Top SEO Agencies in California

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SEO United States California

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Top Featured SEO Agencies

Mixtazure
5
(3 reviews)
SEO agency from Cluj that implements the work on your site
Mixtazure is an SEO agency from Cluj-Napoca, founded in early 2023 by Patrik Rojan and Alexandru Drimba. Most of our clients are Romanian companies, and we also work with clients in other European and English-speaking countries. SEO is our core service. Around it we handle the work that rankings depend on: conversion rate optimization, UX/UI and web development. Clients include Ivatherm, Travelminit, Mobila Dalin, Bannersnack, ArtMedica and Allengra. The team brings more than 10 years of SEO experience and over 500 optimized websites. How we work 1. We implement the changes. We log into your CMS (WordPress, Shopify, Magento, Gomag, Wix), make the fixes, work with your developers and set up GA4, Search Console and Tag Manager. 2. You see what we did and why. Each report explains the change, the reason behind it and the result, in plain words. 3. The plan follows your site. Each month's work comes from what your site needs to rank and sell, so we do not sell a fixed number of articles or backlinks. 4. We test and adapt. We follow Google updates and AI search, test new methods, and keep the ones that bring traffic and sales. Services: technical SEO, on-page SEO, link building, local SEO, SEO for AI search (ChatGPT, Gemini, Google AI Overviews), SEO audits, tracking and reporting. Two formats: a monthly SEO retainer or a one-time implementation project. Ask for a free audit and we check first whether we can help your site.
4 works in SEO
Located in Cluj-Napoca, Romania
From €1,000 for SEO
Worked in Beauty (+2)
Speaks English, German(+2)
1-10 members
Delante SEO/SEM Agency
4.9
(122 reviews)
Delante: SEO, SEM & AI Search in one Search Agency - focused on results, growth, and business impact
Highly recommended
Top awarded
Delante is an award-winning international Search Agency specializing in SEO, SEM, and AISO (AI Search Optimization). With offices in Kraków, New York, London, Italy, Spain, we support global brands across 29 global markets. Our +65 experts create tailored strategies focused on business impact - not vanity metrics . We know that marketing has to pay off. That’s why we track ROI, ROAS, and CAC to ensure our clients’ investments generate measurable growth. From increasing visibility to scaling international sales, our result-oriented and data-driven approach makes us the trusted partner behind the success of global e-commerce and B2B leaders. Our strategies have earned us recognition from Top International Awards, including: 🏆 European Agency Awards 2026 Winner (Integrated Search Agency of the Year, Best Use of AI in a Client Campaign) 🏆 Forbes Diamonds 2025 🏆 Deloitte Technology Fast 50 Europe 🏆 Financial Times FT1000 🏆 Google Premier Partner - Top 3% of Agencies Worldwide 🌍 🏆 Global Search Awards 2024 - SEO Agency of the Year 🏆 European Search Awards 2024 🏆 Global Agency Awards 2024 - Best B2B SEO Agency of the Year 🏆 Global Digital Excellence Awards 2024 More visits, more sales - let’s get you in the lead! Forward is our only direction - because Delante means Forward. It’s our can-do-attitiude mindset.
9 works in SEO
Located in New York, United States (+3)
From €1,000 for SEO
Worked in Clothing & Accessories (+8)
Speaks English, Polish
51-200 members
Trendlix Digital Marketing Agency
5
(15 reviews)
Custom Digital Marketing Solutions According to Your Business Needs and Market Demand.
Recommended
Trendlix Digital Marketing Agency delivers custom digital marketing solutions tailored to your business needs. Our digital marketing services include SEO services, social media marketing, reel creation, web and app development, content creation, branding, and media production, all designed to increase online visibility, generate qualified leads, boost engagement, and drive measurable business growth.
6 works in SEO
Located in Nasr City, Egypt
From €800 for SEO
Worked in Energy & Oil (+27)
Speaks English, Arabic
11-50 members
Rex Automaton
(0 review)
We connect the software your business already runs and add AI where it saves real time.
Rex Automaton is an automation and AI studio in Vancouver and Edmonton, working with businesses across North America. Most of our work starts the same way. A company runs on an industry platform that was never built to talk to its other tools, and people copy data between them by hand. We connect those systems through their APIs, add AI where it pays for itself, and keep it running after launch. Recent work: - A call transcription pipeline for a 40 trader commodity firm. More than 39,000 calls written into their database with zero errors, all on their own hardware. - An AI voice agent that calls and books leads for a real estate brokerage. - AppFolio reporting pipelines that turn property data into monthly investor reports. - Document extraction that files receipts, invoices and bank statements into the ledger for an accounting firm. We scope in plain language and quote a fixed price before anything is built. Zapier Silver Solution Partner.
Looking for work in SEO
Located in Vancouver, Canada
From €1,000 for SEO
Worked in Home Services (+5)
Speaks English
1-10 members
Sellucent
5
(6 reviews)
Your Amazon Growth, Decoded - Amazon PPC & Optimisation for UK + international brands
Highly recommended
Sellucent is a London-based Amazon growth consultancy built by former sellers who got tired of watching strong brands leave money on the table. We combine advanced AI analytics with hands-on expertise to turn your Amazon data into clear, actionable strategies that deliver measurable results.Whether you’re launching your first products or scaling an established brand, we focus on what actually moves the needle: lower ACoS, higher ROAS, improved conversion rates, and sustainable, profitable growth across the UK, EU, and international marketplaces. Core services include: AI-powered precision PPC management and bid optimisation Amazon DSP and full-funnel advertising Listing optimisation, keyword research & A+ Content Creative development and brand storytelling Inventory planning, account strategy, and brand protection Every recommendation is data-backed. We operate with radical transparency — you see exactly what we do, why we do it, and how it ties to revenue outcomes. No vanity metrics, no black-box reporting. Our results speak for themselves: clients have achieved 180%+ revenue growth in months, dramatic ACoS reductions (e.g. 42% → 18%), and conversion rate lifts from low single digits to 5%+. We’ve managed hundreds of millions in Amazon revenue across thousands of brands.Sellucent is the agency we wished existed when we were sellers ourselves — one obsessed with performance, partnership, and long-term growth. We only win when you win.
4 works in SEO
Located in London, United Kingdom
From €2,000 for SEO
Worked in Beauty (+3)
Speaks English
11-50 members

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