Ragib Hasan
Senior Software Engineer & Technical Architect
Specializing in Multi-Tenant SaaS • Microservices • Cloud Infrastructure
Experience
5+ years building scalable systems and leading engineering teams
Leading full-stack architecture and project management for e-commerce platforms.
- •Leading ZOYEQ SaaS platform serving hundreds of active stores with full project ownership
- •Architected scalable microservices infrastructure with Redis caching layer
- •Built automated CI/CD pipeline reducing deployment time by 60%
Architected ERP systems for Bangladesh's largest electronics distributor.
- •Built ERP system processing 10,000+ daily orders
- •Designed multi-organization architecture with data isolation
- •Reduced manual reporting work by 75%
Built and optimized Learning Management Systems.
- •Delivered LMS platform serving 10,000+ students
- •Reduced server costs by 35% through optimization
- •Led team expansion and mentored junior developers
Web Developer
atClimax ITFull-stack development and system integration.
- •Delivered multiple client projects on time
- •Implemented secure payment gateway integrations
Started career in enterprise software development.
- •Built database management systems
- •Learned enterprise development practices
Engineering Deep Dive
Technical writing on architecture decisions and lessons from production
Architecting for N-Tenants: Solving Database Connection Exhaustion in Node.js
How we scaled from 300 to N tenants without adding infrastructure. The fix? Replace eager connection initialization with lazy loading, promise caching, and LRU eviction.
More engineering insights coming soon
Remote Work Ready
Equipped with the infrastructure, skills, and mindset to thrive in remote-first environments. Proven ability to deliver enterprise-grade systems independently.
Global Collaboration Ready
Experienced in coordinating with distributed teams and stakeholders
Flexible Schedule
Available for overlapping hours with US/EU/APAC time zones
Clear Communication
Strong written and verbal skills for effective async collaboration
Reliable Setup
Dedicated home office with fiber internet (100Mbps+) and backup power
Remote Tools Proficient
Proficient with Slack, Zoom, Jira, GitHub, Notion, Linear
Self-Driven
Proven track record of delivering complex projects independently
Open to Remote Opportunities Worldwide
Available for full-time positions • Can start within 2-4 weeks • Open to relocation for the right opportunity
Technical Expertise
Comprehensive full-stack capabilities spanning architecture design, cloud infrastructure, monitoring, and team leadership across the entire software development lifecycle.
Backend & Architecture
Databases & Storage
Cloud & DevOps
Monitoring & Observability
Frontend & Tools
Message Queues & Integration
Passionate about building robust, scalable systems and leading engineering teams to deliver exceptional results through technical excellence and collaborative leadership.
Technical Leadership
End-to-end project ownership from architecture design to deployment, leading cross-functional teams and delivering scalable solutions.
ZOYEQ - Multi-Tenant E-Commerce SaaS Platform
Technical Lead & Chief Architect (Solo Backend & Infrastructure)
Enterprise-grade multi-tenant SaaS platform enabling businesses to launch white-label multi-vendor marketplaces. Single-handedly architected and built complete backend infrastructure (6 microservices) from concept to production, designed for 100,000+ tenant scalability with separate database per tenant. Integrated AI (Google Gemini) for automated content generation, 3 payment gateways (SSLCommerz, bKash, Stripe), and comprehensive monitoring stack (Prometheus, Grafana, Loki).
Key Achievements
Technology Stack
EBS - Enterprise Resource Planning
Technical Lead & System Architect
Full-scale ERP solution architected for DX Group, Bangladesh's largest electronics distributor, handling complex supply chain and inventory management.
Key Achievements
Technology Stack
Ticketing & Event Management Platform
Full-Stack Developer & Technical Lead
Scalable ticketing platform with real-time seat selection, payment processing, and comprehensive event management capabilities.
Key Achievements
Technology Stack
Publications
Research contribution in modern video game development and optimization
Published in Lecture Notes in Networks and Systems • Springer, Singapore
January 2020 • Conference Paper
Introduced methodology to optimize 3D mesh for wide hardware compatibility, demonstrating significant performance improvements through poly count reduction.
Contact
Let's discuss opportunities, collaborations, or technical challenges