Farhan Z

Software Platform Developer

Openscreen Inc. • Temps plein

Jun 2025 - Present • 11 mos

Full-Stack Cloud Engineer at Openscreen Inc., an enterprise QR code and digital engagement SaaS platform serving 500K+ touchpoints across 20+ countries. I redesigned the Jenkins CI/CD pipeline from scratch, reducing deployment time from 1 hour and 30 minutes to 10 minutes with parallel app, and stack deployment, CloudFormation hotswap, automated CDK artifact cleanup, and stack teardown with status fallback handling. I pinned critical dependencies to exact versions, eliminating 90% of unnecessary Lambda layer rebuilds, and built automated layer generation that reduced bundle size by 40%. On the infrastructure side, I stood up the full VPC stack with NAT Gateways for Lambda static IP egress and extended it with standalone Lambdas for a major telecom integration. I built event-driven workflows chaining SNS topics to SQS queues to Lambda consumers, and implemented cron jobs via EventBridge Scheduler for recurring tasks. I migrated a notification system from legacy DynamoDB TTL scheduling to EventBridge Scheduler, stabilizing delivery timing. I developed multiple serverless plugins and microservices exposing REST API endpoints for third-party integrations, identity verification, and real-time QR generation. I designed and shipped data migration scripts for S3 entity transforms and built new DynamoDB table schemas and entity layers to support evolving product requirements. For testing, I introduced a Lambda testing framework using Vitest and Faker.js, increasing backend test coverage by 40%. I enforced code quality by setting up ESLint monorepo configuration, reducing linting errors by 80%. On the frontend, I built a customer-facing portal with authentication and architected a plugin system in Next.js and React. Tech: Node.js 20+, TypeScript, AWS Lambda, DynamoDB, S3, SQS, SES, EventBridge Scheduler, VPC, CloudFormation, CDK v2, Jenkins, GitHub Actions, Next.js, React, Turborepo, pnpm, Vitest

Full Stack Engineer

Lambton College • Temps partiel

May 2025 - Dec 2025 • 7 mos

Just Sales Jobs Inc. (Mitacs Accelerate @ Lambton College) - Designed, built, and deployed the sales-recruitment web portal end-to-end. - Implemented AWS Lambda pipelines to host and serve AI/ML candidate-screening models. - Architected PostgreSQL schemas in AWS RDS and managed data migrations. - Leveraged S3 for scalable storage of resumes, profiles, and static assets. - Collaborated with academic & industry leads to validate model accuracy and UI/UX flows. - Migrated to Neon and optimzied AWS costs from $350 monthly to $20 while maintaining 3 fully working environments + database replicas.

Full Stack Developer

Shipshop • Temps plein

Jul 2023 - Nov 2024 • 1 yr 4 mos

Rebuilt the company’s e-commerce platform using Laravel (PHP), Blade templating, Javascript, and MySQL, resulting in 70% faster page loads, improved SEO performance, and a more intuitive, user-friendly experience. Architected a scalable, modular design, enabling easy feature expansions. Integrated multiple shipping carrier APIs (UPS, Canada Post, FedEx, USPS, ICS, Canpar) by leveraging the Strategy Pattern with clearly defined interfaces, ensuring extensibility and maintainability. Established a dedicated test environment and implemented comprehensive Quality Assurance processes, achieving 93%+ unit test coverage across backend and frontend components. This significantly reduced regressions, minimized production bugs, and ensured consistently high platform reliability and functionality. Migrated front-end architecture from PHP Blade to Next.js with JavaScript, achieving server-side rendering, improved SEO visibility, and reducing initial page load times by approximately 50%, which directly contributed to increased user retention. Containerized the application with Docker and deployed onto GKE, achieving high availability, seamless deployments, and approximately 35% cost savings by optimizing resource usage. Automated deployment processes by setting up robust GIT CI/CD pipelines, decreasing deployment time from hours to minutes, minimizing downtime, and significantly improving code stability and reliability. Optimized SQL database schemas, indexing, and queries, cutting down database response times dramatically, ensuring smooth platform performance during peak usage periods. Collaborated closely with the sales team to strategize and deploy targeted features, increasing overall website traffic and driving approximately 45% growth in sales conversions.