Founding Senior Full-Stack Engineer

Founding Senior Full-Stack Engineer (AI & Growth Infrastructure)

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Location: New York City (Hybrid, 4 Days Onsite)Compensation: $175,000-$225,000 + Meaningful Equity (1%+)Experience: 5-8 YearsEmployment Type: Full-Time
About the OpportunityWe're partnering with a venture-backed AI startup that is transforming how consumer brands operate and grow. The company is building an AI-powered platform designed to act as an operational layer across the entire business, helping brands identify what truly drives revenue, eliminate inefficiencies, and automate critical decision-making.
Having already achieved strong early customer traction and significant measurable impact for clients, the business is experiencing rapid growth and is now looking to hire its second engineering leader to help scale both the platform and the company.
This is a rare opportunity to join at a foundational stage, work directly with the founding team, and play a major role in shaping product direction, engineering culture, and technical architecture.
The RoleAs a Founding Senior Engineer, you'll serve as a hands-on technical leader responsible for designing and building the core systems powering the platform. You'll work across backend infrastructure, data systems, AI-enabled automation, integrations, and product development.This is a player-coach position ideal for someone who still loves writing code every day while helping establish engineering best practices and mentoring future hires.
What You'll Be Working OnBuilding scalable data infrastructure capable of tracking and analyzing millions of customer and business eventsDesigning systems that connect actions, outcomes, and commercial performance across customer lifecyclesDeveloping agentic AI workflows that can evaluate business performance, recommend optimizations, and execute actions autonomouslyOwning backend architecture, APIs, infrastructure, and product functionality from concept to productionBuilding and maintaining integrations with major commerce, marketing, and advertising platformsScaling systems to support a rapidly growing customer baseCollaborating closely with founders on product strategy and technical roadmapHelping establish the engineering culture, development processes, and technical standards as the company grows
What We're Looking For (Required)5+ years of professional software engineering experienceStrong full-stack development background, with particular strength in backend systems and infrastructureExperience building and shipping production-grade products in fast-paced startup environmentsProven ability to own projects from architecture through deployment and maintenanceStrong proficiency with TypeScript and/or PythonExperience working with APIs, integrations, and distributed systemsAbility to operate independently with high ownership and urgency
Nice to HaveExperience building AI/LLM-powered products and workflowsExperience with data engineering, event-driven systems, or analytics platformsEcommerce, growth technology, or marketing technology experienceFamiliarity with advertising platform APIs and marketing xzbcwsv automation systemsPrevious experience as an early-stage or founding engineerExperience mentoring engineers or leading technical initiatives
Tech StackTypeScriptPythonLarge Language Models (LLMs)ShopifyMarketing & Advertising Platform APIsData Infrastructure & Analytics SystemsWorkflow Automation & Agentic AI
Why Join?Founding-level opportunity with significant ownership and influenceMeaningful equity packageDirect access to founders and product strategyOpportunity to shape the technical foundation of a rapidly growing businessWork on cutting-edge AI applications with real-world commercial impactSmall, high-performing team where every hire has outsized influenceStrong trajectory toward the next stage of company growth
If you're excited by the idea of building AI-powered systems from the ground up, enjoy high-ownership environments, and want to help define the future of how businesses are operated, we'd love to hear from you.