A quick run-down of the job

We’re looking for a Senior Frontend Engineer to join our Perps / Orderbook squad.

At LI.FI, we build infrastructure that connects users to liquidity across chains. Our Hyperliquid integration powers seamless onboarding into perpetual trading, allowing users to bridge assets, swap tokens, and deposit collateral directly into Hyperliquid markets.

In this role, you’ll build high-performance DeFi interfaces and liquidity onboarding flows that connect users to decentralized perpetual futures exchanges (like Hyperliquid, Lighter, etc). This includes cross-chain bridging, swaps, and deposit flows powered by LI.FI infrastructure, enabling seamless access to decentralized perpetual trading.

Please note: you must be located in EMEA or LATAM.

Our stack

• Node.js

• TypeScript

• React

• Tailwind CSS

• MUI

• Zustand

• TanStack Query

• viem/wagmi

• Vite

• Vitest

What you’ll do

• Build and maintain DeFi interfaces and integrations powered by LI.FI infrastructure.

• Develop cross-chain user flows including bridging, swapping, and routing assets across multiple chains.

• Implement onboarding experiences that connect users to decentralized perpetual future exchanges, such as Hyperliquid, enabling seamless asset movement and liquidity access.

• Integrate frontend applications with LI.FI APIs, SDK, and widget.

• Build data-rich interfaces that surface routing options, transaction status, and cross-chain execution details.

• Collaborate closely with backend, product, and design teams to design robust cross-chain user experiences.

• Ensure performance, reliability, and maintainability through testing, debugging, and optimization.

• Contribute to frontend architecture and reusable UI components used across LI.FI products and integrations.

What makes a good candidate

We’re looking for engineers who are comfortable building complex frontend systems in fast-moving environments.The current UX is mobile-focused, but the product is expanding to a multi-device experience with a rich full desktop design.

Requirements

• 6+ years of frontend engineering experience

• Strong experience with React and TypeScript

• Experience building complex, data-heavy user interfaces

• Previous experience working with DeFi applications, crypto infrastructure, or Web3 products

• Understanding of perpetual futures trading infrastructure, with exposure to venues such as Hyperliquid, Lighter, Extended, or similar DeFi/CEX derivatives platforms.

• Experience working with real-time data (WebSockets or streaming systems)

• Strong understanding of API integrations and frontend architecture

• Ability to translate designs from Figma into polished interfaces

• Strong communication and collaboration skills

Nice to have

• Experience building cross-chain or multi-chain DeFi applications

• Experience with bridging, swaps, or liquidity routing systems

• Open-source contributions or maintained public repositories

If your experience doesn’t perfectly match the description but you’re excited about building high-performance crypto trading interfaces, we’d still love to hear from you

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)

• 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.