Senior Software Engineer (SDK / Frontend), $200k-$280k base, Remote, Blockchain, DEX, Typescript, UI/UX, React, Next.JS

Senior Software Engineer (SDK / Frontend), $200k-$280k base, Remote, Blockchain, DEX, Typescript, UI/UX, React, Next.JS

We’re working with a well-funded, fast-scaling team building next-generation infrastructure for cross-chain execution, connecting AI agents, services, and financial applications across blockchain networks.

They’re looking for a Senior Software Engineer to help build a blazing-fast frontend and developer SDK for a cross-chain DEX. This role sits at the intersection of product, developer experience, and complex blockchain infrastructure, focused on making advanced financial systems simple and intuitive to use.

What you’ll be doing

• Building and optimising a high-performance frontend for a cross-chain DEX

• Developing a best-in-class SDK for external developers to integrate and build on top

• Designing clean, intuitive user experiences for complex financial workflows

• Working closely with protocol, backend, and design teams to bridge product and engineering

• Implementing observability and tracing across user journeys and interactions

• Building resilient state machines to manage RFQs and execution flows

What they’re looking for

• Strong experience with TypeScript and modern frontend frameworks (React, Next.js)

• Proven track record shipping high-quality products end-to-end

• Strong eye for UI/UX and product detail

• Experience building platforms, SDKs, or developer tooling

• Comfortable working across frontend and backend when needed

• Familiarity with crypto, DeFi, or blockchain technologies

Nice to have

• Experience with wagmi, XState, or similar tooling

• Exposure to cross-chain systems or DEX infrastructure

• Experience building mobile or multi-platform applications