Publication
How to Build a React Native QR Scanner: An RNCamera Tutorial
https://www.toptal.com/developers/react-native/react-native-camera-tutorial
Bassam is available for hire
Hire BassamBassam Seif
Verified Expert in Engineering
AI Solutions Architect and Full-stack Developer
Jounieh, Mount Lebanon Governorate, Lebanon
Toptal member since November 8, 2017
Bio
Bassam is a software architect and engineer with 25+ years of experience specializing in highly scalable full-stack applications and production-grade AI systems. He bridges complex system design with cutting-edge AI orchestration, specializing in building durable agent runtimes and cost-optimized LLM pipelines. A fast learner and strict advocate for test-driven development, Bassam focuses on delivering rapid, provable ROI through clean, safe, and resilient code architectures.
Portfolio
Independent Contract Work
C#, Unity, PHP, Three.js, ECMAScript (ES6), MySQL, MongoDB, Meteor, Express.js...
mlxar GmbH d.b.a. Atlas
Python, Vue, APIs, Front-end, Artificial Intelligence (AI)...
Quantpad AI
LangGraph, LangChain, Agentic Frameworks, AI Agents, TypeScript, Next.js...
Experience
- Linux - 20 years
- JavaScript - 13 years
- React Native - 7 years
- Vue - 6 years
- Agentic AI Systems - 3 years
- AI-assisted Development - 3 years
- Large Language Models (LLMs) - 3 years
- Claude Code - 1 year
Preferred Environment
Linux, MacOS, Claude Code, Large Language Models (LLMs), AI-assisted Development
The most amazing...
...invention I've created is a real-time music composer based on human movement.
Work Experience
Software Architect | Engineer (AI & Systems Optimization)
2011 - PRESENT
Independent Contract Work
- Designed scalable software architectures and technical blueprints for high-throughput platforms, specializing in large language model (LLM) integration, multi-agent runtimes, and distributed system environments.
- Developed robust, highly optimized core modules, custom RAG middleware, and unified tool-calling frameworks built to be securely reused across multiple scaling products.
- Transitioned from idea-driven development to test-driven development to achieve maintainable, flexible, and easily extensible code.
- Spearheaded the transition to test-driven development (TDD) and automated evaluation layers, ensuring dynamic AI agent behaviors remain highly reliable, deterministic, and easily maintainable.
- Communicated and led engineering initiatives using agile scrum methodology, executing rapid two-week development iterations to keep complex, multi-modal systems continuously shippable.
- Designed high-performance, modular user interfaces tailored for complex developer dashboards, real-time node-graph canvases, and dynamic data visualization tools.
Technologies: C#, Unity, PHP, Three.js, ECMAScript (ES6), MySQL, MongoDB, Meteor, Express.js, Node.js, React Native, Vue, React, JavaScript, Unit Testing, Python, API Integration, GraphQL, WebRTC, Startups, User Experience (UX), User Interface (UI), Testing, Serverless Architecture, Docker, PostgreSQL, Serverless, Graph Databases, Multiexperience Development Platforms (MXDP), n8n, OpenAI, FastAPI, Flutter, LangChain, ChatGPT, REST APIs, Artificial Intelligence (AI), React Query, UI Testing, Vite, Distributed Architecture, NestJS, Analytics, Geofencing, Playwright, .NET, Azure, Webhooks, Cursor AI, Claude, Azure Functions, System Design, Zustand, Application State Management, Storybook, Role-based Access Control (RBAC), Security, Document Storage, Hosting, Optical Character Recognition (OCR), Model Context Protocol (MCP), Android Watch, AI Tools, DevOps, Machine Learning, Retrieval-augmented Generation (RAG), Model View Presenter (MVP), CTO, Software Architecture, Enterprise Architecture, HTML5, Mapbox, Data Visualization, LangGraph, Agentic AI, Dashboards, E2E Testing, Shadcn, Gemini API, Vector Databases, Orchestration, Stripe, Claude Code, AI-assisted Development, Software Engineering, Codex, Kubernetes, API Management, Linux, Agentic AI Systems, Large Language Models (LLMs), Agentic Coding, Supabase, Product Planning, AI Automation
Full-stack Engineer
2026 - 2026
mlxar GmbH d.b.a. Atlas
- Engineered a high-performance visual node canvas for AI pipeline orchestration, scaling a laggy legacy setup to support unlimited generative model chains without failure.
- Migrated the repository to Tailwind CSS, creating a standardized component library explicitly optimized for multi-model agentic playgrounds and parameter tracking dashboards.
- Standardized complex front-end modules for the platform's multi-modal AI workspace, accelerating the feature delivery of text-to-asset pipelines for game studios.
- Architected a high-throughput consumption billing engine across GCP and Stripe to track real-time token spend, execution rounds, and generative credit balances.
- Resolved transaction edge cases for scaling enterprise clients upgrading their generative tiers, securing high-volume compute allocation flows with zero downtime.
- Multiplied feature ship speed by embedding cutting-edge AI coding tools into the workflow while building automated E2E suites to validate dynamic, AI-generated UI states.
Technologies: Python, Vue, APIs, Front-end, Artificial Intelligence (AI), Back-end Development, Full-stack Development, AI-assisted Development, Software Engineering, Kubernetes, Linux, Agentic AI Systems, Large Language Models (LLMs), Agentic Coding, Product Planning, AI Automation
AI Agent Developer
2026 - 2026
Quantpad AI
- Architected a durable agent runtime using LangGraph, successfully migrating a legacy RAG pipeline and improving system response accuracy.
- Implemented multi-round tool-calling for OpenAI, Anthropic, and Gemini, optimizing token caching to reduce LLM API costs.
- Built a granular usage tracking system to monitor token spend and execution costs per round, reducing project budget overruns.
- Built an agentic workspace versioning system that allows users to move back and forth between versions and fork separate histories when needed.
Technologies: LangGraph, LangChain, Agentic Frameworks, AI Agents, TypeScript, Next.js, Gemini, Anthropic, Agentic AI, Prompt Engineering, React, OpenAI, Python, Claude Code, Claude, Orchestration, AI-assisted Development, Software Engineering, API Management, Linux, Agentic AI Systems, Large Language Models (LLMs), PostgreSQL, Agentic Coding, Supabase, Product Planning, AI Automation
React Native Developer
2023 - 2026
Carrier Global
- Streamlined Carrier's core app with DRY techniques, enhancing maintainability and cutting code volume by up to 80%.
- Analyzed 1,000+ reviews, driving immediate, score-based improvements to store rating.
- Oversaw 100+ design revisions, aligning with designers to fit the latest tech stack, amplifying project momentum.
- Increased automated test coverage to 90% of the service codebase to ensure higher reliability.
Technologies: React, React Native, JavaScript, GraphQL, CSS, Node.js, Docker Compose, React Native for Web, Architecture, Nx, Tailwind CSS, TypeScript, Large Language Models (LLMs), Apollo, MobX, ChatGPT, REST APIs, Artificial Intelligence (AI), React Query, UI Testing, Distributed Architecture, Geofencing, Analytics, Webhooks, Cursor AI, Claude, System Design, Application State Management, Storybook, DevOps, Model View Presenter (MVP), Software Architecture, Enterprise Architecture, HTML5, Mapbox, Data Visualization, Dashboards, E2E Testing, Claude Code, AI-assisted Development
Mobile Web Developer (Independent Contractor)
2017 - 2019
Freelancing Website
- Transitioned this freelance agency's mobile web app to a component-based architecture in Angular.
- Created unit tests for all the newly created components, keeping 100% code coverage.
- Updated the PHP legacy code to support new features.
- Attended daily scrum meetings and helped with the creation of new tasks.
- Created an automatically generated component library consisting of all the reusable components with their demo, code examples, and documentation.
Technologies: Mocha, Webpack, PHP, Vue, Angular, Unit Testing, Tailwind CSS, SQL, SEO Tools, API Integration, User Experience (UX), User Interface (UI), Game Development, REST APIs, Security, Hosting, DevOps, Dashboards, API Management
Platform Evangelist
2013 - 2014
Microsoft
- Assisted students in developing apps for Windows Phone and Windows 8, supported by Windows Azure.
- Created boilerplate code for students to reuse in their applications.
- Delivered presentations to more than 200 monthly students.
- Organized regular meetings and presentations with Microsoft employees and student partners.
- Implemented Kactus (a previous startup) on Windows Phone and Windows 8.
Technologies: Visual Studio, C#, Windows Phone, Azure Functions, Dashboards
Co-founder
2012 - 2014
Kactus
- Led a multidisciplinary team from concept to execution.
- Started off with a web-based Angular application backed by Node.js and MongoDB.
- Created an iOS native app which reached the number-one spot in the Lebanese App Store with more than 2,000 daily downloads.
- Assisted designers in the creation of the UI/UX of the application and the personas.
- Presented Kactus to investors, TV shows, and radio stations.
Technologies: Objective-C, CouchDB, Node.js, Angular, System Design, CTO
Experience
Clyx
I led a team of front-end and back-end developers to create a cross-platform social app for meetings and events that makes it easier and faster for users to do the things they love with the people who matter most.
Only One
An Angular-based platform that helps protect the ocean, tackle the climate crisis, and build a more just, equitable planet. It has different articles, videos, petitions, and memberships centered around ocean conservation.
AvoMD
https://www.avomd.com/A React-based cross-platform medical application built in a dynamic way to allow the owners to set it up according to the varying diagnostics of doctors.
The involvement was to transition the app into a cross-platform codebase.
The involvement was to transition the app into a cross-platform codebase.
Abiomed Learning Management System (LMS)
A React Native cross-platform app that helps manage and use a platform for cardiologists. Helped maintain the back end in Rails connected to React Native using seamless web views in some cases. Multiple updates were made on the React Native front, behind feature flags, to keep the user experience intact for most of the users.
Crypto Exchange Wallet (Vybera)
A React-and-React-Native-based crypto wallet app with an extensive service layer. The service layer enables support for the exchanges between most of the crypto currencies throughout different platforms. The app is non-custodial and is built with a high level of security in order to protect the user.
Angl Design
http://angl.design/A Unity-based 3D one-stop solution for architecture, design, and engineering buildings online. The app allows different specialists to connect and seamlessly sync their designs.
Technologies: Unity, Node.js, and Angular
Technologies: Unity, Node.js, and Angular
Screencastify
https://www.screencastify.com/The project consists of a web-based screen recorder built on top of Angular and Firebase. Implemented tests and REST APIs and the conversion of mockups to UI components.
Technologies: Angular, Firebase
Technologies: Angular, Firebase
MZN
A mobile-first online website builder is similar to Squarespace/WIX written in Vue.js/PHP.
Technologies: Vue.js, PHP, AWS, Vuex, Docker
Technologies: Vue.js, PHP, AWS, Vuex, Docker
React Native 3D Cube
https://github.com/zehfernandes/react-native-3dcube-navigationContributed to react-native-3dcube-navigation as it was a dependency of an implementation, this led to contributing to the open-source repository listed in the link.
Technologies: React Native, Redux
Technologies: React Native, Redux
Next Level Online
A React-based webinar management software (back end/front end) that allows users to register and pay for different webinars and check their specific details including the people who have registered and the instructor information.
Technologies: React, Firebase, Amazon Web Services (AWS), Stripe
Technologies: React, Firebase, Amazon Web Services (AWS), Stripe
Air Camera
This project was developed using React Native in order to have a single codebase for multiple platforms and a snappy UX. We used Redux to make sure the state mutations happened as smoothly as possible with the UI.
Technologies: React Native, Redux
Technologies: React Native, Redux
TIGO Home Activator
https://activador.tigo.com.svThe platform allows users to find internet services in their areas, buy them, and book appointments to simplify the activation procedure.
Technologies: Node.js, Mithril.js
Technologies: Node.js, Mithril.js
Wireless Analytics
A Vue.js-based point-of-sale front-end that enables its users to create, configure, and sell network operator bundles according to a set of configurable rules.
Technologies: Vue.js, Webpack, Node.js, Boostrap
Technologies: Vue.js, Webpack, Node.js, Boostrap
Small Prayer
A React Native app that helps people create groups and send small prayers to each other taking advantage of Firebase on the back end.
Technologies: React Native/Firebase
Technologies: React Native/Firebase
Healint Component Library
On this project, a robust component library packed with an extensible theme that propagates across all the elements was created. A component demo was also added so that the components are showcased and their code can be easily copied.
Technologies: JavaScript, Vue.js, ES6
Technologies: JavaScript, Vue.js, ES6
Dermalogica Face Map
This React-based product uses facial recognition to determine the quality of the skin of the user and give recommendations to improve his skin based on many computed parameters.
Technologies: React, Node.js, PHP
Technologies: React, Node.js, PHP
Employee Satisfaction Chrome Extension
A Chrome extension that fires up at random times during the day to measure daily employee satisfaction. The data is then sent to a server that crunches the numbers.
Technologies: Chrome Extension, JavaScript
Technologies: Chrome Extension, JavaScript
Freelancing Website (Confidential Name)
The project consists of multiple different sections:
• A single-page application written with Ionic which is aimed for all mobile phones/tablets.
• An Angular responsive app backed with PHP.
The main task of this project was multifaceted frameworks/languages in order to implement/fix the required features.
References or live demo available upon request.
• A single-page application written with Ionic which is aimed for all mobile phones/tablets.
• An Angular responsive app backed with PHP.
The main task of this project was multifaceted frameworks/languages in order to implement/fix the required features.
References or live demo available upon request.
Space Chicken Saga
A Unity3D adventure game set in space that pivots around helping a chicken make it through space using real-time physics elements.
Kactus
http://kactus.bassamseif.com/Kactus is a mobile application that provides users with thousands of community generated to-do lists that would break down complex procedures into simple tasks.
Beatball
A 3D-platform game (built with Unity) consisting of multiple acts containing new skills, powerups, tutorials, and enemies. The development was led by a team of four (a designer, a composer, a QA, and a level designer). The game was programmed using C# and is available for iOS and Android.
Barcode Queue
The project consists of two parts: a server and a scanner.
• Server: A Node.js server using Meteor.
• Scanner: A React Native app to help people get into a queue using a QR and the device's camera.
This is a white-labeled product which was rebranded by the clients.
• Server: A Node.js server using Meteor.
• Scanner: A React Native app to help people get into a queue using a QR and the device's camera.
This is a white-labeled product which was rebranded by the clients.
Remote Gate Opener
A remote gate opener built using PhoneGap. It takes commands from the user and uses an API to open up gates controlled by a custom-built RPI.
Urban Eights
Urban Eights is a minimum viable product (MVP) for a client that needed a fully functional Tinder clone for shopping. The mobile app is written using React Native.
Blinksys
This is software that translates human blinks into a set of commands for hospital patients and links them to a web interface. C++ was used to detect the blinks, send the data to the server, and then used AngularJS to display the information.
Movement-controlled Smart Music Composer
This interface integrates different sensors onto an application which reads the movements and creates harmonious music out of the information.
Ignite ERP
Led a team of five over five years to develop a fully-fledged ERP solution for manufacturing companies. The ERP contains many departments, including production, sales, purchasing, human resources, and administration. Each department has multiple roles as well (e.g., Production Engineer, Production Manager, Production QA, etc.).
Education
2014 - 2015
Master's Degree (MBA) in Business Administration
IE Business School - Madrid, Spain
2006 - 2011
Bachelor of Engineering Degree in Computer and Communications Engineering
Lebanese American University - Beirut, Lebanon
Skills
Libraries/APIs
React, Vue, Node.js, Google Maps, REST APIs, React Query, Stripe, WebRTC, MobX, Playwright, jQuery, Facebook API, Three.js, Redux-Saga, React Native for Web
Tools
Mongoose, Figma, n8n, ChatGPT, Claude, Shadcn, Claude Code, Jira, Sublime Text, Git, Visual Studio, Webpack, Mocha, Adobe Illustrator, Adobe Photoshop, Redux Thunk, Expo, Apple Vision Pro, Docker Compose, Nx, Codex
Languages
JavaScript, ECMAScript (ES6), HTML5, TypeScript, CSS, HTML, Objective-C, SQL, C#, PHP, Python, GraphQL, Java, Sass, Semantic HTML, Ruby
Frameworks
React Native, Angular, Unity, Redux, NestJS, Angular Material, Tailwind CSS, LangGraph, Bootstrap 3+, Jest, Nuxt.js, Next.js, Cypress, Flutter, .NET, Agentic Frameworks, Mithril.js, Express.js, ASP.NET MVC, Bootstrap, Ruby on Rails (RoR)
Paradigms
Microservices, Unit Testing, Continuous Integration (CI), Mobile Development, Role-based Access Control (RBAC), Hosting, DevOps, Model View Presenter (MVP), E2E Testing, Scrum, Test-driven Development (TDD), Agile Software Development, Testing, Model Context Protocol (MCP), REST, Responsive Development, Event-driven Programming, UI Design, UX Design, Object-oriented Programming (OOP), Waterfall Development, Serverless Architecture
Platforms
iOS, Firebase, Docker, Contentful, Linux, Amazon Web Services (AWS), Android, Google Cloud Platform (GCP), Azure, Azure Functions, Mapbox, Kubernetes, MacOS, Windows Phone, Meteor, Blockchain, Mobile, Multiexperience Development Platforms (MXDP), Android Watch
Storage
MongoDB, Cloud Firestore, NoSQL, CouchDB, PostgreSQL, MySQL, Graph Databases
Other
Front-end, Back-end Development, Minimum Viable Product (MVP), Web Development, APIs, A/B Testing, Full-stack, SaaS, Full-stack Development, Technical Leadership, Front-end Development, Mobile App Development, Architecture, MERN Stack, API Integration, Leadership, Software Design, Startups, User Experience (UX), User Interface (UI), Cross-platform App Development, Game Development, Large Language Models (LLMs), OpenAI, Artificial Intelligence (AI), Vite, Headless CMS, Analytics, Team Leadership, Webhooks, Cursor AI, System Design, Application State Management, Security, CTO, Agentic AI, Dashboards, AI Agents, Prompt Engineering, AI-assisted Development, Software Engineering, API Management, Agentic AI Systems, Agentic Coding, Product Planning, AI Automation, Angular Component Architecture, Customer Relationship Management (CRM), CI/CD Pipelines, Mobile UI, Mobile UX, SEO Tools, Chrome Extensions, Cloud Platforms, Back-end, Apollo, LangChain, UI Testing, Distributed Architecture, Geofencing, Zustand, Storybook, Document Storage, AI Tools, Machine Learning, Retrieval-augmented Generation (RAG), Software Architecture, Enterprise Architecture, Data Visualization, Gemini API, Orchestration, Gemini, Supabase, Physics Simulations, Computer Vision, Natural Language Processing (NLP), Ajax, Serverless, Generative Pre-trained Transformers (GPT), Express Scribe, Facebook Games, FastAPI, Optical Character Recognition (OCR), Vector Databases, Anthropic
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