Fix your slow SaaS.
Without rewriting everything.
I help SaaS teams eliminate performance bottlenecks and technical debt. Senior frontend engineer specializing in performance-critical systems. Worked on platforms serving millions of users across SaaS, e-commerce, and global connectivity. Reduced bundle sizes by 40%, improved Core Web Vitals by 30%, with zero downtime deployments.
Trusted by Performance-First Teams
Proven Results
Multi-Tenant SaaS Performance Overhaul
Eliminated performance bottlenecks for a veterinary management platform serving 100+ clinics without touching the database schema or rewriting core business logic. Cut initial load time by 40% and reduced customer churn by 23%.
- 40% Faster Initial Load
- 23% Reduction in Customer Churn
- Zero Database Migrations
60K-User Platform Migration Without Downtime
Modernized a global connectivity platform from Angular 8 to Angular 17 across 100 countries while shipping new features every sprint. Reduced deployment cycle time by 25% and improved developer velocity by 40%.
- 35% Faster Page Loads
- 25% Faster Deployment Cycles
- 40% Boost in Developer Velocity
Offline-First Booking System for Rural Clinics
Built an embeddable appointment scheduler that works without internet and syncs automatically when connection returns. Enabled clinics in low-connectivity areas to process 3x more bookings and eliminated 92% of failed transactions.
- 95% Offline Reliability
- 3x Booking Volume Increase
- 92% Fewer Failed Transactions
Enterprise Translation Platform Quality Initiative
Improved code quality and test coverage for a global translation management system serving Fortune 500 clients. Reduced production bugs by 67% and cut QA cycle time from 3 days to 4 hours through comprehensive testing strategy.
- 85% Test Coverage Achieved
- 67% Reduction in Production Bugs
- 3 Days → 4 Hours QA Cycles
My Process
The Diagnosis
I start by measuring what matters. Load times, bundle sizes, render performance. Then I find where your app is wasting time and money.
The Architecture
Speed is not a hack. It is a side effect of good decisions. I refactor systems to be lean by design, not optimized as an afterthought.
The Automation
If it is not measured, it will regress. I build performance budgets and monitoring into your workflow so improvements stick.
What Teams Say About the Results.
Real feedback from CTOs and Founders who needed their performance bottlenecks solved.
"Ahmad is a brilliant developer and one of the best communicating engineers I've ever worked with. His expertise in modern front-end development is exceptional, and he consistently brings creative, high-impact solutions to the table. I'll absolutely be hiring him again for future projects. If you need an expert front-end developer who delivers results, Ahmad is your guy."
"Ahmad demonstrated exceptional ability to deeply understand complex codebases and architect effective solutions. He was instrumental in taking ownership of a project mid-flight and driving it to successful completion."
"Ahmad was a key technical contributor to our team, bringing deep expertise in modern front-end architecture and component-based systems. He consistently delivered production-grade, maintainable code and demonstrated strong initiative in identifying improvements and driving technical decisions. His communication was excellent, and he showed collaborative leadership throughout. We valued his professionalism and would confidently recommend him for complex front-end engineering projects."
"Ahmad has been an absolute asset to our project. He delivered the CrowdSky AI demo with precision, professionalism, and a deep understanding of both our technical vision and business goals. His ability to work independently while staying aligned with our brand direction made the process seamless. The final demo is polished, functional, and investor-ready — exactly what we needed. Ahmad is detail-oriented, communicative, and solutions-focused. We're grateful for his contribution and look forward to working with him again on future phases."
How to Work Together
Performance Audit
Find out where your app is bleeding speed, stability, or developer time.
What You Get
- Speed report with load time benchmarks and bottleneck analysis
- ROI breakdown showing cost of current performance
- Prioritized action plan ranked by impact and effort
- Detailed video walkthrough you can share with your team
Timeline & Guarantee
- Starts within 5 business days of booking
- Delivered in 7 days from kickoff
- Full refund if you don't get 3+ actionable improvements
Ideal For:
- Apps with 3+ second load times on mobile
- Teams losing users to performance (visible in analytics)
- Pre-funding technical due diligence
- Planning major optimization work
What happens next:
Book a 30-minute discovery call where we discuss your app, performance goals, and whether an audit makes sense.
Most teams complete the audit, then engage for implementation. Average project value: $15k-25k
Not sure which service fits your needs?
Email me at ahmedfiazjan@gmail.com or book a free 15-minute consultation call.
Not Just Code.
Systems.
Early in my career, I thought speed was about clever tricks. Minify this, cache that. Then I worked on a platform serving 100+ businesses with unique domains. Clever tricks did not scale.
I realized that performance is architectural. You cannot bolt it on. It has to be designed in. The right state management, the right rendering strategy, the right infrastructure decisions from day one.
Beyond the Technical
I've optimized apps for platforms serving 100+ businesses, e-commerce checkouts processing millions, and booking systems handling thousands of appointments daily. Different industries. Same problems. Same solutions.
Let me show you what your app is really costing you.
Slow app. Tech debt. Scaling issues.
Let's solve it together.