I am Osama Khalid, a software engineer specializing in backend development using Node.js and Golang. I am currently based in Berlin, Germany, and bring several years of professional experience in building scalable and efficient backend services. I pride myself on clean code, agile methodologies, and delivering innovative solutions that reduce manual workloads and improve system performance. Throughout my career, I've led and collaborated with teams to architect and develop various microservices, APIs, and cloud infrastructure. My expertise spans a wide range of technologies including TypeScript, AWS services, databases like MongoDB and PostgreSQL, and modern frameworks. I am passionate about continuous learning and contributing to impactful projects in backend and cloud development.

Osama Khalid

I am Osama Khalid, a software engineer specializing in backend development using Node.js and Golang. I am currently based in Berlin, Germany, and bring several years of professional experience in building scalable and efficient backend services. I pride myself on clean code, agile methodologies, and delivering innovative solutions that reduce manual workloads and improve system performance. Throughout my career, I've led and collaborated with teams to architect and develop various microservices, APIs, and cloud infrastructure. My expertise spans a wide range of technologies including TypeScript, AWS services, databases like MongoDB and PostgreSQL, and modern frameworks. I am passionate about continuous learning and contributing to impactful projects in backend and cloud development.

Available to hire

I am Osama Khalid, a software engineer specializing in backend development using Node.js and Golang. I am currently based in Berlin, Germany, and bring several years of professional experience in building scalable and efficient backend services. I pride myself on clean code, agile methodologies, and delivering innovative solutions that reduce manual workloads and improve system performance.

Throughout my career, I’ve led and collaborated with teams to architect and develop various microservices, APIs, and cloud infrastructure. My expertise spans a wide range of technologies including TypeScript, AWS services, databases like MongoDB and PostgreSQL, and modern frameworks. I am passionate about continuous learning and contributing to impactful projects in backend and cloud development.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Beginner
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Language

English
Advanced
Urdu
Fluent

Work Experience

Senior Backend Engineer at Ninox Software GmbH
January 1, 2023 - Present
Working in a team of five to develop and release a multi-tenant Document Service from scratch using Node.js, NestJS, TypeScript, AWS, and PostgreSQL. Provisioned the entire service infrastructure with Pulumi and Golang. Developed Sales Automation microservice that automates order processing and reduces manual workload by up to 100%. Introduced Test Driven Development practices and refactored legacy code to improve code quality.
Backend Software Engineer at Folio3, Karachi, Pakistan
December 31, 2022 - August 26, 2025
Developed MSP automation platform with event-based microservices architecture using Node.js, TypeScript, AWS, MongoDB, and Angular. Led Web Robot Core microservice implementation using JWT authentication, reducing manual workload by up to 100%. Scaled cloud infrastructure dynamically using AWS and Kubernetes, improving cost efficiency. Created reusable Angular components and automated end-to-end regression tests to enhance product delivery.
Backend Software Engineer at Folio3, Karachi, Pakistan
December 31, 2022 - August 26, 2025
Worked in an agile Scrum team of eight to develop Opsis Health calorie and nutritional intake tracking platform using .NET Core, C#, SQL Server, and AWS Lambda. Developed low latency REST APIs enhancing app UX by decreasing load by 40%. Built AWS Lambda functions for decoupled thumbnail extraction and improved API pagination leading to 50% lower response times.
Full Stack Software Engineer at Systems Limited, Karachi, Pakistan
August 31, 2021 - August 26, 2025
Contributed to Partner LinQ digital supply chain platform handling 80M+ monthly transactions. Developed over 10 secure and resilient fault-tolerant APIs. Automated onboarding for supply chain networks saving significant development support time. Revamped legacy ASP.NET Web Forms app to multi-tier architecture using ASP.NET Core and Angular, improving performance and security. Migrated legacy database schema to optimized design reducing data redundancy.
Associate Software Engineer at Wavetec, Karachi, Pakistan
June 30, 2019 - August 26, 2025
Collaborated in a team of five developing backend applications using Java, Spring Boot, and MySQL for Smart Vend cashless vending machines. Developed QR code payment gateway feature leading to 60% sales increase.

Education

Bachelor of Science in Software Engineering at University of Karachi, Karachi, Pakistan
January 1, 2015 - December 31, 2018

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Healthcare, Manufacturing, Transportation & Logistics