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I'm Husna Hassan, a Full Stack Product Engineer with 3+ years of experience building scalable production systems in fast-paced startups. I specialize in microservices architecture, serverless-to-Kubernetes migrations, PostgreSQL optimization, and React/Node.js/Java stacks. I consistently deliver high-quality solutions through automation, CI/CD, and secure coding practices that reduce costs by 40%+, cut latency by 75%+, and support 5,000+ users.…I'm Husna Hassan, a Full Stack Product Engineer with 3+ years of experience building scalable production systems in fast-paced startups. I specialize in microservices architecture, serverless-to-Kubernetes migrations, PostgreSQL optimization, and React/Node.js/Java stacks. I consistently deliver high-quality solutions through automation, CI/CD, and secure coding practices that reduce costs by 40%+, cut latency by 75%+, and support 5,000+ users.

Husna Hassan

Full Stack Developer, Web Developer, Front-End Developer, +2

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I'm Husna Hassan, a Full Stack Product Engineer with 3+ years of experience building scalable production systems in fast-paced startups. I specialize in microservices architecture, serverless-to-Kubernetes migrations, PostgreSQL optimization, and React/Node.js/Java stacks. I consistently deliver high-quality solutions through automation, CI/CD, and secure coding practices that reduce costs by 40%+, cut latency by 75%+, and support 5,000+ users.…I'm Husna Hassan, a Full Stack Product Engineer with 3+ years of experience building scalable production systems in fast-paced startups. I specialize in microservices architecture, serverless-to-Kubernetes migrations, PostgreSQL optimization, and React/Node.js/Java stacks. I consistently deliver high-quality solutions through automation, CI/CD, and secure coding practices that reduce costs by 40%+, cut latency by 75%+, and support 5,000+ users.

Available to hire

I’m Husna Hassan, a Full Stack Product Engineer with 3+ years of experience building scalable production systems in fast-paced startups. I specialize in microservices architecture, serverless-to-Kubernetes migrations, PostgreSQL optimization, and React/Node.js/Java stacks.

I consistently deliver high-quality solutions through automation, CI/CD, and secure coding practices that reduce costs by 40%+, cut latency by 75%+, and support 5,000+ users.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

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Expert

Expert

Expert

Work Experience

Full-Stack Engineer at Shaqqo

January 1, 2025 - November 1, 2025

Architected end-to-end stack (React Native frontend, Node.js/GraphQL backend with Java/Spring Boot integrations, PostgreSQL + Redis) on AWS Lambda; migrated to ECS/Kubernetes to eliminate cold starts and support 5,000+ users. Designed and implemented microservices (auth, jobs, messaging, notifications) with Redis pub/sub; enabled independent scaling and reduced cross-service debugging time. Optimized PostgreSQL with composite indexes, query rewrites, and connection pooling; reduced report generation time from 8 minutes to 45 seconds and cut database load 60%. Implemented Redis caching for job listings, sessions, and unread counts; decreased API response time from 4 seconds to under 1 second and reduced overall database queries 60%. Configured Datadog observability with alerts on error rates, latency, and memory; detected and resolved critical memory leak in background jobs before production impact.

Software Engineer at August Leber Rohstoffe

January 1, 2025 - September 1, 2025

Developed and enhanced ERP system using React, Java, and PostgreSQL; refactored components and optimized queries for improved performance and usability. Implemented containerization and GitLab CI/CD pipelines; ensured seamless integration, deployment, and system scalability. Collaborated on DevOps initiatives to maintain reliability and workflow efficiency for internal operations.

Web Developer at LetsFullstack

January 1, 2022 - January 1, 2024

Delivered 8 production applications across Node.js/Python stacks; met enterprise SLAs with zero major outages. Built real-time analytics dashboard with React, Node.js, WebSockets, Redis; processed 10,000+ daily events without overload. Delivered production-ready features in agile teams; contributed to code reviews, testing, and continuous integration to maintain code quality.