.NET Core Backend Engineer

API & Web3 Integration Specialist

I build scalable backend systems, secure APIs, and blockchain-enabled applications for modern businesses. Specialized in ASP.NET Core, SQL optimization, third-party integrations, and Web3 solutions.

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.NET Core Backend Engineer Sheraz Aslam
Engineering Background

Designing Structured Backend Systems That Scale

I specialize in backend architecture and system integrations using .NET technologies. My focus is building scalable APIs, automation platforms, and structured business systems that remain stable as they grow.

I approach development with an engineering mindset — prioritizing clean architecture, performance optimization, and long-term maintainability. Every project begins with structure and clarity before a single line of production code is written.

Beyond code, I focus on business impact. Whether integrating biometric devices, automating workflows, or building secure APIs, the goal is always operational efficiency and reliability.

Clean & Maintainable Architecture
Secure & Scalable APIs
Automation-Driven Solutions
CLIENT REQUEST HTTP / WebSocket API GATEWAY JWT Auth · Rate Limit · Routing BUSINESS LOGIC ASP.NET Core Services INTEGRATION LAYER 3rd-Party · Device · Web3 SQL SERVER Optimized · Indexed · Secure
Core Services

What I Do Best

I build backend systems that power real businesses — from clean architecture and database performance to deep third-party integrations and production deployments.

Backend Architecture & API Development

I design scalable and maintainable backend systems using clean architecture principles and structured API design.

  • ASP.NET Core & Web API
  • RESTful API Design
  • Clean Architecture
  • SQL Performance Optimization

Automation & System Integrations

I build integration layers between devices, third-party services, and business platforms to automate workflows.

  • Biometric Device Integration
  • Payment Gateway APIs
  • Authentication Systems (JWT)
  • External Service Integration

Deployment & Server Configuration

I manage hosting environments and ensure backend systems are properly deployed, secured, and optimized.

  • Plesk & VPS Setup
  • Cloudflare Configuration
  • Domain & DNS Setup
  • Production Optimization
Portfolio

Selected Work

A selection of backend systems and automation platforms designed for scalability and performance.

01
attendance.dashboard.local
Enterprise Integration

Biometric Attendance Integration System

Manual attendance tracking was error-prone and slow across multiple locations. I built a real-time integration between ZKTeco biometric devices and a centralized SQL Server database, surfaced through a live web dashboard with automated reporting. Structured API architecture and query optimization ensure instant, reliable data flow — even at scale.

Real-time device synchronization 85% faster processing 500+ employees managed
ASP.NET Core SQL Server ZKTeco SDK SignalR REST API
View Case Study
02
crypto.platform.io/dashboard
Financial Platform

Crypto Informational Platform

Crypto investors needed a single source of truth for real-time prices and market analysis. I built a scalable platform integrating multiple exchange APIs for live price feeds, historical data, and portfolio tracking — with Redis caching and smart rate limit management to keep response times under a second at high traffic volumes.

10,000+ daily active users 99.9% uptime 1M+ API calls per day
.NET 8 PostgreSQL Redis Cache WebSocket React
Explore Project
03
healthcare.schedule.app
Healthcare Solution

Healthcare Scheduling Application

A healthcare facility was losing time and resources to manual nurse-patient scheduling, causing coverage gaps. I developed an intelligent scheduling engine with automated matching based on certifications, availability, and patient requirements — backed by real-time notifications, shift management, and compliance tracking.

70% scheduling efficiency gain 95% matching accuracy 200+ professionals managed
ASP.NET Core SQL Server Azure SignalR Blazor
View Case Study
04
tokenforge.web3.app
Web3 Platform

Token Creation & IPFS Metadata System

NFT creators faced a complex, fragmented process for deploying tokens and storing metadata. I built a comprehensive platform handling automated IPFS uploads, smart contract deployment, and on-chain transaction management — with wallet connectivity and multi-network support that reduced deployment time from hours to minutes.

50,000+ tokens deployed Minutes vs. hours to deploy 100% IPFS persistence
.NET Core Solidity IPFS Web3.js Solana
Explore Project
Why Work With Me

Built on Three Commitments

Every engagement is structured around these principles — because reliable systems require reliable processes.

Built With Scalability in Mind

I don't just write code — I design structured systems that can grow with your business. Clean architecture ensures your platform remains stable, maintainable, and ready for expansion.

Designed for long-term maintainability.

Clear Communication & Fast Response

You won't be left guessing. I maintain clear updates, structured documentation, and respond within 24–48 hours to keep projects moving smoothly.

Professional workflow. No chaos.

Focused on Real Business Outcomes

Every feature I build serves a purpose — improving automation, performance, or operational efficiency. I build systems that solve problems, not just features that look impressive.

Efficiency over complexity.
24–48 Hour Response Time
Clean & Documented Code
Structured Development Process
Long-Term Support Friendly
Client Feedback

Open for Collaborations

I'm available for long-term collaborations and exciting projects

I'm currently building strong relationships with clients and delivering exceptional results. If you've worked with me, I'd love to showcase your feedback here. Let's create something amazing together!

Ready to Start Your Project?

Let's discuss how I can help bring your ideas to life

Knowledge Sharing

Blog & Insights

Technical guides and development best practices

How to Integrate ZKTeco with ASP.NET Core

A comprehensive guide on integrating ZKTeco biometric devices with ASP.NET Core applications, covering SDK setup, data synchronization, and best practices.

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JWT Authentication Guide

Complete walkthrough of implementing secure JWT authentication in ASP.NET Core, including refresh tokens, claims-based authorization, and security best practices.

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Building Scalable REST APIs

Best practices for designing and implementing scalable REST APIs with ASP.NET Core, covering versioning, rate limiting, caching, and performance optimization.

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SQL Performance Optimization

Advanced techniques for optimizing SQL Server queries, including indexing strategies, execution plan analysis, and common performance pitfalls to avoid.

Read More →

Let's Build Something Great

Have a backend challenge or API integration need? Let's build something scalable and secure.

📧 Email Me 💼 LinkedIn 💬 WhatsApp 💻 GitHub

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