Senior Backend Engineer - Node.js, AWS & Payment Integration Expert
Hi, I'm Atikur, a Senior Software Engineer with proven experience building scalable SaaS platforms from scratch.
What I Offer:
- Backend Development
- Node.js, Express, Fastify
- RESTful APIs and webhook systems
- Complex database architecture (MongoDB, PostgreSQL, MySQL, Redis)
- Queue systems with BullMQ & SQS for reliable processing
Payment Integration
- Stripe (including Stripe Connect for multi-tenant)
- PayPal (including PayPal Partner)
- Secure transaction handling and compliance
AWS Infrastructure
- EC2, S3, CloudFront setup and optimization
- Lambda functions and EventBridge automation
- SQS message brokers
- SES/SNS for email delivery and tracking
Multi-tenant Architecture
- Custom domain solutions
- Scalable SaaS platforms
- Role-based access control
Third-party Integrations
- Slack notifications and automation
- Email template systems
- Analytics (Mixpanel, Google Analytics, PostHog)
Message me to discuss your projects requirements!