Summary
Overview
Work History
Education
Skills
Websites
References
Timeline
Generic

Sergey Kraivoy

Technical Lead / Senior Full-Stack Developer
Tirat Carmel

Summary

Self-driven problem solver with 13+ years building enterprise .NET systems, real-time monitoring, and national-scale IoT deployments. Hybrid skill set across backend APIs, databases, hardware/sensors, and networking, with a track record of learning new tech fast and delivering reliably in production (zero-downtime cutovers, high-ingest data pipelines, secure remote management).

Overview

14
14
years of professional experience
4
4
Languages

Work History

Technical Lead / Senior Full-Stack Developer

Sky I.M.U
01.2014 - 08.2025
  • De-facto team lead (4 ppl: 2 hardware techs, 1 SQL engineer, 1 assembly tech). Owned architecture, national deployments, vendor coordination, documentation, and code reviews; consulted on hiring.
  • Built and optimized enterprise-scale automation and monitoring systems; reduced manual workloads and secured marquee clients (e.g., McDonald's Israel, Shufersal, national toll-road operators).
  • Led multi-site IoT, OCR, and traffic projects with zero-downtime cutovers and secure remote management.
  • Deployed and operated services on Windows Server/IIS and Oracle Cloud (Ubuntu + Nginx + Kestrel).
  • Authored in-depth manuals and trained engineering/ops teams (networking + code); acted as go-to technical contact.

Software Developer

Indra (Subcontractor via Sheinerkor)
01.2012 - 01.2014
  • Developed analytics/reporting for toll-road monitoring; managed server infrastructure & databases.
  • Early work on OCR systems and WPF tooling for rapid triage of low-confidence transactions.

Education

Specialized Training - Advanced vehicle-occupancy & tolling systems (LiDAR, optics, Docker, Ubuntu)

Engineering Studies (Software track)

Technion
01.2014

Diploma - Visual Communication (Web & Animation)

Tiltan College of Design
04.2001 -

Skills

  • Backend & APIs: C# (NET Framework 30-48; NET 31-9), ASPNET Core (REST), SignalR (WebSockets), DI, Python (edge), Bash/PowerShell/CMD; Auth: JWT, Identity (roles/users), OTP SMS; Kestrel; Windows Server/IIS; Ubuntu/Nginx; Oracle Cloud

  • Databases: SQL Server, MySQL, PostgreSQL; EF/LINQ, stored procedures, query tuning (CTEs, execution plans); SQL Jobs (ETL/dedup/state updates); Always On (HA); replication; high-ingest pipelines (~14M rows/day), split OLTP vs historical stores

  • Frontend: React Vite, MUI, MobX/Context, jQuery/AJAX, HTML/CSS

  • Hardware & IoT: Raspberry Pi (3 family), AutoSSH; DS18B20 (1-Wire), ADS1115 (I2C), Modbus (Pilot); Ouster LiDAR; ARH/HTS ANPR cameras custom cams; Wiliot BLE tags (vendor REST API/JSON); Digi/Modbus gateways

References

Private GitHub repositories and references available upon request. Client names listed publicly with permission (e.g., McDonald's Israel, Shufersal, Carmel Tunnels/Indra).

Timeline

Technical Lead / Senior Full-Stack Developer

Sky I.M.U
01.2014 - 08.2025

Software Developer

Indra (Subcontractor via Sheinerkor)
01.2012 - 01.2014

Diploma - Visual Communication (Web & Animation)

Tiltan College of Design
04.2001 -

Specialized Training - Advanced vehicle-occupancy & tolling systems (LiDAR, optics, Docker, Ubuntu)

Engineering Studies (Software track)

Technion

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Sergey KraivoyTechnical Lead / Senior Full-Stack Developer