Okatov Roman
@okatovroman
Senior .NET backend developer specializing in API development, distributed systems, and performance optimization (Node.js/TypeScript, AWS).
IsraelWhat I'm looking for
I’m a backend-focused developer with 5+ years of commercial experience building and maintaining APIs, integrations, and internal systems using the .NET and Node.js ecosystems. I work on backend services, performance optimization, data processing, and client-facing functionality in large-scale web platforms and intelligence systems.
In recent roles, I redesigned a CSV export system into one of the most requested client-facing features and improved API response times by up to 4x (400%) through backend optimization and query refactoring. I’ve also implemented and maintained APIs and integrations using AWS infrastructure and S3/SFTP-based data pipelines.
I enjoy cross-team collaboration and system design discussions under demanding timelines, and I’ve helped drive modernization toward a React frontend with .NET backend architecture. I’m especially interested in backend engineering, API design, distributed systems, and performance optimization, with open to global remote / B2B opportunities.
Experience
Work history, roles, and key accomplishments
Architecture & Ownership: Spearheaded the end-to-end development of new web applications, taking full ownership of architectural design and technology stack selection (transitioning from legacy systems to modern .NET 6+ and React).
Performance Optimization: Engineered and optimized high-load API services, achieving a 4x (400%) reduction in response times through database indexing and code refa
Spearheaded end-to-end development of new web applications, owning architecture and the move from legacy systems to modern .NET and React. Optimized high-load API services, improving response times by up to 4x through database indexing and code refactoring, and managed AWS-backed deployment and data pipelines.
Developed and maintained backend components in the .NET ecosystem, working with C# and related web technologies within Itransition Group projects.
Worked as a junior .NET developer at Itransition Group, contributing to web/backend development using C#/.NET and related tools.
Administered systems and networks at LLC Rann Building, including Windows Server environments and common network services.
Handled security responsibilities at Alef Moked, working with Windows Server and identity/network administration technologies.
Served as a Network System Administrator at LLC Rann Building, supporting network operations and related infrastructure.
Education
Degrees, certifications, and relevant coursework
IT Academy
Java SE
2020 - 2020
IT Academy
C#/.NET
2020 - 2020
IBA Group Minsk
Programming in C#
2016 - 2016
Belarusian State University
Master's degree, Physics and Mathematics
2013 - 2014
Belarusian State University
Bachelor's degree, Radiophysics
2008 - 2013
Tech stack
Software and tools used professionally
Availability
Location
Israel
BelarusPortfolio
github.com/KyuuzoTSalary expectations
Social media
Skills
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