Mostafa Wahib

Available to hire

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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Language

Javanese
Advanced

Work Experience

Software Developer at IBM
January 1, 2025 - Present
Designed and developed scalable backend services and APIs using Node.js and PostgreSQL to support systems engineering modeling workflows. Optimized GraphQL and REST API performance, reducing average response times by 30%+ through resolver optimization, caching, and SQL query tuning. Instrumented distributed services with OpenTelemetry for end-to-end tracing and faster bottleneck identification. Built an asynchronous job processing system for artifact generation, decoupling heavy workloads from request paths and improving throughput and system responsiveness under load. Resolved cross-service consistency issues in a distributed, multi-pod environment, improving reliability under concurrent access. Re-architected license checkout service to ensure correctness under concurrency and eliminated defects across distributed instances. Implemented reusable project templating to streamline backend-driven project initialization and reduce setup time for repeat workflows.
Software Developer at Hamilton Health Sciences
February 1, 2023 - January 1, 2025
Enabled integration of data and services across various applications by developing REST APIs that process financial data for one of Canada’s largest networks of hospitals, eliminating 100+ hours of manual work per week. Led redesign and enhancement of a financial forecasting application utilizing TypeScript/JavaScript, Node.js, Express.js, React.js, and SQL Server, which resulted in fewer bug reports and increased developer velocity. Addressed several database and application performance bottlenecks in existing backend APIs and SQL queries, reducing average API response latency by 34%. Designed and implemented a payroll transfer tool that streamlines the process of accurately transferring employee payroll data between internal systems, resulting in quicker processing time and an increase in data integrity. Implemented Jenkins as a CI/CD platform to automate backend deployment pipelines, leading to a 40% decrease in deployment time and enhanced developer productivity. Employed compreh

Education

Honours Bachelor of Science in Computer Science at University of Toronto
January 11, 2030 - April 29, 2026

Qualifications

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Industry Experience

Software & Internet, Healthcare, Education, Professional Services