Bilal Tonga

- Led the full lifecycle development of the critical settlement service for the German energy market, ensuring strict compliance with data standards. - Designed data storage strategies using TimescaleDB and PostgreSQL to handle high-frequency metering data, effectively eliminating bottlenecks in reporting queries. - Led technical design decisions for data modeling, API contracts, and service boundaries, collaborating with product, frontend, and data teams to ensure scalability.

- Architected and delivered real-time IoT drone tracking system using Node.js, MQTT, and MySQL, processing location updates from 100+ drones every second with sub-200ms latency for live map visualization. - Implemented MQTT broker architecture with QoS level 1 guarantees and message persistence, ensuring zero location data loss during network interruptions across distributed drone fleet. - Architected and delivered real-time IoT drone tracking system using Node.js, MQTT, and MySQL.

- Led the strategic migration from a monolithic legacy system to a microservices architecture on AWS, allowing the system to scale during high-volume transaction periods. - Designed a fault-tolerant payment processing system using Python and Apache Kafka, processing 20,000+ daily cryptocurrency purchases with zero transaction data loss through message handling. - Built and documented core RESTful APIs used by mobile and frontend teams, enforcing strict versioning and authentication standards.

- Developed and maintained back-end systems utilizing Python, Django, and Docker. - Collaborated closely with UI/UX designers to develop a user-centric Flutter app. - Engaged regularly with the CTO to comprehend project requirements. - Collaborated closely with marketing teams to understand their needs.

- Developed Surveillance Solutions with Python and Flask on Embedded Linux devices. - Managed PostgreSQL and SQLite databases, focusing on performance and scalability. - Created and integrated RESTful APIs, facilitating data exchange and system integration. - Developed Bash scripts for system automation and deployment on Linux environments.