Java, Javascript, Nodejs, PHP, Python, TypeScript, Angular
Rajarshi Chakraborty
Senior Technical Consultant
Kolkata,West Bengal, India
Summary
Accomplished Technical Architect offering 13+ years' experience in comprehensive design and development of infrastructure and architecture for software projects. Attentive collaborator and communicator from project conception to completion. Creative in devising solutions to improve business operations and meet clients’ technical needs. Seasoned team leader possessing the technical and interpersonal skills to provide exceptional project deliverables.
Experienced strategist and designer of well-architected distributed enterprise systems that are scalable, resilient, efficient and fault tolerant. Having strong affinity for robust yet rational enterprise architecture. Mentored and coached wide audience of expert engineers on trends, best practices, DevOps practices, cloud practices, open source software and ways of working.
Overview
3
3
Languages
11
11
Certifications
8
8
years of post-secondary education
13
13
years of professional experience
Work History
Senior Technical Architect
Ernst & Young LLP
Gurgaon (India)
07.2020 - Current
- Improved business productivity for clients by 40% by re-engineering and designing cloud native applications.
- Defined enterprise processes and best practices and tailored enterprise processes for applications.
- Consultation services to financial service customer for cloud migration strategy, preparing roadmap, architectural blueprints.
- Generated Point of View of SRE, DevOps, Cloud Strategy, Microservice Architecture for many Financial Service customers.
- Coached cloud engineers to adopt to DevOps principles and follow engineering best practices – Test Pyramid, Test Driven development, End to End automation, One click production deployment, Cloud Technologies, Toolchains
- Prepared engineering maturity model for leading financial customers
- Developed architecture for DevOps dashboard for unified metrics collection from distributed DevOps and Operational toolchain
- Azure DevOps migration and strategy for legacy on-premise deployment.
Technical Architect
Cognizant
New Jersey (USA), Kolkata (India)
06.2015 - 07.2020
- Lead architecture for data transformation, data pipeline for exchanging hotel data between Informatica MDM and various reservation and property management systems.
- Microservice + serverless architecture development for Guest Experience Engine & Geo Mapping solution for hotel customer using AWS APIG, Lambda, DynamoDB, EC2, S3, KMS, Openlayer, Geoserver, SAM, Code build pipeline.
- Lead development & architecture of Alexa skillset using NodeJS + serverless for 3rd Gen Echo dot device for hotel search and book.
- Developed NLP (Stanford Java lib) platform based voice enabled hotel search for hotel web application and integrated chatbots module using AWS Lex.
- Lead architecture of cloud migration of enterprise B2C geospatial search, rates and inventory, booking services and refactor in microservices using NodeJS + AWS Lambda, Serverless framework.
- Developed ETL process to transfer streaming records from AWS Kinesis to Redshift and also data transformation jobs using AWS Glue for millions of reservation and loyalty records.
- Developed service virtualization framework and configuration website in Angular.
- Created design and architecture for hotel notification framework to channelize and govern notification across Salesforce marketing cloud, Adobe campaign, reservation systems and also deliver push notification to mobile apps by AWS pinpoint segments.
- Lead in cloud governance team for hospitality customer and established service catalog, auto tagging and cost consolidation of AWS resources, Trusted advisor notifications.
Senior Full Stack Developer
Cognizant
New Jersey (USA), Kolkata (India)
10.2010 - 06.2015
- Orchestrated efficient large-scale software deployments, including testing features and correcting code.
- Managed development milestones from initial steps through final delivery.
- Created designs and processes in Informatica ICRT & ICS to create RESTful services for hotel loyalty management system. Created BPEL processes using XQuery and deployed in Informatica cloud. Developed loyalty processing system in ICS by consuming data form various sources and feeding records into PostGreSQL.
- Innovated mechanism to identify deployment strategy for ICRT processes that saved significant deployment time.
- Created Mobile Website for hotel customer using PHP, JQuery Mobile, HTML5, CSS3, Akamai, Intrawoven Teamsite.
- Lead team of 50 engineers to create enterprise services to be consumed by Mobile App using Spring Core/Security/JDBC, Jersey, Oracle DB. Supported creating deployment scripts using Weblogic 12c WLST.
- Created Adobe AEM photo rendition framework by imagemagick in S3.
Software Developer
Cognizant
Kolkata (India)
12.2007 - 10.2010
- Revised, modularized and updated old code bases to modern development standards, reducing operating costs and improving functionality.
- Developed programs from ground up using measured, market-focused approach to eliminate waste and streamline implementation cycle.
- Developed e-commerce website for hotel customer in JSF 2.X, Spring 3.X, Pretty Faces, ehcache, Apache HTTP Server, Weblogic, Teamsite Content Management System, JQuery.
- Developed middleware services in TIBCO BW to consume data from Property Management System and Central Reservation System using various adapters and transformers.
- Created JMS messaging modules for restaurant system and DB interactions by Spring JDBC templates.
Education
PGDBM - Business Management
NMIMS (Pursuing Currently)
India 01.2021 - 01.2023
Bachelor of Technology (B.Tech) - Electrical And Electronics Engineering
Sikkim Manipal Institute of Technology
India 07.2003 - 07.2007
XII (CBSE) - Science
Kendriya Vidyalaya
India 04.2002 - 05.2003
X (CBSE) -
Kendriya Vidyalaya
India 04.2000 - 05.2001
Skills
Technical Architecture Design
Accomplishments
- Cognizant “Leading Edge” award for year 2018 for contribution in Cloud Technologies (AWS)
- Cognizant “Most Valuable Player” award for year 2017 for contribution in Informatica Cloud Services
- Cognizant Hackathon winner – 2013
- Cognizant “Above & Beyond” North America Zone winner Q3’2011 for contribution in Web Development
- Customer “Count on Me” award recipient for SOA based Central Reservation System development
- University Gold Medal, 2007 for academic excellence in B-Tech Degree course
Software
REST, SOAP, Web Sockets, Java EE, HTML5, CSS, Angular, React
Spring – Core/Boot/Cloud/Batch/Data/Web Flow, Struts, JBoss Seam, JSF, Rich/Prime/ICE Faces
JSON, XML, XSLT, JPA, Hibernate, iBatis
MySQL, MongoDB, Lucene - SOLR, Memcached, DynamoDB, Redis
AWS(Practitioner), GCP(Learner), Azure(Practitioner), Kafka, Zookeeper, Elasticsearch, Apache Storm, Informatica ICRT, TIBCO BW, Endeca
Jenkins, Azure DevOps, SonarQube, Nexus, JFrog Artifactory, SAST/DAST tools, OWASP, Kubernetes, Docker, Nginx, APM
NodeJS Jest, Mocha, Chai, Nock, Junit, Selenium, TestNG, Mockito
Wealth and Asset Management, Financial Services, Travel & Hospitality, Retail, Restaurants, E-Commerce
Certification
AWS Certified Solutions Architect – Associate
Timeline
PGDBM - Business Management
NMIMS (Pursuing Currently)
01.2021 - 01.2023
Senior Technical Architect
Ernst & Young LLP
07.2020 - Current
Technical Architect
Cognizant
06.2015 - 07.2020
Senior Full Stack Developer
Cognizant
10.2010 - 06.2015
Software Developer
Cognizant
12.2007 - 10.2010
Bachelor of Technology (B.Tech) - Electrical And Electronics Engineering
Sikkim Manipal Institute of Technology
07.2003 - 07.2007
XII (CBSE) - Science
Kendriya Vidyalaya
04.2002 - 05.2003
X (CBSE) -
Kendriya Vidyalaya
04.2000 - 05.2001
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