Open to opportunities

Ahmad Wahaj

@ahmadwahaj1

I’m a Senior full-stack engineer scaling AI-driven SaaS and high-concurrency platforms with cost-optimized microservices.

Germany

Message

What I'm looking for

I’m looking to build and scale AI-driven SaaS with high concurrency—focusing on reliability, faster deployments, and cost-optimized microservices—while collaborating with cross-functional teams to deliver measurable product impact.

I’m a Senior Full-Stack Engineer with 6+ years architecting high-concurrency SaaS platforms and AI-driven infrastructure. I’ve scaled systems to 2M+ requests per minute, reduced production crashes by 78% with event-driven error handling, and improved reliability to reach 99.9% uptime while optimizing infrastructure cost through microservices.

I lead cross-functional teams to deliver 0-to-1 products and modernize legacy systems. From building NestJS/Next.js AI platforms and modular React/Next.js component libraries to optimizing LLM response streaming and end-to-end Jest/Playwright CI/CD, I focus on resilient design, measurable performance gains, and engineering velocity.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Turing

Jan 2024 - Present (2 years 5 months)

Architected a NestJS/Next.js AI-platform foundation, reducing production crashes by 78% through event-driven error handling and service-layer refactoring. Integrated Playwright and Jest pipelines to cut regression bugs by 45% and optimized LLM-response streaming to improve perceived UI performance by 30% for agentic workflows.

NestJS Next.js React TypeScript Playwright Jest Event Driven Architecture CI CD

Senior Software Engineer

Buggcy

Jan 2022 - Jan 2024 (2 years)

Led a 7-person cross-functional team to ship four major SaaS modules while increasing average sprint velocity by 20% YoY. Improved API response times by 35% using PostgreSQL query partitioning and Redis caching, and automated 90% of database maintenance tasks to reclaim 15+ engineering hours per week.

PostgreSQL Redis Partitioning Caching SaaS Development Team Leadership Code Review Technical Documentation

MERN Developer

InvoZone

Jan 2019 - Jan 2022 (3 years)

Architected and launched 10+ scalable systems for healthcare and AI, delivering projects 15% ahead of schedule. Built responsive, accessible React interfaces (improving engagement by 25%) and integrated Stripe and PayPal to support secure e-commerce payment flows.

React Redux Responsive UI Web Accessibility Stripe PayPal