Ahmed is currently unavailable

Ahmed Yarub Hani Al Nuaimi

Verified Expert in Engineering

Systems Architect and Developer

São Paulo - State of São Paulo, Brazil

Toptal member since June 4, 2026

Expertise

Full-stack Back-end Developers Neural Network Startup Development AWS Cloud Payment Processing SQL Linux Java Microservices Development REST API Visual Basic

Bio

Ahmed is a senior systems architect with 22 years of experience engineering enterprise web, mobile, and desktop applications using Java, Go, C++, Node.js, and PHP. Backed by a master's degree in AI, he seamlessly integrates with internal teams to deliver fault-tolerant, global-scale back-end systems as a dedicated independent contractor.

Portfolio

Innovus

Kotlin, PostgreSQL, Crypto, Fintech, Facebook API, WhatsApp...

Rocket Lawyer

Java, Spring, Google Cloud Platform (GCP), Python, Microsoft Copilot...

Uber

Go, Lean Experiments, Project Management, API Integration, gRPC, GitHub...

Experience

Artificial Intelligence (AI) - 12 years
Java - 12 years
Microservices - 12 years
.NET - 10 years
Python - 10 years
Spring - 8 years
C++ - 6 years
Google AI Platform - 2 years

Preferred Environment

Google Antigravity, PyCharm, IntelliJ IDEA, Windows Subsystem for Linux (WSL)

The most amazing...

...things I've done are migrating Zwift's activity feeds, fixing Uber's marketing tools, and implementing a configurable paywall system at Rocket Lawyer.

Work Experience

Senior Software Engineer

2025 - 2026

Innovus

Created a WhatsApp chatbot from the ground up, used for remittance and customer support.
Developed remittance logic using Kotlin, ensuring maximum security and availability.
Integrated https://zensyglobal.com/ with financial institutions for fiat and crypto transfers.

Technologies: Kotlin, PostgreSQL, Crypto, Fintech, Facebook API, WhatsApp, Concurrent Programming, Claude, Startups, Next.js, Infrastructure, Architecture, Security, AWS Cloud Architecture, Authentication, Authorization, Back-end Architecture, Back-end Development, Database Design, Payment Processing, REST APIs, SaaS Architecture, System Architecture, WebSockets, Telemetry, NestJS, Event-driven Architecture, Claude Code, Auth, Cloudflare, RESTFul APIs, ACID, Event-driven Systems, Know Your Customer (KYC), Ledgers, Money Transfers, Payments, QR Codes, Stripe API, Transactions, Kotlin Multiplatform, Linux, Jira, Financial Systems, Cloud Computing, Docker, Containers, Cursor AI, Observability

Senior Software Engineer

2024 - 2026

Rocket Lawyer

Created a unified and configurable checkout system tailored to the user requirements.
Ingested meaningful data points into our data analysis systems via Segment and Iterable.
Integrated the Copilot-based AGUI into the plans and payments ecosystem.

Technologies: Java, Spring, Google Cloud Platform (GCP), Python, Microsoft Copilot, PostgreSQL, Fintech, ACH Payments, Payment APIs, AI Tools, Project Management, API Integration, JavaScript, Full-stack, GitHub, Back-end, APIs, REST APIs, IntelliJ IDEA, PyCharm, Google Antigravity, Google AI Platform, Microservices, SQL, Redis, Functional Reactive Programming, Concurrent Programming, Spring Boot, Agentic AI, AI Agents, Full-stack Development, Claude, Google Cloud, AI Integration, FastAPI, Large Language Models (LLMs), MongoDB, Gemini, OpenAI, Next.js, Infrastructure, Architecture, Security, DevOps, Authentication, Authorization, Back-end Architecture, Back-end Development, Database Design, Payment Processing, SaaS Architecture, System Architecture, Telemetry, Event-driven Architecture, Agentic Frameworks, Claude Code, Model Context Protocol (MCP), Auth, Cloudflare, RESTFul APIs, ACID, Event-driven Systems, Ledgers, Payments, QR Codes, Stripe API, Stripe Connect, Transactions, Kotlin Multiplatform, Linux, Jira, System Integration, Financial Systems, Agentic AI Systems, Agentic Workflow Design, Cloud Computing, Docker, Prompt Engineering, Containers, Cursor AI, Observability

Senior Software Engineer (L5)

2023 - 2024

Uber

Created Go-based microservices for grocery-based promotions (Cornershop).
Contributed to the design and analysis of grocery delivery experiments.
Contributed to advanced features for our zero-code platform.

Technologies: Go, Lean Experiments, Project Management, API Integration, gRPC, GitHub, Back-end, APIs, REST APIs, IntelliJ IDEA, PyCharm, Microservices, SQL, Concurrent Programming, MongoDB, Authentication, Authorization, Back-end Architecture, Back-end Development, Database Design, System Architecture, Telemetry, Event-driven Architecture, RESTFul APIs, ACID, Event-driven Systems, NoSQL, Linux, Jira, Cloud Computing, Docker, Containers, Observability

Senior Software Engineer

2020 - 2023

Zwift

Constructed feeds and provided instant recommendations out of millions of records, utilizing adequate data structures and algorithms.
Developed an events management service using Quarkus and Java 17.
Migrated to Spring Boot microservices from a JBoss/Wildfly monolith.

Technologies: Java, Spring, Quarkus, Amazon Web Services (AWS), PostgreSQL, Kubernetes, Project Management, API Integration, JavaScript, GitHub, Back-end, APIs, REST APIs, IntelliJ IDEA, PyCharm, Microservices, SQL, Redis, Functional Reactive Programming, Concurrent Programming, Spring Boot, Full-stack Development, Startups, Infrastructure, Architecture, AWS Cloud Architecture, Authentication, Authorization, Back-end Architecture, Back-end Development, Database Design, SaaS Architecture, System Architecture, Telemetry, Amazon Kinesis, Apache Kafka, Event-driven Architecture, Auth, RESTFul APIs, ACID, Event-driven Systems, Kotlin Multiplatform, Linux, Jira, System Integration, Cloud Computing, Docker, Containers, Observability

Senior Software Engineer

2018 - 2020

M4U Solutions

Developed mobile phone credit APIs with millions of clients in Java/Spring.
Created microservices with predictive algorithms in Java 11 and Spring Boot 2.
Performed mobile plan conversion data analysis in R and various Python libraries.

Technologies: Java, Spring, Amazon Web Services (AWS), Python, XGBoost, PostgreSQL, SQL Server, R, Fintech, ACH Payments, Payment APIs, AI Tools, Project Management, API Integration, GitHub, Back-end, APIs, REST APIs, IntelliJ IDEA, PyCharm, Microservices, SQL, Jupyter, Redis, Functional Reactive Programming, Concurrent Programming, Spring Boot, Microsoft SQL Server, TypeScript, Infrastructure, Architecture, Security, DevOps, AWS Cloud Architecture, Authentication, Authorization, Back-end Architecture, Back-end Development, Database Design, Payment Processing, System Architecture, Telemetry, Amazon Kinesis, Apache Kafka, RedPanda, Event-driven Architecture, Auth, RESTFul APIs, ACID, Event-driven Systems, Know Your Customer (KYC), Ledgers, Money Transfers, Payments, QR Codes, Stripe API, Transactions, Kotlin Multiplatform, Linux, Jira, Financial Systems, Cloud Computing, Docker, Containers, Observability

Freelance Research Assistant

2015 - 2019

Al Ain University

Wrote journal and conference papers related to AI research.
Created desktop and web applications using C# .NET, C++, and PHP/Laravel.
Integrated hardware with the Nao Robot and 3D joysticks.

Technologies: C++, C#, Artificial Intelligence (AI), Neural Networks, Research, Robotics, Blockchain, Web App Design, PHP, Laravel, Raspberry Pi, Arduino, Concurrent Programming, NVIDIA CUDA, Computer Vision, OpenCV, Azure, Angular, Full-stack Development, AI Integration, TypeScript, Database Design, Internet of Things (IoT), WebSockets, Real-time Data, Telemetry, Real-time Streaming, Real-time Systems, React, Auth, DigitalOcean, RESTFul APIs, NoSQL, Kotlin Multiplatform Mobile (KMM), Linux, .NET Core, Docker, Containers

Senior Software Engineer

2016 - 2018

Veus Technology

Developed Human Information Systems for various hospitals using PHP, the Laravel framework, and MySQL.
Created an accompanying patient application used to track medical tests.
Integrated hardware with medical machines to automate the retrieval of lab results.

Technologies: JavaScript, PHP, Python, Laravel, API Integration, Full-stack, gRPC, GitHub, CSS, HTML, HL7, Back-end, Fast Healthcare Interoperability Resources (FHIR), APIs, REST APIs, SQL, Redis, MySQL, Ionic, Angular, C++, Node.js, Concurrent Programming, Full-stack Development, Authentication, Authorization, Back-end Architecture, Back-end Development, Database Design, System Architecture, WebSockets, Real-time Data, Medical Devices, Java Native Interface (JNI), Real-time Streaming, Real-time Systems, DigitalOcean, RESTFul APIs, ACID, Linux, Jira, Cloud Computing, Docker, Containers, Observability

Programmer

2014 - 2016

Pride Global

Installed, administered, and developed SharePoint modules.
Implemented online collaboration systems using .NET MVC, jQuery, and SQL Server.
Implemented eCommerce websites using Magento, PHP, JavaScript, and MySQL.

Technologies: .NET, C#, PHP, Magento, SQL Server, SharePoint, MySQL, Node.js, Concurrent Programming, .NET 8, Microsoft SQL Server, Angular, Full-stack Development, TypeScript, Back-end Architecture, Back-end Development, Database Design, REST APIs, System Architecture, RESTFul APIs, ACID, Linux, System Integration, Logistics, Transportation & Logistics, Observability

Part-time Mobile Games Developer

2012 - 2014

Natural Style

Developed simple Java games using the Cocos2d-x framework.
Developed, migrated, and tested multiple Android games.
Developed, migrated, and tested multiple iOS games.

Technologies: Java, Cocos2d-x, iOS, Android, Java Native Interface (JNI)

Part-time Software Developer

2012 - 2014

Riken research institute

Created auxiliary applications for the cognition lab.
Implemented desktop applications that interfaced with medical devices using C# and .NET.
Developed rehabilitation software that integrated with 3D controllers in C++.

Technologies: Hardware Plugins, .NET, Desktop, C#, Artificial Intelligence (AI), C++, Node.js, NVIDIA CUDA, Computer Vision, OpenCV, Full-stack Development, Internet of Things (IoT), Real-time Data, Medical Devices, Java Native Interface (JNI), Real-time Streaming, Real-time Systems, Linux

Part-time Web Designer

2012 - 2013

Tensei Datanet

Designed websites from scratch according to client requirements.
Created dynamic content using PHP, JavaScript, CGI, and ASP.
Developed front-end functionality using HTML, CSS, and JavaScript.

Technologies: PHP, JavaScript, CGI, ASP.NET, Modern JavaScript, CSS, HTML

System Engineer

2010 - 2011

RAK Precast LLC

Maintained existing ERP software implemented in Visual Basic 6.
Created new ERP software features for managing large engineering teams in Visual Basic 6.
Administered on-premises Microsoft SQL Server databases.

Technologies: Visual Basic, SQL Server, Microsoft SQL Server, Full-stack Development, Autodesk, AutoCAD, Database Design, Ledgers, ERP Systems, System Integration, Logistics, Transportation & Logistics

Senior IT Officer/Software Developer

2007 - 2010

Prism/Althuraya/Coeval Group of Companies

Developed various software solutions to automate existing processes and enable tasks that were not feasible without custom software.
Developed and maintained the full IT infrastructure for a group of companies across both software and hardware environments.
Resolved a wide range of IT-related issues and provided computer operations training to company staff.

Technologies: Visual Basic, C#, .NET, SQL Server, .NET 8, Microsoft SQL Server, Full-stack Development, Autodesk, AutoCAD, Database Design, Ledgers, ERP Systems, System Integration, Logistics, Transportation & Logistics

Software Developer

2003 - 2007

Al Katteb Software Company

Developed simple edutainment software in Visual Basic 6.
Developed database applications using C# and Microsoft SQL Server.
Prepared presentations and managed negotiations with prospective clients.

Technologies: Visual Basic 6 (VB6), C#, .NET, SQL Server

Experience

Snap Solve

https://github.com/ahmedyarub/SnapSolve/

A personal assistant that reads the screen, listens to conversations, and accepts text. It uses this information to interact with multiple large language models (LLMs)s to obtain answers and generate code. It also has an Android companion application.

Airtickets Laravel Web App

https://github.com/ahmedyarub/airtickets-webapp

A complete web application that integrates with Python scripts used for scraping air-ticket prices that can be purchased using points or miles. The system has multiple admin and user levels, allowing search, commissions, and sales.

API Guard

https://github.com/ahmedyarub/api_guard

A cross-domain static analysis for Java microservices. API Guard discovers REST endpoints and client calls across Spring Boot services, links them into a dependency graph, and enables CodeQL to analyze vulnerabilities that span service boundaries.

Cloud Companion

Instead of giving users error messages that force them to keep on looking around for solutions, the tool analyzes both local and remote configurations. It proposes solutions relevant to users' configurations. All of this is done within the same user interface, in an application that works on every single platform. This gives users some unique powers, like automatically configuring their development machine and retrieving code from remote repositories, building it, and deploying it all from a single place.

Epic FHIR Integration

https://github.com/ahmedyarub/epic_demos

I integrated with FHIR APIs using SMART on FHIR as part of a proof of concept for health information systems clients seeking to integrate with Epic as a back-end service. I also created separate versions for patients and healthcare providers.

Redub

https://github.com/ahmedyarub/Redub/

An automated desktop application that replaces video narration with high-quality, natural-sounding AI neural voices. The toolkit recursively walks through video folders, transcribes or translates the audio, applies pitch-locked time-stretching to prevent audio overlap, and embeds toggleable soft subtitles inside the final MP4 container.

Education

2011 - 2014

Master's Degree in Computer Engineering and Artificial Intelligence

University of Fukui - Fukui, Japan

2003 - 2009

Bachelor's Degree in Computer Engineering

University of Ittihad - United Arab Emirates

Certifications

APRIL 2009 - PRESENT

Oracle PL/SQL Developer Certified Associate

Oracle

JANUARY 2009 - PRESENT

Microsoft Certified Professional

Microsoft

Skills

Libraries/APIs

Node.js, React, REST APIs, Auth, OpenCV, Stripe API, Stripe Connect, Facebook API, XGBoost, Claude API

Tools

CMake, PyCharm, IntelliJ IDEA, GitHub, Claude, Jupyter, Google AI Platform, Microsoft Copilot, Autodesk, Claude Code, Jira, SMART on FHIR, AutoCAD, Whisper

Languages

Java, SQL, PHP, Python, JavaScript, C#, Visual Basic, Visual Basic 6 (VB6), TypeScript, C++, Go, HTML, Modern JavaScript, Kotlin, R, CSS

Frameworks

.NET, Spring, Laravel, Angular, ASP.NET, Spring Boot, .NET 8, Next.js, Laravel 11, gRPC, Qt, Ionic, Agentic Frameworks, .NET Core, Cocos2d-x, NestJS

Paradigms

Microservices, Cross-platform, Back-end Architecture, Database Design, Event-driven Architecture, ACID, Concurrent Programming, Functional Reactive Programming, Fast Healthcare Interoperability Resources (FHIR), DevOps, Real-time Systems, Model Context Protocol (MCP), HL7 FHIR Standard, Web App Design

Platforms

Desktop, Apache Kafka, Linux, Docker, Amazon Web Services (AWS), Raspberry Pi, Arduino, Google Cloud Platform (GCP), Kubernetes, Ollama, Android, JavaFX, NVIDIA CUDA, Azure, Oracle, Magento, SharePoint, iOS, Blockchain, Vercel, DigitalOcean

Storage

PostgreSQL, MySQL, Redis, Microsoft SQL Server, Google Cloud, MongoDB, NoSQL

Industry Expertise

Project Management

Other

Computer Engineering, FastAPI, Desktop App, SQL Server, Lean Experiments, API Integration, Full-stack, Back-end, APIs, Neural Networks, Full-stack Development, Startups, Infrastructure, Architecture, Security, AWS Cloud Architecture, Authentication, Authorization, Back-end Development, Payment Processing, SaaS Architecture, System Architecture, Telemetry, RESTFul APIs, Event-driven Systems, Transactions, ERP Systems, System Integration, Cloud Computing, Containers, Artificial Intelligence (AI), Quarkus, Fintech, ACH Payments, Payment APIs, AI Tools, Optical Character Recognition (OCR), Speech-to-Text (STT), Speech Recognition, LLM Integration, Multimodal GenAI, Research, Computer Vision, Agentic AI, AI Agents, AI Integration, Large Language Models (LLMs), Gemini, OpenAI, Internet of Things (IoT), WebSockets, Real-time Data, Medical Devices, Java Native Interface (JNI), Real-time Streaming, Amazon Kinesis, Know Your Customer (KYC), Ledgers, Money Transfers, Payments, QR Codes, Kotlin Multiplatform, Financial Systems, Logistics, Transportation & Logistics, Agentic AI Systems, Agentic Workflow Design, Prompt Engineering, Cursor AI, Observability, Google Antigravity, Windows Subsystem for Linux (WSL), HL7, Epic, CGI, Hardware Plugins, Crypto, WhatsApp, Robotics, RedPanda, Cloudflare, Kotlin Multiplatform Mobile (KMM)

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