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Copyright 2010 - 2023 @ DevriX - All rights reserved.

The WordPress Retainers Agency.

DevriX coined “WordPress retainer” in 2015 and since then we've inspired thousands of agencies to follow in our footsteps. We build and maintain high-scale WordPress platforms up to 900M monthly page views.

DevriX partners up with our accounts and handles the entire technical stack while providing marketing and business consulting with ROI in mind.

If you are tired of constant patches, unreliable consultants, and micromanagement, we're the right match for you.

WordPress Development for the Enterprise

SaaS, Large Multisite platforms, Publishers, WooCommerce, CRMs, B2B Platforms


WordPress Retainer Explained

Building a reliable and scalable web platform is not a one-off project. DevriX profiles in establishing long-term WordPress development partnerships and scaling businesses “the agile way” with ROI in mind.

Get access to a diverse team of niche experts on a monthly basis depending on what you need. Our tech team works side by side with expert DevOps, UX, AdOps, Marketing, Creative and Project Management talents to boost your revenue and automate your processes.

The WordPress Retainer model allows us to combine back-end and front-end development with creative and marketing strategy. As a result, you delegate your technical needs completely and focus on business growth.

Dedicated to long-term results, our WordPress development agency provides technical partnerships for large multisite platforms, global publishers, eCommerce stores, SaaS, SMEs, and fast-growing startups. Let’s partner up – we will establish roadmaps and manage everything in-house.

Why WordPress Retainers?

WordPress Core Contributors

We don’t outsource people; we form flexible teams for you. Retainer plans leverage the right skills internally based on the stage of your platform every month. Design and UX phases will lean on more creative resources. Strategic planning will pull our growth consultants. Heavy development and migrations will be taken care of our tech squad. We assemble the resources one sprint at a time.

Agile WordPress Development

Waterfall is an outdated technique. Agile has been the leader in the past 20 years and the only reasonable approach for professional WordPress development. Prioritize business goals month by month by following a flexible workflow model. Our WordPress agency applies growth consulting best practices that work for the leading brands in the space – and you will reach that, too.

Business Strategy and Consulting

We’ve scaled over 15 businesses to 8 figures while supporting Fortune 1000s and some of the largest publishers on the planet. Our WordPress engineering workflow is aligned to marketing insights, modern project management principles, and scalability best practices. What differentiates us from other WordPress agencies out there? The WordPress retainer plans enables you to leverage our entire team focused on your business growth.

How It Works?

Delegate your technical needs completely and focus on business objectives.

As one of the top 10 full-service WordPress agencies on the market, we establish suitable workflows based on our client’s needs.

  1. Initiating a Kick-off Meeting

    We conduct a short discovery session to establish the short-term goals towards a successful minimum viable product.

  2. Planning The Sprints

    Our flexible agile model allows ongoing development, delivery, and flexible iterations for your project.

  3. Achieving Results

    Retainers get more successful with time. The longer we work together, the better we understand your business goals.

  4. Scaling Fast

    WordPress retainers enable us to deliver quickly through weekly sprints. Don’t get bogged down with complex roadmaps – move fast, experiment, iterate toward success.

Ongoing WordPress Development and Growth

Delegate your complete digital and WordPress development activities to a reliable partner and focus on growing your business.

This Is the Reason Why We Are Doing Our Job in the Best Possible Way

Looking for a WordPress development company providing long-term partnership?

Jon Reed


DevriX has been able to add sophisticated functionality to while maintaining a very high mobile-first design standard. That’s a tough balance to maintain. One remarkable thing: I have never met the DevriX team. We have never even spoken on the phone or VoIP. Another member of our team has spoken with them, but the point is I’ve been able to get projects done with DevriX that involved complex design requirements without ever talking real-time. That requires an exceptional attention to detail. I cannot recommend DevriX highly enough.

Adam Sewall

VP Marketing, Verkada

DevriX enabled us to deliver an entirely reimagined B2B website in under 3 weeks. From backend integrations to mobile layouts on the frontend, I was continually impressed with the team’s knowledge and, equally important, ability to think like a user. The engineers weren’t just completing deliverables — they were proactively suggesting solutions to our challenges, and filling in gaps where requirements were incomplete or unclear. Communication was clear and effective throughout the course of the project. Highly recommended for teams looking to move fast!

Stuard Frank

Mario and his team are flat out awesome. They’ve been able to handle the most difficult challenges we’ve thrown at them whilst all the time offering a level of expertise and command of their subject area way beyond that offered by your average freelancer or small agency. In fact, i’d wager you’d struggle to find such committed and skilled workers at this price point anywhere else, putting them easily on a par with some of the leading WordPress dev shops but at a fraction of the price. Whether you’re looking for a team to make your next big project a reality or to further develop or stregthen an existing project then you won’t be disappointed with what Mario and the devrix/ team have to offer. Get in contact with them today, youll be in good hands.

Kris Gunnars

Founder, AuthorityNutrition

Before I started working with DevriX, I was having severe stability problems with my high-traffic website that gets over 10 million visits per month. They helped me migrate the site to a new webhost and fixed some code issues. Since then I’ve had a near 100% uptime, with an even faster site than before. The team at DevriX is highly knowledgeable about WordPress coding best practices and they always focused on clean code and fast loading times. I highly recommend working with them if you have a WordPress website.

Tom Murray

Viral Lead Machine

Mario, Stanko and team are great to work with. We’ve worked with them on a number of complex, original applications, and can always count on them to bring extensive knowledge and skill to every project. They’re also very conscientious in their approach – always striving to build the most technically reliable solution. If you’re looking to create a robust software exactly to spec, then I’d highly recommend these guys!

Julius Solaris

Director, SocialCoup LTD

Working with Mario and his team has been a great pleasure. It is difficult to find reliable developers that actually understands WordPress Architecture while managing client communication professionally, Mario is one of the few of them. Definitely recommend.

All Hip Hop

Greg Watkins, founder of, shares valuable insights about his work experience with DevriX.

We established a strong working relationship with the company in 2020, which lead to us building their new arbitrage-based platform, creating a custom header-bidding stack to monetize paid traffic.

WordPress Agency for the Enterprise

Ongoing WordPress Development for businesses pushing the limits

For years we’ve been excelling at WordPress development and Growth strategies for large organizations, building custom-tailored solutions with stability, scalability, extensibility and security in mind.

Our experience with SaaS and Multisite web solutions and high traffic systems has shaped us to be precise and careful about the challenges of business growth.

All of our projects are built with growth in mind, and we work closely with our customers for long-term results, building additional features and enhancing the conversion rates by implementing technical, business and marketing practices.

Case Studies


Smart Meetings is a leading media company for professionals in the meetings industry.

We got in touch regarding a website migration from a custom platform built on top of Zend Framework to WordPress, rebuilding their theme to a responsive and clean layout, breaking their content down to over a dozen post types for different types of information, transferring their custom search tools to WordPress plugins and integrating several 3rd party systems. Our team broke down the migration script into multiple sequential iterations until the entire platform had been migrated.


100,000+ different
data entries

Various custom filters implementation

Obsev is a publishing site that hosts particularly viral entertainment and cultural commentary stories.

In November of 2018, they were doing significant traffic (30MM+ page views per month) and hitting a wall with scaling challenges. With these performance issues limiting their growth it was imperative that we get them through the wall and remove the scaling barrier that was capping their growth and damaging their brand. Fast forward to today and they’ve more than quadrupled the traffic levels that were hobbling the site before.


Impressive RPS

More than
quadrupled Traffic


Here is how WordPress retainers proved to be the optimal website redesign solutions.

Density is a B2B company which solution tracks anonymously how people use buildings and in-door spaces based on deep learning algorithms. Our task was to build a brand new corporate site used to present and sell the company's services and products and replace the one published on their domain at that time. Their current site was static and could not be updated easily but our team succeeded to launch the new site’s primary version within three weeks. Shortly after that we pushed live Webinars and Blog features, tasks like documents (PDF), more advanced work with Marketo forms, the Customers post type, and the Support page.

Corporate website development

From a static website to a WordPress CMS platform

Development work supporting the sales process


Kustomer is a customer service CRM platform built for managing high support volume by optimizing experiences.

Kustomer has been working with DevriX on a WordPress development retainer plan since August 2019. Our mutual work was focused on the marketing side: building better looking pages and fixing various visual imperfections throughout the site. This, together with general speed and codebase improvements, which were highly needed, were two of our top priorities.

Major speed improvements across the website

Thorough UI improvements

A gradual reworking of the previous codebase

Business Success Guides

Our WordPress business and growth tutorials

  • Business

    Content for Business owners
  • Marketing

    Tutorials for WordPress marketers
  • Development

    WordPress developers tips and tricks
  • News

    WordPress news by DevriX

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WordPress Development Contributions

Over 70,000 web development hours dedicated to making the WordPress Core better.

  • 565 Custom Plugins Developed
  • 50 Open Source Plugins
  • 104 Custom 3rd Party APIs Integrated
  • 10 Software as a Service Platforms
  • 11 WordPress Core Contributors
  • 13 WordPress Community Contributors

Your Long-Term WordPress Partner

Our first 2 Retainer clients signed in 2015 still grow successfully with us. Join the family today.