Front-End Integrations Developer

The posting, as Pmtbox wrote it

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 BigCommerce, Magento, and WooCommerce, 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.

Why this role exists
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 BigCommerce, Magento, and WooCommerce 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.
What this person has to balance

• 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. BigCommerce, Magento, WooCommerce, 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 quick

[…]
risk products, or fintech.

• Experience building ecommerce plugins, extensions, apps, or embedded checkout components.
• Experience working with pre-authorization, fraud screening, or other real-time transaction decisioning.
• Experience turning custom client integrations into reusable productized integrations.

How we'll evaluate candidates

• Technical conversation focused on integrations and front-end architecture—how you've connected systems before, how you approach unfamiliar APIs, and how you debug problems that cross multiple systems.
• Relevant project discussion where you'll walk us through something you've actually built, including the technical decisions you made and problems you encountered.
• Practical conversation with members of our engineering team centered around a realistic integration problem. We're more interested in how you think and work through ambiguity than in algorithm trivia.

Why Join pmtbox

• Early-stage fintech with real momentum and VC backing by Tandem Ventures (founders behind fintech unicorns including Divvy and Finicity)
• Small team, high ownership
• Work on meaningful ecommerce and payments infrastructure
• Build integrations that sit directly in real-world transaction flows
• Opportunity to help shape pmtbox's future checkout and commerce technology
• Build alongside founders and experienced operators
• In-office culture in Orem, Utah, with Wednesdays as work from home
• Competitive compensation and benefits package including enterprise-level medical, dental, vision, 401(k), and generous time off

We’re looking for builders. If you want a highly structured environment where every integration has already been mapped out and every ticket tells you exactly what to build, this probably isn’t the right fit.
If you like figuring out how systems work, connecting things that weren't originally designed to work together, and building infrastructure that can eventually become a product in its own right, we'd love to meet you.