Sergey is available for hire

Sergey Kuleshov

Verified Expert in Engineering

MERN Stack Developer

Location

Limassol, Cyprus

Toptal Member Since

June 8, 2016

Sergey是一名全栈和云web开发人员，拥有科学领域的硕士学位和十多年的行业经验. 凭借对web技术的深入了解，他专注于Node.特别是MERN堆栈和DevOps，他在AWS云方面有深入的经验. Sergey在iOS开发方面有着丰富的实践经验.

Web Development Full-stack CSS JavaScript iOS Cocoa UIKit Node.js React RxJS Kotlin User Experience (UX)MERN Stack Ruby Ruby on Rails (RoR)MetaTrader 4 IPTV

Portfolio

Klartech

JavaScript, TypeScript, Node.js, Amazon Web Services (AWS), Web Development...

BDswiss

ReactiveX, React Native, GraphQL, React, Node.js, Android, iOS, Swift, Cloud...

SclaeFactor

Ember.js, Ruby on Rails (RoR), Ruby, Web Development

Experience

iOS - 5 years TypeScript - 5 years Node.js - 3 years MERN Stack - 3 years React - 3 years Swift 5 - 2 years

Availability

Part-time

Preferred Environment

Git, Xcode, Visual Studio Code (VS Code)， Linux, MacOS

The most amazing...

...project I've worked on was a scalable, 基于微服务架构的高负载外汇交易API层.

Work Experience

Cloud Architect

2022 - PRESENT

Klartech

开发基于GitHub工作流的CD管道，并部署到AWS ECS集群.
为基于kafka的微服务的端到端测试设计CI测试套件.
开发了一个NestJS模块，用于根据Glue JSON模式验证Kafka消息.

Technologies: JavaScript, TypeScript, Node.. js、AWS、Web开发、Docker、DevOps、GraphQL、PostgreSQL、AWS Lambda

Team Lead and CIO

2016 - 2022

BDswiss

为MT4 (MetaTrader 4)平台设计并实现基于Node的高性能api.js and C++ stack with a RabbitMQ message backbone.
将微服务迁移到基于基础设施作为代码最佳实践的AWS云开发工具包.
领导iOS和Android原生移动交易应用的开发.
开发一个React和Redux后台和客户端门户应用程序.

技术:ReactiveX, React Native, GraphQL, React, Node.js, Android, iOS, Swift, Cloud, UIKit, Amazon Web Services (AWS), Full-stack, CSS, Web Development, User Interface (UI), User Experience (UX), Responsive Web Design (RWD), MySQL, Docker, Project Management, DevOps, RxJS, PostgreSQL, AWS Lambda

Senior Sofware Developer

2016 - 2016

SclaeFactor

使用EmberJS前端，用Ruby on Rails创建了一个微服务后端.
与项目经理一起定义软件需求.
使用AWS和Digital Ocean建立混合部署流程.

Technologies: Ember.js, Ruby on Rails (RoR), Ruby, Web Development

Software Developer

2013 - 2016

Liquidnet

Developed an end-to-end testing stack with Cucumber.
在基于perl的固定收益交易后端实现了新功能.
执行固定收益交易交易所的统计计算和报告.
Improved .基于。NET和WinForms的客户端软件，满足个人客户的需求.

Technologies: Cucumber, Ruby, .NET, C#, Perl

CTO

2012 - 2016

Douosvavvm

为iOS、Windows和其他平台设计和构建安全电子邮件通信解决方案.
为iOS开发了一个本地电子邮件客户端，支持所有流行的电子邮件服务的IMAP协议.
针对大型数据集优化的核心数据，以获得最佳用户体验.
为赛门铁克PGP通用服务器实现了兼容层.

技术:Core Data, Cocoa, Objective-C, RubyMotion, iOS, User Experience (UX)

CTO

2011 - 2013

EXA Solutions

实现内部数据管理系统，作为MongoDB支持的一组Rails引擎.
用Objective-C, Core Data和RestKit构建了几个iOS应用程序.
用Ruby on Rails创建了一个多维统计系统，并在本地商店支持下创建了一个Chrome应用程序.
开发了许多与PayPal和其他支付网关集成的电子商务解决方案.

Technologies: Objective-C, MongoDB, Ruby on Rails (RoR), Ruby, PHP, Web Development, MySQL, Stripe API

Research Analyst

2008 - 2011

PrimeTel

参与欧盟SmoothIT研究项目中基于经济激励的P2P流量优化算法的设计和现场试验.
设计并实现了一个互联网协议电视(IPTV)电子商务应用程序.
改编并完成欧盟研究项目t - senity下老年人IPTV应用的质量保证.
实现视频点播(VOD)和直播(Livestream)录制，供客户在IPTV平台上使用.
参加了多个研究项目，提交了一些提案.

技术:网络、P2P、IPTV、JavaScript、Ruby on Rails (RoR)、Ruby、MySQL

Software Developer

2005 - 2007

PrimeTel

根据销售互联网服务提供商(ISP)服务的业务需求，调整SugarCRM.
为本地呼叫中心开发了一个电话号码目录.
Implemented onboard registration for new customers.

Technologies: .NET, PHP

Experience

iOS Forex Trading App

http://bdswiss.com

As the team lead and lead iOS developer, 我在开发交易应用程序的过程中发挥了最积极的作用, including architecture, high-load server-side APIs, and many UI/UX decisions.

DokuCMS

http://github.com/svyatogor/DokuCMS

Open-source CMS and e-shop based on the MERN stack. 作为一名自由开发者，我面临着定期开发小型低预算网站的特殊要求. I needed a tool that would allow me to do it quickly and efficiently; hence, 我决定实现一个定制的解决方案，再也没有回头看任何其他商业CMS.

Krypto Mail

http://kryptomailapp.com

Krypto Mail是一个全功能的原生iOS电子邮件应用程序，集成了相当好的隐私(PGP)安全, compatible with Symantec PGP, including encryption and digital signatures. Support for all IMAP/SMTP email servers. Integrated with PGP Universal Server.

EventSlice

一站式满足所有活动需求——查找并预订活动地点, find professionals, get quotes, and hire the best ones. Manage your budget and much more.

NDA Project

一个加密投资平台，客户可以购买ERC20代币并将其投入各种投资计划. 作为链下预言机支持的智能合约实现的押注和利润逻辑.

Skills

Languages

ECMAScript (ES6), CSS, JavaScript, Swift 5, Kotlin, GraphQL, Ruby, Objective-C, SQL, TypeScript, TypeScript 2, TypeScript 3, PHP, Swift, Perl, C#, Solidity

Frameworks

Cocoa, Rx, UIKit, React Native, Core Data, Ruby on Rails (RoR)， RubyMotion, Redux, Ember.js, .NET, NestJS, Next.js, Tailwind CSS

Libraries/APIs

Node.js, React, RxJS, RxJava 2, RxSwift, Socket.IO, Stripe API, ReactiveX, Stripe

Tools

Git, RabbitMQ, Xcode, Cucumber

Platforms

Heroku, iOS, Linux, Android, MetaTrader 4, Amazon Web Services (AWS), Docker, AWS Lambda, MacOS, Visual Studio Code (VS Code), Blockchain

Other

Full-stack, Web Development, MERN Stack, User Experience (UX), IPTV, P2P, Networking, Encryption, OpenPGP, Cloud, User Interface (UI), Team Leadership

Paradigms

测试驱动开发(TDD)，响应式网页设计(RWD)， DevOps

Storage

Redis, PostgreSQL, MySQL, Amazon S3 (AWS S3), MongoDB

Industry Expertise

Project Management

Education

2007 - 2008

M.Sc. Degree in Computer Science

Royal Holloway, University of London - Surrey, UK

2002 - 2006

B.Sc. Degree in Mathematics, Computing, and Statistics

University of London - London, Distance Learning

2002 - 2005

B.Sc. Degree in Computer Science

Cyprus College - Nicosia, Cyprus

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