Saba is available for hire
Hire SabaSaba Tkeshelashvili
Verified Expert in Engineering
Back-end Developer
Tbilisi, Georgia
Toptal member since February 4, 2022
Bio
Saba is a full-stack developer with experience since 2017, working across PHP/Laravel, JavaScript/Node.js, Java, Python, and React. He is a self-motivated professional who thrives in collaborative teams and has delivered high-quality solutions across industries, including SaaS, food and beverage, e-learning, travel, gambling, entertainment, blockchain, and social media.
Portfolio
PepsiCo Global
PHP, Java, Pimcore, MySQL, PostgreSQL, Spring Boot, Microservices, Back-end
Flutter Entertainment
PHP, Laravel, JavaScript, HTML, MySQL, Advertising, Redis, Composer...
Bacarai, Inc.
PHP, Laravel, SQL, React, Vue, Stripe, Google Cloud Platform (GCP)...
Experience
- PHP - 6 years
- Laravel - 6 years
- MySQL - 6 years
- Node.js - 5 years
- PostgreSQL - 5 years
- React - 3 years
- Java - 2 years
- Python - 2 years
Preferred Environment
MacOS, JetBrains IDE
The most amazing...
...work I’ve done is improving large codebases by enforcing good standards, refactoring wisely, and boosting performance.
Work Experience
PHP Back-end Developer 3
2023 - 2026
PepsiCo Global
- Contributed to the successful rewrite of a legacy rewards engine service, migrating core functionality from PHP to Java to improve maintainability and scalability.
- Participated in the development of a new admin portal, collaborating across front-end (React) and back-end (Java) layers to deliver end-to-end functionality.
- Improved application performance by consolidating multiple large SQL queries into a single optimized query, reducing database load and execution time.
- Actively supported the QA team by clarifying functional requirements, guiding test scenarios, and assisting with validation of expected system behavior.
Technologies: PHP, Java, Pimcore, MySQL, PostgreSQL, Spring Boot, Microservices, Back-end
Part-time Full-stack Developer
2021 - 2024
Flutter Entertainment
- Designed a user management system where the primary user could create, edit, or disable users and manage roles.
- Upgraded the main project from Laravel 5 to Laravel 8.
- Optimized the main project, fixed double database query calls, and improved the overall performance by rewriting complex parts of the code.
- Implemented authentication via bearer token and switched default authentication from session to token.
- Improved alerts in the whole project. Instead of displaying all errors in the same place, each field had its own error section.
- Integrated an SMS sending functionality that sent messages via SMPP.
Technologies: PHP, Laravel, JavaScript, HTML, MySQL, Advertising, Redis, Composer, Facebook Ads, Facebook API, Node.js, Banner Ads, Full-stack, Object-oriented Programming (OOP), Unit Testing, Design Patterns, SQL, NestJS, Express.js, TypeScript, jQuery, GitHub Actions, Back-end
Back-end Developer
2022 - 2023
Bacarai, Inc.
- Made the data collection process asynchronous, enabling parallel API calls and data processing, which significantly reduced overall processing time.
- Optimized slow Laravel ORM queries by improving database structure with indexes and refining model relationships, enhancing query efficiency and application performance.
- Integrated multiple GDS providers via SOAP and REST APIs, ensuring seamless connectivity and data exchange across systems.
- Contributed to front-end development of main UI and back-office applications, delivering responsive and user-friendly interfaces.
Technologies: PHP, Laravel, SQL, React, Vue, Stripe, Google Cloud Platform (GCP), DigitalOcean, Amazon Web Services (AWS), NoSQL, Amadeus, Python, Node.js, Microservices, Express.js, Next.js, DevOps, TypeScript, GitHub Actions, SendGrid, Back-end
Part-time Back-end Developer
2021 - 2023
MindGeek
- Updated the file metadata reader functionality, which reduced response time by at least two seconds.
- Implemented the banned words filtering functionality in search.
- Wrote a file transfer microservice in Go that transferred files between different storages.
- Integrated a dynamic WebP support to display the WebP type of image if the extension in the image link was replaced with WebP, regardless of the initially uploaded image type.
- Wrote tests for all microservices, fully covering every function in every project.
Technologies: Go, PHP, Laravel, Redis, Amazon Web Services (AWS), Composer, REST APIs, Microservices, Back-end, APIs, Object-oriented Programming (OOP), Unit Testing, SQL, GitHub Actions
Back-end Developer
2019 - 2020
DigitalMate (now Onesoul)
- Developed a website for a construction company with images of their building blocks uploaded on the dashboard to show all the necessary details, such as sectors, floors, apartments, and room names.
- Created a website for a travel agency with a complex dashboard, where they could manage their tours and hotels, prices, promotions, and offers, and accept bookings.
- Developed a booking website for a startup with two platforms—one for users and one for restaurants. Wrote the REST APIs for both platforms. Their functionality was quite simple, including booking tables and ordering takeout or delivery.
- Built a tool for Excel and CSV data processing. It read data from files, processed it, and sent it to its destination.
- Developed a forum-like gaming website platform to enable users to sell their gaming accounts, CDs, and gaming inventory. Users could also publicly discuss games and have private chats.
Technologies: PHP, Laravel, JavaScript, Admin Panels, PostgreSQL, MySQL, DigitalOcean, REST APIs, Regular Expressions, Google Cloud, Full-stack, Object-oriented Programming (OOP), SQL, TypeScript, MongoDB, jQuery, GitHub Actions, SCSS, Back-end
Back-end Developer
2017 - 2019
Keplertek
- Wrote a smart contract for the ERC-20 token on the Ethereum blockchain. It had functionalities such as pause, unpause, freeze, burn, transfer, and transfer ownership.
- Developed a dashboard where customers could buy our tokens with BTC or ETH.
- Collaborated with a team to develop a social platform where users could post statuses, videos, images, projects, and job vacancies, have a live chat with each other, and ask for funding.
- Built a real-time messaging functionality with Laravel and Pusher to allow users to send and receive messages through WebSocket.
- Wrote a simple and helpful tool for task management, like Jira. It was an utterly custom-made and company-oriented tool.
- Developed an email sending tool that placed input text in the template and sent it to clients. Admin could also create groups and send bulk emails.
Technologies: PHP, Laravel, HTML, JavaScript, Sockets, Solidity, MySQL, Vue, REST APIs, Email, Back-end, Object-oriented Programming (OOP), SQL, jQuery, GitHub Actions
Experience
Banner Management System
A banner management system for a large-scale gambling company includes all possible advertising types such as static banners, pre-roll video ads, real-time updated banners, marketing emails, marketing SMS, and Facebook ads. This is a platform where customers can create a new banner of any type and send it to website owners to place it on their pages.
Analytics
Placing Google Analytics code on a website will increase page size and badly affect its performance. To maximize page loading speed, I developed a Google Analytics alternative package written in Laravel that can be used for any website.
After installing the package via Composer, the user gets access to the personal analytics dashboard, which has a set of all possible data filters. Since the package is working in the background, it runs as a queued job and doesn't affect performance. It tracks route visits itself, and there's no need for additional JavaScript files in a website source code.
After installing the package via Composer, the user gets access to the personal analytics dashboard, which has a set of all possible data filters. Since the package is working in the background, it runs as a queued job and doesn't affect performance. It tracks route visits itself, and there's no need for additional JavaScript files in a website source code.
Social Platform
I created a back-end functionality for a social website that was a combination of Facebook, Kickstarter, and blockchain.
It was a social platform where users could communicate via messenger, share statuses, photos, videos, and startups and their progress, create detailed projects, ask for funding in cryptocurrency, post job openings, and hire people.
It was a social platform where users could communicate via messenger, share statuses, photos, videos, and startups and their progress, create detailed projects, ask for funding in cryptocurrency, post job openings, and hire people.
Laravel Admin Panel
An admin panel package for Laravel for creating a dashboard and the whole website.
The user sets up the configuration in the package, including modules and fields each module should have. After running the script, the package generates the whole website structure, such as databases, modules, relationships, resources, controllers, and routing, with its fully functional admin panel.
The user sets up the configuration in the package, including modules and fields each module should have. After running the script, the package generates the whole website structure, such as databases, modules, relationships, resources, controllers, and routing, with its fully functional admin panel.
Financial Management
Developed a comprehensive financial management application that allowed users to record transactions, calculate income, taxes, and expenses, and track finances across multiple currencies with automatic conversions. Implemented automatic expense categorization and generated detailed income and expense statistics based on various criteria.
Education
2015 - 2019
Bachelor's Degree in Computer Engineering
Free University of Tbilisi - Tbilisi, Georgia
Skills
Libraries/APIs
Node.js, REST APIs, jQuery, React, Vue, Sockets, Facebook API, Pusher, Stripe
Tools
SendGrid, Composer, PhpStorm, WebStorm
Languages
PHP, HTML, TypeScript, Go, Java, JavaScript, SQL, Python, CSS, Solidity, SCSS
Frameworks
Laravel, NestJS, Express.js, Next.js, Spring Boot
Paradigms
Microservices, Object-oriented Programming (OOP), Unit Testing, Design Patterns, Automation, DevOps
Platforms
DigitalOcean, Amazon Web Services (AWS), Linux, Ubuntu, MacOS, Pimcore, Google Cloud Platform (GCP)
Storage
MySQL, PostgreSQL, Redis, Google Cloud, Databases, NoSQL, MongoDB
Other
Programming, Back-end, GitHub Actions, Advertising, Banner Ads, Facebook Ads, Admin Panels, Email, Regular Expressions, APIs, Full-stack, WebSockets, JetBrains IDE, Amadeus
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