Founding Full-Stack Engineer: AI-Powered, Hybrid NYC, Equity

Jack; New York (NY); Hybrid; USD 160,000 - 220,000; Full time

Benefits offered by this job

Health insurance

Equity package

Hybrid work in NYC

Job summary

Jack in New York is seeking a software engineer to build and ship full-stack product features from concept through production. You will design scalable backend systems, APIs, and event-driven workflows, and develop customer-facing applications and internal tools.

You’ll integrate with third-party platforms, improve reliability, and collaborate closely with customers in a fast-paced startup. Join a high-ownership culture with direct impact on product direction, and work in a hybrid NYC

Qualifications

• 2-5 years of software engineering experience, preferably in startup environments.
• Strong experience with TypeScript and Node.js.
• Full-stack development with React.
• Experience with APIs, asynchronous systems, webhooks, and integrations.
• Strong understanding of database design and query optimization.
• Ability to take ownership of projects and execute independently.
• Comfortable operating in fast-paced, ambiguous startup environments.
• Excellent communication and collaboration skills.
• Passion for building reliable, customer-centric software products.
• Competitive salary ($160,000 - $220,000) and equity package.
• Health insurance coverage.
• Opportunity to work directly with experienced founders and industry leaders.
• High ownership and direct impact on company growth.
• Collaborative, fast-moving startup environment.
• Hybrid work environment with strong in-person collaboration opportunities in New York City.

Responsibilities

• Build and ship full-stack product features from concept through production
• Design scalable backend systems, APIs, and event-driven workflows
• Develop customer-facing applications and internal operational tools
• Create and maintain integrations with third-party platforms and external systems
• Improve platform reliability, observability, and system performance
• Collaborate directly with customers to understand workflows and solve operational challenges
• Work across frontend, backend, and infrastructure depending on business priorities
• Help shape engineering culture, architecture decisions, and product direction in an early-stage environment

Skills

TypeScript

Node.js

React

APIs / Webhooks

Database design

Ownership / independent execution

Communication

Job description

Jack in New York is seeking a software engineer to build and ship full-stack product features from concept through production. You will design scalable backend systems, APIs, and event-driven workflows, and develop customer-facing applications and internal tools.

You’ll integrate with third-party platforms, improve reliability, and collaborate closely with customers in a fast-paced startup. Join a high-ownership culture with direct impact on product direction, and work in a hybrid NYC