Aleksandar Perisic, Developer in Sarajevo, Federation of Bosnia and Herzegovina, Bosnia and Herzegovina
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Aleksandar Perisic

Verified Expert  in Engineering

WordPress Developer

Location
Sarajevo, Federation of Bosnia and Herzegovina, Bosnia and Herzegovina
Toptal Member Since
January 14, 2022

Aleksandar is a full-stack web developer with over a decade of experience managing and developing a wide range of projects, whether websites, WordPress, or HubSpot. He specializes in supporting marketing teams with everything digital, automating repetitive tasks, connecting different segments and services, and evolving their web environment to a better tech stack. Aleksandar thrives in team and solo developer environments and takes great pleasure in tackling challenging assignments.

Portfolio

Marketing Client
HubSpot, HubSpot CRM, Zapier, N8n, APIs, REST APIs, REST...
Regiondo GmbH
JavaScript, Figma, WordPress, HubSpot, Semrush, Agile, Web, Web Development...
Decom d.o.o.
PHP, WordPress, JavaScript, Microsoft Teams, Git, Sketch to WordPress...

Experience

Availability

Part-time

Preferred Environment

Windows, Git, SSH, WordPress, GSAP, ACF PRO, HubSpot, HubL, Websites, Web Development

The most amazing...

...audit I've performed included replacing legacy code and coding custom functions, which resulted in a 23% increase in client visits and sales.

Work Experience

Full-stack Developer

2022 - PRESENT
Marketing Client
  • Developed and maintained HUBL templates and modules for the marketing team.
  • Created custom modules to be used inside landing pages with a combination of HubDB as global blocks.
  • Made integrations with Zapier about scheduling repetitive tasks, sending forms to ChatGPT, and displaying responses.
  • Created dynamic modules, utilizing WordPress as the data source and using APIs to display data inside HubSpot custom modules.
  • Performed comprehensive website audits such as keywords and detailed and structured assessments with reports.
Technologies: HubSpot, HubSpot CRM, Zapier, N8n, APIs, REST APIs, REST, Page Speed Optimization, Performance Optimization

Full-stack Web Developer

2022 - 2023
Regiondo GmbH
  • Supported the marketing team with new WordPress and HubSpot features.
  • Conducted comprehensive website audits (360⁰ audits with detailed assessments and solutions).
  • Acted as a technical SEO consultant powered by Semrush and Ahrefs (GA4, keywords, A/B testing, structured data).
  • Managed the company's WordPress website, including the back and front end, plugins, and new features. Created a layout builder and planned a future with Gutenberg and Headless.
  • Managed the company's HubSpot website, including the back and front end, design, prototyping, and development of new modules and layouts.
  • Developed integrations with other services like HubSpot, n8n, and APIs.
Technologies: JavaScript, Figma, WordPress, HubSpot, Semrush, Agile, Web, Web Development, HubL

Full-stack WordPress Developer

2017 - 2022
Decom d.o.o.
  • Implemented specialized GSAP animation for landing pages to enhance user engagement and increase lead generation through captivating visual effects.
  • Provided high-quality consultations to clients, from helping them stay on the right track to boosting sales by nearly 33%.
  • Performed audits and optimization for a WordPress website and increased traffic by 35% in some cases.
  • Transformed design into SEO-friendly and conversion-optimized WordPress websites.
  • Provided consulting services about hosting and backups and set up scalable hosting infrastructure using cloud or disaster recovery plans for backups.
  • Developed professional shops from the delivered design, created responsive layouts, performed speed optimizations, and adjusted the cart and checkout to suit the client's needs.
  • Built the WooCommerce plugins such as auto add to cart, showing extra fields through the shopping steps, or implementing a custom process.
Technologies: PHP, WordPress, JavaScript, Microsoft Teams, Git, Sketch to WordPress, PSD to WordPress, WordPress to PDF, HTML to WordPress, WordPress API, Server Backups, Hosting, Plesk, Website Transfers, WooCommerce, Responsive, Responsive Web Design (RWD), Multilingual Websites, Bootstrap, Search Engine Optimization (SEO), Web Development, NPM, Advanced Custom Fields (ACF), Responsive UI, Figma, Google Analytics, Google Tag Manager, Web Security, User Interface (UI), Gatsby, Headless Software, Netlify, Full-stack, GraphQL, REST APIs, AWS Lambda, Gutenberg Editor, Payment APIs, eCommerce, Core Web Vitals, Page Speed Optimization, Performance Optimization

Senior WordPress Developer

2013 - 2022
Decom d.o.o.
  • Created eye-catching and responsive WordPress themes and functional plugins for client needs.
  • Developed in-house plugins that helped with various things, such as an applicant tracking system, Trello, and WordPress, enabling a better candidates overview and management.
  • Established a development process followed by developers and stakeholders.
  • Built and managed WordPress plugins using Git and SVN.
  • Automated project deployments from the local environment to staging and live with various tools, including GitHub and Bitbucket pipelines.
  • Converted and implemented PSD, Figma, and Sketch to WordPress.
  • Developed the website motion and animations, including scroll animations, horizontal scroll, vertical scroll, and animations on scroll.
  • Created the responsive web design with detailed cross-browser testing across all devices with BrowserStack.
Technologies: PHP, JavaScript, HTML5, CSS, WordPress Themes, WordPress, SEO Audits, Search Engine Optimization (SEO), Web Development, Composer, Responsive UI, Advanced Custom Fields (ACF), Figma, Google Analytics, Web Security, User Experience (UX), Headless Software, Netlify, Full-stack, REST APIs, AWS Lambda, Gutenberg Editor, Stripe, Payment APIs, eCommerce, ACF PRO, Core Web Vitals, Performance Optimization

WordPress Consulting Services

2021 - 2021
Immozeigen
  • Provided consultation services about WordPress in general, keeping it safe for future updates, implementing things, and keeping it as simple as possible.
  • Collaborated with a team of brilliant designers to test a call to action in the hero sections of the newsletter.
  • Enhanced and managed the Mailchimp integration into WordPress.
  • Created several Gutenberg blocks and shortcodes for Mailchimp's various hero sections to be used on the website.
Technologies: Mailchimp, PSD to Mailchimp, Gravity Forms, WordPress, Search Engine Optimization (SEO), PHP, Webpack, Advanced Custom Fields (ACF), Figma, Google Tag Manager, Web Security, Headless Software, Full-stack, GraphQL, SSL, MySQL, Core Web Vitals, Performance Optimization

Freelance WordPress Developer

2019 - 2020
West Austria Creative
  • Integrated automation for staging and local development with Git and webhook.
  • Implemented the responsive templates delivered by designers for specific elements and needs.
  • Carried out custom dynamic elements that could be used over the whole website with shortcodes.
  • Added new functionality to fetch posts via WordPress API in the created templates and shortcodes.
  • Created plugins for the custom post types to enable clients to change themes in the future and keep all data intact.
  • Supported a team of three designers during the whole process, from mockups to final product, and implemented all the web features.
  • Used Google Analytics, Google Tag Manager with Pixel, and other reporting tools to support the client.
Technologies: Git, GitHub, WordPress REST API, WordPress Plugins, Subversion (SVN), WordPress API, Docker, JavaScript, CSS, Gulp, jQuery, SCSS, WordPress, WordPress Themes, Plesk, Search Engine Optimization (SEO), Bootstrap, Sass, PHP, Advanced Custom Fields (ACF), Figma, User Interface (UI), WooCommerce API, Payment APIs, eCommerce

WordPress and SEO Consultant

2017 - 2020
DACH
  • Performed a technical and SEO audit of the site and created a report with a detailed plan of how to make better long and mid-tail keywords to reach more organic traffic. Achieved a 16% increase.
  • Handled an on-site SEO optimization and highly detailed SEO analysis of the entire site with Semrush and Ahrefs, from simple missing assets and rich snippets to advanced keyword tracking over time.
  • Developed robust, responsive, and customizable WordPress themes from scratch using Figma, Sketch, and Adobe XD.
  • Created Layout Builder with the Advanced Custom Fields (ACF) plugin by replacing the old legacy code of hardcoded meta boxes.
Technologies: SEO Audits, Keyword Research, Keyword Analysis, SEO Keyword Research, Semrush, Ubersuggest, Competitor Analysis & Profiling, Moz, Ahrefs, Website Ranking, Google, Google Rankings, WordPress, Google Analytics, Google Tag Manager, eCommerce, DOM, Page Speed Optimization, Performance Optimization

WordPress Developer

2009 - 2013
78Waves
  • Built sites for over a dozen clients, from small automation tasks for importing the remotely downloaded CSV files to PDF generator.
  • Tracked and fixed various bugs, optimized code, organized all steps, and created starter templates with Trello.
  • Managed large websites of 50+ GB, including the export, transfer, and import via SSH.
  • Specialized in improving page speed scores by using all the latest techniques and tools to ensure that a website is running at top speed.
Technologies: PHP, JavaScript, HTML, CSS, WordPress, Advanced Custom Fields (ACF), User Interface (UI), eCommerce

Travelic—Travel Agency Website

Travelic is a world travel agency that helps its customers to explore the world by providing the best travel packages at affordable prices. The company is famous for its customer service, which offers one-on-one customized trip planning according to customer preferences.

We completed the required tasks on time and delivered more than the client requested as we changed the hosting to UpCloud and improved the speed score by 20% more than planned.

EasyBilanz—Invoicing Inside WordPress

I created the custom theme for EasyBilanz using Advanced Custom Fields, post types, and features such as a PDF generator with auto-calculated prices, easy filtering with date range search, and the possibility of private invoices. The theme is created following the responsive web design approach.

HR Process and Custom Exports to Different Server

Created a functionality that enables all submitted data to be collected in the back end and delivered to Trello cards. A team of recruiters uses Trello because it is easier to navigate, select, and speed up the process of selection.

My tasks included exporting custom data to CSV and PDF, storing files in secure ways, and delivering files to a remote server by date, auto-generation, and delivery.

Custom Animations for Websites and Landing Pages

Using premium GreenSock Animation Platform (GSAP), I implemented interactive and immersive features from the designer guides to reflect the brand. The features included horizontal and vertical scrolling, InView and interactive animations, user interaction animations and effects, and custom animations for sliders to represent products uniquely.

Website Audits—Speed, Schema Markup, and Assets Optimization

I performed pre-launch website audits using Google's PageSpeed Insights and GTmetrix as starting points for speed and Waterfall view. The audits included:
• style and scripts optimizations,
• legacy upgrades,
• BrowserStack for cross-browser checks with real devices (iOS, Android, Win, macOS),
• speed optimizations,
• assets optimizations,
• purging,
• Cloudflare, CDN, and caching (server-side, client-side).

Extending Gravity Forms Survey Add-on

Created a custom plugin to extend the Gravity Forms Survey add-on. The result was a better UI/UX with custom JavaScript and SCSS, converted radio and checkboxes into buttons and a "tell us more" button that acts as conditional logic (show other fields), changing the interaction of the "quick submit" to "submit" button.

Languages

PHP, HTML, CSS, HTML5, ECMAScript (ES6), HubL, JavaScript, Sass, GraphQL, SCSS

Libraries/APIs

REST APIs, WooCommerce API, jQuery, Stripe, React, GSAP, WordPress API, WordPress REST API, Trello API, ScrollMagic

Tools

WPML, Google Analytics, NPM, Composer, Webpack, Figma, Gutenberg Editor, Zapier, Git, BrowserStack, Trello, Microsoft Teams, PhpStorm, Plesk, GitHub, Subversion (SVN), Gulp, Mailchimp, Advanced Custom Fields (ACF), ACF PRO, Moz, Ahrefs, N8n

Paradigms

Responsive Layout, Responsive Web Design (RWD), Responsive, Search Engine Optimization (SEO), Hosting, Continuous Deployment, Keyword Research, REST, Agile

Platforms

WordPress, WooCommerce, GreenSock Animation Platform (GSAP), Netlify, AWS Lambda, Windows, Docker, WordPress Theme Design, Web

Storage

MySQL, Web Forms

Industry Expertise

Marketing

Other

WordPress Themes, Cross-browser Testing, Cross-browser Compatibility, PSD to WordPress, Sketch to WordPress, WordPress Plugins, WordPress Design, APIs, SEO Audits, Front-end Development, Responsive UI, Google Tag Manager, Web Security, Design, Full-stack, SSL, Webhooks, eCommerce, Performance, HubSpot, Scraping, Theme Development, Beaver Builder, Web UX, Content Marketing Platforms, Core Web Vitals, Page Speed Optimization, Performance Optimization, Front-end, Website Optimization, WordPress to PDF, Google Insights, Scroll Animations, User Experience (UX), User Interface (UI), Gatsby, Headless Software, Payment APIs, Email Automation, Email Marketing Automation, Email Marketing, DOM, SSH, HTML to WordPress, Server Backups, Website Transfers, Disaster Recovery Plans (DRP), PSD to Mailchimp, Gravity Forms, Multilingual Websites, Yoast SEO, PDF, Data Transfers, CSV Export, CSV File Processing, Animation, Web Animation, Slider Design, Landing Pages, Landing Page Optimization, Web Development, Surveys, Forms, Keyword Analysis, SEO Keyword Research, Semrush, Ubersuggest, Competitor Analysis & Profiling, Website Ranking, Google, Google Rankings, HubSpot CRM, Websites

Frameworks

Divi, Bootstrap

MARCH 2023 - PRESENT

Certified HubSpot CMS Developer

HubSpot

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