment by parallel & autoscaling servers & adding live user migration
• Overnight shipped a dynamic API URL config system for RUSH, preventing service disruption from domain blocks
• Launched Loyalty programs pivoting to wagering/tenure-based rewards, boosting user retention and revenue
• Championed gaming backend Dockerization, boosting Dev & QA productivity via isolated testing environments
• Led successful RNG Certification with GLI for game fairness
• SKILLS:
• Language: Java, Python, C, Shell, Android
• DB: MySQL, MongoDB, Redis, ES, HBase, BigTable
• Framework: Netty, Spring, Hibernate, Django, Flask, Thrift
• Technology: MQTT, HTTP, Zookeeper, WebSocket, REST, Kafka, Jenkins, Docker, SmartfoxServer, Maven
• Cloud: AWS(EC2, S3), GCP(Compute Engine, BigQuery, GCS, LB), FCM
• Soft Skill: SDLC, Mentoring, Leadership, Stakeholder Management, Project Management, Hiring

Jan 2021 – Jun 2023 · 2 yrs 5 mos

• Managed team of 8+ engineers, spearheaded technology at multiple cross-functional products from inception in high pressure startup env. Responsible for providing Available, Reliable, and Scalable infrastructure.
• Shipped 18 high quality casual/hyper-casual games at scale leading internal & 3rd party teams
• Developed NETTY/NIO based inhouse game server(replacing SFS) with a team of 4 devs, achieving 4x CPU & 16x MEM reduction, supporting 10M user games / day
• Horizontally scaled by splitting single/multi pool tables across servers & solving for CPU, mem leak performance
• Restructured gaming backend into a Git submodule umbrella project, improving deployment & code protection
• Reduced latency by 50% across mm, game-start, winning dist by DB call optimization, piggybacking game packet
• Reduced various *'money deducted game not started'* scenarios (hence user complaints) to <0.01%, enhancing UX
• Reduced Matchmaking Failures to <0.1% by restructuring code for precise failure identification and targeted fixes
• Developed a Ludo bot, including design, architecture, and metric analysis to demonstrate skill-based gameplay
• Tech: NETTY, Java, MongoDB, MySQL, Redis, SmartFoxServer, GCP, HTTP, NIO, WebSockets

Jul 2017 – Dec 2020 · 3 yrs 5 mos

• I am part of the core backend team which is responsible for designing, developing and scaling the whole backend infrastructure for Hike Messaging application (core messaging, push notification and HTTP stack) since the initial days of Hike. The highlights of the system include:
• Handling over 100 million total users and over 10 million concurrent users • Handling over 1.5 billion messages per day with message delivery latency less than 1 second
• Handling user's address book and reverse address book storage in HBase (over 5 billion entries)
• 99.95 % system uptime
• Developed systems like File transfer, User onboarding, Hike web, Messaging Reliability etc & did lots of optimisations and systems engineering for improving message delivery.
• I was also part of the core backend team of Hike Payments with over 1M transactions/day at peak. Architected & Deployed the entire Payments backend which included:
• Wallet, UPI, Blue Packets, Recharge, Pay SDK, Reconciliation & Settlement, Security & CS front-end & tooling
• Prior to this as part of the Growth & Labs engineering teams I built, managed & launched a ton of stuff.
• Natasha, Hike Daily, Hike Caller, GIFs, Onboarding, Talk Time Rewards, OEM Partnerships, Birthday Reminders, and a ton of growth hacks and experiments.
• Technical Skills :
• OS - Windows, Linux, Mac OS X
• Languages - Java, Python, C, Shell, Android(Basic)
• Databases - MySQL, MongoDB, Redis, HBase, Big Table
• Frameworks - Spring, Hibernate, Django, Flask
• Technologies - Netty, MQTT, HTTP, Zookeeper, WebSocket, Thrift, REST, Kafka
• Cloud - Amazon Stack (EC2, S3, SNS, SQS), GCP Stack (Compute Engine, Big Query, GCS), Firebase (FCM)

May 2014 – Jun 2017 · 3 yrs 1 mo