b
bearius

Sergiusz S

@bearius

WordPress Developer, Custom Themes, Plugins and Migrations

Poland
English, Polish
About me
I build and maintain WordPress sites that handle serious traffic. For over 10 years I have been developing custom block themes and plugins for high-traffic news sites, so I know what breaks under load and how to prevent it. What I can do for you: - custom WordPress themes built from scratch - rebuilding Elementor or Divi sites into fast custom themes - custom plugins and AI integrations - site migrations between hosts - GDPR compliance setup Based in Poland (CET). Clear communication, clean code, no surprises.... Read more

Skills

b
bearius
Sergiusz S
Offline • 
Average response time: 8 hours

See my services

Help/Consultation
I will audit your wordpress site for security, performance and technical SEO
From$25 / projectMore details
Plugins Development
I will build a custom wordpress plugin with clean, secure and lightweight code
From$40 / projectMore details

Portfolio

Work experience

Self-Employed_/ Freelancer

Self-Employed / Freelancer

Full-time • 14 yrs 2 mos

Lead WordPress Developer & Head of Technology

Mar 2018 - Present • 8 yrs 7 mos

Since 2018 I have been Lead WordPress Developer at a Polish digital media company. Lead developer for a network of regional news sites running on WordPress. I designed and maintain the custom FSE block theme behind all of them, along with an ecosystem of in-house plugins. Key achievements: - Built a custom block theme focused on speed, with its own ad management system, Schema.org markup and Google News sitemap - Developed an event calendar that scales smoothly to 60,000+ events - Replaced several third-party plugins with lightweight in-house code - Set up a shared media library for multiple sites on Cloudflare R2 - Manage VPS servers (OVH, HestiaCP) and the Cloudflare stack (Workers, R2, Pages, caching) - Built AI integrations using LLM APIs

WordPress Developer

Jun 2012 - Jan 2018 • 5 yrs 7 mos

Built WordPress websites for small businesses and individual clients, from setup and theme customization to launch. This is where I learned to turn what a client describes into a site that actually works for them.