End-to-End Lead Full-Stack Engineer
YC Startup School Alumnus

I’m a full-stack engineer with 4+ years of experience building and scaling production SaaS platforms across fintech and charities. I specialize in owning systems end-to-end—from architecture and backend infrastructure to frontend delivery and deployment.

• Architected and scaled a multi-tenant SaaS platform processing CA$88K+ in donations
• Designed a Stripe Connect system (managed accounts, subscriptions, webhooks) with 100% payout accuracy
• Automated lifecycle management of 500+ SSL certificates using Let’s Encrypt (ACME), reducing manual overhead by 95%
• Built high-concurrency background processing systems (Sidekiq + Redis) handling 1,000+ jobs without database contention
• Implemented Role-Based Access Control (RBAC) with strict multi-tenancy across 7+ user roles

Backend: Ruby on Rails, Node.js, Express.js, PostgreSQL, Redis
Frontend: React, JavaScript (ES6+), Tailwind CSS
Infrastructure & Integrations: Stripe Connect, Let’s Encrypt (ACME), SendGrid, REST APIs
Testing & Delivery: RSpec, Capybara, GitHub Actions (CI/CD), TDD

Apr 2025 – Apr 2025

• Developed a full-stack MERN job platform demonstrating system architecture and scalable design
• Implemented secure dual-role JWT authentication for Job Seekers and Employers
• Architected AWS-ready file upload pipelines for resumes and document management
• Designed responsive UI components and optimized RESTful API endpoints for sub-second data rendering

View on GitHub

• Expanding into MERN-based architectures and system design patterns
• Exploring LLM integrations for product and automation use cases

• LinkedIn: https://linkedin.com/in/mike-lead
• Email: adesanya1ademola@gmail.com