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Senior Web3 Frontend Engineer

LI.FI is simplifying multi-chain DeFi for traditional financial institutions, fintechs and service providers by offering a unified API to access all on-chain liquidity across major blockchains for best price same-chain and cross-chain swaps. We are a passionate team on a mission to enable a fairer, more decentralised world. Apart from the tech, we care a lot about user experience and aim to make complex technologies accessible to everyone.

Setting yourself up for success

  • Take a moment to read the job description before applying. We want to make sure this role is the right fit for you, so you don't spend time on an application that isn’t aligned with your experience. If this one doesn't quite match, we encourage you to submit your resume to our talent pool!

  • Focus on your application, there's no need to reach out to team members directly. We review all applications thoroughly, so rest assured your submission will be carefully considered! If you have questions about which role might be the best fit for you, feel free to reach out to career@li.finance.

  • To apply, please submit your resume detailing your relevant experiences and competencies. We love to see how your work has made a difference—whether it’s improving processes, increasing efficiency, or leading a project to success, so be sure to highlight this in your resume!

A quick run-down of the job

We are seeking a skilled and experienced Senior Frontend Engineer to join our team. The ideal candidate is a senior developer with a strong background in React development. The role involves building innovative, high-quality frontend solutions with a strong focus on SDK and widget development, shaping user interactions and enhancing API usability.

Please note that you must be located in the EMEA or LATAM regions. Your application will not be considered if you're outside of this region.

Our current stack:

Our team prides itself on harnessing cutting-edge technologies and versions from React:

  • TypeScript, JavaScript

  • React 18/19

  • MUI

  • Vitest

  • Figma

What you’ll do

  • Develop and maintain LI.FI SDK, LI.FI Widget and other supporting libraries and UI components, focusing on user-friendly interfaces and functionality.

  • Support and improve library APIs, ensuring they’re robust, elegant, documented, and easy to use.

  • Contribute to open-source projects and maintain public repositories, enhancing visibility and impact within the developer community.

  • Implement and maintain automated tests to ensure the reliability and scalability of frontend components.

  • Work with Ethereum Improvement Proposals (EIPs), specifically those involving account abstraction and wallet connectivity, to stay ahead of evolving Web3 standards.

  • Collaborate closely with cross-functional teams to align frontend solutions with backend architecture and overall project goals.

What makes a good candidate

If you thrive in fast-paced environments, are driven by curiosity, eager to learn and grow, and ready to take ownership of your work, we’d love to hear from you!

  • Must be proficient in JavaScript and TypeScript.

  • 8+ years of experience as a frontend engineer, with a focus on React development.

  • Previous experience in Web3 development (Viem, Wagmi, @solana/web3.js) is a must.

  • Experience with MUI and Figma, demonstrating the ability to create responsive and visually appealing interfaces.

  • Strong attention to detail when implementing designs and writing frontend code.

  • Understanding of various Ethereum Improvement Proposals (EIPs) and other advancements in the Web3 development ecosystem are appreciated.

  • Excellent communication and teamwork abilities.

  • Open-source contributions and/or maintained repositories are strongly appreciated.

  • A Bachelor’s degree or higher in Computer Science or a related field is a plus.

We encourage you to apply if you feel your experience and skills equip you for this job but are not listed here!

Company culture

  • Embracing the differences

    • Embrace your own differences

    • Respect and welcome the unique qualities of others

    • See others’ differences as an opportunity to grow

  • Own it, do it

    • Own tasks end-to-end

    • Hold yourself to a high bar for execution

    • Make bold decisions, and be accountable

    • Understand your limitations and seek for help

  • Fail forward

    • Try - don’t be afraid to fail

    • Learn - don’t make the same mistake twice

    • Adapt - grow with the experience

  • Have fun together

    • Take the time to get to know and understand each other better

    • Don’t take yourself too seriously and keep it light-hearted

    • Fun should be coming from a place of love and respect

What you’ll get

  • Annual team offsites (Thailand in 2023 and Vietnam in 2024 were a blast, Marrakech in March 2025 was blast-ier; let’s see what happens in 2026!)

  • 30 days of PTO

  • Flexible remote days

  • Flexible working hours

  • Equity participation from day 1

  • Entitlement to work computer (choice of equipment)

  • 1 Conference per year near your city of residence

  • An annual 1,000€ personal development budget once you have worked 6+ months (pro-rated the first year)

  • A one-time 1,000€ remote budget to use on coworking, office setup, etc.

If you join us as an independent contractor, you’re only entitled to the first five benefits of this list.

Application process

Setting yourself up for success starts with the application! Click here to discover valuable tips that will help you navigate our application process effectively.

LI.FI is an equal opportunity employer. We encourage individuals of all backgrounds to apply. Join us in our dedication to fostering a workplace that values and respects each team member's unique contributions..

Shortlisted candidates will undergo a comprehensive interview process, including a people operations interview, a take-home assignment, a meet-the-team & founder interview, and a reference check.

For more information, visit our page detailing our hiring process!

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What You Should Know About Senior Web3 Frontend Engineer, LI.FI

Are you a skilled Senior Web3 Frontend Engineer looking to make your mark in the DeFi world? Join us at LI.FI, where we're revolutionizing multi-chain DeFi for traditional financial institutions and fintechs. Our dedicated team is not just about technology; we are on a mission to create a more decentralized future where complex tech is accessible to everyone. In this role, you will leverage your expertise in React to develop innovative SDKs, widgets, and UI components that enhance user experience and API usability. With a tech stack that includes TypeScript, React 18/19, and MUI, you'll be at the forefront of cutting-edge technologies. You'll collaborate with cross-functional teams, contribute to open-source projects, and stay aligned with the latest Web3 standards through Ethereum Improvement Proposals. If you have a solid background in JavaScript, TypeScript, and Web3 development, along with a strong attention to detail, we want to hear from you! At LI.FI, you’ll enjoy flexible working hours, remote options, and the chance to attend exciting team offsites. Don't miss this opportunity to bring your passion for frontend engineering to a company that values innovation and fun. Join us in redefining finance while enjoying a rewarding career!

Frequently Asked Questions (FAQs) for Senior Web3 Frontend Engineer Role at LI.FI
What are the primary responsibilities of a Senior Web3 Frontend Engineer at LI.FI?

As a Senior Web3 Frontend Engineer at LI.FI, you will develop and maintain our LI.FI SDK and Widget, improve library APIs, and work on innovative frontend solutions with a focus on user experience. You will also implement automated tests, collaborate with other teams to align frontend and backend architectures, and contribute to open-source projects.

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What qualifications are needed for a Senior Web3 Frontend Engineer at LI.FI?

Candidates applying for the Senior Web3 Frontend Engineer role at LI.FI should have at least 8 years of frontend engineer experience with a strong concentration on React development. Proficiency in JavaScript and TypeScript, previous Web3 development experience, and familiarity with tools like MUI and Figma are also essential.

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How does LI.FI ensure a positive work culture for Senior Web3 Frontend Engineers?

At LI.FI, we embrace diversity and encourage individual differences, viewing them as opportunities for growth. We foster a culture of ownership and accountability, promote learning from failures, and prioritize having fun together, ensuring our Senior Web3 Frontend Engineers work in an engaging and supportive environment.

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What is the application process for the Senior Web3 Frontend Engineer position at LI.FI?

The application process for the Senior Web3 Frontend Engineer position at LI.FI involves submitting your resume, which should highlight your relevant experience and accomplishments. Following the initial review, shortlisted candidates will go through interviews that include a take-home assignment and meet-the-team sessions, ensuring a comprehensive evaluation of your fit for the role.

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What benefits does LI.FI offer to Senior Web3 Frontend Engineers?

Senior Web3 Frontend Engineers at LI.FI enjoy a variety of benefits such as flexible working hours, remote work options, 30 days of PTO, equity participation, and generous personal development and remote budgets. We also prioritize team bonding through annual offsites in exciting locations!

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Common Interview Questions for Senior Web3 Frontend Engineer
Can you explain your experience with React and how it applies to the Senior Web3 Frontend Engineer role?

When answering this question, highlight specific projects where you utilized React, focusing on the challenges faced and solutions provided. Emphasize your proficiency in the latest React versions and how your experience aligns with LI.FI's focus on user-friendly frontend solutions.

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What is your approach to developing and maintaining APIs for frontend applications?

Share your methodology for designing robust APIs, focusing on documentation, usability, and performance. Discuss past experiences where you improved API functionalities or streamlined communication between frontend and backend teams, and relate these to LI.FI’s API enhancement goals.

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Have you contributed to any open-source projects, and how do you feel about community collaboration?

Discuss specific open-source projects you have contributed to, explaining your role and the impact of your contributions. Highlight the importance of community collaboration in the Web3 space and how your experiences align with LI.FI’s dedication to open-source initiatives.

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How do you ensure the reliability and scalability of frontend components?

Explain your experience with automated testing frameworks, CI/CD processes, and your approach to performance optimization. Provide examples of how you have implemented these strategies in past roles, and relate them to the expectations at LI.FI for maintaining high-quality frontend systems.

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What is your experience with TypeScript, and how does it enhance your development process?

Discuss how TypeScript improves code quality through type safety, enhancing maintainability and reducing errors in large codebases. Share specific instances where using TypeScript provided significant benefits during your development work, particularly in a Web3 context.

Join Rise to see the full answer
Can you discuss your understanding of Ethereum Improvement Proposals (EIPs)?

Provide an overview of what EIPs are and discuss specific proposals you are familiar with, particularly those relevant to account abstraction and wallet connectivity. Describe how staying updated with EIPs can help in aligning development efforts with industry standards, especially for a role at LI.FI.

Join Rise to see the full answer
How do you manage tight deadlines and fast-paced projects?

Explain your time management strategies, including prioritization techniques and effective communication with team members. Use examples from past experiences to illustrate how you’ve successfully delivered projects under pressure while maintaining code quality.

Join Rise to see the full answer
What tools do you prefer for designing user-friendly interfaces, and why?

Discuss your experience with tools like Figma and others that aid in the design process. Describe how these tools help create responsive and visually appealing interfaces and how they could benefit the development efforts at LI.FI.

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Describe a challenging project you've worked on and the technologies you used.

Share a specific example of a challenging project related to frontend development. Explain the technologies used, your role in the project, the challenges faced, and how your efforts contributed to the project's success, reflecting qualities that LI.FI values.

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How do you stay updated with the latest frontend technologies and trends?

Discuss your strategies for continuous learning, including attending conferences, following industry leaders, and working on personal projects. Highlight how keeping abreast of early-stage frontend technologies like Web3 relates directly to your passion for the Senior Web3 Frontend Engineer position at LI.FI.

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DATE POSTED
April 18, 2025

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