Senior Software Developer & Technical Lead

Khaldoon Saqallah

15+ years building enterprise systems, leading teams, and shipping modern web applications. Based in England, United Kingdom.

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Profile

Who I Am

Ambitious and results-driven software professional with a Bachelor's in Software Engineering from AL-Zaytoonah University and over 15 years of experience across Jordan and the United Kingdom.

I specialise in full-stack development — from crafting responsive React/Next.js frontends to architecting robust .NET backends and cloud-native systems. I've led teams, designed scalable architectures, and delivered enterprise solutions in banking, gaming, and enterprise software domains.

A creative problem-solver with deep knowledge of SDLC, design patterns, Agile methodologies, and cutting-edge technologies including AI/LLM integration and containerisation with Docker & Kubernetes.

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Location
England, Great Britain 🇬🇧
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Email
Khvip87@yahoo.com
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Phone
+44 7456 747453
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Education
BSc Software Engineering — AL-Zaytoonah University (2005–2009)
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Citizenship
Jordanian / British (Dual)
Work History

Career Journey

Senior DeveloperNov 2018 — Present
Derivco — England, United Kingdom
ReactNext.jsTypeScriptASP.NET MVC 5SASSAzure DevOpsGitBitbucketJIRA
  • Developing modern frontend applications using React and Next.js with TypeScript
  • Estimating and delivering Agile user stories end-to-end
  • Collaborating with UX/UI designers to implement pixel-perfect layouts
  • Integrating RESTful APIs and third-party services
Development SpecialistDec 2012 — Nov 2018
Arab Bank PLC
ASP.NETSQL ServerEntity FrameworkjQueryWeb ServicesTFSUltimus
  • Designed and implemented enterprise workflow web applications for banking operations
  • Gathered requirements and produced SRS, SDS, and test case documentation
  • Troubleshot systems and resolved malfunctions and operational issues
  • Delivered thoroughly tested, production-grade software components
Technical Lead — .NET DeveloperFeb 2012 — Oct 2012
Intersoft
ASP.NETWCFSQL ServerEntity FrameworkWindows Services
  • Led a team of developers; managed collaboration, reviews, and deliverables
  • Designed and implemented CRM, Payroll, and Time Attendance systems
  • Owned full SDLC: system design, coding, testing, and bug resolution
Senior .NET DeveloperFeb 2011 — Feb 2012
Intersoft
ASP.NETWCFjQuerySQL
  • Implemented survey authoring tool as part of best practice assessment system
  • Built Data Access, Business, and Interface layers end-to-end
  • Conducted thorough code reviews and resolved critical bugs
.NET DeveloperDec 2009 — Jan 2011
Integrated Technology Group (ITG)
ASP.NET 2.0Web ServicesWindows ServicesSQL Server
  • Developed quality modules for the EduWave™ educational platform
  • Implemented Outlook and Microsoft Word add-ins
.NET DeveloperAug 2009 — Dec 2009
Iris Software Solution
ASP.NETSQLHTMLCSS
  • Built web application pages for a best practice assessment system
  • Implemented survey authoring tools and resolved defects
Technical Arsenal

Skills & Expertise

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Frontend
React Next.js TypeScript JavaScript Web Hooks SSR Angular HTML/CSS SASS jQuery AJAX ASP.NET
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Backend
Node.js Express.js .NET / .NET Core C# ASP.NET MVC WCF RESTful APIs GraphQL WebSockets ADO.Net VB.NET
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Databases
SQL Server / T-SQL MongoDB Entity Framework ADO.NET LINQ Stored Procedures SSIS
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AI / LLM
OpenAI API LLM Integration AI SDKs Prompt Engineering MCP Protocol
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Cloud & DevOps
Azure Docker Kubernetes Terraform Git Azure DevOps IIS Linux Windows Server
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Architecture
System Architecture Design API Design Database Design Caching Strategies Big Data Solutions Production Environment Setup Scalable Application Design SOLID Principles N-Tier Design Patterns Agile / Scrum TDD UML API Design Caching
Credentials

Certifications

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Microsoft Certified: Azure Fundamentals
Microsoft
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MCPD: Microsoft Certified Professional Developer
Microsoft — 2010
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MCPD: ASP.NET Developer 3.5
Microsoft — 2010
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MCTS: .NET Framework 3.5, ASP.NET Application
Microsoft — 2010
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Docker Fundamentals
Udemy
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Unity 3D Development
Udemy
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Programming Microsoft .NET Application
Official Microsoft Learning Product
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Communication Skills
BDC — Insights Thinking, UK
Let's Connect

Get in Touch

Open to Software Developer and Tech Lead opportunities. Available for on-site, hybrid, or remote roles.

✉ Khvip87@yahoo.com 📞 +44 7456 747453 📍 England, UK
Send a Message →