Profile

Experienced Serverless/Backend Developer with a passion for building serverless apps on AWS
Total 10 years of IT experience in different industries like OTT, E-Commerce, IoT, MarTech, BlockChain
Total 9 years of experience with AWS and its various services
Developing Serverless apps since 2016
Extensive knowledge in Serverless Architecture, Best Practices, AWS Lambda, API Gateway, DynamoDB, S3, SQS, SNS, Step functions, Serverless Framework, CloudFormation, Terraform, CDK
Skilled in NodeJS/TypeScript/Python

Experience

Senior Backend Developer Socket Tech | August 2022 – present

Transformed a monolithic architecture using EC2 and ALB into a modern microservices system leveraging AWS Serverless services, including Lambda, API Gateway, ECS, EventBridge, S3, Secrets Manager, and CloudFront.
Trained developers in adopting serverless architecture and related tools.
Developed and maintained RESTful APIs and other backend services for a Quoting Engine that helps users find the cheapest and fastest routes (bridges) to transfer their crypto assets between chains, using TypeScript, PostgreSQL, and MongoDB. (https://bungee.exchange/)
Developed a blockchain indexer backend service from scratch to help users track their token bridging status. Implemented using TypeScript, Lambda, StepFunction, SQS, and MongoDB (https://socketscan.io/).
Built an internal API request tracing system to trace logs across AWS CloudWatch log groups to find the logs for a single request. Which is used to identify when there are errors or high latency.
Built middleware module to track all kind of http request(external apis, RPC, AWS SDK) made from a lambda service.(not using XRAY or any observability tools). Used this module to log high latency request and track performance of external apis by adding custom metrics on duration and errors.
Built custom metrics and alarms using CloudWatch to build custom alerts based on business logic
Managed AWS accounts and implemented AWS Organizations to separate production and development workloads. Enhanced security by replacing IAM-based logins with G Suite logins, and streamlined user and permission management through AWS IAM Identity Center.
Built a datalake and ETL pipleline to store user bridging events using EventBridge, eventbridge pipes, Lambda,Glue, Athena
Implemented cost optimization strategies and set up proactive alerts to monitor and manage cloud resource usage efficiently

Senior Serverless Developer Serverless Guru, LLC (Contract, Remote)| Dec 2020 - Aug 2022

Contributed to various aspects of a serverless email personalization engine
Developed a scalable, self-healing, fault-tolerant backend for the personalization and email-sending engine using NodeJS/TypeScript, AWS Lambda, API Gateway, DynamoDB, SNS, SQS, S3, Serverless Framework
Implemented circuit breaker mechanism to help the system to queue messages if a third-party integration/service goes down and process the messages once the service is up.
Implemented DLQs and DLQ handlers in different parts of the system to handle/retry/alert failed events/messages
Built a monitoring and alerting system for the personalization engine using CloudWatch Custom Metrics, Alarms, Slack, etc

DevOps Engineer

Fabric Inc, Bangalore, India / Feb 2020- Nov 2020

Contributed to various aspects of a multi-tenant serverless E-commerce framework
Developed a tool to create multiple serverless environments for different clients using, NodeJS,AWS Lambda, and Step Functions
Developed a Frontend app for a Multi account/Multi-tenant Deployable CICD with RBAC using Bitbucket Pipelines, AWS Cognito, DynamoDB, API Gateway, Lambda and VueJS, NodeJS
Implemented observability tools like AWS X-Ray and Epsagon across all organizational applications
Helped Developers implement Serverless Best Practices

DevOps Engineer

Matic Network(Polygon), Bangalore, India/ Aug 2019- Feb 2020

Contributed to building backend infra and monitoring tools for blockchain networks on AWS Cloud, using NodeJS
Built and multimode (100 + nodes) testnets on AWS EC2 using Chef, Terraform
Managed App configurations deployments using Chef
Setup multi-stage CICD using AWS Code pipeline, Code build
Migrated APls from EC2 backend to AWS Lambda and API Gateway and made it scalable
Migrated frontend apps from EC2 and hosted on S3 with CloudFront
Developed a service dashboard to show the status of each testnets and its transactions using NodeJS, VueJS, Lambda, S3, API Gateway

Devops Engineer

Spuul Digital Entertainment, Mumbai, India/ Jan 2015 - July 2019

Contributed to various parts of a global OTT platform based on Indian content (Live and VOD content)
Developed and managed a serverless Video Ingestion and Encoding Backend service With NodeJS, Zencoder, AWS Lambda, S3, DynamoDB, MediaConvert, MediaPackage, Cloudfront, Step Functions, Batch, Serverless Framework
Developed a front-end app for the above backend app where users can choose content from S3 and manage encoding as per custom needs. The app was built using VueJS, S3, and Cloudfront, Cognito
Developed a dashboard app to provision/manage/monitor Live Channels using VueJS and S3 for frontend and DynamoDB, CloudWatch Metrics and Alarms, API Gateway,Lambda for the backend
Developed a serverless Analytics and ETL pipeline Data-lake using AWS API Gateway, S3, Kinesis, Lambda, Glue, Athena
Developed an Authentication on edge service, with Lambda@Edge and Cognito user pools for staging apps. Which adds an authentication mechanism on CloudFront
Developed an internal documentation app using Go Hugo, S3, and CloudFront

System Engineer

Cinesoft Private Limited, Kerala, India/ October 2012 – December 2014

Single-handedly built hardware backend infra for an OTT platform
Installed C-Band dish antennas to receive free-to-air channels for Live channels
Set up IP IRD’s to encode the satellite feeds to UDP transport streams
Installed and configures Elemental Live L400 encoder on-premise to encode live channels and video contents to multi-bitrate HLS streams
Encoded and published contents and streams to Akamai CDN

Projects

OTT Platform

Built entire serverless backend (APIs, Authentication, Storage, Encoding pipeline) for an OTT platform Using TypeScript, AWS Lambda, API Gateway, DynamoDB, MediaConvert, S3, Cognito
Authentication for subscribers and admin users using AWS Cognito
CloudFront + S3 for content delivery and caching
Used DynamoDB Single Table Design
Content uploading and encoding(HLS) pipeline
Content encryption with Pallycon Multi DRM and Apple Fair play/Widewine
Admin API’s for content management, like Movie, Tv Show(seasons, episodes) entity creation

IOT Service backend

Developed backend for an End To End IoT platform which tracks water levels and water usage consumption in household water tanks with AWS IoT Core, DynamoDB S3, Lambda, Athena, Cognito

Image Processing Service

Developed an automated image processing pipeline with AWS Step functions, Rekognition, Lambda

Generate Multi Format and Resized images on upload
Extract Image attributes using AWS Rekognition and Lambda
All steps, failure handling and custom logic were orchestrated using step functions

Developed an On the fly Image conversion and serving tool using NodeJS, AWS Lambda@Edge, CloudFront and S3

Source images uploaded to S3
When the customer requests for an image from the browser, if the browser supports webp, a lambda@edge function will look for webp image source on S3, if no webp found, it will convert the source file to webp format and store it in the destination. All the subsequent user requests from webp-supported browsers will get the webp file.

Contact

(+91) 9819 750 868 [email protected]

[linkedin.com/in/vishnu-prasad-a2490b9/](https://thrilling-banon-5c8.notion.site/linkedin-com-in-vishnu-prasad-a2490b9-7d606b58d6264333a654fc018d761c3c)

[github.com/imewish](https://thrilling-banon-5c8.notion.site/github-com-imewish-974bd3c5af6240af9a02ff987ea363cd)

Education

Diploma In Electronics Engineering

Skills

AWS

Lambda, API Gateway, Lambda@Edge,CloudwatchDynamoDb, RDS, ECS, Cognito, SQS, SNS, Athena,Glue,EventBridge,Kinesis, Stepfunctions, Cloudformation

Databases

DynamoDB,MongoDB,

Posgres,MySql

Programming Languages

TypeScript/NodeJS/Python

Iac Tools

CDK, Terraform, Cloudformation