Max Katz
Full Stack Developer
Hey, I'm Max, a full stack developer who loves building clean, modern websites and apps where design, functionality, and even the smallest details matter, with a focus on making products that are both practical and visually satisfying.
Tech stack isn't my concern, I'm flexible with whatever the project needs, though I prefer modern frameworks and tools. I'm always open for new opportunities to learn and grow.
Experiences
ProxywingFull Time
Software Engineer
May 2025 - Present
Tbilisi, Georgia - Remote
- Implemented a unified payments system integrating 5 providers such as Stripe, PayPal, Cryptomus, Freekassa and others, with support for recurring subscriptions, usage-based billing, refunds, and internal balances – now processing over 50+ transactions daily
- Designed a modular micro-services architecture and drove the migration from a legacy monolith, introducing clear service boundaries, improving deployment speed and reliability, and enhancing maintainability and DX.
- Built RabbitMQ-based inter-service communication using a producer-consumer pattern to decouple backend and proxy servers’ core, enabling scalable asynchronous task handling and improving system reliability.
TypeScriptPythonPostgreSQLNext.jstRPCCloudflareDocker
Stealth
Full Stack Developer
Sep 2024 - Apr 2025
Tel Aviv, Israel - Remote
- Solely developed a large-scale full-stack admin dashboard (CMS) for a Web3 platform using React with Next.js, SSR and a custom Backend-for-Frontend (BFF) architecture, enabling advanced analytics, user/assets management, and complex access control.
- Implemented frontend real-time updates across analytics and management pages using WebSockets and Supabase PostgreSQL, providing live data visibility and instant synchronization for administrators.
- Owned the full development lifecycle, managing CI/CD pipelines, environment configuration, and production deployments, ensuring reliability and rapid iteration cycles.
TypeScriptReactNext.jsPayloadCMSBetter-authPostgreSQL
Freelance / OSS
Full Stack Developer
Dec 2021 - Sep 2024
Tel Aviv, Israel - Remote
- Engineered a secure, multi-chain crypto payment processing system integrated into a Telegram bot, supporting ETH, BNB, and Solana transactions; system now processes 20+ transactions daily.
- Migrated a 10GB+ SQLite dataset of Web3 transaction data to PostgreSQL redesigning schema, adding indexes, and query optimization — significantly improving performance and enabling proper scaling
- Integrated Redis caching in place of in-memory JS cache for high-read Express API endpoints, enabling shared cache across instances, preserving state, and significantly improving response speed
- Implemented centralized logs/performance monitoring using Grafana and Prometheus, improving visibility into service health and reducing debugging time
TypeScriptNode.jsPythonPostgreSQLMongoDBReactWeb3.js