Bakhatnur Baityeli, Developer in Dubai, United Arab Emirates
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Bakhatnur Baityeli

Verified Expert  in Engineering

Bio

Bakhatnur is a full-stack developer with over 14 years of experience in the eCommerce, crypto exchange, blockchain, healthcare, and food delivery industries. He has expertly developed and scaled various services and web applications from scratch, architecting solutions to serve millions of users. Bakhatnur is highly proficient in multiple technologies, including C#, .NET, Java, Spring Boot, Node.js, React, Next.js, JavaScript, and AWS cloud computing services.

Portfolio

Drapers Guild FZE
React, TypeScript, Next.js, Full-stack Development, Supabase, MetaMask, Vercel...
My Shift Report Inc.
MySQL, JavaScript, PHP, Next.js, Tailwind CSS, Figma, User Experience (UX)...
Talabat
C#, C#.NET, Kubernetes, Spring Boot, Java, Go, Apache Kafka, Kafka Connect...

Experience

  • Java - 15 years
  • MySQL - 10 years
  • Python - 8 years
  • Node.js - 6 years
  • Spring Boot - 6 years
  • C# - 6 years
  • PHP - 6 years
  • .NET - 4 years

Availability

Part-time

Preferred Environment

Java, Node.js, .NET, C#, JavaScript, Amazon Web Services (AWS), Blockchain, Shopify, React, Next.js, NestJS, Supabase

The most amazing...

...thing I've developed is a crypto-savings platform that allows users to earn interest on their crypto asset savings.

Work Experience

Full-stack Developer

2024 - 2024
Drapers Guild FZE
  • Migrated the existing React to Next.js as Next.js uses server-side rendering.
  • Tracked and fixed the existing bugs during rendering and new bugs after the migration.
  • Used Next.js to move the Supabase integration to the middleware. Handled the library update and Material UI upgrade for Next.js.
Technologies: React, TypeScript, Next.js, Full-stack Development, Supabase, MetaMask, Vercel, Blockchain, DevOps, UI Design, API Development, MVP Design, Proof of Concept (POC), Crypto, Bitcoin, Web3.js, Front-end, Amazon Web Services (AWS), Docker, Microservices, Cryptocurrency, Algorithmic Trading, MEAN Stack, Relational Databases, JSON Web Tokens (JWT), Web3

Full-stack Developer (via Toptal)

2023 - 2024
My Shift Report Inc.
  • Developed shift reporting software for healthcare professionals using Next.js, React, Tailwind CSS, PHP, and an Oracle back end.
  • Implemented the back-end service using MEAN (Express.js and Node.js). The reactive, mobile-friendly front end is implemented using Next.js, Tailwind CSS, and React components. Implemented a login service using a JWT token and SSL certificate.
  • Utilized Bitbucket and Git to manage the back- and front-end repositories. Tracked the tasks using Jira.
Technologies: MySQL, JavaScript, PHP, Next.js, Tailwind CSS, Figma, User Experience (UX), User Interface (UI), Front-end Development, Encryption, Databases, Database Design, Back-end Development, Amazon S3 (AWS S3), CSV, CSV File Processing, UI Frameworks, UI Libraries, Design, PostgreSQL, Platforms, Software, Unit Testing, Architecture, Vercel, DevOps, UI Design, API Development, Minimum Viable Product (MVP), MVP Design, Proof of Concept (POC), Front-end, Full-stack Development, .NET, Docker, Microservices, MEAN Stack, Relational Databases, JSON Web Tokens (JWT)

Senior Software Engineer

2021 - 2024
Talabat
  • Led the migration of existing services to the event-driven architecture using Kafka, Java, Node.js, and C#.
  • Developed a vendor listing service that provides a directory of available vendors for specific locations. Vendor availability and delivery areas are visually represented on a map, with geospatial queries executed at runtime to retrieve vendors.
  • Implemented collections, swimlanes, vendor listings, filters, and ranking systems to enhance the vendor listing experience using C#, Java, Go, PostgreSQL, Kubernetes, and Docker.
Technologies: C#, C#.NET, Kubernetes, Spring Boot, Java, Go, Apache Kafka, Kafka Connect, NestJS, Platforms, Software, Unit Testing, Architecture, Terraform, Spring, New Relic, gRPC, Microservices Architecture, JVM, DevOps, API Development, Redis Cache, Minimum Viable Product (MVP), Proof of Concept (POC), CircleCI, Front-end, Full-stack Development, Amazon Web Services (AWS), AWS Lambda, .NET, Docker, Microservices, MEAN Stack, Relational Databases, eCommerce, JSON Web Tokens (JWT), Protobuf, PostGIS

Full-stack Developer

2022 - 2023
1719 Solutions Inc.
  • Created a test suite for the current application to make the existing service easy to upgrade, build, deploy, and monitor.
  • Upgraded the service with the next Shopify API version and migrated the solution from Python 2 to Python 3. Reduced the codebase to make it easy to maintain and add features.
  • Fixed the UI and service bugs and improved the performance.
Technologies: Python, MongoDB, Docker, Shopify API, Shopify, Serverless, Testing, Relational Databases, eCommerce, NoSQL, Next.js, Tailwind CSS, User Experience (UX), User Interface (UI), Front-end Development, Databases, Database Design, Back-end Development, CSV, CSV File Processing, UI Frameworks, UI Libraries, Design, GraphQL, Platforms, Software, Unit Testing, Architecture, DevOps, UI Design, API Development, Minimum Viable Product (MVP), MVP Design, Proof of Concept (POC), Front-end, Full-stack Development, Amazon Web Services (AWS), .NET, Microservices, MEAN Stack, JSON Web Tokens (JWT)

Full-stack Developer

2018 - 2021
Gopax
  • Developed user KYC and AML services using Java, Spring Boot, Node.js, and WebSocket APIs.
  • Built crypto-related financial services and platforms through first-hand experience in the blockchain industry. Created the GOFi platform that gives interest to fixed- and flexible-term products.
  • Implemented the order-matching algorithm of the crypto exchange using Java 8.
  • Implemented the crypto exchanges back-end APIs using Node.js, Express.js, MySQL, and Redis. Provided REST and WebSocket APIs for low latency, high throughput trading platforms.
  • Enhanced the exchange's overall front-end experience with React.
Technologies: Node.js, Python, Java, Spring Boot, MySQL, IntelliJ IDEA, Linux, .NET Core, Redis, JavaScript, Amazon Web Services (AWS), Algorithms, Data Structures, SQL, Amazon Elastic Container Service (ECS), Amazon Elastic Container Registry (ECR), CI/CD Pipelines, Docker, Full-stack Development, React, React Redux, REST APIs, Microservices, Spring Microservice, Caching, Financial Software, Mobile Web, Algorithmic Trading, Cryptoeconomics, Cryptocurrency, ERC-20, GitHub, Git, Jira, Miro, Vue, MongoDB, Amazon DynamoDB, Amazon Simple Queue Service (SQS), Amazon Simple Notification Service (SNS), HTML, CSS, APIs, TypeScript, Express.js, Back-end, PHP, Blockchain & Cryptocurrency, AWS CloudFormation, WebSockets, API Integration, Microsoft SQL Server, Web Development, XML, Object-oriented Programming (OOP), Serializer/Deserializer (SerDes), Full-stack, MEAN Stack, Google Maps API, Firebase, Jest, Serverless, Testing, SMS, Relational Databases, eCommerce, NoSQL, A/B Testing, JSON Web Tokens (JWT), JUnit, Figma, Fintech, Protobuf, Trading, Trading Systems, User Experience (UX), User Interface (UI), Front-end Development, Encryption, TradingView, Databases, Database Design, Back-end Development, Amazon S3 (AWS S3), CSV, Amazon CloudWatch, Ant Design, UI Libraries, Design, PostgreSQL, Kubernetes, Platforms, Software, Unit Testing, Social Security, Architecture, Web3, Terraform, Spring, Microservices Architecture, JVM, DevOps, UI Design, API Development, Redis Cache, Minimum Viable Product (MVP), MVP Design, Proof of Concept (POC), Crypto, Drone CI, Web3.js, Angular, Front-end, .NET

Senior Back-end Developer

2016 - 2018
TMON
  • Developed a photo review service and review moderation portal for the eCommerce platform.
  • Built the Today's Pick deals. Utilized various caching technologies to improve the performance as the Today's Pick deals are shown on the main page and accessed by millions of users.
  • Improved the performance of the service by flattening data and denormalizing by utilizing queue technologies and NoSQL databases.
Technologies: Java, Spring Boot, MySQL, IntelliJ IDEA, Linux, AWS Lambda, Redis, JavaScript, Algorithms, Data Structures, SQL, Python, CI/CD Pipelines, Full-stack Development, AngularJS, REST APIs, Microservices, Spring Microservice, Caching, Financial Software, Mobile Web, GitHub, Git, Bitbucket, Shopify API, Jira, Vue, MongoDB, Couchbase, Apache Kafka, HTML, CSS, APIs, TypeScript, Express.js, Back-end, PHP, Apache, LAMP, API Integration, Web Development, XML, Object-oriented Programming (OOP), Chrome Extensions, Testing, Web Scraping, Relational Databases, eCommerce, NoSQL, A/B Testing, JSON Web Tokens (JWT), MyBatis, JUnit, Databases, Database Design, Back-end Development, CSV, Ant Design, UI Libraries, Design, PostgreSQL, Platforms, Software, Bootstrap, jQuery, Unit Testing, Architecture, Spring, Microservices Architecture, JVM, DevOps, UI Design, API Development, Redis Cache, Proof of Concept (POC), Bitcoin, Angular, Front-end, Ethereum, .NET, MEAN Stack, Protobuf

Android Developer

2008 - 2016
Samsung
  • Developed in-house applications for the Samsung Galaxy S series.
  • Contributed to the Samsung TouchWiz and SDK by implementing reusable APIs and services.
  • Built a Screen Mirroring solution, the first of its kind in the 2010s. It was one of the standout features of the new Galaxy S series.
Technologies: Java, Android, Android SDK, IntelliJ IDEA, Algorithms, Data Structures, Perforce, Kotlin, C, C++, APIs, REST APIs, XML, Object-oriented Programming (OOP), Relational Databases, WebRTC, Front-end Development, Encryption, Database Design, Software, Unit Testing, Architecture, Mobile App Development, JVM, API Development, Proof of Concept (POC), Front-end

Co-founder

2005 - 2008
Massagan.com
  • Developed Massagan.com, one of the most popular social networks website in the Kazakh language.
  • Implemented everything from scratch, from back end to front end using JavaScript, PHP, MySQL, and Apache (LAMP stack).
  • Managed the deployment and user engagement and made strategic decisions on the product.
Technologies: Algorithms, PHP, Linux, MySQL, LAMP, Apache, REST APIs, Web Development, Full-stack Development, Full-stack, Google Maps API, Chrome Extensions, Relational Databases, User Experience (UX), User Interface (UI), Front-end Development, Encryption, Database Design, Software, Architecture, Microservices Architecture, Minimum Viable Product (MVP), Front-end

Experience

GOFi | A Blockchain-based Financial Service

https://www.gopax.co.kr/gofi?tab=my-product
GOFi offers various fixed and open-term savings products that allow customers to earn interest on their crypto asset holdings.

We distributed an interest daily for the open-term products, and for the fixed-term products, the interest would be paid along with the principal amount at the end of the term.

Order Matching Platform

https://www.gopax.co.kr
An in-memory order matching platform for the cryptocurrency exchange and the platform is a highly available, low latency software that matches the bid orders with the asks orders between the various crypto coins and fiat currencies. E.g., BTC-USD, ETH-USD, or BTC-ETH.

Korendy | Invoice and Billing Platform

http://www.korendy.com.tr
A billing and invoice generator plugin using Shopify API for Korendy.com. The application uses Shopify's admin APIs and Turkish invoice generator application and is customized for korendy.com, a leading cosmetic shopping platform.

Shift Reporting System for Healthcare Professionals

A web-based software that provides a full shift reporting dashboard, emailing, and KPI tracking. The software is implemented using React, Next.js, and Tailwind CSS on the front end, as well as Oracle and LAMP stack on the back end.

Crypto Exchange Platform

https://www.gopax.co.kr
Implemented back-end APIs using REST and WebSocket to support high-throughput and low-latency crypto-trading platforms.

I managed complex processes like wallet creation, withdrawals, and transaction handling while synchronizing on-chain balances with database records to maintain accurate financial tracking.

To ensure the robustness of my systems, I incorporated comprehensive testing practices, including unit, integration, and acceptance testing. I also utilized Docker for containerization and implemented CI/CD pipelines using tools like ArgoCI and DroneCI for efficient deployment and scalability.

By adhering to best practices in development, documentation, and deployment, I have designed and implemented scalable, secure, and efficient systems in my personal projects, showcasing my ability to handle challenging software development tasks.

Education

2006 - 2008

Master's Degree in Computer Science

Korea Advanced Institute of Science and Technology (KAIST) - Daejeon, South Korea

Skills

Libraries/APIs

Node.js, React, React Redux, REST APIs, Vue, Protobuf, jQuery, API Development, Web3.js, Shopify API, Google Maps API, WebRTC, MyBatis, X (formerly Twitter) API

Tools

Amazon Elastic Container Service (ECS), Amazon Elastic Container Registry (ECR), IntelliJ IDEA, Git, GitHub, Perforce, Bitbucket, Jira, Miro, AWS CloudFormation, Amazon CloudWatch, Kafka Connect, CircleCI, Amazon Simple Queue Service (SQS), Apache, Figma, Amazon Simple Notification Service (SNS), Kafka Streams, Terraform, MetaMask

Languages

Java, Python, C#, JavaScript, SQL, HTML, CSS, TypeScript, XML, C#.NET, Go, C, C++, PHP, GraphQL, Kotlin

Frameworks

.NET, Spring Boot, Android SDK, .NET Core, AngularJS, Spring Microservice, Express.js, gRPC, Next.js, JSON Web Tokens (JWT), Tailwind CSS, Ant Design, NestJS, Bootstrap, Angular, Jest, Spring, JUnit

Paradigms

Microservices, Object-oriented Programming (OOP), Testing, Database Design, Unit Testing, Microservices Architecture, UI Design, MEAN Stack, DevOps

Platforms

Android, AWS Lambda, Amazon Web Services (AWS), Docker, Linux, Shopify, Kubernetes, Drone CI, Ethereum, Blockchain, Apache Kafka, Firebase, Vercel, JVM, LAMP, New Relic

Storage

PostgreSQL, MySQL, Redis, MongoDB, Couchbase, Microsoft SQL Server, Relational Databases, NoSQL, PostGIS, Databases, Amazon S3 (AWS S3), Redis Cache, Amazon DynamoDB, SQL Server 2016

Industry Expertise

Trading Systems

Other

Algorithms, Data Structures, Full-stack Development, Caching, Financial Software, Mobile Web, ERC-20, Cryptocurrency, Cryptoeconomics, APIs, Back-end, Blockchain & Cryptocurrency, WebSockets, API Integration, Web Development, Serializer/Deserializer (SerDes), Full-stack, Serverless, Web Scraping, eCommerce, A/B Testing, Front-end, Fintech, Trading, User Experience (UX), User Interface (UI), Front-end Development, Encryption, Back-end Development, CSV, CSV File Processing, Supabase, Platforms, Software, Social Security, Architecture, Web3, Minimum Viable Product (MVP), MVP Design, Proof of Concept (POC), Crypto, Bitcoin, CI/CD Pipelines, Algorithmic Trading, Chrome Extensions, Mobile App Development, SMS, UI Frameworks, UI Libraries, Design, Real-time Streaming, SSL, TradingView, Solana

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