Senior Software Engineer

Senior / Staff Software Engineer — AI Platform

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New York City | Full-time | On-site, five days per week

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Build the engineering foundations of an AI business with substantial venture backing, paying customers and a large market to pursue.

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Our client is an early-stage company developing AI software to automate complex financial operations. Backed by established venture investors and experienced technology and finance leaders, the business has secured multi-million-dollar funding and already generates millions in annual recurring revenue.

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The opportunity is to turn that early commercial traction into a platform capable of supporting much broader adoption—and help shape the architecture that gets it there.

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The opportunity

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You’ll own foundational systems used across the engineering team: agent infrastructure, orchestration, data services and the tooling needed to operate AI reliably in production.

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This is a hands-on role with meaningful architectural influence. You’ll work directly with founders and customers, translate difficult operational problems into reusable software, and see your decisions become part of the company’s core platform.

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What you’ll build

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• Agent frameworks, orchestration, verification and observability systems.
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• Data infrastructure that brings fragmented financial information into a reliable, consistent foundation.
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• Shared platform services and developer tools that help other engineers ship faster.
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• End-to-end product capabilities, extending into the frontend when needed.
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What we’re looking for

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• Strong Python backend or platform engineering experience, with a track record of building core infrastructure at scale.
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• Deep understanding of distributed systems and data infrastructure.
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• Personal ownership of a significant engineering project spanning teams and running successfully in production.
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• Confidence making architectural decisions with incomplete information and taking them through to delivery.
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• Ability to work across TypeScript and React when required, and communicate directly with customers.
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• Fluency with AI coding tools such as Cursor or Claude Code.
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• A Computer Science degree, or a related technical degree with substantial CS content, from a leading US computer science programme.
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Early-stage startup experience and exposure to financial systems, enterprise integrations or payments would be valuable.

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Stack: Python, TypeScript, React and AWS.

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Location: New York City, five days per week in the office.

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Visa support: OPT, H-1B transfers and H-1B sponsorship available.

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Apply to discuss the company, its backing and the scope of the role in confidence.