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Basel Sababa
Verified Expert in Engineering
Full-stack Developer
Tbilisi, Georgia
Toptal member since April 12, 2021
Bio
Basel is a full-stack web developer with 7+ years of professional web development experience. He specializes in building secure RESTful services and single-page applications, using frameworks like React, Remix, Laravel, Express.js, and Angular. Basel excels at collaborating with other developers in fast-paced environments, and he delivers excellence in any scenario.
Portfolio
Personio
TypeScript, Next.js, React, Tailwind CSS, JavaScript, GraphQL, Contentful...
Delft Advanced Biorenewables
JavaScript, HTML, CSS, Content Management Systems (CMS), Full-stack, Gatsby...
NematX AG
React, Node.js, Express.js, TypeScript, JavaScript, Tailwind CSS, NestJS...
Experience
- JavaScript - 7 years
- CSS - 7 years
- HTML5 - 7 years
- Single-page Applications (SPAs) - 6 years
- React - 5 years
- Express.js - 4 years
- Next.js - 4 years
- Laravel - 2 years
Work Experience
Front-end Developer
2024 - PRESENT
Personio
- Contributed to upgrading the marketing website to the new rebranded version, implementing vital parts such as navigation and component spacing logic.
- Implemented new features and fixed bugs through Jira.
- Leveraged Contentful's migration tool. Implemented several migration scripts for migrating data on Contentful.
- Applied various techniques to improve the overall performance of the marketing website.
Technologies: TypeScript, Next.js, React, Tailwind CSS, JavaScript, GraphQL, Contentful, Code Review, Code Refactoring, Pixel Perfect, Responsiveness, API Integration, Middleware, Bug Fixes, UX Design, Website Management
Full-stack Web Developer
2025 - 2025
Delft Advanced Biorenewables
- Developed an order form where users can purchase products and pay through Stripe.
- Implemented a serverless function that receives events from Stripe webhook and saves the order information in HubSpot CRM.
- Implemented new features on the existing website, including uploading videos to Sanity and placing them on any page.
- Fixed issues related to the live preview feature of the website with Sanity to ensure that all components render correctly in the preview and with no errors.
Technologies: JavaScript, HTML, CSS, Content Management Systems (CMS), Full-stack, Gatsby, Sanity Studio, React, Stripe, Stripe API, HubSpot CRM, HubSpot, API Integration, Back-end Development, Startups, Bug Fixes, Website Management, API Design
Full-stack Developer
2024 - 2025
NematX AG
- Executed a comprehensive redesign of the application in alignment with the Figma design, collaborating closely with the designer throughout the process.
- Implemented new features of the application that triggered various actions on 3D printers.
- Integrated logging of printer temperature data into InfluxDB and developed visual graphs within the application to display this information.
- Implemented new back-end API endpoints and back-end logic relating to printer functionality.
- Implemented webcam streaming to an RTMP server, and watching the steam using an HLS player.
Technologies: React, Node.js, Express.js, TypeScript, JavaScript, Tailwind CSS, NestJS, Next.js, Databases, TwinCAT PLC, WebSockets, Server-side Rendering (SSR), CSS3, Storybook, Iframes, Responsive Web Design (RWD), Data Visualization, Tailwind UI, Amazon Web Services (AWS), Ajax, Recharts, Code Refactoring, API Integration, Architecture, Database Architecture, Amazon EC2, Docker, Back-end Development, Minimum Viable Product (MVP), Startups, Infrastructure as Code (IaC), Bug Fixes, UX Design, Amazon S3 (AWS S3), API Design, Prisma, Swagger
Senior Front-end Engineer
2022 - 2024
Tinloof
- Developed, maintained, and fixed bugs on dozens of websites, including being the project owner/lead developer for some of them.
- Set up subscription-based access using Stripe for a video-generation AI application.
- Migrated websites to a better setup with Next.js and Sanity. Some migrations included a full revamp of the website, while others included migrating content from another CMS to Sanity and making necessary changes to the front end.
- Communicated and discussed with the clients constantly, which included delivering project updates, providing assistance, answering questions, and receiving bug reports and feature requests.
Technologies: TypeScript, HTML, JavaScript, CSS, React, Web Development, Next.js, Gatsby, Remix, Figma, GitHub, Tailwind CSS, Stripe, Front-end Development, Content Management Systems (CMS), Agile Software Development, PostgreSQL, Data Structures, GraphQL, Axios, Back-end, CircleCI, CSS Animations, Full-stack Development, Databases, WebApp, Off-page SEO, On-page SEO, Technical SEO, Supabase, Headless CMS, Vercel, Server-side Rendering (SSR), CSS3, Storybook, Iframes, Responsive Web Design (RWD), Landing Pages, SEO Tools, Landing Page Optimization, Google SEO, AngularJS, Data Visualization, Contentful, Contentstack, Tailwind UI, Ajax, Shadcn, Stripe API, Code Review, OpenAI API, Code Refactoring, Pixel Perfect, Responsiveness, jQuery, Bootstrap, API Integration, Architecture, CI/CD Pipelines, Database Architecture, Security, Solution Architecture, Technical Leadership, Software Architecture, Docker, PHP Frameworks, FastAPI, Back-end Development, Minimum Viable Product (MVP), Startups, Infrastructure as Code (IaC), Middleware, Bug Fixes, eCommerce, Progressive Web Applications (PWAs), Design, UI Design, UX Design, Vite, Healthcare, Sanity Studio, Website Management, Jest
Front-end Web Developer
2021 - 2022
PriviChat
- Reworked the application's layout and appearance to add an improved, more modern feel and a smoother user experience.
- Developed various functionalities and pages of the application using Ionic and React, ensuring they worked properly on iOS and Android, and contributed to the application's web version.
- Tracked and fixed bugs using the Azure DevOps issue tracking system.
Technologies: React, Redux, Ionic, Microsoft Teams, HTML5, CSS, Visual Studio Code (VS Code), Sass, Webpack, Front-end, Component Libraries, UI Development, User Interface (UI), User Experience (UX), Material UI, Front-end Development, Agile Software Development, Axios, Back-end, Full-stack Development, Databases, WebApp, Search Engine Optimization (SEO), Server-side Rendering (SSR), CSS3, Responsive Web Design (RWD), Ajax, Security, Bug Fixes, Swagger
Web/Software Developer
2019 - 2022
AC Goldman Solutions GSS
- Developed an admin interface using React and Express.js with authentication in order to administer various services through the interface.
- Developed a website that demonstrated a use case for EBSI that simulates the actual procedure of issuing a verifiable credential and adding it to the user's e-wallet. The website was developed from scratch in React and NestJS.
- Integrated multiple services and their APIs into the admin interface after collaborating with multiple developers.
- Developed an application written in Python that analyzes a binary executable file in depth and produces a list of vulnerabilities with an accuracy score.
- Developed an intrusion detection program using Python and Snort.
Technologies: React, Express.js, Python, Assembly, Bash, C, GitHub, Trello, Microsoft Teams, HTML5, CSS, Node.js, Visual Studio Code (VS Code), WebStorm, MongoDB, Linux, REST APIs, Git, C++, Single-page Applications (SPAs), NestJS, JSON, Responsive, Responsive Web Apps, Responsive Layout, Responsive UI, Next.js, Sass, Agile, Webpack, Vue, RESTful Web Services, Front-end, Component Libraries, Testing, UI Development, Design Systems, User Interface (UI), User Experience (UX), Material UI, Front-end Development, Axios, Full-stack Development, Databases, WebApp, AngularJS, Ajax
Front-end Web Developer
2018 - 2019
uugot.it
- Developed web pages based on UI mockups in a web application schools use to teach languages through translated videos and worksheets.
- Tracked and fixed issues and bugs using GitLab issue management.
- Collaborated with back-end developers to synchronize communication between the front end and the back end.
Technologies: Angular, CSS, GitLab, HTML5, Ionic, Slack, Visual Studio Code (VS Code), WebStorm, TypeScript, Git, REST APIs, Single-page Applications (SPAs), JSON, Responsive, Responsive Web Apps, Responsive Layout, Responsive UI, Sass, Agile, Front-end, UI Development, User Interface (UI), User Experience (UX), Material UI, Front-end Development, Axios, WebApp, AngularJS
Web Developer
2018 - 2018
Foody
- Developed several pages of the Foody website, using Angular and Ionic.
- Developed web components in Angular to be integrated into the website.
- Created an API with Node.js, which handled various actions within Asana using the Asana API.
Technologies: Angular, Ionic, CSS, Node.js, HTML5, Slack, Visual Studio Code (VS Code), Single-page Applications (SPAs), GitHub, TypeScript, REST APIs, Git, JSON, Responsive, Responsive Web Apps, Responsive Layout, Responsive UI, Front-end, Testing, UI Development, User Interface (UI), User Experience (UX), Front-end Development, WebApp
Project History
Personio Marketing Website
Persion is Europe's leading HR software provider. I was one of the four software developers working on updating the marketing website to the new rebranded version. Additionally, I worked on implementing new features, fixing bugs, and improving the overall performance of the website.
Marketing Website for A Diaper Company
https://www.rascalsbaby.comA marketing website where the company advertised the range of diapers and cleaning wipes they offer and where you can buy them. The website was created with Next.js and Sanity. I was the lead developer in this project, developing most of the website, reviewing other developers' work, and maintaining constant communication with the client company.
Marketing Website for Getambassador
https://www.getambassador.io/This is a marketing website for Getambassador, where they advertise their product. The website was created with Remix and Sanity. The content is hosted on Sanity, a headless CMS, and pulled into the website on the Remix front-end. I was one of the main developers in the project and responsible for developing the majority of the website.
Web Application for A Fortnite Custom Maps Company
https://www.beyondcreative.gg/This was the first website I created working with Tinloof, and it was a marketing website for a company called Beyond Creative, which specializes in creating custom Fortnite maps. The website was created in Next.js and Sanity. I was the only developer on this project and developed the entire website from scratch, closely following a Figma design.
Demo Store for Tinloof
This is a demo store website for Tinloof to showcase an example of Shopify stores that the agency can create and deliver. The website was created with Remix and Sanity, as well as Shopify for store management. I was the only developer on this project and developed the entire website from scratch, according to the Figma design.
Online Puzzle Game
An online riddle/puzzle game I developed, using Angular for the front end and Firebase for the back end. The objective of the game is to think outside the box in order to correlate some clues and an image to find the correct answer. The game consists of 50 challenging levels. Upon completion, the player earns the right to add their name to the hall of fame.
Online Ordering Platform
An online ordering platform that includes search and filter features and provides a great user experience while ordering products online. I created the platform, using React with Redux for the front end and Laravel for the back end.
Computer Inventory Management System
An application that was developed to enable a computer lab to keep track of their equipment. I developed the back end with Express.js and the front end with Ionic, as well as the communication between them.
System Monitoring Application
This application allowed the user to monitor various system resources, such as memory and CPU usage, and to deploy custom monitors that were instructed to monitor certain users/actions and notify the admin. For example, the application could detect when an unauthorized file was read or when a delicate part of the system was modified. I developed this application using Python and Sysdig, and it was my final university project.
Daedalos | Reverse Engineering Application
A reverse engineering application that analyzes binary files and finds a list of vulnerabilities. It works by first parsing the binary file to extract information about the file. The binary file is then disassembled to convert the program to assembly language instructions. These instructions are then analyzed deeply, using a Python script to find vulnerabilities such as buffer overflows.
Education
2016 - 2020
Bachelor's Degree in Computer Science
University of Nicosia - Nicosia, Cyprus
Certifications
FEBRUARY 2021 - PRESENT
HashCode Competition Certificate (Top 150)
SEPTEMBER 2020 - PRESENT
Problem Solving (Advanced)
HackerRank
Skills
Libraries/APIs
Node.js, React, Antd, REST APIs, PyQt 5, jQuery, React Redux, Vue, Stripe, Recharts, Stripe API, OpenAI API
Tools
Slack, WebStorm, PhpStorm, Microsoft Teams, Git, Prisma, GitLab, GitHub, Trello, Apache, Webpack, Figma, CircleCI, Shadcn, TwinCAT PLC
Languages
CSS, Python, HTML5, TypeScript, PHP, JavaScript, SQL, HTML, CSS3, Assembly, Bash, C, SCSS, Java, C++, C#, JavaScript 5, JavaScript 6, Sass, GraphQL
Frameworks
Angular, Express.js, Laravel, Redux, Next.js, Remix, Tailwind CSS, WebApp, AngularJS, Swagger, Ionic, Bootstrap, NestJS, Material UI, Jest, Flask, Unity
Paradigms
Object-oriented Programming (OOP), Agile Software Development, Responsive Web Design (RWD), Code Refactoring, Unit Testing, Penetration Testing, REST, RESTful Development, Responsive, Responsive Layout, Agile, Testing, Off-page SEO, On-page SEO, Search Engine Optimization (SEO), UX Design, UI Design
Platforms
Vercel, Sanity Studio, Visual Studio Code (VS Code), Sysdig, Firebase, Heroku, Linux, Apache2, Ubuntu, Contentful, Contentstack, Amazon Web Services (AWS), Amazon EC2, Docker, HubSpot
Storage
MySQL, MongoDB, JSON, Cloud Firestore, PostgreSQL, Databases, Database Architecture, Amazon S3 (AWS S3)
Industry Expertise
Healthcare
Other
Algorithms, Web Development, Single-page Applications (SPAs), RESTful Services, Computer Science, APIs, Full-stack, RESTful Web Services, Front-end, UI Development, Front-end Development, Data Structures, Back-end, Full-stack Development, Headless CMS, Server-side Rendering (SSR), Tailwind UI, Ajax, Code Review, Pixel Perfect, Responsiveness, API Integration, Back-end Development, Minimum Viable Product (MVP), Startups, Bug Fixes, Progressive Web Applications (PWAs), Website Management, API Design, Websites, Responsive Web Apps, Responsive UI, Component Libraries, Design Systems, User Interface (UI), User Experience (UX), Gatsby, Content Management Systems (CMS), Axios, CSS Animations, Technical SEO, Supabase, Storybook, Iframes, Landing Pages, SEO Tools, Landing Page Optimization, Google SEO, Data Visualization, Architecture, CI/CD Pipelines, Solution Architecture, Technical Leadership, Software Architecture, FastAPI, Vite, Data Mining, Machine Learning, Neural Networks, Artificial Intelligence (AI), Reverse Engineering, Virtual Reality (VR), WebSockets, HubSpot CRM, Security, PHP Frameworks, Infrastructure as Code (IaC), Middleware, eCommerce, Design
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