Hamza Raja

Senior Software Engineer with 9+ years building production APIs, real-time platforms, and mobile-supporting systems. Experienced with high-concurrency services processing 1M+ daily transactions, sub-120ms API latency, 99.95% availability, automated releases, and secure mobile diagnostics platforms.

Senior Software Engineer at Self Employed (2025-01 – Present)

• Architected C# and.NET Core microservices using ASP.NET Core Web APIs, Entity Framework, and Dapper, improving service scalability and maintainability for enterprise applications.
• Built responsive enterprise interfaces with Angular, TypeScript, HTML5, and CSS, integrating them with RESTful.NET Web APIs and backend microservices.
• Developed Node.js and Python services supporting AI-powered workflows, integrating LLMs, RAG pipelines, vector databases, and MCP servers into production applications.
• Implemented PostgreSQL, SQL Server, and MongoDB data layers with optimized queries, indexing, Entity Framework, and Dapper-based data access for high-volume workloads.
• Designed multi-tenant microservice architectures and asynchronous messaging workflows using AWS SQS, RabbitMQ, and Kafka, improving isolation, scalability, and system resilience.

Senior Software Engineer at Iver Soft (2024-12 – 2025-10)

• Delivered enterprise applications with.NET Framework, C#, ASP.NET Web API, Entity Framework, and Dapper, modernizing legacy services into scalable.NET Core microservices.
• Developed Angular and React applications using TypeScript, JavaScript, HTML5, and CSS, integrating frontend workflows with secure RESTful Web APIs.
• Engineered backend services with Node.js and Python, connecting relational and NoSQL data stores including PostgreSQL, SQL Server, and MongoDB.
• Integrated LLMs, RAG, agentic frameworks, vector databases, and MCP servers into application workflows to automate knowledge retrieval and business processes.
• Established CI/CD pipelines, Docker-based deployments, automated testing, and AWS/Azure infrastructure, supporting reliable releases across multi-tenant production environments.

Software Engineer at Iver Soft (2020-05 – 2024-11)

• Developed C#/.NET Framework applications and Web APIs using Entity Framework and Dapper, delivering scalable business functionality for enterprise customers.
• Built Angular and React user interfaces with TypeScript, JavaScript, HTML5, and CSS, improving usability and integration with backend services.
• Designed microservices and Node.js APIs backed by PostgreSQL, SQL Server, and MongoDB, improving application scalability and data accessibility.
• Implemented asynchronous processing with RabbitMQ, Kafka, and AWS SQS, enabling reliable communication between distributed services and background workloads.
• Automated CI/CD, Docker containerization, integration testing, and deployment workflows across AWS and Azure, improving production release consistency.

Software Engineer at SoftServe (2017-04 – 2020-05)

• Re-architected backend services to increase data-processing efficiency by 30% while improving reliability of production application workflows.
• Introduced RESTful APIs enabling secure data exchange for more than 120 clients and contributing to a 35% reduction in security incidents.
• Automated regression testing and deployment pipelines supporting stable weekly production releases across backend applications.
• Improved application performance through database indexing, query optimization, and targeted analysis of production workloads.
• Partnered across engineering and product teams to translate complex application requirements into scalable backend services and reliable integrations.

Bachelor's Degree in Computer Science – University of Hertfordshire (2012-01 – 2016-12)