Description
Appcharge is a leading direct-to-consumer platform for app publishers.
We help publishers sell digital goods directly to their users - bypassing traditional app store commissions and owning the full payment and commerce experience.
The result: higher margins, better flexibility, and a more direct relationship with end users.
Backed by $89M from leading investors and operators, we’ve grown 14x in the past year and now process over a billion dollars annually. We’re building the infrastructure that lets modern app businesses take back control of monetization – at scale.
As a Senior Frontend Engineer on the Payments Platform team, you will play a key role in building scalable, high-performance frontend infrastructure and user experiences that power payment flows for global merchants.
You’ll work closely with product managers, designers, backend engineers, and customer-facing teams to create reliable, elegant, and developer-friendly solutions used across multiple products and integrations.
This role combines strong product thinking with engineering excellence — from building reusable UI systems and SDKs to optimizing performance, reliability, and scalability across our platform.
We’re looking for someone who thrives in a fast-moving remote environment, takes ownership end-to-end, communicates clearly, and can independently drive projects from concept to production.
Responsibilities
- Design and develop scalable, performant, and maintainable frontend applications using React, TypeScript, and modern web technologies.
- Build reusable UI components, shared libraries, and SDKs that support multiple products and integrations.
- Collaborate closely with Product, Design, Backend, and Customer-facing teams to deliver intuitive and reliable user experiences.
- Own features end-to-end — from technical planning and architecture through implementation, testing, deployment, and monitoring.
- Optimize application performance, responsiveness, and reliability across devices and browsers.
- Ensure high engineering standards through code reviews, testing, documentation, and observability.
- Publish and manage SDK and NPM package versions, including backward compatibility and release management.
- Help improve development workflows, tooling, and engineering best practices across the frontend ecosystem.
- Contribute to building a strong engineering culture focused on quality, ownership, collaboration, and continuous improvement.
Requirements
- 5+ years of experience building modern web applications.
- Strong proficiency in React, TypeScript, JavaScript, HTML, and CSS.
- Experience designing and maintaining reusable frontend architectures, component libraries, or SDKs.
- Experience managing NPM packages, versioning, and release processes.
- Strong understanding of frontend performance optimization and modern browser behavior.
- Experience working with APIs and complex asynchronous flows.
- Familiarity with server-side rendering frameworks such as Next.js — advantage.
- Familiarity with additional frontend frameworks (Angular, Vue, etc.) — advantage.
- Experience building and maintaining frontend integrations with global payment platforms (e.g., Adyen, Stripe, Nuvei), including hosted components, wallets, and alternative payment methods — advantage.
- Experience with cloud environments and CDN infrastructure (AWS preferred).
- Experience working in production-scale environments with high reliability requirements — advantage.
Soft Skills
- Strong ownership mindset with the ability to independently drive initiatives in a remote environment.
- Ability to balance speed, quality, and pragmatism in a fast-paced startup culture.
- Strong collaboration skills across Engineering, Product, and Design teams.
- Proactive problem-solver with a high attention to detail.
- Comfortable working asynchronously across teams and time zones.
