Jun 2020 – Jul 2021 · 1 yr 1 mo · Toronto, Ontario, Canada · Remote

• ● Live App: https://apps.apple.com/ca/app/journie-rewards/id1440857272
• ● Engineered a scalable serverless backend on AWS for React Native mobile app, handling over 10,000 concurrent users and achieving 99.9% uptime.
• ● Designed and implemented GraphQL APIs using AWS AppSync, enhancing data fetching by 60%.
• ● Implemented AWS Lambda functions integrated with DynamoDB, leading to a 40% reduction in database query latency and enhancing system responsiveness.
• ● Orchestrated the migration of a legacy monolithic backend to a microservices-based architecture, resulting in a 60% increase in system reliability and flexibility.
• ● Implemented automated monitoring and alerting using CloudWatch, reducing mean time to resolution (MTTR) by 30% through proactive issue detection.
• ● Implemented authentication and authorization using AWS Cognito, ensuring secure access control and achieving 100% compliance with security standards.

Aug 2019 – Jun 2020 · 10 mos · Toronto, Ontario, Canada · Hybrid

• ● Design, develop and deploy cloud-native scalable RESTful microservices in AWS using EC2 instances, Lambda functions and SQS
• ● Write Lambda functions using NodeJs and Typescript to aggregate data from incoming events and store the results in DynamoDB.
• ● Involved in creating architecture blueprints and detailed documentation using required AWS services (like EC2, Lamba, SQS, SNS, VPC, CloudFront, etc)
• ● Document and design the IAM infrastructure to create and control AWS users & group access to AWS services using IAM policies
• ● Build S3 buckets with SSE-KMS encryption for objects.
• ● Design S3 bucket policies enabling cross region replication and maintain S3 lifecycle rules for transitioning and expiration of objects.
• ● Develop AWS Cloud Formation templates to update AWS resource dependencies and create custom sized VPC, subnets, NAT, NACL to ensure successful deployment of Web applications

Dec 2018 – Sep 2019 · 9 mos · Mississauga, Ontario, Canada

• ● Lead efforts to refactor the design and architecture of SOTI suite of back-end Node JS APIs.
• ● Working on a massive rewrite of SOTI Insight Analytics tool with the goal to implement customer requested extensible features using JavaScript, ES6, JSON, NodeJS and Express framework for developing Real time sub millisecond applications
• ● Implement reactive React components using RxJS Observable to handle real time data updates using front-end charting libraries (Highcharts.js & D3.js).
• ● Build RESTful microservices and middleware configurations using NodeJS-Express framework supporting JSON for communication between multiple SOTI products and SOTI Insight Analytics tool.
• ● Write DAO CRUD operations using Spring Hibernate to establish connection pooling mechanism.
• ● Perform code reviews and push other developers to build generalized, reusable components and services to consume API's as written using by Express JS framework

Jun 2017 – Mar 2018 · 9 mos · Cambridge, Ontario, Canada

• ● Design and develop company’s main product - ‘brokerWOLF’ web application in Java using Spring MVC Framework
• ● Use Spring MVC for RESTful APIs, Spring Core Annotations for Dependency Injection (DI), Spring Boot for micro-services and Spring Batch for running batch jobs
• ● Maintain 100% test coverage using JUnit with Mockito all throughout the Test-Driven Development (TDD) process as well as use log4j for analysing and fixing bugs
• ● Worked on developing the initial User Interface using React JS components, Forms, Events, Keys, Router and Flux concept.
• ● Use React-Redux to maintain application state and dispatch user actions
• ● Worked on design and implementation of MongoDB schema
• ● Write services to store and retrieve user data from MongoDB for ‘brokerWOLF’ web app
• ● Follow Agile and Scrum methodology in 2-week sprints to develop web services and demonstrate output to product managers and incorporate the feedback
• ● Use Jira, Confluence and Bitbucket (Github) for issue tracking, documentation and code reviewing.

May 2016 – Mar 2017 · 10 mos · Waterloo, Canada

• ● Conducted in-depth troubleshooting for Fortune 500 clients using OpenText cloud based File management application software.
• ● Helped with assisting system foundation issues, low level data file editsand information relationship concerns
• ● Reproduce EDI issues and determining root cause.
• ● Researched issues relating to communication between clients, data flow management and client ID setups with their trading partners and dealers
• ● Assist management with scheduling, service protocol improvements and quality assurance
• ● Maintain positive rapport with client while relating difficult issues to upper administration for high severity tickets avoiding SLA breachat all costs
• ● Accomplish consistent high rankings in month to month measurements, including call span, number of calls per session and consumer satisfaction ratings

Sep 2015 – Dec 2015 · 3 mos · Cambridge, Ontario, Canada

• ● Did troubleshooting of BlackBerry Enterprise Server (BES 12) using tools such as - Fiddler, Charles Proxy, F12 Console, Windows logging, Mac logging, and Tomcat logging.
• ● Provided technical assistance to customers using WatchDox Cloud.
• ● Assisted with the collection of information and performing advanced troubleshooting inquiries from specialists and associates.
• ● Creating new or updating Knowledge Base documentation as required.
• ● Reproducing issues and determining root cause.
• ● Maintain composure and patience in face of difficult customer situations.
• ● Processed inbound and outbound technical support call at 10% faster rate than average.
• ● Referred difficult issues to upper management while maintaining positive customer rapport.

Jan 2013 – Aug 2014 · 1 yr 7 mos · Chandigarh Area, India

• ● Published Technical White Paper demonstrating various mechanisms to save energy in Cloud Datacenters.
• ● Communicated with client (HPCCLoud Research Lab) over researching, designing and implementing novel methods to minimize energy consumption in cloud datacenters.
• ● Developed technical solutions by coordination with internal project teams and understanding of requirements.
• ● Designed and built Power Stability Algorithm (PSW) in order to conserve energy in the cloud datacenters and implemented the same in Java usingCloudSim and Collections framework.
• ● Employed the implementation in Amazon Web Services (AWS)

Jan 2012 – Sep 2012 · 8 mos · Chandigarh Area, India

• ● Worked in a teamof developers to develop a payroll management software for clients having more than 1000 workers.
• ● Used Spring MVC framework in Java to architect the whole project.
• ● Enhanced and refined EasyPay feature by implementing parallel transactions using Java threads under the guidance of supervising engineer.
• ● Developed database to store payment information using MySQL.
• ● Participated in sessions with business investigators and colleagues to examine business IT requirements and made an interpretation of business prerequisites into working model.