Available to hire
Hi, I’m Mario Rendić, a full-stack web developer with 15+ years of experience specializing in WordPress and WooCommerce. I design and build custom themes and plugins, convert design files (Figma, Sketch, Adobe XD) into responsive, optimized websites, and integrate REST APIs to extend functionality. I enjoy collaborating with agencies and clients to deliver high-quality projects under tight deadlines while keeping performance and security in mind.
Around code, I’m passionate about clean, efficient solutions, scalable architecture, and thoughtful UI/UX. I’ve helped teams launch and maintain WordPress-based stores and web apps, manage deployment pipelines, and provide ongoing optimization for speed, SEO, and reliability. When I’m not coding, I stay curious about new tools and design trends to keep projects fresh and future-proof.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Language
English
Fluent
Croatian
Fluent
Work Experience
Full-Stack Web Developer & Designer at SsAgency (Self-Employed)
October 1, 2014 - PresentDesigned and developed 50+ WordPress/WooCommerce websites for clients in retail, automotive, media, and hospitality. Built custom plugins and themes, including multi-currency and multilingual solutions. Converted design files (PSD, Figma, Sketch) into responsive WordPress themes. Integrated REST APIs and third-party services to extend functionality. Optimized website speed, performance, and security. Collaborated with agencies on overflow projects, meeting tight deadlines.
Web Designer/Developer & Graphic Designer at Direct Shopping d.o.o.
September 30, 2014 - September 8, 2025Designed and developed websites, marketing materials, and graphics; managed system and network administration.
Company Procurator & Web/Graphic Designer at Vita Natura d.o.o.
August 31, 2012 - September 8, 2025Assisted CEO as procurator; designed and developed websites, managed system administration, and created marketing materials.
System & Network Administration (Freelance) at Medical University Split
January 1, 2008 - December 31, 2008Freelance system and network administration for university projects.
Graphic Designer & System Administrator at Bio Pharma Ljepota d.o.o.
December 31, 2007 - September 8, 2025Designed marketing materials and websites; managed system administration.
Graphic Designer & System Administrator at Vitkost d.o.o.
December 31, 2005 - September 8, 2025Graphic design and system administration for multiple projects.
Web Designer/Developer & Customer Support at Castel IT
January 1, 2003 - November 30, 2004Web design/development and customer support.
Full-Stack Web Developer & Designer at SsAgency
October 1, 2014 - PresentDesigned and developed 50+ WordPress/WooCommerce websites for clients in retail, automotive, media, and hospitality. Built custom plugins and themes, including multi-currency and multilingual solutions. Converted design files (PSD, Figma, Sketch) into responsive WordPress themes. Integrated REST APIs and third-party services to extend functionality. Optimized website speed, performance, and security. Collaborated with agencies as a reliable developer for overflow projects, meeting tight deadlines.
Web Designer/Developer & Graphic Designer at Direct Shopping d.o.o.
September 30, 2014 - September 23, 2025Designed and developed websites, marketing materials, and press products. Managed system and network administration.
Company Procurator & Web/Graphic Designer at Vita Natura d.o.o.
August 31, 2012 - September 23, 2025Assisted CEO as company procurator. Designed and developed websites, managed system administration, and created marketing materials.
System & Network Administration (Freelance) at Medical University Split
December 31, 2008 - September 23, 2025Freelance system and network administration tasks.
Graphic Design & System Administration at Bio Pharma Ljepota d.o.o.
December 31, 2007 - September 23, 2025Graphic design work and system administration.
Graphic Design & System Administration at Vitkost d.o.o.
December 31, 2005 - September 23, 2025Graphic design and system administration.
Web Designer/Developer & Customer Support at Castel IT
December 31, 2004 - September 23, 2025Web design/development and customer support.
Full-Stack Web Developer & Designer at SsAgency (Self-Employed)
October 1, 2014 - PresentDesigned and developed 50+ WordPress/WooCommerce websites for clients in retail, automotive, media, and hospitality. Built custom plugins and themes, including multi-currency and multilingual solutions. Converted PSD, Figma, and Sketch designs into responsive WordPress themes. Integrated REST APIs and third-party services to extend functionality. Optimized website speed, performance, and security. Collaborated with agencies as a reliable developer for overflow projects, meeting tight deadlines.
Web Designer/Developer & Graphic Designer at Direct Shopping d.o.o.
September 1, 2014 - September 23, 2025Designed and developed websites, marketing materials, and press products. Managed system and network administration.
Company Procurator & Web/Graphic Designer at Vita Natura d.o.o.
August 1, 2012 - September 23, 2025Assisted CEO as company procurator. Designed and developed websites, managed system administration, and created marketing materials.
System & Network Administrator at Freelance / Medical University Split
December 31, 2008 - September 23, 2025Provided system and network administration for university projects.
Graphic Designer & System Administrator at Bio Pharma Ljepota d.o.o.
December 31, 2007 - September 23, 2025Graphic design and system administration.
Education
Front-End Web Developer Nanodegree at Udacity
January 1, 2018 - December 31, 2018SSS Technical School at Split, Croatia
January 1, 1999 - January 1, 2002Google AdWords Certificate at Google
January 1, 2014 - September 30, 2014Front-End Web Developer Nanodegree at Udacity
January 1, 2018 - September 23, 2025Google AdWords Certificate at Google
January 1, 2014 - September 23, 2025SSS Technical School at Split, Croatia
January 1, 1999 - December 31, 2002Front-End Web Developer Nanodegree at Udacity
January 1, 2018 - January 1, 2018Google AdWords Certificate at Google
January 1, 2014 - January 1, 2014SSS Technical School Diploma at SSS Technical School, Split, Croatia
January 1, 1999 - January 1, 2002Qualifications
Front-End Web Developer Nanodegree
January 1, 2018 - December 31, 2018Google AdWords Certification
January 1, 2014 - September 8, 2014Google AdWords Certificate
January 1, 2014 - September 23, 2025Front-End Web Developer Nanodegree
January 1, 2018 - September 23, 2025Google AdWords Certificate
January 1, 2014 - January 1, 2014Industry Experience
Media & Entertainment, Education, Software & Internet, Retail, Government, Professional Services, Travel & Hospitality
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Hire a Web Developer
We have the best web developer experts on Twine. Hire a web developer in Zagreb today.