Senior Fullstack Engineer (AI)

TL;DR

Senior Fullstack Engineer (AI): Build and operate customer-facing software across Prolific’s domains, with an accent on full-stack product engineering, distributed systems, and production reliability. Focus on translating business concepts into software models, delivering across shared codebases, and responding to incidents while collaborating closely with customers and cross-functional teams.

Location: Hybrid (San Francisco office, approx 1–2 days/week) — New York, United States; San Francisco, United States

Salary: $250,000–$300,000 per year (base)

Company

Prolific builds human data infrastructure that powers more accurate and aligned AI systems.

What you will do

• Develop and support full-stack product features across Prolific’s domains to solve customer problems.
• Translate business concepts into software models and deliver with high ownership and a product mindset.
• Work with both monolith and distributed systems, delivering across shared codebases to a high engineering standard.
• Collaborate directly with account managers, customer success specialists, and customers to understand problem spaces.
• Support systems in production and respond to incidents when required.
• Use and extend the engineering stack across web applications, APIs, databases, and cloud deployments.

Requirements

• 4+ years of experience in a product engineering role.
• Strong communication and collaboration skills for direct customer interaction.
• Experience building modern web applications and designing architecture patterns.
• Experience supporting applications in production environments.
• Comfort working across a broad domain surface area and adapting quickly.
• Hybrid role based out of the San Francisco office (approx 1–2 days/week).

Culture & Benefits

• High-ownership, startup-paced execution with scalable and reliable engineering expectations.
• Regular in-person collaboration with customers and the US team.
• Compensation includes base salary, equity, and benefits; some roles may include a variable cash component.
• Pay transparency: base salary range for this role in San Francisco is $250,000–$300,000 per annum.