Dec 2018 – Aug 2021 · 2 yrs 8 mos

Jul 2017 – Nov 2018 · 1 yr 4 mos · Gurgaon, Haryana, India

• Acquired by RazorPay
• Developed stateful computations over data streams for Flink framework using Scala. Used various operators, connectors, state backend and checkpointing mechanisms.
• Architected and deployed Hortonworks Data Platform (HDP) using Ambari server and secured it with Kerberos. Achieved high availability for clusters.
• Hands on experience with Big Data technologies like Hadoop, HDFS, Yarn, Cassandra, Kafka. Written plugins for Magento, Shopify and WooCommerce platforms.
• Maintained the Infrastructure and Deployments. Helped the team to scale the cloud platform to handle the peaks of over 1+ Million transactions a day.
• Written APIs using swagger tools with Express framework built on node.js. This helped in generating SDKs for different platforms real quick.
• Implemented Elasticsearch and Neo4j, to be used in Identity Cluster which helped in detecting frauds by chaining.
• Generated device fingerprinting JavaScript to achieve 90% accuracy for the same browser on the same device.
• Written Python scripts for automating tasks and designed the backed for Blog.
• Helped clients in understanding the APIs structure and worked closely with their developers to achieve minimum integration time.
• Led and mentored a team of strong and enthusiastic developers to develop tools and resolve bugs/issues. Along with this, worked on setting up the guidelines for the re-architecture of the complete API's Platform.

Aug 2015 – Jun 2017 · 1 yr 10 mos · Gurugram, Haryana, India

• Joined as Senior Software Engineer and promoted to Technology Lead, within a year, for HT Media's product - Shine Learning. Stabilized the whole e-commerce vertical with 99% uptime. Created APIs for integration with vendors on Django REST framework.
• Worked on improving the scale and performance with large varied workloads, optimize, tune and manage the health of the platform.
• Redesigned the whole ecosystem for Shine Learning, enhancing its reliability, improving serviceability & making it scalable to 10X traffic.
• Implemented a Payment Portal containing 4 types of payment vendors, which reduced the payment drop rate by 50% and shooting up the revenues for Shine Learning.
• Took initiatives to develop tools for automation of tasks done on excel like Lead Generation Tool, IT Asset Management Tool and Customer CRM. Individually handled product, development and design of these tools using open source technologies and tools such as bootstrap, Django, Celery.
• Provided mentorship and helped the team to grow especially on the technical side.
• Collaborated with the key stakeholders, other product development groups and software vendors to identify, define, develop and implement solutions for complex business and technical requirements e.g., inbuilt Dialer solution for Customer CRM.

Aug 2014 – Jul 2015 · 11 mos · Gurugram, Haryana, India

• Designed and developed Operations Portal, Customer Portal and Vendor Portal using technologies like Django Framework, MongoDb, Mysql, Redis and Celery.
• Implemented new features from the product roadmap without breaking the legacy systems. Handled the core development of required web services and architecting the database to achieve reusability, testability, scalability and maintainability.
• Worked on new strategic assignment to re-architect some of the critical pieces of the Shine Learning's ecosystem.
• Created an upselling and lead generation mailer system based on data mining. Achieved sending 1000 email/seconds using multiprocessing.
• Took initiatives for the complete overhaul of the user's dashboard which in turn increased spent time by 8%.
• Improved the SEO and Bounce rate by integrating Blog engine and linking all other modules with one another so as have better customer experience.

May 2013 – Jul 2014 · 1 yr 2 mos · Greater Delhi Area

• Written modular API engine using Django REST framework, fixed bugs, and refactored the legacy system with new technologies.
• Did integration with various network service providers for billing through mobile.
• Developed a Server Push Model to publish notifications/alerts/tips for the customers.
• Initiated & automated content management system for various publishers to upload the content.
• Deployed code, and maintained and monitored servers for production. Handled the overall design and development of the Website.

Oct 2011 – Apr 2013 · 1 yr 6 mos · Greater Delhi Area

• Gathered requirement from the clients, estimated the timelines for changes and delivered them within the estimated timeframe.
• Worked on Django, Symphony (PHP-based framework), jQuery, JavaScript, MySql, Postgres, nGINX, uWSGi and other-related technologies.
• Unit testing and deployment on staging and production environment of the clients.