Full-service development
and support of payment gateways
for
We partner with banks, payment startups, crypto providers,
and businesses that want to power online payments through their own custom solution
Partner with a team you can trust to develop and grow your WooCommerce payment module
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Consulting
- Review your materials and run a project briefing
- Show practical examples of how we plan to bring your project to life
- Create a realistic roadmap — from MVP launch to scaling your product in the market
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Development
- We move fast — most projects are built and launched within just 2 weeks
- Your team will include seasoned leads and developers with experience delivering 100+ payment solutions
- We rely on proven workflows, ready-to-use frameworks, and deep knowledge of WooCommerce architecture — allowing us to move faster without sacrificing quality
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Integration and testing
- Test the connection between your API and the CMS, and help refine your business logic to ensure all payment scenarios are handled safely
- Check the module stability and highlight potential conflicts before they become issues
- If your API is still evolving, we’ll help stabilize it through real-world testing and feedback
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Release
- Prepare the module for releasing: upload the code, set up the module update process, and help to write descriptions
- Manage the release carefully, taking into account the readiness of your API and the platforms’ requirements
- Help you navigate all stages of plugin releasing on WordPress.org and Woo Marketplace without delays
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Support and growth
- Build support processes: track tasks in management systems, reserve developer time, and work through support packages
- Help your product grow: handling merchant requests, adding new features, and adapting the module to changes in WooCommerce
- Support your scaling: expanding your solutions to Shopify, Wix, OpenCart, and other platforms
WooCommerce: the perfect first step
for your payment gateway
An open source environment — no applications, no partner agreements, no special authorizations
WooCommerce is based on WordPress and it is a fully open system. WordPress marketplace does not require moderation and special approval for payment integrations like other platforms. WooCommerce has some requirements for partners, but it still saves months on launch and eliminates the risk of being rejected without explanation.
Flexibility and predictability
You can freely manage the checkout experience, apply custom styling, add JS scripts, and implement any custom logic. Whether it’s a redirect flow, embedded form, split payments, or other advanced scenarios — it’s all possible here.
Active community and clear documentation
WooCommerce offers case studies, templates, best practices, and examples — you’re never isolated. As contractors, we can quickly find solutions for rare cases, and later can maintain and expand the module.
Fast time to market
Thanks to the platform’s openness and straightforward integration, it is possible to release a working module within 2 weeks. And this isn’t just a technical demo — it’s a real launchpad where you can onboard clients, test hypotheses, gather feedback, while building your support and documentation processes.
Scalability without changing technology
Starting with WooCommerce gives you a solid foundation that’s easy to adapt to other CMSs like Shopify, Wix, or Magento. The payment logic and API, tested and proven on WooCommerce, make it much easier to expand your product in the future. WooCommerce acts as the ideal beta environment for validating your product with real users.
Expanding your solution to other CMSs
Building a roadmap for multi-platform
plugin development
Launch faster with expert guidance
and full support at every step
What we need to start development:
- API documentation or access to a draft version
- Contact with a technical specialist to clarify logic and specific cases
- Access to a sandbox environment or we can guide you on how to set one up
- Understanding of which platforms you want to launch first and how you plan to distribute the plugin to merchants
If your API is still in development, we can step in early and help adapt it to the requirements of WooCommerce and other CMSs.
We can handle the maintenance
and development of your WooCommerce payment gateway
Launching a payment module is just the beginning.
Once it’s out in the real world, the real work starts: installations grow, merchant requests come in, edge cases appear, WooCommerce rolls out updates — and support becomes critical.
This is where many providers face a challenge: support takes time, technical expertise, and consistency.
But maintaining an in-house team for a few bugs a month isn’t practical — and one-off contractors rarely stay engaged long enough to understand your product deeply.
You get fast, reliable support that’s
seamlessly integrated into your workflow
Here’s what we handle:
- Quick response to bugs, errors, and merchant questions
- Compatibility updates for new WooCommerce and API versions
- Adjustments for changing market and compliance requirements
- Seamless communication via Slack, Jira, or your ticket system — just like your internal team.
We know what it takes to support payment solutions: we’ve worked with advanced plugins used by hundreds of merchants, and we know how to build a support process that keeps your product stable and your team focused on growth.
You evolve the product. We ensure its stability.
We’ve developed 100+ payment gateways
and delivered over 2,000 technical support hours for our clients
OnePix — your payment gateway development expert team, right by your side
Fast and smooth onboarding
We join the project within 1–3 business days. While access is being set up, we’re already designing the product logic or taking on the first tickets. With ready-made templates, checklists, and a streamlined process, we don’t waste time “getting up to speed.”
No perfect brief? No problem
You don’t need polished documentation. An API or a rough description is enough — we’ll help structure it, advise on industry best practices, and build a working solution.
Think of us as your partner, not just another outsourced team
We are your second dev team. We dive in, suggest solutions, refine the product, and adapt to your system.
Full transparency and clear communication at every stage
You’re always in the loop — with reports, dashboards, and regular updates. We agree on timelines and priorities upfront, so nothing slips through the cracks.
Experienced in supporting high-load products
We’re used to merchant requests, urgent fixes, and unpredictable APIs. With hundreds of active installs behind us, we know how to keep support reliable and under control.
We don’t just fix bugs — we help your product grow
We support scale: to new CMSs, formats, and features based on real user feedback. No idle phases, just consistent progress.
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F.A.Q
How long does it take to develop a payment gateway?
It depends on the platform and the API readiness:
– A basic WooCommerce module typically takes 2 weeks
– Adding Woo Blocks support adds 5–7 days
– Integrations for Shopify, Wix, or Magento take longer due to closed APIs and approval processes — usually 3 to 5 weeks
Is plugin publishing and setup included in the base price?
Yes. Publishing and configuring the plugin on WordPress.org is included. We handle the upload, submission, and initial setup process.
Can the same plugin be published on both WordPress.org and the WooCommerce Marketplace?
No. The WooCommerce Marketplace requires exclusivity — a plugin listed there can’t be simultaneously available on WordPress.org. Typically, developers publish a free version on WordPress.org and a premium version on the Woo Marketplace.
What’s the difference between Woo Marketplace and WordPress.org?
Technically, it can be the same plugin — but the publishing process differs. On WordPress.org, publication is open to everyone. On Woo Marketplace, it requires a separate approval process, especially for payment gateways. WooCommerce hand-picks its partners, the process takes longer, and may involve a dedicated partnership agreement.
What are Woo Blocks, and do I need to support them?
Woo Blocks is WooCommerce’s new checkout system based on the Gutenberg editor. It’s gradually replacing the classic checkout and becoming the default. To work properly with Woo Blocks, your plugin needs an additional integration via Payments API v2. We offer Woo Blocks support as a standalone option or part of a long-term roadmap.
What security practices do you follow?
We follow WordPress best practices for secure development, including:
— Validation and sanitization of all incoming data
— Safe output handling (escaping)
— HTTPS-only connections
— Request signature and verification (e.g., for webhooks) using HMAC
Option to bind actions to specific domains to block unauthorized requests
We also run automated code checks via WordPress Code Sniffer.
Can we provide a code audit before publishing?
Yes. We’ll give your team access to the code and a summary of implemented security measures — so you can review everything before going live.
Can merchants use the same API key across different CMSs?
We don’t recommend it. Reusing one API key can lead to issues like duplicate orders if the same order_id appears across platforms. It’s best to use separate keys for each CMS.
Is a public API key required for redirect-based payments?
No. In a redirect-based flow, the public key is usually not needed. It’s only required if you’re using a JavaScript SDK and rendering the payment form on the client side.
Can payment providers track whether a client activates the plugin?
Not by default — but we can implement a custom solution, such as creating a callback endpoint on your server to log plugin activations.
How does the customer return to the store after payment?
It depends on the API, but in most cases, the site passes a return_url parameter when initiating the payment.
After payment, the customer is redirected to that URL.
You can also use:
— success_url for successful payments
— cancel_url for canceled ones
— notification_url (or callback_url) for receiving transaction status updates from the payment provider.
Do Apple Pay and Google Pay require separate setup when developing a plugin?
It depends on the payment flow:
— If you’re using a redirect (where the customer is taken to the provider’s payment page), Apple Pay and Google Pay are handled on the provider’s side — no extra work is needed in the plugin.
— If the payment is embedded directly into the site’s checkout (no redirect), support for these methods must be implemented in the plugin according to the provider’s API.
