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Senior Software Engineer, Full Stack jobs in United States
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Payabli · 1 week ago

Senior Software Engineer, Full Stack

Payabli is a next-generation Payments Infrastructure and Monetization Platform purpose-built for vertical software companies. As a Senior Software Engineer, Full-Stack at Payabli, you’ll own the interfaces that sit between complex financial infrastructure and the humans who use it every day, working at the intersection of product, design, and backend engineering to ship a UI that is fast, bulletproof, and genuinely pleasant to use.
SoftwareFinanceFinTechPaymentsDeveloper APIsFinancial Services
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H1B Sponsor Likelynote

Responsibilities

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

Qualification

ReactTypescriptC#CSSResponsive DesignAPI IntegrationReduxZustandWeb Security Principles XSSWeb Security Principles CSRFWeb Security Principles CSP

Required

5+ years of professional frontend engineering experience. You've shipped real products to real users
React, Typescript and C# 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

Preferred

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

Benefits

Competitive salary
Stock options with the potential to unlock more equity as we grow
Flexible PTO and paid parental leave
Medical, dental, & vision insurance
401K, HSA, pre-tax savings programs

Company

Payabli

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Payabli is a payments infrastructure and monetization platform that helps software companies integrate payments into their business models.

H1B Sponsorship

Payabli has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
50%
Represents job field similar to this job
Engineering and Development
Product Management
Trends of Total Sponsorships
*2026 (1)
2023 (1)

Funding

Current Stage
Growth Stage
Total Funding
$68.05M
Key Investors
Huntington National BankFika Ventures,QED InvestorsQED Investors
2026-02-17Corporate Round
2025-06-17Series B· $36M
2024-06-25Series A· $20M

Leadership Team

J
Joseph Phillips
Co-Founder
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William Corbera
Product Architect
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Company data provided by crunchbase