03/13/2026 updated

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100 % available

Senior Full Stack Developer

Zaporizhia, Ukraine
Only remote
Bachelor's Degree in Computer Software Engineering
Zaporizhia, Ukraine
Only remote
Bachelor's Degree in Computer Software Engineering

Profile attachments

Oleksandr_Nazarenzko.pdf

About me

Senior Full Stack Engineer with 14+ years building scalable web platformsforstartups and enterprise organizations. Specializesin JavaScript, TypeScript, React, Vue, Next.js, Node.js, .NET, and Python, with a focus on high performance frontend systems and scalable backend APIs.

JavaScript.NET FrameworkApplication Programming Interfaces (APIs)Amazon Web ServicesArchitectureHTML5AutomationUnit TestingC Sharp (Programming Language)Cascading Style Sheets (CSS)Cloud ComputingCloud EngineeringCode ReviewDatabasesContinuous IntegrationLinuxDevOpsProgramming ToolsDistributed SystemsGitHubPython (Programming Language)PostgreSQLMongoDBMySQLNode.jsPerformance TuningQuery OptimizationRedisNext.jsSoftware EngineeringSQL DatabasesSystems ArchitectureSystems DesignTypeScriptWeb PlatformsReact.jsExpress.jsBackendVue.jsWebpackIntegration TestsKubernetesDeployment AutomationFull Stack DevelopmentGraphQLFront End Software DevelopmentReact ReduxApi DesignRestful ApiDockerProgramming LanguagesMicroservices
Full Stack Development
Expertise in building scalable web platforms using JavaScript, TypeScript, React, Vue, Next.js, Node.js, .NET, and Python with focus on high performance frontend systems and scalable backend APIs

Cloud Architecture & DevOps
Proficiency in delivering cloud native applications on AWS, deploying containerized services with Docker and Kubernetes, and automating release pipelines using CI/CD workflows

Database & Performance Optimization
Advanced skills in PostgreSQL, MySQL, MongoDB, Redis with expertise in query optimization, indexing strategies, and performance tuning to reduce API response times

Frontend Technologies
React, Vue.js, Next.js, HTML5, CSS3, Redux, React Hooks, Webpack for building modern user interfaces

Backend Development
Node.js, .NET, REST APIs, GraphQL, Express.js, Microservices architecture for scalable server-side solutions

Programming Languages
JavaScript, TypeScript, Python, C#, SQL for versatile software development

System Architecture
System Design, Distributed Systems, Cloud-Native Architecture, Performance Optimization, API Design

Development Tools
GitHub Actions, Linux, unit testing, integration testing, code reviews, deployment automation

Languages

EnglishFluent

Project history

Senior Full Stack Developer

Prozori Solutions
Led development of multiple React and Next.js applications used by over 50,000 monthly users, introducing reusable component libraries and modern frontend architecture. Architected REST and GraphQL services with Node.js and .NET supporting high traffic microservices handling 10k+ daily API requests.

Full Stack Developer

FiveCube
Delivered enterprise React and Vue.js single page applications supporting 20,000+ active users. Built Node.js and Express backend services capable of handling thousands of concurrent sessions, ensuring 99.9% uptime for critical enterprise systems.

Senior Backend Developer

Owlab Group
Architected scalable RESTful APIs using Node.js and Python that supported multiple production web platforms and mobile clients. Established microservice-based backend infrastructure, improving service reliability and enabling independent deployments across engineering teams.

Backend Developer

Owlab Group
Created backend services using Node.js and Python powering enterprise web applications used by thousands of users. Structured scalable database schemas for PostgreSQL and MySQL, improving data retrieval performance and long-term maintainability.

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