Full-Stack Product Engineer

Sunset • New York, NY

9d

About The Position

At its core, Sunset was founded to help founders. We started by supporting startups through shutting down, but we have since expanded into unlocking a new revenue stream for all types of businesses. In 2025, we had a unique insight: the data every company generates each day through collaboration, communication, and building is some of the most valuable training data in the world. Public and synthetic data can only get frontier models so far, so the next generation of model progress depends on real, proprietary data grounded in how actual businesses operate. We are a primary source of it, partnering directly with the frontier AI labs building what comes next.

We have scaled from $0 to a multi-eight-figure run rate in a matter of months. We have raised from top-tier investors, including Floodgate, Afore, Ludlow, and Hustle Fund. We are small enough that you will carry outsized responsibility and grow as quickly as the company does. You will partner with and build for some of the fastest and most important companies in the world. You will help build a massive, category-defining business from the ground floor.

We're hiring full-stack product engineers to own hard customer problems from the first product decision through reliable production systems. You will work across UX, frontend, backend, data, testing, observability, and iteration—not simply one layer of the stack. We have opportunities across three connected product areas: acquiring internal enterprise work data from the systems where it lives, guiding companies through dissolution, and building the product layer around a de-identification pipeline that makes sensitive data safe and useful. You do not need prior experience in these domains. Each opening is tied to a real area of ownership, and we will be clear early in the process about which current opening appears most relevant to your experience.

Requirements

• At least three years of professional software engineering experience
• Strong full-stack engineer with excellent product and UX judgment
• Worked in a startup and enjoy broad ownership, changing context, and building without fully specified requirements
• Owned ambiguous problems from discovery through implementation, production operation, and iteration
• Can make complex workflows clear while reasoning carefully about state, data integrity, testing, security, observability, and recovery
• Use evidence to debug systems and measure whether your work improved the outcome
• Use modern AI engineering tools fluently, verify their output, and understand how to evaluate AI product behavior
• Communicate clearly across technical and customer-facing teams

Nice To Haves

• Strong TypeScript, React, Node.js, or comparable full-stack experience
• Experience with integration-heavy SaaS, APIs, OAuth, uploads, files, or asynchronous workflows
• Experience with document workflows, internal tools, evaluation systems, data quality, or production diagnosis
• Experience building high-fidelity, resettable simulation or evaluation environments using synthetic data, seeded failure modes, multi-step state, and programmatic verifiers to test data or AI systems
• Experience with multi-tenant, compliance-sensitive, or otherwise high-trust products
• Experience shipping trustworthy AI-assisted workflows

Responsibilities

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

Benefits

• We have scaled from $0 to a multi-eight-figure run rate in a matter of months
• We have raised from top-tier investors, including Floodgate, Afore, Ludlow, and Hustle Fund
• We are small enough that you will carry outsized responsibility and grow as quickly as the company does
• You will partner with and build for some of the fastest and most important companies in the world
• You will help build a massive, category-defining business from the ground floor

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed