Tal is available for hire

Tal Grynbaum

Verified Expert in Engineering

Back-end Developer

Location

Meneou, Cyprus

Toptal Member Since

August 4, 2022

Tal is an experienced software engineer and entrepreneur who has managed several multi-level projects and is passionate about finding simple, efficient solutions to complex problems. He has vast knowledge in multiple software development areas and technology. Tal is familiar with working in various company sizes, from small startups to large corporations.

Portfolio

Power My Analytics

TypeScript, Firebase, Cloud Firestore, Google Cloud Platform (GCP), MySQL...

Harvard Kennedy School of Government - Main (Toptal Projects)

Full-stack, Web Development, System Architecture, Data Visualization...

Investing.com

Node.js, GraphQL, Go, PostgreSQL, Apache Cassandra, Aerospike, PHP...

Experience

Node.js - 9 years MongoDB - 7 years Android - 3 years Bitcoind - 3 years Android SDK - 3 years Solidity - 2 years GraphQL - 2 years Apollo Server - 2 years

Availability

Part-time

Preferred Environment

Node.js, GraphQL, Technical Leadership

The most amazing...

...thing I've developed is an insanely secured cryptocurrency exchange, which operates under the premise that any service can be hacked, but no harm can be done.

Work Experience

CTO

2022 - 2024

Power My Analytics

Developed a marketing automation platform that connects to 50+ advertising and eCommerce platforms.
Managed a distributed development team of eight developers.
Managed developing new connectors and migrating existing connectors to a new technology.

Technologies: TypeScript, Firebase, Cloud Firestore, Google Cloud Platform (GCP), MySQL, Google Cloud Functions, Google BigQuery, HubSpot

Full-stack Lead Developer

2022 - 2022

Harvard Kennedy School of Government - Main (Toptal Projects)

Researched various visualization tools and libraries suitable for Harvard's requirements.
Created architecture for Harvard's Workforce development sector almanac.
Planned the development effort and required team for the implementation.

Technologies: Full-stack, Web Development, System Architecture, Data Visualization, Web Frameworks, Requirements Analysis, Google Cloud Platform (GCP), Data Science, Data Warehousing, Leadership, Debugging, Object-oriented JavaScript (OOJS), Asynchronous Programming, Mapbox, User Interface (UI), D3.js, Netlify, Software Design, Scalable Application, Databases, JSON, Charts, Interactive Maps, Interactive UI, GitHub

Director of Innovation Lab

2020 - 2022

Investing.com

Refactored the company's old PHP infrastructure to use a modern GraphQL server.
Managed a project of migrating our fundamental financial data provider.
Designed a brand new real-time quotes delivery system, supporting delivery of real-time quotes of 300,000+ financial instruments to a huge number of concurrent subscribers.

Technologies: Node.js, GraphQL, Go, PostgreSQL, Apache Cassandra, Aerospike, PHP, Apollo Server, ScyllaDB, Redis, Kubernetes, Docker, React, JavaScript, JavaScript Testing, Java, Test-driven Development (TDD), Spring Boot, HTML, Python, SQL, Architecture, Unit Testing, Continuous Integration (CI), Continuous Delivery (CD), Integration Testing, Login & Registration, REST, Google Cloud Platform (GCP), Express.js, Git, Full-stack, Web Development, System Architecture, Requirements Analysis, Vanilla JS, Responsive UI, Next.js, Technical Leadership, Software Architecture, Team Leadership, Remote Team Leadership, Fintech, Back-end, REST APIs, ETL, Pandas, Jira, CI/CD Pipelines, Software Development Lifecycle (SDLC), Back-end Architecture, Microservices, Cryptocurrency, Leadership, MERN Stack, Web Frameworks, Heroku, IT Strategy, Full-stack Development, Minimum Viable Product (MVP), gRPC, PHP 7, Data Scraping, RabbitMQ, Front-end, Sass, Scalability, Technical Hiring, Source Code Review, Code Review, Task Analysis, Interviewing, JavaScript 6, Continuous Deployment, Service Meshes, NGINX, Linux, Containers, Layer7 API Gateway, Mobile, Google Cloud, Debugging, Object-oriented Design (OOD), Object-oriented Programming (OOP), Object-oriented JavaScript (OOJS), Asynchronous Programming, Asynchronous Servers, Jest, Cypress, Jenkins, User Interface (UI), Concurrent Programming, Socket.IO, Authentication, API Integration, Dashboards, Figma, Software Design, Scalable Application, Scalable Architecture, Metrics, Elasticsearch, NoSQL, Databases, Cloud, OAuth, Web Services, Design Patterns, AWS Cloud Architecture, Cloud Platforms, JSON, Interactive UI, Mobile Apps, Scrum, Payment APIs, API Development, Key Performance Indicators (KPIs), Amazon S3 (AWS S3), Headless Software, GitHub

CTO

2019 - 2020

Market Group

Managed the development of a full-scale eCommerce marketplace, using the market.com and sport.com domain names. It was set to compete with leading marketplaces like Amazon and Wish.
Developed a state-of-the-art, microservices-oriented platform with over 100 microservices.
Managed company-level architecture, platform, data configuration processes, and implementation protocols.
Collaborated with third-party vendors to implement a new mobile app.
Interpreted multifaceted technological issues into defined frameworks and highly scripted action plans.

Technologies: .NET Core, MongoDB, Kubernetes, MySQL, Docker, React, Angular, Vault, Magento 2, Shopify, Shopify API, PWA, PWABuilder, Progressive Web Applications (PWA), Android, TypeScript, APIs, Apollo Server, Java, CSS, Bootstrap, SQL, Architecture, Unit Testing, Vue, Continuous Integration (CI), Continuous Delivery (CD), Integration Testing, Video Streaming, Login & Registration, REST, NestJS, Amazon Web Services (AWS), Git, Full-stack, Web Development, System Architecture, Requirements Analysis, Custom Shopify Apps, Shopify Customizations, Vanilla JS, Responsive UI, .NET, jQuery, Microsoft SQL Server, Next.js, Storybook, CTO, Technical Leadership, Software Architecture, Team Leadership, Remote Team Leadership, Back-end, Serverless, REST APIs, Jira, Software Development Lifecycle (SDLC), Security, Back-end Architecture, Microservices, Leadership, MERN Stack, IT Strategy, NgRx, MEAN Stack, C#, C#.NET, Full-stack Development, Minimum Viable Product (MVP), Firebase, New Relic, Auth0, AWS Lambda, Stripe API, Stripe, OAuth 2, Front-end, Less, Scalability, Technical Hiring, Source Code Review, Code Review, Task Analysis, Interviewing, JavaScript 6, Continuous Deployment, NGINX, Linux, Containers, Layer7 API Gateway, Webpack, Mobile, Cloud Firestore, React Native, Google Analytics, Debugging, Object-oriented Design (OOD), Object-oriented Programming (OOP), Object-oriented JavaScript (OOJS), Asynchronous Programming, Asynchronous Servers, Jest, User Interface (UI), Concurrent Programming, Socket.IO, OpenID, Authentication, API Integration, Dashboards, Figma, Software Design, Scalable Application, Scalable Architecture, Elasticsearch, NoSQL, Databases, Cloud, OAuth, Distributed Systems, Web Services, Design Patterns, AWS Cloud Architecture, Online Payments, Cloud Platforms, JSON, Webhooks, Charts, Interactive UI, Firebase Realtime Database, Mobile Apps, Payment Gateways, Scrum, Payment APIs, API Development, Key Performance Indicators (KPIs), eCommerce, Card Payments, Credit Cards, Amazon S3 (AWS S3), Headless Software, GitHub

CTO

2018 - 2019

TMobi

Led the development of mobile advertising SDK and apps.
Managed company-level architecture, platform, and data configuration processes as well as implementation protocols.
Maintained high-level knowledge of current and emerging technology development and applications.

Technologies: Java, Android, Tableau, Greenplum, Android SDK, Big Data, Data Lakes, SQL, Architecture, Git, Full-stack, System Architecture, Data Visualization, Vanilla JS, CTO, Technical Leadership, Software Architecture, Team Leadership, Remote Team Leadership, Back-end, REST APIs, Software Development Lifecycle (SDLC), Back-end Architecture, Leadership, Data Warehousing, IT Strategy, Sockets, Full-stack Development, Scalability, Technical Hiring, Source Code Review, Code Review, Interviewing, NGINX, Linux, Containers, Mobile, Google Analytics, Debugging, Object-oriented Design (OOD), Object-oriented Programming (OOP), Asynchronous Programming, Asynchronous Servers, Concurrent Programming, API Integration, Software Design, Scalable Application, Scalable Architecture, NoSQL, Databases, Design Patterns, JSON, Mobile Apps, API Development, GitHub

CTO

2017 - 2018

Omnibit

Led the development of a cryptocurrency exchange system and various crypto-related products.
Managed company-level architecture, platform, and data configuration processes as well as implementation protocols.
Tested security technologies regularly and implemented network penetration assessment tools.
Provided project leadership in a dynamic, technology-driven environment with multiple priorities.
Developed and implemented a long-term strategic technological blueprint.

Technologies: Go, Node.js, Apache Kafka, HBase, Bitcoind, Ethereum, Kubernetes, Docker, React, WebSockets, HTML, CSS, Big Data, SQL, Architecture, Unit Testing, Continuous Integration (CI), Continuous Delivery (CD), Integration Testing, Material UI, Login & Registration, REST, Amazon Web Services (AWS), Express.js, Git, Full-stack, Web Development, System Architecture, Vanilla JS, Responsive UI, jQuery, Storybook, Smart Contracts, CTO, Technical Leadership, Software Architecture, Team Leadership, Fintech, Redux, Back-end, REST APIs, Spark, DevOps, CI/CD Pipelines, Software Development Lifecycle (SDLC), Security, Back-end Architecture, Money Transfers, Know Your Customer (KYC), Microservices, Blockchain, Trading, Cryptocurrency, Leadership, MERN Stack, Web Frameworks, IT Strategy, UI Design, Sockets, Microsoft Office SDK, Office Add-ins, Full-stack Development, Minimum Viable Product (MVP), React Redux, New Relic, Auth0, AWS Lambda, OAuth 2, Front-end, Sass, Scalability, Technical Hiring, Source Code Review, Code Review, Task Analysis, Interviewing, JavaScript 6, JavaScript Charting, Continuous Deployment, NGINX, Linux, Containers, Webpack, Mobile, Google Analytics, Debugging, Object-oriented Design (OOD), Object-oriented Programming (OOP), Object-oriented JavaScript (OOJS), Asynchronous Programming, Asynchronous Servers, Jest, Cypress, Jenkins, User Interface (UI), Concurrent Programming, Socket.IO, Authentication, API Integration, UX Design, Dashboards, Figma, Software Design, Scalable Application, Scalable Architecture, NoSQL, Databases, Cloud, OAuth, Distributed Systems, Web Services, Design Patterns, AWS Cloud Architecture, Online Payments, Cloud Platforms, Non-fungible Tokens (NFT), JSON, Charts, Interactive UI, Remix IDE, Payment Gateways, Scrum, API Development, Key Performance Indicators (KPIs), Card Payments, Amazon S3 (AWS S3), GitHub

CTO & Co-founder

2015 - 2017

Apprival

Founded a mobile intelligence platform and developed most of its code, including the Android SDK, the Node.js back end, and its big data processing in Scala on Spark.
Participated in Dreamit NY, a leading startup incubation program.
Led the company through two rounds of fundraising.

Technologies: Android SDK, Node.js, Scala, Apache Spark, Amazon Elastic MapReduce (EMR), Amazon EC2, MongoDB, Angular, WebSockets, Android, HTML, Python, CSS, Bootstrap, Big Data, Data Lakes, SQL, Architecture, Unit Testing, Video Streaming, Material UI, Login & Registration, REST, Amazon Web Services (AWS), Express.js, Git, Full-stack, Web Development, System Architecture, Data Visualization, Requirements Analysis, Vanilla JS, Responsive UI, jQuery, CTO, Technical Leadership, Software Architecture, Team Leadership, Back-end, REST APIs, ETL, Spark, DevOps, Databricks, Software Development Lifecycle (SDLC), Back-end Architecture, Data Warehousing, MERN Stack, Data Science, Web Frameworks, Heroku, IT Strategy, UI Design, Visualization Design, User Experience (UX), RxJS, MEAN Stack, Full-stack Development, Minimum Viable Product (MVP), New Relic, Auth0, Data Scraping, Stripe API, Stripe, OAuth 2, Front-end, Scalability, Technical Hiring, Source Code Review, Code Review, Task Analysis, Interviewing, JavaScript Charting, Continuous Deployment, NGINX, Linux, WordPress, Mobile, Google Cloud, Google Analytics, Debugging, Object-oriented Design (OOD), Object-oriented Programming (OOP), Object-oriented JavaScript (OOJS), Asynchronous Programming, Asynchronous Servers, Jest, User Interface (UI), Gaming, Concurrent Programming, Socket.IO, Authentication, API Integration, UX Design, Dashboards, Software Design, Scalable Application, Scalable Architecture, NoSQL, Databases, Cloud, OAuth, Web Services, Design Patterns, AWS Cloud Architecture, Online Payments, Cloud Platforms, JSON, Charts, Interactive UI, Mobile Apps, Payment Gateways, Payment APIs, API Development, Card Payments, Credit Cards, Amazon S3 (AWS S3), GitHub

CTO & Co-founder

2013 - 2014

Cryptodom

Co-founded a software development company focused on developing cryptocurrency solutions, which included a highly scalable and customizable gaming platform for casino games.
Oversaw every aspect of the project, including planning, designing the architecture, coding, and deploying the platform on cloud servers.
Developed 3D front-end games using HTML5, three.js, GSAP, and CSS3.

Technologies: Node.js, FlashAir, HTML5, GreenSock Animation Platform (GSAP), Three.js, CSS3, WebSockets, PHP, MongoDB, Bitcoind, HTML, CSS, WebGL, SQL, Architecture, QR Codes, REST, Amazon Web Services (AWS), Git, Full-stack, Web Development, System Architecture, Data Visualization, Requirements Analysis, Vanilla JS, Responsive UI, jQuery, CTO, Technical Leadership, Software Architecture, Team Leadership, Back-end, REST APIs, DevOps, Software Development Lifecycle (SDLC), Security, Back-end Architecture, Blockchain, Cryptocurrency, Leadership, MERN Stack, Web Frameworks, Heroku, IT Strategy, UI Design, Visualization Design, UI Animation, User Experience (UX), Full-stack Development, Minimum Viable Product (MVP), New Relic, Auth0, OAuth 2, Front-end, Scalability, Technical Hiring, Source Code Review, Code Review, Task Analysis, Interviewing, JavaScript Charting, NGINX, Linux, WordPress, Google Analytics, Debugging, Games, Object-oriented Design (OOD), Object-oriented Programming (OOP), Object-oriented JavaScript (OOJS), Asynchronous Programming, Asynchronous Servers, User Interface (UI), Gaming, Concurrent Programming, Socket.IO, Authentication, API Integration, UX Design, Dashboards, Software Design, Scalable Application, Scalable Architecture, NoSQL, Databases, Cloud, OAuth, Web Services, Design Patterns, AWS Cloud Architecture, Online Payments, Cloud Platforms, JSON, Interactive UI, API Development, GitHub

CTO & Co-founder

2011 - 2013

Appwrks

Co-founded a company that developed a platform for social gaming that allowed game developers to concentrate on building the game itself while the platform handled any other aspect of the game.
Ensured the platform was highly scalable to support social applications with hundreds of thousands of daily active users.
Developed our home brand social casino to showcase the platform.

Technologies: Java, Node.js, MySQL, MongoDB, WebSockets, PostgreSQL, PHP, HTML, CSS, SQL, Architecture, REST, Amazon Web Services (AWS), Git, Full-stack, Web Development, System Architecture, Data Visualization, Requirements Analysis, Vanilla JS, CTO, Technical Leadership, Software Architecture, Team Leadership, Back-end, REST APIs, DevOps, Software Development Lifecycle (SDLC), Back-end Architecture, Leadership, MERN Stack, Web Frameworks, IT Strategy, Visualization Design, Full-stack Development, Minimum Viable Product (MVP), New Relic, Front-end, Scalability, Technical Hiring, Source Code Review, Code Review, Interviewing, JavaScript Charting, NGINX, Linux, WordPress, Google Analytics, Debugging, Games, Object-oriented Design (OOD), Object-oriented Programming (OOP), Asynchronous Programming, Asynchronous Servers, User Interface (UI), Gaming, Concurrent Programming, Socket.IO, API Integration, UX Design, Dashboards, Software Design, Scalable Application, Scalable Architecture, NoSQL, Databases, Cloud, Web Services, Design Patterns, AWS Cloud Architecture, Online Payments, Cloud Platforms, JSON, Interactive UI, Scrum, API Development, Key Performance Indicators (KPIs), Amazon S3 (AWS S3), GitHub

CTO

2010 - 2011

XWise R&D

Managed the team that developed the marketing and affiliate system used by major online casino operators such as William Hill, Ladbrokes, and Europartners.
Took over and improved a poorly-implemented product developed by a Bulgarian company that supported only a couple of hundred requests per second.
Supervised the team that improved the product mentioned above to support 50,000 requests per second on the same hardware.

Technologies: Oracle, Java, Hibernate, GWT, Spring, HTML, SQL, AWS CloudFormation, Architecture, REST, Amazon Web Services (AWS), Git, Full-stack, Web Development, System Architecture, Requirements Analysis, CTO, Technical Leadership, Software Architecture, Team Leadership, Back-end, REST APIs, ETL, Jira, DevOps, Software Development Lifecycle (SDLC), Back-end Architecture, Leadership, Web Frameworks, IT Strategy, Full-stack Development, Minimum Viable Product (MVP), Scalability, Technical Hiring, Source Code Review, Code Review, Interviewing, Linux, Debugging, Games, Object-oriented Design (OOD), Object-oriented Programming (OOP), User Interface (UI), Gaming, Concurrent Programming, Dashboards, Software Design, Scalable Application, Scalable Architecture, NoSQL, Databases, Cloud, Design Patterns, AWS Cloud Architecture, Cloud Platforms, JSON, Scrum, API Development, Key Performance Indicators (KPIs)

Chief Architect

2008 - 2010

Playtech

Oversaw the company's entire architecture and development efforts and managed three local architects.
Managed the development of Playtech's next-generation multiplayer game server and environment. Assembled a team of 25 top developers in the company.
Performed technical due diligence for the various companies that Playtech was interested in acquiring.

Technologies: Java, GigaSpaces, Redis, Oracle, Spring, JEE, Amazon Web Services (AWS), HTML, SQL, Architecture, Continuous Integration (CI), Git, System Architecture, Technical Leadership, Software Architecture, Team Leadership, Back-end, REST APIs, Jira, Software Development Lifecycle (SDLC), Security, Back-end Architecture, Leadership, IT Strategy, Sockets, Full-stack Development, Minimum Viable Product (MVP), Scalability, Technical Hiring, Source Code Review, Code Review, Interviewing, Linux, Debugging, Games, Object-oriented Design (OOD), Object-oriented Programming (OOP), Solution Architecture, Gaming, Concurrent Programming, API Integration, Software Design, Scalable Application, Scalable Architecture, Databases, Cloud, Design Patterns, API Development

CTO

2006 - 2007

Projelogic

Supervised the technology development in a group of companies held by the same owner, which included gaming operators, payment processors, a hotel chain, a booking site and others.
Closely designed and monitored the development of an affiliate system.
Performed technical due diligence for multiple perspective companies.

Technologies: Java, GigaSpaces, Oracle, Technical Hiring, Code Review, Interviewing, Linux, Travel & Leisure, Debugging, Object-oriented Design (OOD), Object-oriented Programming (OOP), Software Design, Scalable Application, Scalable Architecture, Databases

Chief Architect

2000 - 2007

Jacada

Integrated the cross-protocol communication layer with Jacada's tools.
Managed a development team building integration software for the mainframe and AS/400 machines.
Designed and developed Jacada's tools for call centers and deployed them to various clients, including West Corp and Vodafone.
Developed a .NET application server based on Jakarta EE concepts.

Technologies: Java, C#, C#.NET, Windows Internals, Mainframe, IBM Mainframe, CICS, IBM Db2, C, C++, Assembly, JBoss AS, IBM WebSphere, BEA WebLogic Server, Visual Basic for Applications (VBA), Visual Basic, Full-stack Development, Technical Hiring, Code Review, Interviewing, Linux, Debugging, Object-oriented Design (OOD), Object-oriented Programming (OOP), Solution Architecture, Concurrent Programming, Software Design, Scalable Application, Scalable Architecture, Databases

Engineering Manager

1999 - 2000

Sun Microsystems

Developed connectors for Sun's application servers that connect to various external platforms, including mainframes, AS/400, MQSeries, and Tuxedo.
Participated in the JEE Community that specified specs for Java Enterprise Edition.
Promoted and lectured about JEE for Sun's customers and at conferences.

Technologies: C, C++, Java, JEE, Enterprise Java Beans (EJB), IBM MQ, IBM Mainframe, CICS, IBM Db2, Debugging, Object-oriented Design (OOD), Object-oriented Programming (OOP), Concurrent Programming, Software Design, Scalable Application, Scalable Architecture, Databases

Experience

Investing.com

http://investing.com

A leading financial portal for retail investors, with 4 billion monthly page views. It provides fundamental data and real-time quotes for over 300,000 financial instruments, including breaking news, ideas, and charts.

Cryptocurrencies Exchange

I served as a hands-on CTO of a Romanian-based cryptocurrency exchange, managing a team of 12 developers. We have developed highly scalable microservices in Go and Node.js, with an extreme focus on security and protection from hacking.

market.com - eCommerce marketplace

Managed the development of dot.net core, a microservices-based eCommerce marketplace platform. I led a team of ten developers. The platform was comprised of more than 100 different fine-grained microservices.
The back end was designed as a headless back end, which served both the web/mobile web Angular client and iOS and Android native apps. The marketplace hosted around 100 merchant accounts.

Certifications

NOVEMBER 2022 - PRESENT

AWS Certified Solutions Architect – Associate

Amazon Web Services

Skills

Libraries/APIs

Node.js, React, REST APIs, RxJS, Sockets, Socket.IO, API Development, jQuery, NgRx, React Redux, Stripe API, Stripe, JavaScript Charting, OpenID, Three.js, Shopify API, WebGL, Vue, Pandas, D3.js

Tools

Git, Jira, Auth0, GitHub, Amazon Elastic MapReduce (EMR), RabbitMQ, NGINX, Webpack, Google Analytics, Jenkins, Figma, Remix IDE, Tableau, Amazon Simple Email Service (SES), JavaScript Testing, Vault, PWABuilder, AWS CloudFormation, IBM MQ, AWS IAM, AWS CLI

Frameworks

Android SDK, Express.js, Vanilla JS, .NET, Next.js, Spark, OAuth 2, Apache Spark, Angular, GigaSpaces, Spring, Spring Boot, Bootstrap, Material UI, Redux, Web Frameworks, gRPC, React Native, Jest, .NET Core, Hibernate, GWT, NestJS, Cypress, AWS HA

Languages

GraphQL, Go, Java, JavaScript, TypeScript, HTML, SQL, CICS, C++, JavaScript 6, Object-oriented JavaScript (OOJS), PHP, HTML5, Kotlin, Python, CSS, C#, C#.NET, C, Assembly, Visual Basic for Applications (VBA), Visual Basic, PHP 7, Solidity, Scala, CSS3, Less, Sass

Paradigms

REST, Requirements Analysis, Back-end Architecture, Microservices, MEAN Stack, Object-oriented Design (OOD), Object-oriented Programming (OOP), Asynchronous Programming, Concurrent Programming, Scalable Application, Design Patterns, Scrum, Agile, Test-driven Development (TDD), Unit Testing, ETL, DevOps, UI Design, Continuous Deployment, Continuous Integration (CI), Continuous Delivery (CD), Data Science, UX Design

Platforms

Android, Apache Kafka, Amazon EC2, Docker, Amazon Web Services (AWS), Linux, Mobile, Kubernetes, Oracle, Sanity Studio, Shopify, JEE, Databricks, Blockchain, Heroku, Firebase, New Relic, AWS Lambda, WordPress, Netlify, Ethereum, GreenSock Animation Platform (GSAP), Magento 2, Google Cloud Platform (GCP), IBM WebSphere, Mapbox, AWS NLB, HubSpot

Storage

PostgreSQL, MongoDB, MySQL, IBM Mainframe, IBM Db2, NoSQL, Databases, JSON, Amazon S3 (AWS S3), Aerospike, Greenplum, HBase, Redis, Data Lakes, JBoss AS, Google Cloud, Elasticsearch, Firebase Realtime Database, ScyllaDB, Microsoft SQL Server, Cloud Firestore

Industry Expertise

Travel & Leisure

Other

Apollo Server, Bitcoind, APIs, Architecture, Full-stack, Web Development, System Architecture, CTO, Technical Leadership, Software Architecture, Team Leadership, Remote Team Leadership, Back-end, Software Development Lifecycle (SDLC), Trading, Cryptocurrency, Leadership, MERN Stack, IT Strategy, Full-stack Development, Minimum Viable Product (MVP), Data Scraping, Front-end, Scalability, Technical Hiring, Source Code Review, Code Review, Task Analysis, Interviewing, Containers, Debugging, Games, Asynchronous Servers, Solution Architecture, User Interface (UI), Gaming, Authentication, API Integration, Dashboards, Software Design, Scalable Architecture, Metrics, Cloud, OAuth, Distributed Systems, Web Services, AWS Cloud Architecture, Online Payments, Cloud Platforms, Webhooks, Interactive UI, Mobile Apps, Key Performance Indicators (KPIs), eCommerce, Headless Software, WebSockets, Encryption, Advanced Encryption Standard (AES), RSA, PWA, Progressive Web Applications (PWA), Big Data, QR Codes, Login & Registration, Data Visualization, Responsive UI, Smart Contracts, Fintech, Serverless, CI/CD Pipelines, Security, Money Transfers, Know Your Customer (KYC), Data Warehousing, Visualization Design, UI Animation, User Experience (UX), Microsoft Office SDK, Office Add-ins, Layer7 API Gateway, Non-fungible Tokens (NFT), Interactive Maps, Payment Gateways, Payment APIs, Card Payments, Credit Cards, Apache Cassandra, FlashAir, Content Management Systems (CMS), Integration Testing, Video Streaming, Custom Shopify Apps, Shopify Customizations, Storybook, Windows Internals, Mainframe, BEA WebLogic Server, Enterprise Java Beans (EJB), Service Meshes, Charts, Google Cloud Functions, Google BigQuery

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