Senior Full-Stack Builder & AI Product Architect

Katapult Labs; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

23 Days PTO per Year

Monthly Payment in USD

USA Federal Holidays

Contractor Agreement with No End Date

Work from Anywhere in LATAM

Job summary

Katapult Labs in LATAM seeks a Senior Full-Stack Builder who owns product vision across architecture, backend, frontend, mobile and UX, working directly with US clients.

This role rewards autonomous, proactive builders who translate fuzzy conversations into scalable systems, reason about access control and integrations, and communicate clearly with stakeholders and AI agents to scale impact.

Qualifications

• Fluent English required for product and architecture discussions with US clients.
• Solid full stack experience (backend + frontend); mobile or micro-frontend a plus.
• Track record turning fuzzy product conversations into working architecture.
• Real seniority: capable of running engagements solo when needed.
• Experience working with clients or stakeholders in startups or product consulting.
• Comfort with using AI tools as a core part of daily workflow.

Responsibilities

• Design and build product end-to-end alongside the client: architecture, data model, integrations, and the final interface, always with an eye on the bigger picture.
• Work in lean teams, typically 2-3 people, with direct client exposure and no manager absorbing communications.
• Translate ambiguous business needs into a clear, executable technical plan, and argue for the why behind your decisions.
• Provide proactive updates and push back on scope early to prevent trust issues with the client.
• Use AI tools (Claude and Claude Design) daily to accelerate work; Katapult covers top-tier tooling.
• Co-create with the client rather than simply taking orders; help shape product decisions.

Skills

Fluent English

Full stack experience

Client-facing communication

Senior independence

AI tooling in workflow

Tools

Claude AI

Claude Design

Job description

Katapult Labs in LATAM seeks a Senior Full-Stack Builder who owns product vision across architecture, backend, frontend, mobile and UX, working directly with US clients.

This role rewards autonomous, proactive builders who translate fuzzy conversations into scalable systems, reason about access control and integrations, and communicate clearly with stakeholders and AI agents to scale impact.