# Senior Software Engineer, Full-Stack

**Company:** [Payabli](https://hotfix.jobs/companies/payabli)
**Location:** Remote
**Role:** Fullstack Engineering
**Experience:** 5+ years
**Skills:** React, TypeScript, Node.js, CSS, Redux, Zustand, APIs, JavaScript
**Posted:** 2026-04-07

> Senior full-stack engineer builds and maintains frontend applications, embeddable UI components, and payment interfaces for fintech platforms. Requires 5+ years experience with React, TypeScript, Node.js, strong CSS, API integration, and state management.

## Job Description

## What You'll Do
- Build the product people touch. Design, develop, and maintain the frontend applications and reusable component libraries that power Payabli’s, and its partners, platforms.
- Ship embeddable experiences. Build hosted payment forms, white-label components, and drop-in UI that third-party platforms integrated directly with their own products. Your code needs to be lean, flexible and rock-solid as it will be running inside other people’s software.
- Bridge frontend and backend. Collaborate closely with other service owning teams to integrate via APIs and real-time data streams, ensuring seamless data flow across the stack & overall platform
- Raise the bar. Lead code reviews, champion frontend standards, and drive architectural decisions that keep the codebase healthy as we scale.
- Multiply the team. Mentor engineers around you and elevate frontend engineering quality across the organization through pairing, documentation and leading by example.
- Own the full lifecycle. Work across requirements, implementation, testing, and deployment. We don’t throw things over the wall here.
- Sweat the details. Optimize for performance, accessibility, and cross-browser compatibility.

## What We're Looking For
- 5+ years of professional frontend engineering experience. You've shipped real products to real users.
- **React, Typescript and Node.js** You don’t just use React, you understand its rendering model, know when to reach for which patterns, and can reason about performance at the component level.
- Strong understanding of **CSS** and responsive design. You can build pixel-perfect, accessible interfaces without leaning on a framework for everything.
- **API** integration experience. You’ve shipped products that rely upon APIs from multiple services and know to gracefully handle loading states, errors, and edge cases.
- State management chops. Experience with **Redux, Zustand**, or similar frameworks. You have strong opinions on what is the right tool when.
- Strong communicator. You enjoy walking your partners (design, PM, other engineers, leadership) through technical trade-offs.
- Security awareness. Web security principles (**XSS, CSRF, CSP**, etc.) and build with them in mind from step on.

## Nice to Haves
- A degree in Computer Science, or related field (or equivalent experience – we care more about how you operate and what you can build).
- Prior experience in fintech or payments technology. Especially as it relates to good payments UX: checkout flows, merchant onboarding, reconciliation dashboards, or similar financial interfaces.
- Experience building embeddable or white-label UI components. Bonus points if you’ve dealt with **CSS** isolation, versioning and cross-origin challenges.

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