Conversion Optimization Specialist & Full-Stack Developer

Always questioning the world around me, I enjoy reading fat books, playing guitar, listening to music, and working out. Used to live in the World of Warcraft as a teenager, defeating the Lich King with the guild <Digital Crew> that I led. I hold a bachelors degree in Software Engineering and have been working with global brands for the past nine years.

Links:

Contact:

filiporastovic@gmail.com

About

I specialize in helping e-commerce businesses and startups achieve measurable growth through a unique combination of conversion rate optimization (CRO), user-centered design, and tailored development solutions. With years of experience working with global brands and ambitious startups, I focus on improving user experiences, optimizing key metrics, and delivering scalable, impactful results.


 

Past Clients:

Google, Johnsons & Johnsons, Tipalti, Treedom, Wholesome Goods, Thinkcube Solutions…and 60 more.

Technical Expertise

With a strong foundation in software engineering and hands-on expertise across both backend and frontend development, my skillset includes:

  • E-commerce Platforms: Custom Shopify and WordPress development, plugin and theme creation, and advanced integrations.

  • Frameworks: Proficient in Laravel and the TALL stack (Tailwind, Alpine.js, Laravel, Livewire) for building scalable web applications.

  • Split Testing & Analytics: Implementing A/B testing infrastructures and leveraging data insights to improve conversion rates.

  • Infrastructure Scaling: Ensuring reliability and performance for high-traffic applications through optimized hosting and infrastructure design.
 

 

Fractional CTO Services For startups and businesses without a technical founder, I bridge the gap between development and business needs. My services include:

  • E-commerce Optimization: Custom Shopify and WordPress development, plugin and theme creation, advanced integrations, and CRO-focused design.

  • Data-Driven Strategies: Implementing A/B testing infrastructures, analyzing user behavior, and leveraging insights to drive higher conversion rates.

  • Full-Stack Development: Proficiency in Laravel and the TALL stack (Tailwind, Alpine.js, Laravel, Livewire) to build responsive, scalable applications.

  • Performance Optimization: Ensuring high-traffic platforms remain reliable and fast through efficient hosting, infrastructure design, and code optimization.

 

Driving E-Commerce Success

I’ve helped e-commerce companies boost key performance metrics like Conversion Rates, AOV (Average Order Value), and LTV (Lifetime Value) while reducing CAC (Customer Acquisition Costs). My approach consistently delivers:

  • High-Converting User Experiences: Through iterative design, split testing, and CRO-focused development.
  • Efficient Funnels: By identifying and reducing friction points in user journeys.
  • Scalable Solutions: Tailored platforms that adapt to business growth and changing needs.

 

How I Work

I combine technical expertise, creativity, and a deep understanding of user psychology to deliver results that go beyond surface-level improvements. My process includes:

  • Landing Page Optimization: Designing and developing pages that maximize conversions.
  • Custom Development: Building tailored Shopify and WordPress themes, plugins, and integrations.
  • Data Insights: Leveraging analytics to make informed decisions and prioritize impactful changes.
  • Ongoing Optimization: Continuously monitoring and refining to ensure consistent success

Mentions in Media (Mostly Serbian)

Cool Pictures

About The Images

I rendered these images in Cinema 4D using Octane Render from 2020-2023. I was really obsessed with 3d art back then. I’m very proud that both Google and Microsoft reached out to do 3D work for them. However I don’t do much 3D these days.

The 3D models in images above are mostly downloaded high quality assets, put in a procedurally generated background setting.

The lighting & compositions, my favourite topics, are very traditional in every image. I’m trying to highlight form of the objects, lighting one half and leaving the other one in shadow.

You can download my stuff for free! If you print it, shoot me a message, I want to see how it looks on your wall! There’s much more on the blog below.