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upworkrank#140in MySQL · Top 0.98%
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$6.4k
MRR
est. monthly
#3,398
World rank
of 1,045,565
$600k
Lifetime earnings
since 2013
58
Total jobs
completed
About
🚀 Senior Back-End Engineer & Tech Leader (14+ yrs) — I help businesses build scalable, secure, and high-performance systems that handle millions of users and requests with ease.
✅ Delivered 50+ successful projects across healthcare, fintech, ed-tech, real estate, government, and non-profit sectors.
✅ Scaled apps from 1K → 1M+ daily requests and platforms from zero → 1M+ users.
✅ Trusted by global companies including Upwork (NASDAQ: UPWK), Letshego (Botswana Stock Exchange), OCO Global, and multiple startups worldwide.
If you need a reliable partner who can architect solutions from scratch or optimize existing systems for performance, security, and scale — let’s talk.
Do you like Upwork's Reports & Time tracking feature? I am one of those developers who built that :)
✅ How can I help you
✓ I can handle your all end-to-end requirements analysis, UX, development, testing & delivery so you can focus on your sales & operations
✓ I can extend/develop your MPV product to production-ready
✓ I can develop products from scratch until the final delivery and support with maintained code quality and proper code coverage
✓ I can maintain your currently live products in the most optimum way by keeping quality and customer experience at first place in mind and with the minimum team and can save your cost
✓ I can choose the right technology stack and tools for your solution based on real needs and can save costs
✓ I can manage the team, do code reviews, handle CI/CD and releases, support live systems
✓ I can understand and implement the most difficult parts of software systems at very large-scale platforms like Upwork, (I am one of the Upwork platform devs)
✅ Expert areas
Java based back-end frameworks like Spring Modules (Spring MVC, Spring Security, Spring AOP, Spring Rest, Spring Data/JPA) & ZK (Zkoss)
ECMS implementation with Alfresco Content Services 4.x, 5.x, 6.x and Alfresco Process Services (Activiti)
RDBMS (MySQL, PostgreSQL, Oracle)
Graph/Document Databases MongoDB and DynamoDB
Web Crawlers with all features
Microservices based architecture implementation with Spring boot, Spring Integration and Apache Camel
AWS experience with RDS, SQS, SNS, SES, S3, and EC2 Instances
AWS API implementation experience
Queue based implementations with ActiveMQ/SQS
RankingsRanked by estimated monthly revenue across every population this profile competes in: worldwide, its country, and each Upwork skill.
Where Vishal Z. ranks by monthly revenue, worldwide, in India, and in every Upwork skill it competes in.
World#3,398 / 1,045,565Top 0.32%
India#386 / 151,112Top 0.26%
MySQL#140 / 14,305Top 0.98%
Java#104 / 11,118Top 0.94%
Amazon DynamoDB#14 / 718Top 2%
JUnit#6 / 394Top 2%
PostgreSQL#205 / 16,082Top 1%
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Freelancer snapshot
On Upwork since2013
Rating100% Job Success
Skills tracked5
Skills
MySQLJavaAmazon DynamoDBJUnit
Vishal Z. works mainly in MySQL, ranking top 0.98% of freelancers in that skill.
MRR trendSoon
Last 12 weeks
Coming soon
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Who ranks just above and below by MRR across all freelancers.
This freelancer is #3,398 of 1,045,565 across all freelancers.
Experience with implementing very complex queries with MySQL db
Java based Servers Tomcat/JBoss
Repositories like Git, SVN, P4V(Perforce)
✅ What my clients says (You may check in Work History)
⭐⭐⭐⭐⭐ "Vishal is best developer I have worked with till date. He is prompt responsive, an incredible problem solver, very professional, highly skilled and great team leader. He handles our portal continuous development including all project phases starting from requirement gathering(calls), task creation with all details, estimation, development, deployment on all environments, testing, creating wiki pages, choose right technology stack and AWS resources and manage tickets! He is handling dev team and also do development himself and supports everyone. Will certainly work with him again when we restart the project development! Highly recommended developer."
👤 Hugo Galicia ( CEO @ chicagodealvault.com )
⭐⭐⭐⭐⭐ "It was a highly positive experience working with Vishal. He was conscientious, always doing his due diligence to clarify any uncertainties before starting work. He gives accurate estimates of effort/time required for work, and either delivers on time or early. Overall a very reliable and dependable worker. We hope to work together with him soon. Highly recommended!"
👤 Dominik Bieringer ( CEO @ Kandu )
⭐⭐⭐⭐⭐ "Vishal is an excellent java engineer, with great business logic, self-motivated, with deep technical knowledge. He jumped right in and understood the current project architecture with minimum KT and limited documentation. He is always eager to solve new issues. I highly recommend him and will definitely work with him again, if opportunity permits. A pleasure to work with"
👤 Chris Adams ( CEO @ eDataSource )
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