Front-End Integrations Developer

At pmtbox (“Payment Box”) , we’re building a fintech platform that drives outcomes for clients around payments optimization, fraud, chargebacks/disputes, and related processes. We’re a VC-backed fintech with a small team, over 1,000 active clients, and big ambitions. We're growing quickly and are building a team of high-ownership operators who care deeply about doing great work.

As we scale, we’re looking for a Front-End Integrations Developer to help make pmtbox work seamlessly with the ecommerce platforms and payment infrastructure our clients already use.

This role sits at the intersection of ecommerce, payments, integrations, and front-end development . Initially, a major focus will be building integrations with third‑party ecommerce platforms such as Big Commerce, Magento, and Woo Commerce, as well as creating custom adapters that allow pmtbox to work with third‑party payment gateways and run our pre‑authorization checks during the transaction flow.

Over time, the role will expand further into the checkout experience itself—including plugins, embedded components, and eventually cart and checkout experiences that live directly on merchant websites.

pmtbox can create significantly more value for merchants when our technology is embedded directly into the systems where transactions originate.

Our clients use different ecommerce platforms, payment gateways, and technology stacks. We need someone who can bridge those environments with pmtbox—understanding how a merchant's checkout and payment flow works, identifying the right integration point, and building a clean, reliable way for our technology to operate inside it.

In the near term, that means building and maintaining integrations with platforms like Big Commerce, Magento, and Woo Commerce and developing adapters for third‑party gateways so transactions can interact with pmtbox before authorization.

Longer term, we're moving closer to the checkout itself. We expect to build plugins and components that allow pmtbox to evaluate information as the customer enters it—for example, using an email address or other checkout data to run checks immediately and determine whether a transaction presents elevated risk before it progresses further.

Eventually, that may include building more complete cart and checkout experiences that merchants can deploy directly on their sites.

We need an engineer who is excited by that progression.

• Front-end engineering with integration thinking. This isn't primarily about building static interfaces. The front end needs to communicate reliably with ecommerce platforms, payment gateways, APIs, and pmtbox services.
• Platform knowledge with adaptability. Big Commerce, Magento, Woo Commerce, and payment gateways all work differently. This person needs to be comfortable learning third-party systems and figuring out the cleanest way to integrate with them.
• Speed with reliability. We're a startup and need to move quickly, but these integrations sit directly in ecommerce and payment flows. Small mistakes can have real consequences.
• Merchant experience with technical constraints. The best integration isn't just technically functional—it should also be easy for a merchant to install, configure, understand, and maintain.
• Today's integrations with tomorrow's product. Some work will solve immediate client integration needs. Other work will become the foundation for reusable plugins, checkout components, and eventually larger pmtbox commerce experiences.

• Builds and maintains integrations between pmtbox and ecommerce platforms such as Big Commerce, Magento, and Woo Commerce.
• Builds custom adapters that connect third-party payment gateways to…