I am a Software Engineer and Product Engineer with ~4 years of experience building enterprise-grade applications using .NET technologies.

I have worked on multiple production systems, delivering scalable, secure, and high-impact solutions across different business domains. My work spans full stack development, but my focus goes beyond just building features, I aim to solve real business problems and contribute to meaningful product outcomes.

• 🚀 Design and build scalable APIs, microservices, and distributed systems
• ⚡ Deliver performance-optimized solutions aligned with long-term architecture
• 🤖 Integrate AI capabilities using LLM APIs to enable automation and intelligent features
• 🧠 Focus on clean architecture, maintainability, and system reliability
• 🎯 Strong product mindset with emphasis on business impact and user value

I am adaptable, collaborative, and quick to learn, and I thrive in environments where ownership, continuous improvement, and engineering excellence are valued.

💡 Passionate about building reliable, scalable software with real-world impact.

Contour Software (Constellation Software Inc.) 📍 United States | Remote 📅 Aug 2022 – Present

📅 Sept 2023 – Present

• Developed full stack enterprise features using C#, .NET, ASP.NET Core
• Built backend services, APIs, frontend modules, and database layers
• Integrated AI-driven workflows for automation and content generation
• Contributed to system design and technical documentation
• Managed deployments and resolved production issues with root cause analysis

Tech: .NET .NET Core ASP.NET Core Microservices JavaScript React SQL Server Git

📅 Aug 2022 – Sept 2023

• Delivered enterprise features using .NET and ASP.NET Core
• Contributed to architecture documentation and peer reviews
• Maintained scalable backend and frontend systems
• Supported production deployments and critical issue resolution

Tech: .NET .NET Core ASP.NET Core MVC JavaScript jQuery SQL Server Entity Framework

📅 Apr 2025 – May 2025

• Built AI-powered features using React, Node.js, Python
• Integrated OpenAI APIs with real-time systems
• Developed serverless infrastructure using AWS Lambda & CDK
• Optimized system performance and resolved runtime issues

Tech: React Node.js Python OpenAI API AWS Lambda

class AbubakkarKaleem
{
    public string Role = "Software Engineer";

    public string[] Focus = {
        "AI-powered enterprise systems",
        "LLM integrations",
        "Microservices architecture",
        "Cloud-native applications"
    };
}

• LinkedIn: linkedin.com/in/muhammad-abubakkar-kaleem-a6441a184
• Email: abubakarkaleem23@gmail.com
• Portfolio: abubakkarkaleem.vercel.app

⭐ Building scalable systems with intelligent features