Ajay is available for hire
Hire AjayAjay Kumar Barun
Verified Expert in Engineering
DevOps, Cloud Solution Architect, and Developer
Location
Delhi, India
Toptal Member Since
March 3, 2023
Ajay is a seasoned cloud solution architect with over ten years of experience at AWS, Microsoft, and Oracle. He excels at designing cloud-native architecture, migrating and modernizing on-premise to cloud applications, and leveraging landing zones, cloud adoption frameworks, security, and governance. Ajay has strong database knowledge with Java, Python, and shell scripting skills. He enjoys working with success-focused people and on inspiring projects.
Portfolio
Teradata
Cloud Security, Cloud Native, Integration, Cloud, Infrastructure as Code (IaC)...
Microsoft
Architecture, Azure Cloud Services, Cloud Security...
Amazon Web Services (AWS)
AWS Cloud Architecture, AWS Database Migration Service (DMS)...
Experience
Availability
Part-time
Preferred Environment
AWS Cloud Architecture, Cost Reduction & Optimization, Azure Cloud Services, AWS IoT
The most amazing...
...document I've developed is a reference architecture guide for deploying Teradata Vantage VaaS on the cloud and became the company's go-to guide.
Work Experience
Principal Architect - Director
2022 - PRESENT
Teradata
- Created a reference architecture guide for deploying Teradata Vantage on AWS, Azure, and Google Cloud. Maintained the reference architecture guide up-to-date with new Teradata and CSP announcements.
- Wrote a reference document simplifying on-premise to cloud connectivity via VPN, Direct Connect, Transit Gateway, and Express Route.
- Developed a well-defined method for conducting architecture reviews for Teradata solutions deployed in the cloud. This helped to reduce architectural errors and improve quality.
- Created a guide on leveraging S3 with Vantage Cloud to unlock use cases in financial and eCommerce, focusing on the user journey and analytics around it.
- Designed a portal for cloud architects that listed all the content being created and consumed by sellers in the company.
- Rebuilt the strategy around optimizing cost for vantage Cloud deployment on AWS.
Technologies: Cloud Security, Cloud Native, Integration, Cloud, Infrastructure as Code (IaC), Security
Senior Solution Architect
2020 - 2022
Microsoft
- Designed an application modernization workshop and hackathon for a partner to conduct for their customers.
- Collaborated with a partner to develop Azure offerings such as Well-Architected Review, Landing Zone, and Cost Optimization and list them on the Azure market place.
- Expanded multiple requests, such as RFP and RFI, to build solutions on Azure, such as SAP workloads.
Technologies: Architecture, Azure Cloud Services, Cloud Security, Cost Reduction & Optimization, Database Design, Python 3, Azure, Python, Infrastructure as Code (IaC), Security
Solution Architect
2014 - 2020
Amazon Web Services (AWS)
- Delivered multi-day technical workshops, led whiteboarding sessions, executed proofs-of-concept, and contributed to developing performant, scalable, secure, and highly available AWS solutions.
- Exhibited technical vision and acumen, creativity, and great AWS skills by designing and developing industry and vertical solutions.
- Supported customers during launch events or sales days on eCommerce sites such as www.snapdeal.com and www.delhivery.com.
Technologies: AWS Cloud Architecture, AWS Database Migration Service (DMS), Cost Reduction & Optimization, Cloud Security, Integration, Cloud, Cloud Native, Architecture, Infrastructure as Code (IaC), Security
Senior Solution Consultant
2012 - 2014
Oracle
- Designed the database architecture for high availability and performance using Oracle RAC.
- Contributed to the design of database architecture for railways for freight management, parcel management system for performance, and backup and recovery architecture.
- Conducted a workshop for partners on the Oracle database and MySQL and assisted them in developing SOPs for deploying the Oracle database.
Technologies: Databases, Database Design, Database Modeling, High Availability Disaster Recovery (HADR), Database Replication, Linux, Windows, Security
Senior Database Administrator
2010 - 2011
Aditya Birla Group
- Supported the database fleet that powers the SMS platform of Sybase 365, now SAP mobile.
- Upgraded from Oracle 9i to Oracle 10g, both RAC and non-RAC.
- Conducted performance testing, designed the backup and recovery of all databases, and implemented them to keep them highly available.
Technologies: Databases, Database Design, Database Schema Design, Linux, Windows, Database Performance
Senior Oracle DBA
2009 - 2010
Emcredit Limited
- Wrote scripts to manage Oracle, MS SQL Server, and MySQL databases and monitored the alert log for errors.
- Tuned database performance and wrote scripts to identify potential index issues.
- Participated and contributed to the development of a database schema for application design.
Technologies: Databases, Database Design, High Availability Disaster Recovery (HADR), Linux, Windows, Unix Shell Scripting
Senior Oracle DBA
2008 - 2009
Du
- Assisted with the design and implementation of RDBMS-based solutions for internal customers.
- Contributed to the continuous improvement of the RDBMS environment to ensure the highest availability, security, and performance of RDBMS servers and related systems.
- Contributed to the efficient operation of the team, strengthened the team's technical capability, and shared knowledge with other team members.
Technologies: Database Design, Database Modeling, Database Performance, Linux, Unix, Windows, High Availability Disaster Recovery (HADR)
Principal Consultant for Oracle DBA
2007 - 2008
Colt
- Oversaw Netezza 10100 and 10200 performance server support and maintenance.
- Created and maintained UNIX/Windows monitoring scripts.
- Defined and implemented key backup strategies for critical and non-critical RDBMS environments. Conducted regular RDBMS patch updating.
Technologies: Oracle Database, Oracle Data Guard, Oracle RAC
Experience
Online Job Portal
https://unnati.gov.in/I built the portal using a serverless approach on Azure. It is a labor-matching platform that bridges the gap between job seekers looking for work and job providers looking for workers by utilizing a robust open source technical architecture.
Architecture Optimization
I designed scripts in Python, which run in an AWS account and generate CSV files to optimize costs on regular AWS. We saved more than $2 million for customers in total.
Education
2022 - 2023
Master's Degree in Computer Science
Swami Vivekanand Subharti University - Meerut, India
Certifications
JUNE 2022 - JUNE 2025
AWS Solutions Architect - Professional
Amazon Web Services
MARCH 2021 - PRESENT
Microsoft Certified: Azure for SAP Workloads Specialty
Microsoft
FEBRUARY 2021 - PRESENT
Microsoft Certified Solution Developer
Microsoft
JUNE 2018 - PRESENT
Microsoft Certified Professional
Microsoft
NOVEMBER 2009 - PRESENT
Oracle Certified Professional
Oracle
Skills
Tools
Oracle RAC
Platforms
Amazon Web Services (AWS), Azure, Cloud Native, AWS IoT, Linux, Windows, Unix, Oracle Database
Paradigms
Database Design
Languages
Python 3, Python
Storage
Azure Cloud Services, Databases, Database Modeling, Database Replication, Oracle 10g, Database Performance
Other
Cloud Security, AWS Cloud Architecture, Cost Reduction & Optimization, AWS Database Migration Service (DMS), Consulting, Architecture, Integration, Cloud, Infrastructure as Code (IaC), Security, High Availability Disaster Recovery (HADR), Database Schema Design, Unix Shell Scripting, Oracle Data Guard
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