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Senior Software Engineer

Madrid🌐 Remote💼 Full-time💰 $140,000–$140,000🗓 2026-02-02 → 2026-09-23

Core

Building a high-performance frontend and SDK for a cross-chain decentralized exchange (DEX) that bridges EVM and non-EVM chains using MPC and secure enclaves.

Role type

Senior Software Engineer (Frontend & SDK)

Builds

A cross-chain DEX platform and developer SDK for DApps

Domain

Web3 / Decentralized Finance (DeFi) / Blockchain Infrastructure

Deliverable

product features

Required skills

React, Next.js, TypeScript, Xstate, Wagmi, React Native, UI/UX design, state machine architecture, performance optimization, observability

Preferred skills

Multi-party computation (MPC), chain signatures, secure enclaves, cross-platform development

Technologies

React, Next.js, TypeScript, Xstate, Wagmi, React Native

Responsibilities

Design intuitive interfaces for complex financial instruments; Optimize user interactions for millisecond-level performance; Design and implement resilient state machines for RFQ flows; Create a world-class SDK for DApp integration; Implement deep tracing and real-time observability

Seniority

Senior, hands-on IC

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