Surya Kanta De

Being very initial developer, I was responsible develop and scale few core modules.

• Developed and scaled Fantasy Cricket join using MySql, Redis, AWS, EC2. Scaling it to handle fantasy joins at 30k RPM with an P95 latency of less than 30ms.
• Handling infra : Build pipeline, API Gateway, Load Balancer, RDS, EC2, VPC, Atlas MongoDB cloud.
• Developing AB-experiment service in Golang and Serving 20K RPM requests at P95 2.5ms
• Developing Spark batch jobs to generate SQL based custom segments for ab-experiment. more than 350 segments created so far for 2.5M users.
• Developing consumer-groups that takes care of all data pipelines(notification, BE analytics events, reporting events, branch web hook events). It runs at 5kRPM.
• Integrating newrelic, cloudwatch, zenduty, moengage, firebase, slack for monitoring and retention.

As a senior developer I was responsible for gathering requirement, HLD and LLD and develop and monitor development end to end.

• Migrated user properties for 55M users from Redis to mongoDB to avoid memory issues and brought down ab-service latency from 700ms to less than 50ms.
• Developed Invoicing module from scratch.
• Build pipelines(SQS) for handling sms/whatsapp notification delivery statuses (70k RPM) from notification vendors.
• Added in house DynamoDB based identity store & search module (10M events per day) for analytics 3rd party integration.
• Developed cache based configuration-service which serves application level global configurations to clients 70k RPM at P95 4ms.
• Technologies: NodeJS, TypeScript, NestJs, Docker, Kubernetes, AWS, Postgres, Redis, Mongo, DynamoDB, ElasticSearch, newrelic, grafana.

Designed and built saas application www.peoplehum.com which is into
HCM domain. Few modules I was part of the development are Goals, Leave Management, Finance, Project Management, Asset Management, Billing and Subscription Module, OKR, Survey, Attendance, Report & Analytics module, and a few.

• Technologies: Java, Scala, SpringBoot, MongoDB, MariaDB, Kafka, Redis, ElasticSearch, JPA, Spring Scheduler, Multithreading, Kibana, Python, Scala, Junit, Mockito, tomcat, okhttp, Shedlock, Cobertura, Sonarlint, Shell Script.
• Tools: SVN, Sonar, Cobertura, Jenkins, tomcat, Gradle, Postman, newrelic, grafana.

I started my journey here as Junior Developer. I learnt a lot and part of that small wonderful team. Worked as a Fullstack developer with java, AngularJS, Mysql, Hazelcast, AWS, ec2, cloudwatch.

• Developed Patient Portal for family registration with token based URLs.
• Integration with different SMS and fax vendors for delivery update.
• IVR integration for insurance.
• Flue shot dashboard for conducting flues shot campaigns.
• Push Notification Integration for android and ios with GCMS and APNS.