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Sayed M. Raihan
@meraihan
Spring Boot Java Developer
Bangladesh
English, Bengali
About me
I’m a backend-focused software engineer with 10 years of experience building enterprise systems in Java and Spring Boot. I’ve built core banking platforms, ISO-8583 card processing, and PCI-DSS compliant payment services, as well as cloud-native SaaS on AWS. As an AWS Certified Solutions Architect, I design and run production infrastructure end to end, from architecture to CI/CD. I’m also Odoo 19 certified, work across Node.js, PostgreSQL, MySQL, and MongoDB, and build AI-powered workflows with Claude, OpenAI, and n8n.
Skills
Sayed M. Raihan
Offline •
See my services
CRM & ERP Development
I will develop, customize, and integrate odoo modules as a certified developer
Portfolio
Work experience
Software Development Engineer
Your Business Automation Specialist • Full-time
Oct 2021 - Present • 5 yrs
At VoiceCradle LLC, I lead backend and cloud engineering for US-based products, from system design through production deployment. • Architected and built USAHomeBids, a US online property bidding platform for buyers, sellers, and real estate agents, using Java and Spring Boot • Own the full AWS infrastructure (EC2, RDS, S3, Lambda, Route53, Elastic Beanstalk) with automated CI/CD pipelines • Built a custom Amazon Connect contact center with chat, plus IntellCX, a real-time IVR analytics dashboard used by US operations teams • Integrated AI agents and automation using OpenAI, Claude, and n8n into production workflows • Implemented role-based access control (Spring ACL), scheduled jobs (Quartz), and third-party API integrations • Lead and mentor the engineering team, review code, and manage long-term product development
56 Reviews
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Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
1-5 out of 56 Reviews
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dyanatech
United States
Ongoing collaboration
Great work. We will definitely utilize his services in the future!
$100-$200
Price
1 day
Duration
Helpful?
dmanipa
South Africa
Really professional and easy to work with. Thank you very much for all your help and great quality work. Thank you!
$50-$100
Price
2 days
Duration
Seller's Response
Helpful?
elmi_adam
United Kingdom
Ongoing collaboration
great experience, very pleased with the quality of work that Sayed produced. It has great attention to detail, creativity and commitment to meeting my specific needs. Great communication throughout the project and the final result was excellent. Would highly recommend. A real professional.
$50-$100
Price
1 day
Duration
Helpful?
pawanmona
United States
Great freelancer. Understands the technology and integration well. He helped my team with security setup to ensure we can continue the development of the product. I will leverage his services again in the future.
$100-$200
Price
13 days
Duration
Helpful?
mohamedsaida
France
Great work
$50-$100
Price
4 days
Duration
Helpful?
