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About Polygon Labs

Polygon Labs is a software development company building and developing a network of aggregated blockchains via the Agglayer, secured by Ethereum. As public infrastructure, the Agglayer will bring together user bases and liquidity for any connected chain, and leverage Ethereum as a settlement layer. Polygon Labs has also contributed to the core development of several widely-adopted scaling protocols and tools for launching blockchains, including Agglayer CDK, Polygon PoS & Katana.

Your Role

As a founding Full Stack Engineer on the Polygon Fintech Labs team, you’ll work hand-in-hand with our Engineering Manager to build the core application layer for our next-generation fintech products. From day one, you’ll collaborate closely with product and design to architect and ship intuitive, high-impact features that deliver real-world financial utility to millions of users.

This role requires someone who thrives on crafting polished, performant frontend user experiences while also being comfortable building the backend services that power them. You’ll help simplify complex financial workflows — like payments, vaults, and programmable flows — into seamless, accessible products for everyday users.

If you care deeply about building beautiful, frictionless interfaces and are excited by the challenge of engineering high-quality production systems at scale, this is your chance to make an outsized impact.

Your Responsibilities

• Own key frontend experiences: Build clean, responsive, accessible interfaces that simplify complex financial functionality and delight users.

• Integrate third-party SDKs and APIs: Work with leading providers for onboarding, KYC/compliance flows, fiat on/off ramps, and payments.

• Contribute to robust backend infrastructure: Design and maintain services that support transaction execution, data flows, and secure user state.

• Collaborate cross-functionally: Work closely with product, design, and engineering peers to deliver end-to-end features with polish and performance.

• Architect for scale and security: Ensure the systems you build are performant, reliable, and meet the highest standards for security and quality.

• Iterate fast, ship often: Maintain high velocity while delivering production-quality, maintainable code.

What You’ll Need

• 4+ years of full stack engineering experience, ideally in fintech or API-driven environments.

• Strength in frontend development: Deep experience with modern frontend frameworks such as React, Next.js, or similar.

• Strong proficiency with TypeScript and backend frameworks like Node.js, NestJS, or similar.

• Hands-on experience integrating third-party SDKs/APIs (e.g., payments, identity verification, compliance).

• Solid knowledge of building secure, scalable backend services and RESTful APIs.

• Proven ability to write clean, maintainable, production-ready code in a fast-moving, collaborative environment.
  

Preferred Qualifications

• Experience building mobile-first, high-performance web applications.

• Background working in fintech or payments-related systems.

• Familiarity with security best practices around sensitive user data and financial transactions.

• Strong understanding of designing and optimizing frontend performance and UX for complex workflows.

Polygon Labs Perks

The goal of the Polygon Labs total rewards program is to support the health and well-being of you and your family. Our comprehensive compensation plan includes the following benefits for our full time employees:

• Remote first global workforce

• Industry leading Medical, Dental and Vision health insurance

• Company matching 401k with 3% match

• $1,500 Home Office Set Up Allowance (life-time max)

• $200 Annual Book Allowance Program

• $75 Monthly internet or phone reimbursement

• Flexible Time Off

• 1 company wide wellness Friday day off per quarter

• Company issued laptop

• Egg freezing, mental health, and employee wellness benefits

In certain countries medical, dental and vision is fully covered for employees & their dependents. This is country and plan specific.

401k is for United States employees only

Polygon Labs is committed to a diverse and inclusive workplace and is an equal opportunity employer. We do not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status. Polygon Labs is committed to treating all people in a way that allows them to maintain their dignity and independence. We believe in integration and equal opportunity. Accommodations are available throughout the recruitment process and applicants with a disability may request to be accommodated throughout the recruitment process. We will work with all applicants to accommodate their individual accessibility needs.

If you think you have what it takes, but don't necessarily meet every single point on the job description, please still get in touch. We'd love to have a chat and see if you could be a great fit.

Learn More about Polygon Labs

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