Muhammad Haseeb

Full-Stack Developer

Freelance • Freiberufler

Aug 2025 - Present • 1 yr

Working as an independent software engineer, collaborating with a small team of 6 developers to deliver web, mobile, and machine learning solutions. Developing modern web applications using Angular, with backend services in Java (J2EE) and Node.js. Building RESTful APIs with a focus on scalability, security, and clean architecture. Designing and managing databases using MySQL, MongoDB, Firebase, and Supabase. Contributing to mobile application development using React Native, Android (Java/Kotlin), and iOS technologies. Implementing Machine Learning solutions with Python and scikit-learn, including data preprocessing, model training, and algorithms such as KNN, Random Forest, and XGBoost. Using NumPy, Pandas, Matplotlib, Seaborn, and PyPDF for data analysis, visualization, and automation. Following Git-based workflows and ensuring clean, well-documented code with on-time delivery.

Full Stack Developer

ConcaveTech • Vollzeit

Aug 2024 - Dec 2025 • 1 yr 4 mos

Worked as a Full Stack Developer building and maintaining enterprise-level web applications using Java (J2EE) and Angular. Developed RESTful backend services and integrated them with Angular-based frontend applications. Designed, optimized, and managed SQL databases, including complex queries, joins, and performance tuning. Implemented business logic, authentication flows, and role-based access in backend systems. Collaborated with cross-functional teams to gather requirements, fix bugs, and deliver features on time. Followed clean code practices, proper documentation, and Git-based version control for team collaboration. Contributed to improving application performance, stability, and user experience.