Jhonny is currently unavailable
Jhonny Khadra
Verified Expert in Engineering
Symfony Back-end Developer
Montreal, QC, Canada
Toptal member since November 15, 2022
Bio
Jhonny is a seasoned senior software engineer and solution architect with expertise in PHP, Symfony, and front-end frameworks like React and Angular. He has worked with SimpleTire, INCENT Corporate Services, and Fify Online Services, developing APIs and reusable code and leading technical migrations. With a master's degree in software engineering from Antonine University, Jhonny excels in CI/CD practices, blockchain technology, and technical leadership.
Portfolio
Valnet
PHP, Gpt-5, AI Agents, Redis, Redis Cache, Manticore Search, Vector Data...
SimpleTire, LLC
PHP 7, PHP, Symfony, Laravel, Design Patterns, Unit Testing, Stripe, HTML5...
INCENT Corporate Services GmbH
Symfony 2, Symfony 6, PHP, PHP 5, PHP 8, Vue, MySQL, MongoDB, Design Patterns...
Experience
- MySQL - 9 years
- Back-end - 9 years
- PHP - 9 years
- Symfony - 9 years
- Databases - 9 years
- Bitbucket - 6 years
- Ubuntu - 4 years
- Docker - 2 years
Work Experience
Tech Lead - PHP Ecosystem
2025 - PRESENT
Valnet
- Developed an AI agent for internal and external use, utilizing multiple LLM models.
- Led the technical direction of a codebase powering 40+ high-traffic content websites and the CMS platform behind them.
- Designed and implemented scalable system architectures ensuring performance, reliability, and extensibility across multiple brands.
Technologies: PHP, Gpt-5, AI Agents, Redis, Redis Cache, Manticore Search, Vector Data, Embedding Models, Payment APIs, ChatGPT API, OpenAI API, Git, Large Language Models (LLMs), Claude Code, Technical Leadership, Full-stack Development
PHP/Laravel Expert
2023 - 2024
SimpleTire, LLC
- Spearheaded the technical design and development of APIs using Symfony and PHP, significantly enhancing system efficiency.
- Led the migration of legacy code from CakePHP to Symfony 6, incorporating best technological practices and improving maintainability.
- Authored comprehensive documentation for system reworks, facilitating clear understanding and seamless implementation of new features.
- Integrated multiple payment gateways, including Stripe and Synchrony.
- Worked on Amazon and Walmart marketplace integrations.
Technologies: PHP 7, PHP, Symfony, Laravel, Design Patterns, Unit Testing, Stripe, HTML5, CSS3, PostgreSQL, SQL, JavaScript, Full-stack, HTML, CSS, eCommerce, RabbitMQ, Scraping, Web Crawlers, CI/CD Pipelines, Chart.js, Amazon Web Services (AWS), Architecture, System Architecture, System Architecture Design, Software Design, MariaDB, Scrum, Ubuntu, PHP 8, MongoDB, Third-party APIs, Third-party Integration, Payment APIs, Git, Technical Leadership, Full-stack Development
Senior PHP Developer
2022 - 2023
INCENT Corporate Services GmbH
- Reviewed and troubleshot code to validate structures and clean code.
- Wrote documentation for the rework and new requirements on software best practices.
- Reworked the old company code to move from Symfony 2 to Symfony 6 while implementing the latest technology best practices.
Technologies: Symfony 2, Symfony 6, PHP, PHP 5, PHP 8, Vue, MySQL, MongoDB, Design Patterns, Unit Testing, PHP 7, Payment Gateways, HTML5, CSS3, PostgreSQL, SQL, TypeScript, JavaScript, Full-stack, HTML, CSS, eCommerce, RabbitMQ, Node.js, Scraping, CI/CD Pipelines, Chart.js, Amazon Web Services (AWS), Architecture, System Architecture, System Architecture Design, Software Design, MariaDB, Scrum, Ubuntu, Third-party APIs, Third-party Integration, Git, Full-stack Development
Senior PHP and Web Developer
2022 - 2022
YieldMonitor
- Worked with blockchain technology, created code interacting with the blockchain nodes to get data, and processed it.
- Reviewed code to validate structures, assess security, and verify browser, device, and operating system compatibility.
- Wrote documentation for new requirements and reworks.
- Integrated it with a BitPay crypto payment and handled all required payment and account validity.
- Created a set of APIs with documentation for business-to-business (B2B) integration while handling customized data based on an API key.
Technologies: Bitbucket, MySQL, PHP, Databases, Blockchain, Symfony, API Integration, REST APIs, Back-end, Data Structures, Object-oriented Programming (OOP), Linux, APIs, JavaScript, Full-stack, Software Architecture, React, Design Patterns, Unit Testing, PHP 7, Payment Gateways, HTML5, Web Scraping, CSS3, Python, PostgreSQL, SQL, TypeScript, HTML, CSS, RabbitMQ, Node.js, Scraping, CI/CD Pipelines, Chart.js, Amazon Web Services (AWS), Architecture, System Architecture, System Architecture Design, Software Design, MariaDB, Scrum, Ubuntu, Amazon Simple Queue Service (SQS), PHP 8, MongoDB, Apache, Third-party APIs, Third-party Integration, Payment APIs, Git, Full-stack Development
Senior Web Developer
2022 - 2022
Fify
- Worked on multiple projects using Symfony 6 to deliver fully-functional APIs and back-end functionality.
- Tracked and fixed bugs in ongoing projects using GitHub Issues.
- Reviewed junior developers' code to maintain a high level of code structure.
- Worked on a migration script to move data from an old project to a new one.
Technologies: Bitbucket, Docker, MySQL, Symfony, Elasticsearch, API Integration, REST APIs, Back-end, Data Structures, Object-oriented Programming (OOP), Linux, APIs, Web Forms, JavaScript, Full-stack, Google Maps, Google Geocoding API, Geocoder, Software Architecture, Design Patterns, Unit Testing, PHP 7, Payment Gateways, HTML5, Web Scraping, CSS3, PostgreSQL, SQL, HTML, CSS, RabbitMQ, Node.js, Scraping, CI/CD Pipelines, Chart.js, Amazon Web Services (AWS), Architecture, System Architecture, System Architecture Design, Software Design, Scrum, Ubuntu, Amazon Simple Queue Service (SQS), Apache, Third-party APIs, Third-party Integration, Git, Full-stack Development
Senior Web Developer | Team Lead
2020 - 2022
Choueiri Group
- Built powerful content management systems to serve as an interface for clients using Symfony, PHP, and Vue.
- Created a CI/CD using Docker, Bitbucket Pipelines, and Kubernetes.
- Reviewed code to validate structures, assess security, and verify browser, device, and operating system compatibility.
- Turned product requirements into technical documentation.
Technologies: Symfony, Databases, MySQL, RabbitMQ, Elasticsearch, Jira, Bitbucket, Docker, Vue, API Integration, REST APIs, Back-end, Data Structures, Object-oriented Programming (OOP), Linux, APIs, Web Forms, JavaScript, Full-stack, Google Maps, Software Architecture, Project Management, React, Kubernetes, Design Patterns, PHP 7, Linode, Akamai, Web Scraping, Python, PostgreSQL, SQL, HTML, CSS, Node.js, Scraping, CI/CD Pipelines, Chart.js, Amazon Web Services (AWS), Architecture, System Architecture, System Architecture Design, Software Design, Scrum, Ubuntu, Amazon Simple Queue Service (SQS), Apache, Third-party APIs, Third-party Integration, Git, Technical Leadership, Full-stack Development
Senior Web Developer | Team Lead
2018 - 2020
Polaire
- Worked on WeSalam, an app for Umrah and Hajj spiritual pilgrimages. I oversaw the development of all back-end functionality, including deployment.
- Created an admin console to control all data in the application.
- Built a dashboard with custom analytics for database data analytics.
- Developed a logging system to monitor all internal user actions in the console.
- Managed AWS, including Amazon EC2, Amazon Relational Database Service (RDS), Amazon S3, load balancer, and AWS Auto Scaling.
- Collaborated with a UI/UX team to ensure requirement feasibility.
Technologies: Bitbucket, Jira, Databases, PHP, MySQL, Symfony, Laravel, Amazon Web Services (AWS), API Integration, REST APIs, Back-end, Data Structures, Object-oriented Programming (OOP), Linux, APIs, Web Forms, JavaScript, Full-stack, Google Maps, Google Geocoding API, Geocoder, Software Architecture, Project Management, Design Patterns, PostgreSQL, SQL, HTML, CSS, Chart.js, System Architecture, Scrum, Apache, Payment APIs, Technical Leadership, Full-stack Development
Lead Software Engineer - Laravel & PHP
2018 - 2018
Mysay
- Worked on multiple web-based applications used to run competitions inside the mysay app.
- Created a content management system for all data on the app, including articles, questionnaires, and polls.
- Led and managed a team of web and mobile developers to achieve the project goals.
- Managed the project needs, such as database tables and optimized algorithms.
Technologies: Laravel, Symfony, PHP, Amazon Web Services (AWS), Full-stack, APIs, OAuth 2, Software Architecture, Project Management, Design Patterns, JavaScript, HTML, CSS, Chart.js, Payment APIs
Team Leader | Core Developer
2016 - 2018
obsoft
- Worked on multiple projects, including content management systems, websites, APIs, payment gateway integration, and customer relationship management.
- Managed the team members' tasks and guided them with code best practices.
- Collaborated with the client to transform project requirements into technical tasks to achieve the project goal.
Technologies: Symfony, Symfony 2, Symfony 3, MySQL, HTML, CSS, HTML5, APIs, OAuth 2, Back-end, Full-stack, Magento, Google Geocoding API, Geocoder, Software Architecture, Project Management, Design Patterns, JavaScript, Chart.js
Project History
SUPPLYENG
A platform that helps users find a specific product at a store or manufacturer. We offer a high-end, user-friendly platform that facilitates communication and connects suppliers in the construction field with customers. We use an advanced AI search engine that helps users find what they need in seconds. Users can then reach out to suppliers, request quotations, and compare prices.
Our mission is to save our customers time and money without compromising on quality while reducing the search time and offering a customizable list of similar products and services to compare.
Using filter aggregators and quotation requests, our platform helps users make choices based on their needs. Suppliers can offer their products to a targeted audience and benefit from predictive analytics to maximize their sales, all while providing a detailed digital catalog that includes technical sheets, high-quality imagery, 2D drawings, 3D objects, and more.
Our mission is to save our customers time and money without compromising on quality while reducing the search time and offering a customizable list of similar products and services to compare.
Using filter aggregators and quotation requests, our platform helps users make choices based on their needs. Suppliers can offer their products to a targeted audience and benefit from predictive analytics to maximize their sales, all while providing a detailed digital catalog that includes technical sheets, high-quality imagery, 2D drawings, 3D objects, and more.
Education
2011 - 2017
Master's Degree in Software Engineering
Antonine University - Baabda, Lebanon
Skills
Libraries/APIs
REST APIs, Google Maps, Node.js, Chart.js, OpenAI API, Google Geocoding API, React, Stripe, Vue
Tools
RabbitMQ, Apache, Git, Geocoder, Claude Code, Bitbucket, Jira, Amazon Simple Queue Service (SQS)
Languages
PHP, JavaScript, HTML, CSS, HTML5, PHP 5, PHP 8, PHP 7, SQL, CSS3, Python, TypeScript
Frameworks
Symfony, Laravel, Symfony 6, OAuth 2, Symfony 2, Symfony 3
Paradigms
Object-oriented Programming (OOP), Design Patterns, Unit Testing, Scrum
Platforms
Amazon Web Services (AWS), Linux, Linode, Ubuntu, Docker, Blockchain, Magento, Kubernetes
Storage
MySQL, MongoDB, PostgreSQL, Web Forms, MariaDB, Databases, Elasticsearch, Redis, Redis Cache
Industry Expertise
Project Management
Other
API Integration, Back-end, Data Structures, APIs, Full-stack, Software Architecture, Web Scraping, CI/CD Pipelines, Architecture, System Architecture, System Architecture Design, Software Design, Credit Card Processing, Third-party APIs, Third-party Integration, Payment APIs, ChatGPT API, Large Language Models (LLMs), Technical Leadership, Full-stack Development, Payment Gateways, Akamai, eCommerce, Scraping, Web Crawlers, CTO, Calculators, Gpt-5, AI Agents, Manticore Search, Vector Data, Embedding Models
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