In this role, the Staff Frontend Engineer will own checkout and payment flows, optimize user experiences, and collaborate with teams to improve performance and conversion rates.
Are you passionate about solving complex challenges in the fintech space? We’re looking for talented individuals to join our dynamic startup, backed by Sequoia Capital. We’re building the universal payment layer to unify all currencies—fiat and crypto—so businesses and consumers can transact seamlessly. If you're passionate about creating innovative solutions in a dynamic, fast-paced environment, we want to talk to you.
Are you passionate about solving complex challenges in the fintech space? We’re looking for a Staff Frontend Engineer (Payments & Checkout) to join our dynamic startup, backed by Sequoia Capital. We’re building the universal payment layer to unify all currencies - fiat and crypto - so businesses and consumers can transact seamlessly.
In this role, you’ll own and evolve our checkout and payment experience - the most critical surface of our product. You’ll work closely with product, design, growth, and backend teams to build fast, seamless, and high-converting payment flows. From reducing friction to improving authorization rates, your work will directly impact revenue and user experience. If you thrive on optimizing user journeys and love building performant, elegant frontend systems, we’d love to chat.
What You’ll Do:- Checkout ownership - Own the end-to-end frontend architecture for our checkout and payment flows across web platforms
- Conversion optimization - Improve checkout conversion rates through UX improvements, performance tuning, and data-driven experimentation
- Experimentation - Partner with product and growth to run A/B tests, analyze funnel performance, and ship iterative improvements quickly
- Payment UX - Build seamless flows for complex payment states including retries, failures, and authentication (3DS, etc.)
- Performance - Optimize frontend performance (Core Web Vitals, latency, rendering) to ensure fast and reliable checkout experiences
- Integration - Collaborate with backend and payments teams to integrate APIs, PSPs, and orchestration layers
- Resilience - Build robust UI systems that gracefully handle edge cases and ensure high reliability during transactions
- Frontend standards - Define and drive best practices for frontend architecture, scalability, and maintainability
- Mentorship - Act as a technical leader and mentor, raising the bar across the frontend team
- Culture carrier - Bring strong product thinking and a conversion-focused mindset into engineering decisions
- 7+ years of frontend engineering experience, ideally in fast-paced or startup environments
- Deep hands-on experience building and optimizing checkout or payment flows (must-have)
- Strong proficiency in modern frontend frameworks (React, Next.js, etc.)
- Experience improving conversion rates through experimentation, analytics, and UX iteration
- Strong understanding of frontend performance optimization and rendering strategies
- Familiarity with payments infrastructure (Stripe, Adyen, Braintree, tokenization, 3DS, etc.)
- Strong product intuition and ability to translate data into user experience improvements
- Excellent collaboration and communication skills across product, design, and growth teams
- Experience with global payments, multi-currency flows, or crypto is a bonus
- Fast-paced and dynamic – We’re a growing startup that moves quickly
- Tech-driven – We leverage technology to address our users’ biggest challenges
- Ownership and communication – We value people who take full ownership and communicate well across teams
- Continuous learning – You’ll work alongside industry experts and deepen your expertise in payments and high-performance frontend systems
- Competitive salary + equity plan
- 21 days PTO
- Benefits: annual medical allowance, productivity budget, gym membership & wellness subsidy
- Annual team retreat trip
- Be part of a team backed by Sequoia Capital with a healthy runway
- 7+ years of experience in frontend engineering, with a focus on high-impact user-facing systems
- Proficient in modern frontend frameworks and performance optimization techniques
- Experience with experimentation, analytics, and conversion-focused development
- Strong understanding of building reliable, scalable UI systems
- Bachelor's degree or equivalent practical experience
- We are unable to sponsor visas at this time.
- Preferred: Ability to work hybrid in NYC; open to remote candidates for the right individual
Apply now and help us build the future of payments at a global scale!
Apply now and help us build the future of payments at a global scale!
Similar Jobs
Fintech • Information Technology • Payments • Sharing Economy • Financial Services • Cryptocurrency
Lead product manager driving FedNow adoption across OBO service providers, fintechs, corporates, and BaaS banks. Develop targeted value propositions, evaluate customer pain points and market fit, lead discovery and delivery with design and engineering, build business cases, and collaborate with risk, legal, operations, and marketing to prioritize roadmap and accelerate instant payments adoption.
Top Skills:
APIsDeveloper PlatformsFedachFedlineFednowFedwire
.jpg)
AdTech • Cloud • Marketing Tech • Productivity • Software • Analytics • Automation
Design, build, and ship production-grade agentic AI workflows using LangGraph, Temporal, and Pydantic. Implement AI observability with LangFuse, set AI engineering standards (RAG, prompt management, tool-calling), benchmark LLMs, deploy cloud AI (containerization, cost management), and mentor engineers while supporting enterprise SLA, security, and compliance needs.
Top Skills:
AWSAzureCrewaiEmbedding ModelsGCPLangchainLangfuseLanggraphLlamaindexPydanticPythonRagTemporalVector Databases
Fintech • Financial Services
Supports daily branch operations including administrative coordination, ensuring policy compliance, cash/logistics support, assisting with reporting, scheduling, and liaising between customers and internal teams.
What you need to know about the San Francisco Tech Scene
San Francisco and the surrounding Bay Area attracts more startup funding than any other region in the world. Home to Stanford University and UC Berkeley, leading VC firms and several of the world’s most valuable companies, the Bay Area is the place to go for anyone looking to make it big in the tech industry. That said, San Francisco has a lot to offer beyond technology thanks to a thriving art and music scene, excellent food and a short drive to several of the country’s most beautiful recreational areas.
Key Facts About San Francisco Tech
- Number of Tech Workers: 365,500; 13.9% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Google, Apple, Salesforce, Meta
- Key Industries: Artificial intelligence, cloud computing, fintech, consumer technology, software
- Funding Landscape: $50.5 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Sequoia Capital, Andreessen Horowitz, Bessemer Venture Partners, Greylock Partners, Khosla Ventures, Kleiner Perkins
- Research Centers and Universities: Stanford University; University of California, Berkeley; University of San Francisco; Santa Clara University; Ames Research Center; Center for AI Safety; California Institute for Regenerative Medicine
