Israel is available for hire
Hire IsraelIsrael Abraham Fraga
Verified Expert in Engineering
Full-stack Developer
Monterrey, Mexico
Toptal member since January 3, 2022
Bio
Fraga is a full-stack software developer and architect with 15+ years of experience. His main focus is developing software, leading teams, and providing consulting services for multinational corporations. As an expert in writing clean code and developing high-availability systems, Fraga produces standard, measurable, and scalable software.
Portfolio
Daggerhart Lab, LLC
Node.js, Back-end, PHP, Ontraport, Twilio, Twilio API, React, MongoDB
ChipStack Inc.
TypeScript, JavaScript, HTML, CSS, React, OpenAI GPT-4 API, LangChain...
Altos Labs
Front-end, Low Code, Low-code Development, JavaScript, REST APIs, UI Design...
Experience
Availability
Part-time
Preferred Environment
MongoDB, Angular, TypeScript, JavaScript, .NET, SQL, Node.js, CSS, HTML, React
The most amazing...
...project I've led is Archivistic, a cloud-based document management system for millions of files for a startup based in Silicon Valley.
Work Experience
[Americas | Node.js] Backend developer for a PDF generation platform
2024 - 2024
Daggerhart Lab, LLC
- Engineered and implemented a suite of advanced tools for a large-scale sales funnel on the Ontraport platform, significantly enhancing lead acquisition, conversion rates, and customer retention through automated processes.
- Seamlessly integrated a legacy PHP platform with Ontraport, automating workflows, enhancing log management, and bolstering security protocols to ensure a smooth and secure data exchange between systems.
- Designed a scalable PDF generation solution to efficiently produce client pet support letters.
- Built an SMS tool using Twilio to send 500,000 messages daily, strategically distributed between 11 AM and 7 PM to prevent server overload.
Technologies: Node.js, Back-end, PHP, Ontraport, Twilio, Twilio API, React, MongoDB
Front-end Developer
2023 - 2024
ChipStack Inc.
- Built a GitHub Copilot specifically to help chip developers.
- Handled full-stack development, from the UI to the back end and database.
- Helped the company get a huge investment—thanks to this MVP.
Technologies: TypeScript, JavaScript, HTML, CSS, React, OpenAI GPT-4 API, LangChain, Hugging Face, Visual Studio Code (VS Code), Machine Learning, Artificial Intelligence (AI), Large Language Models (LLMs), Prompt Engineering, ChatGPT, Scraping
Low-code Integration Developer
2023 - 2023
Altos Labs
- Developed tools to sync data between laboratories working to make humans live longer.
- Solved numerous issues with creativity and low-code solutions based on a system called Foundry.
- Connected three different laboratories and shared information between them with multiple data sources, from mouse colonies to specialized equipment.
Technologies: Front-end, Low Code, Low-code Development, JavaScript, REST APIs, UI Design, Data Visualization, Python, Foundry
Front-end Developer
2022 - 2022
BCG - Gamma
- Added new features and made improvements in three main applications.
- Tracked and fixed all tickets in Jira, including bugs, and improved all pipeline issues.
- Made significant improvements with two applications, converting designs from Figma to the actual first test version of the product.
Technologies: JavaScript, Cloud, Runtime Debugging, Highcharts, Git, CSS, HTML, API Hooking, React, TypeScript, Amazon Web Services (AWS), Microsoft SQL Server, Webpack, REST, Docker, GraphQL, TypeScript 3, Express.js, APIs, Third-party APIs, React Native, RxJS, NgRx, Flexbox, Real-time Bidding (RTB), Algorithms, Python, Continuous Integration (CI), Continuous Development (CD), Microsoft Development, Serverless, Architecture, Front-end Architecture, Windows Presentation Foundation (WPF), Microsoft Visual Studio, WebSockets, Amazon EC2, AWS Lambda, Three.js, WebGL
Senior Full-stack Developer and Architect
2019 - 2022
IBV
- Developed and architected the HEAT app that helps venture funds to admin deals originating.
- Tracked and fixed bugs for the team and scrum master and handled all day-to-day development processes.
- Split all the services into scalable solutions using microservices in both AWS and GCP systems and controlled them with Jira solutions.
Technologies: Angular, React, Google Cloud Platform (GCP), Amazon Web Services (AWS), Node.js, Amazon DynamoDB, Amazon API Gateway, WebSockets, Message Queues, HTML5, Bootstrap, MongoDB, Linux, Microsoft SQL Server, Webpack, REST, Docker, TypeScript 3, Express.js, APIs, Full-stack Development, Third-party APIs, Team Leadership, Responsive Web Apps, RxJS, NgRx, Flexbox, Real-time Bidding (RTB), Algorithms, Continuous Integration (CI), Continuous Development (CD), ECMAScript (ES6), Microsoft Development, Microsoft Word Development, Serverless, User Interface (UI), Architecture, Front-end Architecture, Microsoft Visual Studio, Amazon EC2, Amazon S3 (AWS S3), AWS Lambda, Scraping
Software Architect
2020 - 2021
EY
- Contributed to creating the framework and application that analyze larger volumes of audit-relevant data to derive insights and a more in-depth understanding of EY clients' financial closures and business operations.
- Designed and developed the main framework; helped my team determine everything from the design choices to technical standards, such as platforms and coding best practices.
- Managed 50+ developers offshore and helped multiple teams with the most complicated issues or new features.
- Designed, developed, and executed software solutions to address business issues.
- Provided architectural blueprints and technical leadership to our IT team.
- Built, tested, and released software in short cycles to keep the continuous delivery pipeline.
- Conducted code review and tracked all solved DevOps tickets.
- Interconnected several other systems to enable the team a highly visible and collaborative execution.
- Manipulated SQL Server and MySQL database management system's data using CRUD operations (create, read, update, and delete); handled database access and data transmission based on RESTful web service.
Technologies: TypeScript, Angular, C#.NET, SQL Server DBA, Azure, Visual Studio Code (VS Code), MongoDB, AG Grid, SheetJS, JavaScript, DevOps, .NET, Node.js, SQL, CSS, HTML, jQuery UI, REST APIs, Web MVC, Highcharts, Front-end, Back-end, Full-stack, Microservices, C#, .NET Core, ASP.NET Core, HTML5, CSS3, User Experience (UX), User Interface (UI), Libraries, jQuery, Azure DevOps, Azure SQL, RDBMS, Git, GitHub, UI Testing, Unit Testing, Amazon Web Services (AWS), Material UI, Runtime Debugging, Cloud, API Hooking, Agile, Swagger, SCSS, Adobe Experience Design (XD), Responsive, CI/CD Pipelines, MERN Stack, Bootstrap, Microsoft SQL Server, Webpack, REST, TypeScript 3, Express.js, APIs, Full-stack Development, Third-party APIs, Team Leadership, Responsive Web Apps, Flexbox, Real-time Bidding (RTB), Algorithms, Continuous Integration (CI), Continuous Development (CD), ECMAScript (ES6), Microsoft Development, Microsoft Word Development, Serverless, Architecture, Front-end Architecture, Microsoft Visual Studio, Amazon EC2, Amazon S3 (AWS S3), AWS Lambda, Three.js, WebGL
Full-stack Software Developer and Architect
2019 - 2020
Tesla
- Wrote, migrated, localized, and tested solutions for the material requirements planning (MRP) system.
- Optimized the production line forecasting by working on the production planning and inventory control system that manages manufacturing processes.
- Kept the car parts inventory in a perfect balance to be ready for production as needed. Developed a whole document management system for e-signing of contracts from scratch.
- Created the web client application using HTML 5, CSS 3, and Angular.
- Kept all tickets from Jira solved and trackable with Stash Bitbucket.
- Maintained the continuous delivery pipeline by building, testing, and releasing software in a short cycle.
- Used CRUD operations to manipulate SQL Server and MySQL database management system's data and handled database access and transmission based on RESTful web service.
- Interconnected several other systems that allowed the team a visible and collaborative execution of tasks; reviewed code of team members.
Technologies: C#, Azure, DevOps, TypeScript, Angular, Visual Studio Code (VS Code), MongoDB, SQL Server DBA, AG Grid, SheetJS, JavaScript, C#.NET, .NET, SQL, Node.js, CSS, HTML, jQuery UI, IIS, REST APIs, Web MVC, Highcharts, Front-end, Back-end, Full-stack, Microservices, .NET Core, ASP.NET Core, HTML5, CSS3, User Experience (UX), User Interface (UI), Libraries, jQuery, Azure DevOps, Azure SQL, RDBMS, Git, GitHub, UI Testing, Unit Testing, Amazon Web Services (AWS), Material UI, Runtime Debugging, Cloud, API Hooking, Agile, Swagger, SCSS, Adobe Experience Design (XD), Responsive, CI/CD Pipelines, MERN Stack, Bootstrap, Microsoft SQL Server, Webpack, REST, TypeScript 3, Express.js, APIs, Full-stack Development, Third-party APIs, Responsive Web Apps, Flexbox, Algorithms, Continuous Integration (CI), Continuous Development (CD), ECMAScript (ES6), Microsoft Development, Microsoft Word Development, Desktop App Development, Front-end Architecture, Microsoft Visual Studio, WebSockets
Full-stack Software Developer and Architect
2014 - 2019
TeleGestión de México
- Managed, wrote, migrated, and tested a solution for collecting debts for 100,000+ accounts used by over 300 call agents. The solution helped the company reduce costs by optimizing the number and duration of calls and improving the success rate.
- Increased the debt collection by 300% using business intelligence with dedicated software development that improved the accounts splitting, dialing rules, and accounts info.
- Designed the entire architecture based on components, services, and logical and physical database; created collections, indexes, and relations on MongoDB and planned the ETL migration with Pentaho.
- Developed the REST APIs and web services using Node.js, Express, and MongoDB.
- Built scalable web applications using the load balance, best layering standards, and database tuning.
- Performed the advanced development in C# for interaction with other systems and data encryption; involved in the deployment and troubleshooting activities for the application during go-live.
Technologies: TypeScript, Angular, MongoDB, Asterisk, Linux, C#.NET, Visual Studio Code (VS Code), SQL Server DBA, JavaScript, MBaaS, Azure, .NET, SQL, Node.js, CSS, HTML, jQuery UI, IIS, VisualSVN, REST APIs, Web MVC, ASP.NET, Front-end, Back-end, Full-stack, Microservices, C#, HTML5, CSS3, User Experience (UX), User Interface (UI), Libraries, jQuery, Google Cloud, RDBMS, Git, GitHub, UI Testing, Unit Testing, Amazon Web Services (AWS), Material UI, Entity Framework, Runtime Debugging, Cloud, API Hooking, Agile, Swagger, SCSS, Adobe Experience Design (XD), Responsive, CI/CD Pipelines, MERN Stack, Bootstrap, Microsoft SQL Server, Webpack, REST, TypeScript 3, Express.js, APIs, Full-stack Development, Third-party APIs, Team Leadership, Responsive Web Apps, Real-time Bidding (RTB), Algorithms, Continuous Integration (CI), Continuous Development (CD), Web & Mobile Applications, ECMAScript (ES6), Microsoft Development, Microsoft Word Development, Natural Language Processing (NLP), Generative Pre-trained Transformers (GPT), Azure App Service, Desktop App Development, Architecture, Front-end Architecture, Windows Presentation Foundation (WPF), Microsoft Visual Studio, WebSockets, WordPress
Enterprise Architect
2008 - 2011
Abatta Systems
- Developed the code and architecture of several solutions for well-known Fortune 500 companies.
- Contributed to more than three projects simultaneously, working with different software technologies and clients and delivering solutions on time.
- Led and developed order and shipping control software for Shell’s oil pipelines in Mexico.
- Created and developed production control software that manages hundreds of variables and features, coming up with an accurate production cost for each advertisement for Sección Amarilla, the Mexican yellow pages.
- Designed the UI screens with HTML and CSS, developed the GUI, and utilized secure APIs from Authorize.Net for the e-payment part of the website.
- Developed the user interface—web forms—for the modules using ASP.NET server controls, validation controls, and HTML for the front-end ordering system, where business logic was implemented using C# ASP.NET.
- Used Kanban for tracking and collaborating with the team, planned and estimated the technical design aspects, and prepared the design documents.
Technologies: C#.NET, ASP.NET, Web MVC, SQL Server DBA, Linux, REST APIs, .NET, CSS, SQL, HTML, jQuery UI, IIS, VisualSVN, JavaScript, Front-end, Back-end, Full-stack, Microservices, PHP, MySQL, C#, HTML5, CSS3, User Experience (UX), User Interface (UI), Libraries, jQuery, Azure SQL, Google Cloud, RDBMS, UI Testing, Unit Testing, Amazon Web Services (AWS), Entity Framework, Runtime Debugging, Cloud, API Hooking, Agile, SCSS, Responsive, CI/CD Pipelines, Microsoft SQL Server, REST, TypeScript 3, APIs, Full-stack Development, Third-party APIs, Team Leadership, Responsive Web Apps, Real-time Bidding (RTB), Ads, Algorithms, Web & Mobile Applications, ECMAScript (ES6), Microsoft Development, Microsoft Word Development, Azure App Service, Desktop App Development, Architecture, Front-end Architecture, Windows Presentation Foundation (WPF), Microsoft Visual Studio, WebSockets, WordPress, WebGL
Software Engineer | Director of Product Development
2004 - 2009
REDCUBICA
- Participated in the design and development of three software applications: a semantic search engine ("R3"), a local search engine for businesses, products, and services ("Ubícame"), and a real estate marketing platform ("Encuentra Inmuebles").
- Raised an investment of about $195,000 to sustain the company's working capital needs.
- Involved in the complete software development lifecycle, including requirements gathering, conceptual design, analysis, detail design, development, and system testing.
- Built the Excel developer tools to create forms and display database info in Excels sheets.
- Developed the web pages and C# code using Visual Studio .NET framework and introduced several user interface prototypes.
- Oversaw the maintenance of source code versions using SVN. Worked extensively with Ding (MVC), server (web and HTML), and data binding controls.
- Organized several sessions with the business team, gathered the business requirements, and developed the detailed functional requirements.
Technologies: ASP.NET, C#.NET, SQL Server DBA, VisualSVN, IIS, .NET, SQL, CSS, HTML, REST APIs, Web MVC, Linux, JavaScript, Front-end, Back-end, Full-stack, C#, HTML5, CSS3, User Experience (UX), User Interface (UI), Libraries, jQuery, Google Cloud, RDBMS, UI Testing, Unit Testing, Entity Framework, Runtime Debugging, Cloud, API Hooking, Agile, Responsive, Microsoft SQL Server, REST, APIs, Full-stack Development, Third-party APIs, Team Leadership, Responsive Web Apps, Ads, Algorithms, Web & Mobile Applications, ECMAScript (ES6), Microsoft Development, Microsoft Word Development, Generative Pre-trained Transformers (GPT), Natural Language Processing (NLP), Azure App Service, Desktop App Development, Architecture, Front-end Architecture, Microsoft Visual Studio, WebSockets, WordPress, WebGL, Scraping
Experience
Archvistic—Document Management Tool
Archvistic is a document database that doesn't feel like a database.
After watching people struggle to manage their business information in Excel as they couldn't afford an enterprise solution, we developed a simple tool to manage files and data in one place. It is the first simple and easy database for everyone, not just experts.
After watching people struggle to manage their business information in Excel as they couldn't afford an enterprise solution, we developed a simple tool to manage files and data in one place. It is the first simple and easy database for everyone, not just experts.
EY Helix—Audit Analytics Platform
https://www.ey.com/en_gl/audit/technology/helixEY Helix is a global audit analytics platform that allows analytics to be embedded into every significant audit aspect.
An analytics-driven approach to audit allows us to provide better quality and deeper insights, perform more client-relevant audits, and exercise a higher level of professional skepticism.
An analytics-driven approach to audit allows us to provide better quality and deeper insights, perform more client-relevant audits, and exercise a higher level of professional skepticism.
Ding—MVC.NET Framework
I developed an MVC.NET framework for desktop and web and its methodology called Ding to produce standard, measurable, and scalable software.
The framework is used in apps for companies such as Sección Amarilla, Advantage, Shell, Pfizer, Shenkin, and Sport City.
The framework is used in apps for companies such as Sección Amarilla, Advantage, Shell, Pfizer, Shenkin, and Sport City.
Customer Centric Virtual Contact Center
https://telegestion.com.mx/An in-house cloud-based business communication platform that allows customer service agents, sales representatives, and other team members to work remotely or in a call center.
Team members can work with each other and with customers across different time zones, locations, and devices within the software’s unified digital interface. This flexibility-focused software has features like real-time data syncing, support ticket notifications, and integrations with other CRM tools allowing agents access to the same information instantly regardless of when and where they’re working.
Team members can work with each other and with customers across different time zones, locations, and devices within the software’s unified digital interface. This flexibility-focused software has features like real-time data syncing, support ticket notifications, and integrations with other CRM tools allowing agents access to the same information instantly regardless of when and where they’re working.
Education
2009 - 2011
Master's Degree in Business Administration with Quality and Productivity
Universidad Tecmilenio - Mexico
2006 - 2009
Engineer's Degree in Software Development Engineering
Universidad Tecmilenio - Mexico
Certifications
JANUARY 2022 - PRESENT
React Certification
Udemy
JANUARY 2021 - PRESENT
20-GDE: Angular Certified Developer
Angular Training
JANUARY 2020 - PRESENT
70-480: Programming in HTML5 with JavaScript and CSS3
Microsoft
JANUARY 2020 - PRESENT
70-483: Programming in C#
Microsoft
JANUARY 2020 - PRESENT
70-761: Querying Data with Transact-SQL
Microsoft
Skills
Libraries/APIs
REST APIs, jQuery UI, Node.js, React, jQuery, Entity Framework, RxJS, NgRx, Flexbox, AG Grid, Highcharts, React Redux, Three.js, WebGL, React Router, Twilio API
Tools
Adobe Experience Design (XD), Microsoft Word Development, Microsoft Visual Studio, ChatGPT, Git, GitHub, Webpack, Azure App Service, Asterisk, VisualSVN, C#.NET WinForms
Languages
TypeScript, JavaScript, C#.NET, SQL, CSS, HTML, C#, CSS3, HTML5, TypeScript 3, ECMAScript (ES6), SCSS, GraphQL, PHP, Python
Frameworks
Angular, ASP.NET, .NET, ASP.NET Core, .NET Core, Material UI, Bootstrap, Express.js, React Native, Next.js, Windows Presentation Foundation (WPF), Redux, Swagger, Jest
Paradigms
Responsive, REST, Continuous Integration (CI), Continuous Development (CD), Desktop App Development, Microservices, Azure DevOps, Unit Testing, DevOps, Agile, Low-code Development, UI Design
Platforms
Visual Studio Code (VS Code), Google Cloud Platform (GCP), Microsoft Development, WordPress, Amazon EC2, AWS Lambda, Azure, Linux, Firebase, Amazon Web Services (AWS), Docker, Ontraport, Twilio
Storage
SQL Server DBA, Amazon DynamoDB, Microsoft SQL Server, MongoDB, Azure SQL, RDBMS, Amazon S3 (AWS S3), MySQL, Google Cloud
Other
Web MVC, Front-end, Back-end, Full-stack, User Experience (UX), User Interface (UI), Runtime Debugging, API Hooking, MERN Stack, APIs, WebSockets, Full-stack Development, Third-party APIs, Team Leadership, Responsive Web Apps, Real-time Bidding (RTB), Ads, Algorithms, Serverless, Architecture, Front-end Architecture, Scraping, SheetJS, IIS, UI Testing, Cloud, CI/CD Pipelines, Amazon API Gateway, Web & Mobile Applications, Natural Language Processing (NLP), Generative Pre-trained Transformers (GPT), Machine Learning, Artificial Intelligence (AI), Large Language Models (LLMs), Prompt Engineering, MBaaS, Libraries, Chromium, Firewalls, Message Queues, OpenAI GPT-4 API, LangChain, Hugging Face, Low Code, Data Visualization, Foundry
Collaboration That Works
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
1
Share your needs
Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2
Choose your talent
Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3
Start your risk-free talent trial
Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.
Top talent is in high demand.
Start hiring