What is a Technical SEO Freelancer? A Technical SEO Freelancer is a specialist who optimizes the technical backbone of websites so search engines can crawl, index, and understand content as efficiently as possible. Without strong technical foundations, even the best‑written content and most attractive designs will struggle to rank in organic search and AI‑driven discovery platforms.
Technical SEO Freelancer case studies
Across the globe, businesses that invest in technical SEO early see faster indexing, higher rankings, and stronger organic growth than those that wait. The following examples illustrate how deep technical work can transform visibility and performance, even when competition is intense.
Case study: Oz Global B2B, published October 2023
Page Health from 48 to 95
A B2B software company increased its page health score from 48 to 95 and Page Authority from 17 to 29 through focused technical and on‑page optimization, resulting in significantly higher organic traffic and conversion rates.
Case study: Concurate, published December 2025
E‑commerce site health uplift
An e‑commerce site improved its site health from 73 to 89 by fixing URL inconsistencies, metadata issues, and broken links, which unlocked better indexing and higher rankings for key product pages.
Case study: RevenueZen Fitness Platform, published June 2025
216% increase in keyword rankings
A fitness platform grew its keyword coverage by 216% over six months through basic technical SEO fixes, which translated into 83% higher organic traffic value and stronger revenue performance.
Alex Costin as a Technical SEO Freelancer
Alex Costin brings over two decades of hands‑on experience in digital marketing, combining technical web development, data‑driven SEO, and multi‑channel strategy. Transferred from London UK, where marketing standards are among the highest in the world, he now operates from Barcelona, delivering world‑class technical SEO services to English, Italian, Spanish, and French‑speaking audiences worldwide.
- Full‑stack technical expertise: Alex is proficient in HTML, CSS, Drupal, and Bootstrap development, which allows him to build and optimize websites from the ground up for maximum performance and SEO compliance.
- Data‑driven SEO strategy: He leverages Google Marketing Platform, Microsoft Advertising, Adobe Experience Cloud, and analytics environments to turn raw data into actionable insights that improve rankings and conversions.
- Automation and tag management: Using Google Tag Manager and advanced automation he implements robust tracking, conversion measurement, and event‑based optimizations that keep campaigns aligned with business goals.
- Server, code, and schema mastery: From server‑level optimization to schema markup and code validation, Alex ensures every layer of the site is engineered for both search engines and real‑world users.
- Guaranteed results culture: By focusing on measurable outcomes—traffic growth, ranking improvements, and conversion uplift—he builds programs that consistently outperform generic agency “packages” and deliver real ROI.
Hire a top Technical SEO Freelancer in Barcelona
Prices start at just £1000 per day. With Alex Costin’s combination of AI‑driven workflows and advanced technical skills, one day of focused work can easily match or exceed the output of five days from a traditional marketing agency.
Technical SEO Freelancer excellence
Landing page quality refers to how well a page is built technically, structured semantically, and rendered for users and search engines. It encompasses fast loading times, clean markup, correct schema, mobile responsiveness, and clear hierarchy, all of which determine whether Google and AI‑powered search systems can understand and rank the page effectively.
High landing page quality is crucial because search engines prioritize pages that load quickly, are easy to navigate, and provide a smooth user experience. When your technical SEO is strong, your pages move faster into top positions, enjoy higher click‑through rates, and generate more qualified traffic and conversions.
You can see examples of this excellence in action by reviewing the PageSpeed Insights scores for alexcostin.com, alexcostin.com/plato, and alexcostin.com/deceneus, where each site achieves a perfect 100/100 in Performance, Accessibility, Best Practices, and SEO. These scores demonstrate how a technically flawless build can set your brand apart from competitors still relying on generic WordPress templates and outdated architectures.
Hire Alex Costin as your business Technical SEO Freelancer
Market Research
The data‑driven approach Alex uses allows businesses to investigate both primary and secondary data, turning raw metrics into strategic insights. This helps you uncover market gaps, competitor weaknesses, and untapped keyword opportunities long before your rivals can react.
Website Development
With Alex, you can receive a fully custom website delivered in just two weeks, built on a new server using Drupal and Bootstrap. Designed for a 100/100 PageSpeed Score from day one, this technical foundation lets you outperform local, regional, and national competitors who rely on slow WordPress templates and legacy stacks.
SEO
Through precise keyword research and maximum landing page quality, Alex helps your business dominate search engine rankings. His evergreen backlink network includes 5000+ blog posts and another 5000+ from partner sites, giving your brand an off‑page advantage few UK or European agencies can match.
Artificial Intelligence
Alex Costin uses AI to generate high‑quality content and automate social media campaigns, cutting down on time‑consuming manual tasks. This reduces the need to hire additional staff or third‑party agencies, letting you scale content and engagement at a fraction of the usual cost.
Performance
Weekly performance reports provide a clear view of how your campaigns are evolving. Alex reviews traffic, rankings, and conversions, then compiles a list of potential improvements, discusses them with your decision makers, and implements the changes—creating a continuous loop that steadily increases ROI over time.
Technical SEO Freelancer summary
Working with Alex Costin as your Technical SEO Freelancer means getting a world‑class strategist who combines London‑grade marketing expertise with Barcelona’s innovation‑driven environment. You benefit from lightning‑fast websites, 100/100 PageSpeed Scores, AI‑assisted content, and an ever‑green backlink network that helps your business rank higher and convert better across English, Italian, Spanish, and French markets.
Start your technical SEO transformation
Want results that outpace your competition and outshine generic agencies? Get in touch with Alex Costin today and start building a technically superior online presence that ranks in both traditional search engines and AI‑driven discovery platforms.