Available to hire
I’m Ali Alibrahimi, a senior full-stack engineer who designs and operates fintech and SaaS platforms. I specialize in React, TypeScript, and backend systems that handle real-time data pipelines, payments, and OAuth-based integrations in regulated environments.
I take pride in owning architecture, scalability, and reliability, and I enjoy leading cross-functional teams to ship robust, customer-facing solutions. My focus areas include system design, data modeling, and driving technical excellence from conception through deployment across both frontend and backend domains.
Skills
Experience Level
Expert
Expert
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Intermediate
Language
English
Fluent
Arabic
Fluent
Spanish; Castilian
Fluent
Work Experience
Senior Full-Stack Engineer (Tech Lead) at Simplicity Funds LLC
March 1, 2024 - PresentLed OAuth 2.0 authentication and Plaid API integration across 11,000+ financial institutions with fault-tolerant token refresh and webhook processing, achieving 99.8% uptime. Designed normalized PostgreSQL schemas with ACID compliance, transactional consistency, and full auditability for regulated financial data. Owned the design and implementation of Stripe-based subscription and billing infrastructure with idempotent webhook handling, retry-safe job processing, and automated lifecycle management. Implemented fault-tolerant payment recovery using circuit breakers and exponential backoff, reducing payment failures by 85%. Built a real-time analytics dashboard with ML-based expense categorization, financial forecasting, and AI-powered spending insights using optimized state management. Led cross-functional engineering decisions, established standards and deployment workflows. Migrated from Tauri to Next.js, evaluating SSR/CSR trade-offs, resolved hydration errors, and reduced load time
Lead Software Engineer at CodeWith Ali
January 1, 2021 - February 1, 2024Architected a multi-tenant SaaS platform with real-time messaging, scheduling, and financial dashboards on an event-driven architecture with eventual consistency. Implemented RBAC with secure authentication and granular permissions achieving zero unauthorized access. Built real-time data synchronization using PostgreSQL subscriptions and WebSockets with back-pressure handling and automatic reconnection. Designed conflict resolution strategies for distributed state management achieving sub-200ms latency with zero data loss during network partitions. Developed automated PDF invoice generation with dynamic data population, reducing manual work by 80% and eliminating billing errors. Established monitoring and alerting infrastructure with cross-functional stakeholder collaboration, reducing incident response time by 70%.
Education
Bachelor of Science in Computer Science at Grand Canyon University
January 11, 2030 - June 1, 2024Associate of Arts in Computer Information Systems at Mission College
January 11, 2030 - May 1, 2022Qualifications
Industry Experience
Software & Internet, Financial Services, Professional Services
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
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Intermediate
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