Sasa is available for hire

Sasa Tokic

Verified Expert in Engineering

Machine Learning Developer

Location

Zadar, Croatia

Toptal Member Since

February 4, 2014

A seasoned full-stack Laravel developer with 15+ years in web technologies and AI, Sasa excels in integrating machine learning and large language models (LLMs) into robust web solutions. Currently a PhD candidate in computer vision, he blends innovative AI research with practical development, leading projects that push technological boundaries.

Full-stack Development PHP CSS HTML5 JavaScript MySQL Databases WordPress Laravel PostgreSQL GitHub Git Node.js MongoDB Vue Statamic

Portfolio

TNT Studio d.o.o.

MySQL, PHP, Large Language Models (LLMs), Full-stack, GPT, Machine Learning...

Magnet Co.

CSS, PHP, HTML5, JavaScript, MySQL, Laravel, Node.js, Software Architecture...

Juicy Results

WordPress, jQuery, JavaScript, Subversion (SVN), PostgreSQL, MySQL, PHP, CSS...

Experience

MySQL - 15 years JavaScript - 15 years PHP - 15 years Laravel - 10 years Python - 5 years Machine Learning - 5 years Computer Vision - 5 years Natural Language Processing (NLP) - 5 years

Availability

Part-time

Preferred Environment

Visual Studio Code (VS Code)

The most amazing...

...things I've built: a custom ERP for a top German health company, an AI chatbot for legal help, and another for customer support.

Work Experience

CEO

2013 - PRESENT

TNT Studio d.o.o.

Developed and launched advanced ERP systems: Spearheaded the development and deployment of comprehensive ERP/CRM solutions, enhancing client business operations.
Designed and integrated AI-powered chatbots, leading to a 30% reduction in average customer query resolution time and a 15% increase in customer satisfaction for our clients.
Developed and optimized numerous business full-stack projects successfully, achieving an average 25% increase in user engagement and a 35% improvement in load times, utilizing Laravel and modern full-stack development practices.
Managed and directed multiple full-stack development projects from concept to launch, ensuring seamless integration of front-end and back-end technologies.
Responsible for client acquisition and contract negotiation.

Technologies: MySQL, PHP, Large Language Models (LLMs), Full-stack, GPT, Machine Learning, CSS, HTML5, JavaScript, Laravel, Node.js, Python, Supply Chain Management (SCM), Software Architecture, MongoDB, Computer Vision, Natural Language Processing (NLP), Databases, Full-stack Development, WordPress, Vue

Senior Web Developer

2012 - 2014

Magnet Co.

Developed WordPress eCommerce solutions.
Developed custom Laravel applications.
Improved speed load times for various client projects.
Responsible for PSD to HTML Conversion.
Responsible for client support.

Technologies: CSS, PHP, HTML5, JavaScript, MySQL, Laravel, Node.js, Software Architecture, MongoDB, Databases, Full-stack Development, WordPress

Senior WordPress developer

2011 - 2013

Juicy Results

Developed WordPress eCommerce solutions.
Improved speed load times for various client projects.
Responsible for custom WordPress plugin development.
Responsible for integration of websites with various APIs.
Responsible for WordPress custom theme development.

Technologies: WordPress, jQuery, JavaScript, Subversion (SVN), PostgreSQL, MySQL, PHP, CSS, HTML5, Laravel, Software Architecture, Databases, Full-stack Development

Web Developer

2008 - 2012

CARNet - Croatian Academic and Research Network

Created a custom shift management application for internal call center staff with payroll management.
Responsible for security and development of custom CMS system powering over 1,000 websites in Croatia.
Developed Radio on Demand service in cooperation with Croatian national television and radio.
Converted/migrated a web project from a custom CMS to WordPress for KBC Rebro.
Supported and developed internal tools.

Technologies: Asterisk, PL/SQL, Smarty, MooTools, WordPress, jQuery, JavaScript, Git, PostgreSQL, MySQL, PHP, CSS, HTML5, Laravel, Software Architecture, Databases, Full-stack Development

Contact Center Agent

2007 - 2008

CARNet - Croatian Academic and Research Network

Responsible for customer support via phone and email.
Responsible for administering user database.
Improved call center procedures.
Responsible for presenting on conference.

Technologies: IVR, Customer Relationship Management (CRM)

Contact Center Agent

2006 - 2007

SRCE - University Computing Center

Responsible for customer support via phone and email.
Administered user database.
Responsible for front office work.

Technologies: CSS

Experience

FindMyCoaching

Custom built web application built on Laravel framework and AngularJS. Manages students and institutes and enables easy search.

vonHolzhausen.com

http://vonholzhausen.com/

Custom made eCommerce site powered by WordPress
and WooCommerce.

CARNet - Official website

As part of the team, developed and maintained official website of Croatian Academic and Research Network built on custom CMS.

Portal za škole

http://skole.hr/

As part of the team, developed and maintained skole.hr portal based on a custom CMS. Also developed custom modules and fixed security issues.

e-Knjižnica

Implemented and developed various modules on a custom CMS, maintained and improved the underlying CMS, and converted design from PSD to custom CMS and Smarty templates.

KBC Zagreb

http://www.kbc-zagreb.hr/

Converted and migrated the working website from a custom CMS to WordPress maintaining data, functional integrity, and design.

Education

2012 - 2014

Master's Degree in Information Technology

Polytechnic of Zagreb - Zagreb, Croatia

2005 - 2008

Bachelor's Degree in Computer Science

Polytechnic of Zagreb - Zagreb, Croatia

Certifications

OCTOBER 2018 - PRESENT

CTL.SC1x: Supply Chain Fundamentals

MITx

DECEMBER 2017 - PRESENT

Improving Deep Neural Networks: Hyperparameter Tuning, Regularization, and Optimization

Coursera

AUGUST 2017 - PRESENT

Neural Networks and Deep Learning

Coursera

NOVEMBER 2015 - PRESENT

Machine Learning Foundations: A Case Study Approach

Coursera

Skills

Libraries/APIs

Node.js, jQuery, Vue, MooTools, PayPal API, Facebook API

Tools

Git, Subversion (SVN), Sublime Text, GitHub, Adobe Photoshop, Figma, SugarCRM, Asterisk

Frameworks

Laravel, Bootstrap 3, Bootstrap, Express.js, PHPUnit, AngularJS, Codeception, Tailwind CSS, Smarty, Zend Framework

Languages

PHP, CSS, HTML5, JavaScript, Python, Java, C#

Paradigms

REST, Object-oriented Programming (OOP), Agile Software Development, Unit Testing, Test-driven Development (TDD), Continuous Integration (CI), Responsive Web Design (RWD)

Platforms

WordPress, Statamic, Windows, Linux, Android, Visual Studio Code (VS Code)

Storage

MySQL, PostgreSQL, MongoDB, Databases, Amazon S3 (AWS S3), PL/SQL, Memcached, Redis

Other

Customer Relationship Management (CRM), Back-end Development, Node.js Consulting Specialist, Forge, Full-stack Development, Software Architecture, Machine Learning, Computer Vision, Natural Language Processing (NLP), Stock Trading, Supply Chain Management (SCM), IVR, Large Language Models (LLMs), Full-stack, GPT, Supply Chain, Supply Chain Optimization

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.

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.

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