Senior Full Stack Engineer – Checkout

LI.FI

Senior Full-Stack Engineer overseeing backend integrations for LI.FI's Checkout product in the EMEA region. Collaborating with multiple teams to enhance funding flows and provider integrations.

Posted 5/26/2026full-timeRemote • 🇪🇺 Anywhere in EuropeSenior💰 €90,000 - €130,000 per yearWebsite

Tech Stack

Tools & technologies

JavaScriptNode.jsTypeScriptWeb3

About the role

Key responsibilities & impact

Own Checkout-specific backend capabilities that power funding flows end to end
Design and build integration patterns for external providers
Define and maintain backend contracts between Checkout UI, provider systems
Drive cross-functional technical discovery when Checkout depends on Core backend
Implement frontend work where useful

Requirements

What you’ll need

Strong backend engineering experience with expert proficiency in TypeScript/Node.js
Proven experience integrating external APIs with provider-specific edge cases
Working-level Web3 knowledge
Strong product judgement and ability to navigate multiple teams
Excellent communication skills in English

Benefits

Comp & perks

Annual team offsites (Thailand in 2023, Vietnam in 2024, Marrakech in 2025, Crete 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.

ATS Keywords

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Hard Skills & Tools

TypeScriptNode.jsbackend engineeringAPI integrationWeb3

Soft Skills

product judgementcommunication skills