Senior Software Engineer, Frontend

Perpay Inc.; Philadelphia (Philadelphia County); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Premium medical benefits

Unlimited PTO policy

High quality catered lunch

Gym subsidy

Generous team member discounts

Job summary

A growth-stage financial startup in Philadelphia seeks a passionate Senior Frontend Engineer. This role requires strong skills in React and JavaScript, a focus on user experience, and a collaborative work style. You will lead technical design and implementation of frontend features, ensuring clean and maintainable code while mentoring other engineers. The company offers competitive compensation, premium benefits, and a vibrant team culture focused on making a positive impact.

Qualifications

• 5+ years of experience delivering commercial products to market.
• Significant experience with React and the React ecosystem.
• Strong knowledge of JavaScript, including the latest ECMAScript standards.

Responsibilities

• Collaborate closely with development team members to ensure excellent user experience.
• Write clean, efficient, and maintainable code.
• Ensure application responsiveness and accessibility across devices.

Skills

React

JavaScript

Frontend technology

UX/UI design

Cross-functional collaboration

Tools

Docker

AWS

Kubernetes

React Native

Job description

About Us:

Perpay is a certified B Corp and Philadelphia’s most impactful growth‑stage startup. We are driven by a mission to significantly improve the financial stability of everyday Americans. For the past decade, we have established strong product‑market fit and a profitable, efficient operating model across a suite of products, positioning Perpay as the premier financial partner for consumers with subprime credit. With over 500,000 customers who have utilized more than $1 billion in spending power, we are at a pivotal moment. We are scaling our operations, building new offerings, and deepening our impact. We are looking for teammates eager to join us on this journey. Our venture partners include First Round Capital and L Catterton. Products we’ve built to make an impact:

• Perpay Marketplace: Combines interest‑free payments and modern e‑commerce to reduce cost of ownership and promote healthy repayment behavior.
• Perpay+: Leverages Marketplace repayment history to help members monitor and build credit with all 3 credit bureaus.
• Perpay Credit Card: Expands access to the flexibility and benefits of a World Mastercard by removing common barriers like high security deposits and low approval odds.

Our team thrives on in‑person collaboration, operating from our unique center‑city Philadelphia office. This comfortable "home away from home" space offers river views and fosters rapid product development, strong relationships, and career growth. The energy from achieving big wins is palpable here. While we primarily work in the office, we offer sensible flexibility for personal needs, such as sick children or urgent errands, and coordinate official remote weeks around major holidays. If you are passionate about a meaningful mission, collaboration, equity, and generous perks, Perpay is the best place to be in Philadelphia right now.

About the Role

We are looking for senior frontend engineers passionate about frontend technology and excellent user experience. The ideal candidate has helped lead the technical design and implementation of frontend features on at least one sizable production application within the past year. A senior frontend engineer at Perpay will spend their time writing code, reviewing PRs, mentoring engineers, and helping scope & design new features. We are looking for people who can bring frontend technical expertise to push our technology forward — whether it’s hosting a lunch‑and‑learn on a new frontend technology or directing a large refactor. We value engineers who demonstrate excitement around solving tough problems and delivering solutions in a fast‑paced environment. Much of our team is fullstack, so we look for team members excited to learn new technologies and work across all stacks, even if it’s not something you’ve done before! Our tech stack: Javascript, React, React Native, Redux, Python, Django, Flask, Kubernetes, AWS, Docker and more.

Responsibilities

• Collaborate closely and communicate with other members of the development team, including UX designers, product managers, and other engineers, to ensure that the frontend meets the needs of the business and provides an excellent user experience
• Ensure our application is responsive and accessible across different devices and platforms
• Write clean, efficient, and maintainable code
• Contribute to the engineering design process by bringing forward tradeoffs and opinions on how to weigh them
• Leverage continued research around the changing frontend landscape to bring best practices and innovation to our code, developer experience, and user experience

What You’ll Bring

• 5+ years of experience delivering commercial products to market
• Significant experience with React and the React ecosystem and unidirectional data flow patterns, preferably Redux
• Strong knowledge of JavaScript, including the latest ECMAScript standards
• Understanding of RESTful APIs
• Experience with optimizing web applications for performance and accessibility
• Product focus and a passion for UX/UI design or familiarity with UX/UI principles
• Strong curiosity about industry trends
• Ability to pick up new technologies quickly, with software engineering best practices prioritized over familiarity with specific tools or languages
• History of cross‑functional collaboration on mission‑critical projects
• Experience with React Native, AWS, Docker, and Kubernetes is nice to have
• Experience standing up a design system is also a nice to have

Hey, we know not everybody checks all the boxes, so if you’re interested, please apply because you could be just what we’re looking for!

What We’ll Bring to Full‑time Team Members

• Meaningful compensation and equity
• Premium medical benefits (fully paid base plan, and very reasonable premium for the buy‑up option)
• 4% employer 401k match
• Unlimited PTO policy
• Remote weeks around major holidays + extra holiday on weekends like MDW and LDW
• High quality catered lunch by local chefs, 4 days / week
• Gym subsidy
• Paid cell phone + plan
• Student loan repayment program
• Relocation assistance
• Generous team member discounts

This is not a remote opportunity; it is 100% onsite.

Perpay is proud to be an equal opportunity employer. We value diversity in all its forms and are committed to creating an inclusive environment. We do not discriminate on the basis of race, religion, color, national origin, gender identity, sexual orientation, sex (including pregnancy), marital status, political affiliation, age, veteran status, disability status or other non‑merit factor. Please contact us at [e-mail] to request accommodation.