Ansar Sansyzbayev

Backend Engineer

BI Group

Develops Django REST services and reporting logic for an enterprise construction-project system, with a focus on API reliability and data correctness.

• Working on the backend of an internal enterprise system for managing construction and renovation projects, with a focus on API reliability, data correctness, and alignment with business rules. • Develop and maintain Django REST services; work with PostgreSQL, stored procedures, SQL functions, and database migrations. • The system covers workflows related to estimates, completed work tracking, contracts, acceptance processes, costs, and payments.

Team Lead Backend; Backend Engineer

City Innovation

Progressed from backend engineering to team leadership on a communication automation platform, covering integrations, AI features, call analytics, and infrastructure for a system serving over 20,000 active conversations.

• As Backend Engineer, developed backend services for a customer communication automation platform. • Worked on WhatsApp integrations, including WAHA, Wazzup, and WhatsApp Business, as well as Telegram and Instagram integrations. • Improved message delivery stability, webhook processing, and communication between external APIs, CRM systems, and internal services. • Integrated CRM systems and external APIs for client-specific workflows, including Bitrix24, amoCRM, Google API, and other custom integrations.

Computer Vision Engineer, part-time

Astana IT University

Developed computer vision models for image detection, including a tree-disease detection model reported at 93% accuracy; co-authored a paper on compressed-image detection.

• Developed and fine-tuned computer vision models for image-based detection tasks. • One project focused on detecting tree diseases from satellite imagery; the final model achieved 93% accuracy. • Also worked on object detection tasks involving vehicles, road signs, forest fires, and other visual classes. • Co-authored a research paper on detection based on compressed images: DOI 10.15587/1729-4061.2024.314148.

Bachelor’s Degree, Cybersecurity

Astana IT University