Abhijit Sinha
Hoboken,NJ
Summary
Highly proficient technical leader and hands-on engineer with experience in managing cross-functional teams, building high-quality software solutions. Expert in python, java, go, linux and cloud computing technologies. Experience in IaC for deployment and managing multi-tenant highly available infrastructure on Azure and GCP cloud providers. Engineering experience in API development, event driven services, test-driven development.
Overview
19
19
years of professional experience
Work History
Staff Software Engineer
WALMART GLOBAL TECH
04.2022 - Current
- Infrastructure design and deploy on WCNP dedicated GKE cluster to spin up Collibra data quality.
- Helm management and release for product charts.
- Designed and coding in python for CLI/YAML spark jobs execution in Bring Your Own Cluster (BYOC) mode.
- Designed and developed Function as a service in common languages (java, scala, python) to execute spark jobs using dataframe on Hive metastore.
- Engineering lead for Walmart Data Portal, contributing on API and services coding on spring boot application.
- Review and hands on coding of event based Kafka and batch based micro services deployed as K8 pods
- Extensive experience with GCP offerings such as bigquery, IAM, dataproc, dataplex, cloud storage, big table.
- Lead technical design and discussion with external vendors such as Collibra, Google GCP.
- Close collaborate with Product Management, UX/UI, Engineering Quality Assurance, and DevOps.
- Technical demonstration of go-live solutions to leaders.
- Communicate complex technical concepts effectively to both technical and non-technical stakeholders
- Participated in all agile ceremonies and SDLC lifecycle.
- Collaboration with internal teams such as BFD, WCNP, Strati, Terraform, Infosec, HIPPA, MLS, MMS
- End to end SSP creation and Infosec approval.
Senior Software Engineer
WALMART GLOBAL TECH
01.2020 - 04.2022
- On prem mongodb replica set deployment design and infrastructure setup.
- BigID K8s deployment on azure AKS using workflow tools such as concord
- Responsible for capacity planning, provisioning, and management of Azure Infrastructure in managed subscription using Terraform enterprise
- Create playbooks, scripts using Ansible, Shell, and Cron scheduling within concord workflow.
- Design and implement failover and DR strategies such as data dump, replica set, Oplog sync up, and availability set
- Created application environments for each brand, including installing and spinning docker image containers, installing SSL certificates, mapping DNS names, updating ad authentication, and setting up NoSQL DB.
- Create telemetry dashboards to add application monitoring and alerting.
- Debug and troubleshoot production issues and provide hot-patch code fixes to Spring Boot Java applications integrated with Rest API and Rabbit MQ
- Defining the BigID roadmaps and fine-tuning the architecture to serve the growing needs of the platform.
- SSP creation and deployment architecture design approved with infosec
- Execute continuous delivery using kanban stories and confluence documentation of runbooks, version upgrades, and root cause analysis.
- Drafting and leading execution of technical milestones for program
- Collaborate with internal teams on tasks such as Config, Framework, Strati, NetSec, Torbit, and Concord
- Perform peer review and provide technical direction to the team on engineering tasks
- Vendor and customer group management.
Devops Consultant
COGNIZANT TECHNOLOGY SOLUTION US CORP
12.2018 - 12.2019
- This position was at Jet.com which later got acquired by Walmart
- Primary driver of trusted network project between public cloud tenants and data center involving updates to cloud Infra and PaaS
- Liaison with cross functional technical and business team to complete the project tasks within deadline
- Hands-on contribution to the project such as provisioning eventstore main and projector cluster by creating terraform modules, purging and changes to app services, messaging brokers, subscriptions
- Worked on networking issues to assist teams with cross firewall org service connectivity, third party whitelisting of egress traffic through Palo VMs, proxy creation using dns entries
- Involved in support activities related to networking connectivity, cloud infrastructure, Kafka data streaming
- Documented and presented the changes in cloud architecture and set up changes in DMZ, express route, Vnets, App services environments and classic cloud services in various forums such as All-Hands, Daily Stand Up Weekly status
- Assisting strati gcp cloud services team related to access requests.
Senior Associate
COGNIZANT TECHNOLOGY SOLUTION US CORP
09.2014 - 09.2018
- Designed and coded back end services for the remittance application using java, jax-rs and spring suite
- Code review of team members for the suite of applications
- Involved in technical research on retirement suite of applications in production environment
- Generated dockerfile to be utilized for java containerization and exposed as an image
- Participated in discussion for orchestration of the nodes containing pod replicas
- Performed troubleshooting of issues related to slate cache node on coherence cluster
- Involved in end to end software development lifecycle - Requirement gathering, estimation, design documentation, technical changes, unit testing, integration and user acceptance testing, support production deployment
- Worked on poc tools like PII updates, platform maintenance mode, case manager update, straight through processing updates to provide business assistance
- Worked and coordinated with various interfacing teams within the organization.
- Maintained bandwidth distribution and onshore-offshore coordination for the team with zero escalations.
Lead Java Consultant and Scrum Master
COGNIZANT TECHNOLOGY SOLUTION US CORP
12.2012 - 07.2014
- Hands on development on IBM Websphere platform for user checkout module.
- Developed Junit framework for a new application service, performed peer code reviews.
- Worked on technical changes for projects involving core Java, JSP, JQuery, multi-tier architecture related to web services for banking marketing and end consumer products.
- Performing build activities for life cycle environments.
- Involved in end to end software development lifecycle.
- Worked with internal and third-party teams to identify dependencies/risks.
- Educating team with new Agile tools and methodologies.
- Responsible for driving daily scrum calls, sprint prioritization, grooming, retrospective.
- Kept a working coordination between geographically distributed team.
- Preparation of reports on defect leakage/RCA, sprint closure report, milestone achieved.
Senior Java Developer
INFOSYS TECHNOLOGIES LTD.
07.2005 - 12.2012
- Responsible for designing, coding, performance tuning and maintenance of enterprise j2ee application suite related to exchange adapters, confirmation systems and auto-match (ICE Econfirm) systems.
- Intensive usage of java concepts such as Threading, Event handlers, JDBC (XML parsing/XSLT), Servlets, EJB, MDB, JMS, Spring, Hibernate, Junit, DAO
- Worked on RDBMS PL/SQL to develop database designs, procedures, triggers, cursors, views, synonyms.
- Designed Clear Case branching strategy and kept the version of the code intact by generating build and performing merge after every release.
- Hands on development and successful deployment in a 10 million dollar Dodd Frank federal compliance project.
- Performing refactoring of Integration layer from Tibrv to JMS using Web logic as provider
- Performed migration of code base from jdk1.3 to jdk1.4 focusing on moving from SAX Parser to Xerces.
- Worked directly with third parties (counterparties, exchanges) required during development/testing and environment maintenance
Education
Computer Engineering -
Visvesvaraya Technological University
06-2005
Skills
- Language: Java/J2EE, Python, Ansible, Terraform, Go, SQL, Shell
- Containerization: Docker, Kubernetes
- Storage: Big Query, Big Table, Kafka, GCS, Mongo, Oracle, Postgres, Eventstore
- Cloud: GCP, Azure, DataProc, DataPlex, GKE, AKS
- Big Data: DPaaS, Airflow, Atomic, Hive Metastore, Google Data Quality, Collibra Data Quality, BigID
- Development Tools: Sledge, Kubectl, Visual Studio, IntelliJ, IntelliJ, DB Visualizer, Swagger, Postman, Vault, Nomad, Consul
- Servers: Weblogic, Websphere, OpenShift, Oracle Coherence
- Telemetry & Version: Grafana, Prometheus, Splunk, Wily, GIT, ClearCase
- Methodology & tools: Agile Scrum, Kanban, JIRA, Confluence, Service Now, ClearQuest, BMC Remedy software
Accomplishments
MAKING THE DIFFERENCE AWARD (MTDA) - WALMART GLOBAL TECH | Aug 2023
Awarded with MTDA for delivering enterprise data quality general availability and creating backend pipeline execution capability for data engineers.
.
CERTIFICATION OF APPRECIATION | Aug 2017
Received CoA award for delivering new product launch and post live support for calculation and consolidation of retirement funds.
Timeline
Staff Software Engineer
WALMART GLOBAL TECH
04.2022 - Current
Senior Software Engineer
WALMART GLOBAL TECH
01.2020 - 04.2022
Devops Consultant
COGNIZANT TECHNOLOGY SOLUTION US CORP
12.2018 - 12.2019
Senior Associate
COGNIZANT TECHNOLOGY SOLUTION US CORP
09.2014 - 09.2018
Lead Java Consultant and Scrum Master
COGNIZANT TECHNOLOGY SOLUTION US CORP
12.2012 - 07.2014
Senior Java Developer
INFOSYS TECHNOLOGIES LTD.
07.2005 - 12.2012
Computer Engineering -
Visvesvaraya Technological University