yarik

Designed and implemented JWT-based authentication and authorization for 3+ internal applications, securing access for 50+ government stakeholders. Applied AES encryption and secure hashing techniques, protecting 5,000+ sensitive records, achieving 100% compliance with data security standards. Improved backend processing efficiency by 30% through optimisation of data handling and application logic. Deployed 2 production applications, streamlining build and environment configuration processes and reducing deployment time by 15%. Designed and maintained PostgreSQL/MySQL schemas for 10,000+ records, ensuring 99.9% uptime and data integrity.

Taught core computer science concepts (data structures, control flow, debugging, and code quality) to 50+ students weekly, strengthening foundational programming skills. Provided 1:1 technical support to ~10 students per session, improving debugging efficiency and reducing common coding errors. Improved student outcomes by introducing targeted interventions, reducing debugging time by 15% and increasing assignment success rates by 20%. Coordinated with 3 lecturers, ensuring lab content aligned with curriculum objectives, resulting in consistent student feedback scores of 4.5/5.