Full Stack Engineer

Job Description

Berkley Hunt is partnering with a well-funded, revenue-generating startup that has scaled from $0 to a multi-eight-figure run rate in months, building a product layer that turns fragmented, failure-prone enterprise work into software people can trust.

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They're hiring a Full-Stack Engineer (amongst other positions) to own hard customer and internal-team problems end-to-end, from the first product decision through reliable production systems, working across UX, frontend, backend, data, testing, and observability rather than a single layer of the stack. This is an onsite role based in New York.

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What You'll Do

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• Own ambiguous customer or internal-team problems from discovery through measurable production outcomes
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• Build coherent vertical slices across frontend, backend, workflow state, data, testing, observability, security, and release
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• Make complicated processes clear without hiding exceptions, uncertainty, or recovery paths
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• Diagnose difficult production behavior and remove recurring root causes
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• Establish useful measurements and improve customer, team, quality, or reliability outcomes
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• Create reusable product and engineering capabilities that make later work faster and safer
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• Use AI deeply in development and where it improves the product, with explicit evaluation and verification
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• Work directly with Product, Design, customers, domain experts, and other engineers
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What We're Looking For

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• At least 3 years of professional software engineering experience
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• A strong full-stack engineer with excellent product and UX judgment
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• Startup experience, comfortable with broad ownership, changing context, and building without fully specified requirements
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• A track record of owning ambiguous problems from discovery through implementation, production operation, and iteration
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• Able to reason carefully about state, data integrity, testing, security, observability, and recovery in complex workflows
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• Uses evidence to debug systems and measure whether work actually improved the outcome
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• Fluent with modern AI engineering tools, with the judgment to verify their output
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• Clear communicator across technical and customer-facing teams
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• Bonus: strong TypeScript, React, or Node.js experience; integration-heavy SaaS/API/OAuth/file -upload work; document workflows, internal tools, evaluation systems, or production diagnosis experience; experience building high-fidelity simulation/evaluation environments; multi-tenant or compliance-sensitive products; shipping trustworthy AI-assisted workflows
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Salary: $180,000 - $280,000 base, varying by seniority