Senior Developer (TypeScript + Node.js) — Fintech - 100% Remote

At this company, everyone in tech carries the "Tech Generalist" title on purpose: no one is only frontend, only backend, or only data. Every engineer has a specialization but works across the stack. Engineers pick up projects end-to-end and rotate between initiatives rather than staying in silos.
We are actively looking for this hire to be an AI Builder — someone who has genuinely adopted AI in their daily engineering workflow and can become an internal reference across the team.

? What you'll do

Design, develop, and maintain end-to-end systems (frontend and backend) — supporting customer-facing workflows and internal backoffice operations.
Evolve the architecture for scalability, reliability, and security, making pragmatic tradeoffs between speed and long-term maintainability.
Design and maintain the platform's core financial systems: payment orchestration, ledger infrastructure, underwriting engines, reconciliation pipelines, and real-time deal tracking. Business-critical with strong guarantees on correctness,



traceability, and auditability.
Integrate third-party financial APIs (Taktile, Modern Treasury, Kantox) to automate data ingestion, risk evaluation, and cash movement workflows.
Raise the team's bar through thoughtful system design, high-quality code reviews, and mentorship — including acting as an internal reference on AI-assisted engineering.

✅ Must-have
5+ years shipping production-scale software
Strong proficiency in TypeScript and Node.js.
Systems thinker: sees patterns across the stack, designs solutions that scale beyond a single use case.
AI-native engineer — actively builds with AI tools (Claude Code, Cursor, Codex or similar) and can articulate how and why.
Pragmatic and business-impact oriented, balancing quality, speed, and simplicity.
Comfortable in a remote-first, distributed environment with full ownership.
Fluent English (working language of the team).

? Nice to have
Experie

📌 Staff Fullstack Developer (España)
🏢 Shakers
📍 España