Sheryar Ahmed
Full-Stack Engineer
"I ship fast without breaking things."
Full-stack engineer with 3+ years turning complex requirements into production systems that scale.
- ✓Built platforms serving 7,000+ users across healthcare, fintech, and social domains
- ✓Shipped 6-week MVP to production with scalable architecture
- ✓500+ LeetCode problems solved - strong algorithmic foundation
- ✓Optimized APIs for 40% performance improvement
Core Technologies
Impact at a Glance
Proven track record of delivering high-impact solutions that scale
Code Optimizations
Real improvements from production systems
N+1 query problem causing 2.5s load time
// ❌ N+1 Query Problem
const users = await User.findAll()
for (const user of users) {
user.posts = await Post.findAll({
where: { userId: user.id }
})
}
// Result: 2500ms for 100 users// ✅ Eager Loading
const users = await User.findAll({
include: [{
model: Post,
as: 'posts'
}]
})
// Result: 180ms for 100 usersExperience
Full Stack Engineer
Raumdeuter • Oct 2025 - Present • Germany
- • Re-architected platform to single-tenant model, improving scalability and isolation
- • Developed community features with engagement tracking and gamification system
- • Refactored legacy codebase, improving maintainability and reducing technical debt
- • Optimized performance across frontend and backend, enhancing user experience
Full Stack Engineer
Appsologix • Jun 2024 - Sep 2025 • 1yr 4mo
- • HealthSIA: Built perioperative care platform for 5,000+ users with role-based dashboards, real-time chat, and patient tracking. Improved API response by 40%, backend efficiency by 35%
- • Peepskill: Delivered social media MVP in 6 weeks for 2,000+ users with media feeds, nested comments, and RBAC. Reduced DB query load by 35%, improved UX by 40%
- • Royal Vision Dubai: Engineered complete booking platform with 25+ modules including payments (CCAvenue), SEO, and reviews. Boosted SEO by 40%, reporting speed by 50%
- • Led CI/CD integration with Docker and GCP deployments across all projects
Full Stack Engineer
Oqvest • Jun 2023 - Oct 2023 • 5mo • United States
- • Built three backend projects for mortgage loan platform using React, Node.js, MySQL
- • Integrated AWS services (EC2, S3, RDS) and Google Drive API for document management
- • Implemented CI/CD pipelines with Jenkins and GitHub Actions
- • Deployed containerized applications using Docker and Nginx on Contabo servers
Software Engineer
Z2A Tech • Sep 2021 - Sep 2022 • 1yr 1mo
- • Developed React.js applications improving user experience by 20%
- • Implemented Redux state management for scalable and maintainable codebases
- • Migrated websites to AWS, improving performance and reliability
- • Built award-winning GatsbyJS website with the engineering team
Technical Approach
Architecture
Design systems for maintainability and scale. Favor composition over inheritance. Keep services small and focused. Use the right tool for the job.
Delivery
Ship early, iterate fast. Comprehensive testing. Gradual rollouts. Monitor everything. Learn from production.
Collaboration
Clear documentation. Code reviews that teach. Cross-functional alignment. Share context widely. Default to transparency.
Impact
Understand business goals. Measure what matters. Optimize for user value. Balance speed and quality. Own outcomes, not output.
Skills & Technologies
A comprehensive overview of my technical expertise across the full stack
Selected Projects
Building scalable systems that serve thousands of users
.jpeg?height=400&width=800)
HealthSIA
A patient–therapist–surgeon communication and perioperative care platform with role-based dashboards and real-time chat.
Platform adopted across multiple clinics, improving patient engagement and care coordination
Reduced API response time by ~40%
Streamlined clinical workflows and operational efficiency
.png?height=400&width=800)
Peepskill
A sports-focused social networking platform with role-based profiles, feeds, connections, and content moderation, serving 2,000+ early users.
Successful MVP adoption by 2,000+ early users
Reduced DB query load by ~35% through optimization
Enabled admins to moderate 100% of reported posts and users
Engineering Journal
Deep dives on system design, performance optimization, and lessons from building production systems
Case Study: Optimizing Database Queries for 40% Performance Gain
How we reduced API response times by 40% through systematic database optimization in a production healthcare platform serving 5,000+ users.
Building Production-Ready Real-Time Chat: Architecture & Trade-offs
Deep dive into architectural decisions, trade-offs, and lessons learned while building a scalable real-time chat system for healthcare.
Scaling Real-time Features: WebSockets vs Server-Sent Events
Real-time features have become essential for modern web applications. Whether it's live chat, notifications, collaborative editing, or live updates, users expect instant feedback.
Let's Work Together
I'm always interested in new opportunities and exciting projects. Let's discuss how we can build something amazing together.
Get in touch
I'm currently open to new opportunities and interesting projects. Whether you're looking for a full-time engineer, consultant, or just want to chat about technology, I'd love to hear from you.
Response Time
I typically respond to messages within 24 hours. For urgent matters, feel free to reach out via LinkedIn.