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
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-webappA 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_guardA 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_demosI 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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