Kazem Mirzaei

• Building an internal business process automation platform on .NET, ABP Framework, and Elsa Workflows.
• Designed role-based approval flows with escalation timers, a shared task inbox, and append-only audit records for every decision.
• Built the user dashboard in Next.js on a separate read model with Redis caching, so list pages stay fast as approvals pile up.
• Wrote the team's engineering guidelines for .NET 10.

Tech stack: C#, .NET, ABP Framework, Elsa Workflows, EF Core, SQL Server, Redis, Hangfire, Next.js, React, K3s

• Built a multi-tenant SaaS from scratch where each tutor subscribes and gets a branded site, subdomain, and isolated database.
• Automated tenant and server provisioning with GitHub Actions and K3s, cutting setup time to under 10 minutes.
• Designed the Laravel API as stateless services so pods scale out during a tutor's launch campaign and back in afterwards.
• Moved FFmpeg video transcoding to dedicated nodes, keeping encoding load off the servers that handle student traffic.
• Split background jobs into priority queues so payments and notifications are never stuck behind long transcoding runs.
• Improved page speed and SEO on tenant sites with server-side rendering, image optimization, and per-tenant metadata and sitemaps.
• Set up Grafana dashboards and centralized logs to catch slow queries and failing jobs before tutors report them.
• Led the development team and worked with DevOps on release planning and the scaling strategy.

Tech stack: PHP, Laravel, Next.js, React, TypeScript, MySQL, Redis, Docker, K3s, GitHub Actions, FFmpeg, Grafana

• Built a Next.js web app for a bot service, including subscription flows and account dashboards.
• Delivered a partner panel where cooperators create campaigns and watch user activity in real time.
• Added admin activity logs, working directly with the product owner and design team.

Tech stack: Next.js, React, TypeScript

• Fixed performance and rendering problems in React components of a live production app.
• Shipped enhancements requested by the design team and connected them to the existing Laravel API.

Tech stack: React, TypeScript, Laravel

• Worked across the Expo app and the Node.js API of an AI health companion live on the App Store, merging 110+ pull requests in a distributed team.
• Rebuilt the in-app chat with the AI coach on Supabase Realtime, with infinite scroll, image and meal-log messages, and markdown replies.
• Built photo-based meal logging that turns a meal photo into macros on the daily nutrition tracker, plus weight tracking with charts.
• Built AI-generated meal plans and custom meals with LLM prompts and structured output schemas on Orq.ai, a nightly generation job, and debounced Realtime listeners that regenerate plans when users change their answers.
• Restructured the Express API into feature modules with file-based routing, Zod-validated endpoints, Swagger docs, and Vitest and Supertest tests.
• Added community threads with replies, likes, and filters, an in-app notification system, and daily check-ins with streaks and timezone-aware stats.
• Added Google and Apple sign-in through Supabase Auth, linking existing accounts to their new identities, and wrote Supabase migrations and row-level security policies.

Tech stack: React Native, Expo, TypeScript, Zustand, TanStack Query, Node.js, Express, Prisma, PostgreSQL, Supabase, Zod, Orq.ai, Vitest, Sentry, PostHog

• Completed 10+ full stack projects for international clients with a 100% Job Success Score.
• Rebuilt a yoga education platform for an influencer, migrating years of legacy student and course data into a new data model.
• Delivered its courses, payments, and a transcoding pipeline that prevents direct downloads of paid video.
• Added real-time notifications with WebSockets and Laravel Echo, with media uploads stored in S3.
• Reused the stateless deployment setup from earlier projects so the platform scaled out during campaign launches.

Tech stack: PHP, Laravel, Node.js, React, Next.js, WebSocket, Laravel Echo, S3, Docker, Kubernetes

• Led the build of a real-time health platform from scratch with Laravel, Go, and Next.js.
• Broke the original Laravel monolith into services, starting with the video transcoder, which was the heaviest workload.
• Rewrote the mission-scheduling algorithm as a Go service, with Go workers and queues running each user's mission lifecycle.
• Reduced the production Docker image from about 1 GB to under 400 MB with multi-stage builds, which made deploys and pod scale-out faster.
• Made the app servers stateless (sessions and cache in Redis, files in S3) so K3s could add pods during influencer campaign bursts.
• Tuned background jobs by separating queues by priority, batching notification sends, and adding retries with backoff for failed jobs.
• Built secure video streaming with multi-format encoding and blocked direct MP4 downloads to protect paid content.
• Improved the Next.js frontend's load time and SEO for the blog and course pages with server rendering, image optimization, and code splitting.
• Launched a smoking-cessation app on a trained AI model, with its own subscription plan alongside the core product.
• Shipped a community feed for progress photos with real-time notifications over WebSockets and Laravel Echo.
• Automated build and deploy to K3s with GitHub Actions.

Tech stack: PHP, Laravel, Go, Next.js, React, Redis, WebSocket, Laravel Echo, S3, Docker, K3s, GitHub Actions

• Cut page load time from about 8 seconds to under 1 second by refactoring the Next.js app.
• Audited the codebase, removed unused packages, and fixed dependency conflicts, which shortened build times.
• Repaired the Customer.io and PubNub chat integrations, then reduced the product's dependence on expensive third-party services.
• Reworked Stripe payments to support subscriptions and B2B payouts to service providers, with checks for billing edge cases.
• Localized the product into French, English, and Brazilian and European Portuguese, with currency picked by the visitor's location.
• Built an admin dashboard for mission states and user activity, with local pricing for each market.

Tech stack: Next.js, React, TypeScript, next-intl, Stripe, Customer.io, PubNub

• Built a location-aware marketplace from scratch that connects buyers with nearby producers and books same-day couriers.
• Owned the Laravel backend, Nuxt.js frontend, payments, and the separate admin and producer dashboards.
• Wrote backend logic test-first and set up CI/CD with Docker Compose deployments.
• Added PWA push notifications for order status and built the responsive UI with the design lead.

Tech stack: PHP, Laravel, Nuxt.js, Vue.js, Docker Compose, PWA

• Built reusable React and Material UI components with responsive, accessible layouts.
• Fixed a slow initial load by removing unnecessary re-renders in a deeply nested list component.

Tech stack: React, Material UI, JavaScript

• Co-founded a creator platform that paid writers by views and interactions through a built-in wallet.
• Built a Persian WYSIWYG editor on CKEditor with full right-to-left support.
• Added analytics dashboards, SEO, and image optimization to the Laravel backend.
• Ran the servers and deployments on Hetzner with Docker Compose.

Tech stack: PHP, Laravel, Nuxt.js, MySQL, Docker Compose, CKEditor

• Developed backend features in PHP and Laravel for production web applications.
• Added Redis caching for frequently read data to speed up responses.

Tech stack: PHP, Laravel, Redis, MySQL

• Designed the UI, logo, and branding for a stock market news app at Martal.
• Built PHP features at Behintek and responsive pages in HTML, CSS, and JavaScript at Hogon Group.
• Built WordPress sites for clients while at university.