Sajjad Arif GulSajjad Arif Gul
Available — Jeddah, Saudi Arabia

Senior .NET Software Engineer building AI-powered products.

10+ years of experience designing and developing scalable systems with NET, C#, React, Azure and modern technologies.

I help organizations build scalable .NET platforms and integrate modern AI capabilities into production systems.

.NET 8ASP.NET CoreOracleSQL ServerPostgreSQLReactTypeScriptOpenAIRAGLLM Integration
Download CVContact MeView My Projects
Sajjad Arif Gul
10+
Years building software
100+
Production Releases
700+
Client Websites
5,000+
Users Served

About

10+ years turning hard requirements into reliable, production-grade software.

"Reliable software first. AI where it adds real value."

— Engineering Philosophy

I focus on practical engineering over technology trends, using AI where it creates measurable value while keeping systems simple, reliable and maintainable.

Enterprise Engineering

I'm a Senior .NET Software Engineer with more than 10 years of experience designing and building scalable enterprise applications. My work spans backend engineering, distributed systems, cloud-native applications and integrating AI capabilities into enterprise software and production systems.

AI Products & My Current Focus

Over the past few years, my focus has naturally expanded from enterprise software engineering to building AI-powered applications, combining more than a decade of .NET experience with production AI systems. One of my recent projects, sajjad.ai, is a multilingual AI platform I built from the ground up using models and platforms such as OpenAI, DeepSeek and Ollama, with an ASP.NET Core backend and a React + TypeScript frontend and features like document RAG, real-time chat, semantic search and code generation tools, demonstrating how modern AI capabilities can be integrated into reliable enterprise software.

Availability

Jeddah, Saudi Arabia

  • ✓ Onsite
  • ✓ Remote (depending on role)

Notice Period

30-60 days

Languages

  • English
  • Urdu
  • Pashto
  • Arabic(Conversational)

Experience

Oct 2023 — Present

University of Business and Technology (UBT)

Full-time
On-site
Jeddah, Saudi Arabia

Senior Software Engineer (Enterprise Applications & AI)

Key Responsibilities

  • Design, develop, and maintain enterprise applications supporting more than 5,000 students, faculty, and administrative staff.
  • Lead code reviews, onboard new engineers, and mentor junior developers to improve code quality and engineering practices.

Achievements

  • Independently architected APCG 2026's full digital platform — conference website (React/TypeScript), OpenConf paper submission, registration, PayFort payments, and digital ID generation — supporting 1,000+ attendees from 40+ countries at the 19th Asia Pacific Conference on Giftedness.
  • Designed and delivered UBT's digital certificate issuance platform, automating certificate generation, approval workflows, and digital signing while replacing a manual process. Leveraged AI-assisted development tools (Cursor and Claude Code) to accelerate delivery.
  • Developed 30+ secure ASP.NET Core REST APIs powering the MyUBT mobile application for academic services.
  • Modernized 8 legacy applications by migrating critical modules to ASP.NET Core, improving performance, maintainability, and long-term support.
  • Migrated 60+ repositories from TFS and local servers to GitHub, modernizing source control and improving team collaboration.
  • Awarded a Certificate of Appreciation from the UBT President for exceptional contributions to UBT's digital transformation.

Technologies

.NETC#ASP.NET CoreOracleSQL ServerReactTypeScriptTailwindViteVisual StudioVS Code/Claude Code/CursorGit/GitHubAsanaPostman
Mar 2023 — Jul 2025

Inventor Tech

Part-time (Concurrent with full-time role at UBT)
Remote
Jeddah, Saudi Arabia

Senior Software Engineer

Achievements

  • Led the modernization of the company's flagship Visual Basic WinForms ERP, re-architecting and rebuilding it as a modern ASP.NET Core web application with browser-based access and improved long-term maintainability.
  • Implemented new ERP modules for a web-based ASP.NET Core platform supporting more than 1,200 paying customer organizations.
  • Built a customer support and ticketing platform featuring workflow automation, role-based access control (RBAC), and reporting dashboards.
  • Introduced modern .NET engineering practices — including Clean Architecture, Repository Pattern, and Dependency Injection — to improve maintainability, consistency, and long-term extensibility across the ERP platform.

Technologies

ASP.NET CoreC#RESTful APISQL ServerWorkflow AutomationERP Systems
Jul 2018 — Oct 2023

Argaam

Full-time
Remote (Previously On-site)
Riyadh, Saudi Arabia

Senior Software Engineer | Web Team Lead

Key Responsibilities

  • Built scalable backend services and REST APIs powering Argaam's financial platform and products.
  • Led a team of five software engineers through mentoring, code reviews, architecture discussions, and technical planning to improve engineering quality.
  • Collaborated with product managers and business stakeholders to translate complex financial workflows into reliable software solutions.

Achievements

  • Architected and led development of Argaam's Data API platform comprising more than 120 REST endpoints, powering internal systems, partner integrations, and customer-facing financial applications serving thousands of investors across Saudi Arabia and the GCC.
  • Led development of Argaam Charts, transforming large-scale financial and economic datasets into interactive visualizations for investors and analysts.
  • Redesigned the IPO and Mergers & Acquisitions (M&A) reporting systems, improving maintainability and expanding financial market coverage.
  • Led major enhancements to Argaam Subscriptions, improving the subscription checkout experience and reducing support tickets.
  • Developed Argaam Polls, enabling investor engagement through real-time polling and voting features.
  • Led the migration from TortoiseSVN to GitHub, modernizing source control workflows and enabling CI/CD.

Technologies

.NET CoreASP .NET MVCC#SQL ServerRESTful APIsMicroservicesPostmanGit/GithubYouTrackJenkinsFintech Systems
Dec 2016 — Jul 2018

Danat FZ LLC (Argaam Contractor)

Full-time
On-site
Karachi, Pakistan

Software Engineer

Achievements

  • Developed and maintained business-critical financial market applications for Argaam while employed by Danat, Argaam's outsourced software development partner. Transitioned to Argaam as a direct employee in July 2018.
  • Played a key role in developing Argaam Tools, a suite of analytical dashboards, financial calculators, and data aggregation services used by executives, analysts, and investors.
  • Implemented Lableb Search into Argaam, enhancing the search experience for Arabic and English users across the website.
  • Integrated multiple payment gateways — HyperPay, Al Rajhi Bank BPG, Authorize.Net, and KUPay — to support secure online subscription payments.
  • Optimized backend data procedures to improve data accuracy and speed for high-traffic financial services.
  • Promoted to Senior Software Engineer, Argaam (Jul 2018)

Technologies

ASP.NET MVCC#SQL ServerWeb APIsData ProcessingPayment Gateway IntegrationJavaScript/jQueryBootstrap CSS
Feb 2016 — Nov 2016

ComSouls Technologies

Full-time
On-site
Karachi, Pakistan

.NET Web Developer

Achievements

  • Developed ASP.NET MVC web applications and REST APIs for clients across education, retail, and customer service domains.
  • Contributed to the development of client web applications including Tutor Finder, Pakimandi, MartX, and ComplaintMS.

Technologies

ASP.NET MVCC#SQL ServerJavaScriptHTML5/CSS3REST APIs
Dec 2015 — Dec 2018

Website Developers Pakistan

Freelance
On-site
Karachi, Pakistan

Founder - Freelance Web Developer

Achievements

  • Founded and grew a digital company delivering custom web solutions to businesses across Pakistan, initially alongside full-time roles and university studies, later as an ongoing venture.
  • Delivered commercial projects covering e-commerce, custom CMS, educational platforms, and corporate portals.
  • Boosted client search visibility through technical SEO implementation, achieving first-page Google rankings for multiple client sites.

Technologies

Web DevelopmentPHPWordPressWooCommerceTechnical SEOCPanelCloudflareHosting/DomainsSSL

Capabilities

Backend Engineering

Designing scalable enterprise .NET backend systems with a focus on performance, maintainability and long-term evolution.

C#.NETASP.NET CoreASP.NET MVCREST APIsMicroservicesSystem DesignClean ArchitectureDependency InjectionEF CoreDapperAuthenticationAuthorizationJWTSignalRBackground ServicesThird-Party Integrations

Frontend Engineering

Developing TypeScript-based frontends with React and Vite for enterprise and AI-driven applications.

ReactTypeScriptJavaScriptHTML5CSS3Tailwind CSSBootstrapAstroVueVite

Databases

Database design, SQL performance optimization, caching strategies, and data modeling for high-load systems.

SQL ServerOracleMySQLSQLiteRedis

Payment Integration

Integrating secure, robust and compliant payment gateways for local and international transactions.

HyperPayAmazon Payment Services (PayFort)Authorize.NetAl Rajhi BPGKuPay

AI Engineering

Engineering production-ready AI applications with LLMs, RAG and agentic workflows using provider-agnostic architectures.

LLM Integration & DevelopmentOpenAIDeepSeekOllamaRetrieval-Augmented Generation (RAG)Semantic SearchVector DatabasesAI AgentsModel Context Protocol (MCP)Function CallingPrompt Engineering

Engineering Workflow

Collaborative engineering practices including version control, CI/CD, code reviews and automated delivery.

GitGitHubGitHub ActionsJenkinsCI/CDAgileCode ReviewsTechnical Mentoring

Selected Achievements

  • Jul 2025

    AI Product Launch — sajjad.ai

    Designed, built, and launched sajjad.ai, a multilingual AI platform integrating OpenAI, DeepSeek, and Ollama with document RAG, semantic search, AI agents, and real-time chat.

    Launch platform→
    Product
  • Feb 2025

    Certificate of Appreciation — UBT President

    Awarded a Certificate of Appreciation by the President of UBT for outstanding contributions to the university's digital transformation initiatives.

    Read article→
    Recognition
  • Feb 2023

    Financial Data API Platform — Argaam

    Built the foundational API platform that enabled partner integrations and powered multiple investor-facing financial products across Argaam's ecosystem, serving thousands of investors across Saudi Arabia and the GCC.

    Read case study→
    Fintech
  • Feb 2022

    Employee of the Year — Argaam

    Awarded Employee of the Year 2021 for engineering excellence and leadership while working remotely during the COVID-19 period.

    Read article→
    Recognition
  • Ongoing

    700+ Software Product Sales on CodeCanyon

    Designed, developed, and commercially sold web applications and developer tools, achieving more than 700 product sales through Envato CodeCanyon.

    View CodeCanyon shop→
    Product

Education & Professional Development

Sep 2012 — Jun 2016

BSc. Software Engineering

Bahria University, Karachi, Pakistan

Bachelor's degree in Software Engineering from one of Pakistan's leading engineering universities, establishing strong foundations in software architecture, object-oriented programming, database systems and software engineering principles.

Professional Development

  • ChatGPT Prompt Engineering for Developers

    DeepLearning.AI

    2024

Continuous Learning

Currently deepening expertise in:

Large Language ModelsAI Agents & MCPRetrieval-Augmented Generation (RAG)System DesignDistributed SystemsClean Architecture

References

01 / 06

Available for

  • Senior Software Engineer
  • Staff / Lead Engineer
  • AI Engineer
  • Technical Consultant
Let's Talk