Sajjad Arif Gul

Senior Software Engineer & AI Solutions Engineer

I build production-grade AI systems and scalable enterprise applications on .NET — from systems serving 5,000+ users to sajjad.ai, an end-to-end multi-lingual AI platform.

About Me

Hi! I'm Sajjad Arif Gul, a Senior Software Engineer and AI Solutions Engineer with 10+ years of experience in full-stack development. I specialize in .NET Core, AI APIs integration, and scalable enterprise architectures. My passion lies in designing and shipping production-grade AI solutions, integrating advanced models like OpenAI, DeepSeek, and Ollama to solve real-world problems.

I recently architected and built sajjad.ai, a multi-lingual AI tools platform supporting document RAG, real-time chats, and code generation. I focus on Clean Architecture, high-performance database design (SQL, Redis, Vector DBs), and robust API systems.

Open to remote and onsite opportunities.

Explore Featured Project View Resume PDF

Featured Project

sajjad.ai Featured AI Project

An end-to-end, multi-lingual (English, Arabic, Urdu) AI-driven platform. Built from scratch, it supports real-time conversational chat, document/file-based interaction chat (RAG), and smart code/content generation. Integrated with OpenAI, DeepSeek, and local Ollama APIs.

.NET Core 8 ASP.NET Web APIs React (TypeScript) OpenAI API DeepSeek API Ollama (Local LLMs) RAG Architecture Vector DB Clean Architecture

Launch sajjad.ai System Architecture

Technical Skills

Artificial Intelligence

OpenAI, DeepSeek, and Ollama API integrations
Retrieval-Augmented Generation (RAG) & Vector Databases
Prompt engineering & agentic systems development

Backend Engineering

C#, ASP.NET (MVC, Core 8, Web APIs)
Entity Framework, Dapper, Clean Architecture
RESTful APIs, Microservices, and feeder systems

Frontend & Tools

React (TypeScript), Vue.js, Angular
HTML5, CSS3, Tailwind CSS, Bootstrap, JavaScript/jQuery
Git, SVN version control systems

Databases & Integration

SQL Server, MySQL database design & tuning
Redis caching, key-value storage
Payment Gateway Integrations (HyperPay, Payfort, Authorize.Net, etc.)

Experience

Senior Software Engineer | AI Solutions Engineer

October, 2023 — Present @ University of Business and Technology

Designed and built the digital infrastructure for the 19th Asia Pacific Conference on Giftedness (APCG2026), utilizing React/Vite, .NET Core APIs, OpenConf, and Amazon Payfort integration.
Received a Certificate of Appreciation from the UBT President in recognition of exceptional contribution to UBT's digital transformation applications.
Developed and maintained IT systems for 5,000+ students and staff using .NET Core and MySQL.
Upgraded legacy modules to .NET Core 8, improving performance and maintainability.
Implemented Clean Architecture and Repository Pattern across multiple projects.

Senior Software Engineer

July, 2018 — October, 2023 @ Argaam - Danat

Led a team to develop Argaam Tools for C-level executives & investors.
Implemented new Argaam Subscriptions and spearheaded Argaam Data APIs (120+ endpoints).
Redesigned and developed IPOs and Mergers & Acquisitions Reporting Services.

Software Engineer

December, 2016 — July, 2018 @ Argaam - Danat

Maintained Argaam.com and related business applications for financial market data.
Developed and maintained data feeder services and subsidiary websites.

.NET Developer

February, 2016 — November, 2016 @ ComSouls Technologies

Developed ASP.NET MVC powered websites and APIs for various projects.
Key projects: Tutor Finder, Pakimandi, MartX, ComplaintMS.

Achievements

UBT President's Certificate of Appreciation: Honored for contributions to the University's digital transformation applications.
Employee of the Year 2021: Awarded during remote service for outstanding contributions to Argaam - Danat.
AI Product Launch: Successfully built and launched **sajjad.ai**, an end-to-end multi-lingual AI platform.
Commercial Project Success: Sold personal commercial web projects and scripts 650+ times on Envato CodeCanyon.
APCG2026 Infrastructure: Designed and implemented the complete digital application and payments platform for the 19th Asia Pacific Conference on Giftedness.
Payment Gateways: Successfully integrated HyperPay, AlRajhi BPG, Authorize.Net, KuPay, and AmBank payment gateways.
Repository Migration: Planned and led the migration of all Argaam code repositories from SVN to Git.

Education & Certifications

BSc. Software Engineering

September, 2012 — June, 2016 @ Bahria University

Studying at Bahria University has been the most life-changing experience and has shaped me to be who I am today.

Professional Certifications

ChatGPT Prompt Engineering DeepLearning.io • 2024

CompTIA A+ Certification PNS Johar • 2012

Testimonials

"Sajjad is an exceptional engineer. He spearheaded the design of the Argaam Tools platform, delivering high-performance .NET Web APIs that transformed how our investors consume financial market data. His work ethic is top-notch."

Former Engineering Manager Argaam - Danat

"Under Sajjad's technical leadership, the digital infrastructure for the APCG2026 conference was developed seamlessly. His integration of payment systems and full-stack architecture exceeded our expectations."

Project Coordinator University of Business and Technology