Founding Full-Stack Engineer - AI Production Systems

Location: San Francisco, CA (On-site)

Employment Type: Full-time

Compensation: $200K - $275K

We are building the first telemetry and production system designed for large language models (LLMs), giving them complete visibility into and control over running software, beginning with automatic error fixes.

We are seeking a Founding Full-Stack Product Engineer who is comfortable wearing all hats in a fast-paced environment. This role is highly dynamic, bridging classical full-stack engineering with cutting-edge Generative AI product features.

Key Responsibilities:

iOS Designer / Product Engineer (Elite Team, High Impact)

Location: Remote - NYC preferred but would consider strong designers remotely across the US.

Compensation: $200K - $250K

We are a highly profitable, high-growth platform that has enabled creators to generate over $50 million since launching in 2025. Our mission is to simplify the process of supporting anyone in the creator economy. We operate with an uncompromising commitment to talent density—maintaining a small, elite team where every member has outsized ownership and impact.

We are seeking an exceptional iOS Designer / Product Engineer to join us as one of the two dedicated experts jointly owning the entire native iOS application. If you have an extreme attention to detail, live to build beautiful products, and thrive in a fast-paced, high-autonomy environment, we want to hear from you.

You will be a key leader in product design and technical implementation, jointly responsible for the entire user experience, visual quality, and technical integrity of the core iOS application. You will balance design perfection with rapid shipping to deliver features that directly drive platform growth and creator success.

Key Responsibilities

Product Engineer - AI-Powered Collaborative Care Platform

Location: Hybrid - New York or Boston

Compensation: $160,000 – $225,000

We are building an AI-first medical practice from the ground up, focused on a future where collaborative care models integrate clinicians and AI to provide superhuman medical advice. Since our founding, we have raised over $35M from top-tier VC firms and are on track to serve hundreds of thousands of patients, partnering with prominent healthcare organizations nationwide. We are seeking a talented, driven Product Engineer to define the future of human + AI collaborative care.

This is a high-responsibility, hybrid role where you will have significant ownership over our core product and the opportunity to shape the future of our engineering organization. Your work will span the full technology stack, working across web, mobile, backend infrastructure, and AI/MLOps, all while ensuring stability and data integrity for enterprise clients.

What You’ll Be Working On:

Founding Engineer - High-Growth DeFi Mobile Trading App

Location: Remote - US Remote (Must be able to travel to NYC 2 weeks at a time, every 1-2 months for in person collaboration)

Compensation: $200K - $300K

We are a rapidly growing mobile app—the “Robinhood for DeFi”—that allows anyone to trade cryptocurrencies on-chain through a user-friendly interface. Since our launch, we have attracted 1.5+ million users. We are a lean, mission-driven team dedicated to making decentralized finance open and accessible to the world. We are looking for a Founding Engineer to assume a hands-on role in designing, building, and maintaining the production features that power our platform.

You will have end-to-end feature ownership across both our mobile and backend systems, shaping the core user experience for millions of users. This role demands rapid iteration, a security-first mindset, and the ability to design robust, scalable features. You will be a decision-maker and implementer, directly influencing the technical direction of the company.

What You'll Be Doing:

Senior Backend Engineer

Location: Hybrid in New York, NY

Compensation: $130,000 - $200,000 (Base Salary) + Competitive Equity

We are a rapidly growing, well-funded B2B SaaS company that is reinventing the Accounts Receivable category for scaling technology companies. Founded by repeat entrepreneurs and backed by major VCs, we are in hypergrowth mode, providing a modern, AI-powered platform to automate complex revenue workflows and billing. We are seeking a Mid/Senior Product Engineer with strong backend skills to build world-class financial tools and help shape our engineering culture.

This is a high-impact, product-focused role where you will take on significant responsibility for building the foundation of our platform, directly influencing product direction and company success.

In this role, you will:

Product Engineer

Location: Hybrid in New York (Flatiron) or Boston, MA

Compensation: $160,000 - $225,000 (Base Salary) + Competitive Equity

We are a well-funded, AI-first medical practice backed by over $35M from top-tier VC firms. Our mission is to define the future of human + AI collaborative care models by building a platform that automates across the entire clinical stack. We are seeking a talented, driven Product Engineer to take significant ownership over our product and help scale our engineering organization as we serve hundreds of thousands of patients nationwide.

This is a high-impact, hybrid role where you will be at the intersection of full-stack development, data infrastructure, and AI tooling. You will work cross-functionally with product, clinical, and commercial teams to integrate our platform with prominent healthcare organizations.

What you’ll be working on:

Founding Product Engineer (AI Consumer Outreach)

Location: Remote, USA

Employment Type: Full-time

Work Arrangement: Fully Remote

About the Role

Our client is a US consumer outreach and prospecting platform that is redefining how brands find and engage new customers. Their platform leverages 11 billion datapoints and 240 million US consumer prediction profiles to provide intelligent automated matching and multi-touch B2C outreach. The company recently raised $5 million in funding.

They are seeking a Founding Product Engineer to build and ship full-stack features that power their AI-driven outreach platform. This is a high-impact, hands-on role where you'll lay the foundation of the entire technology stack, influence product direction, and turn massive datasets into real customer impact.

What You'll Do

Location: New York, NY or London, UK

Employment Type: Full-time

Work Arrangement: Hybrid (2-3 days in-office) or Remote (within +/- 3 hours of NYC/London)

About the Role

Our client, a company reinventing the B2B Accounts Receivable category, is in hypergrowth mode with $19 million in funding from investors like a16z and Salesforce. Their modern, AI-powered platform helps finance and revops teams scale their billing and quote-to-cash process for complex contracts.

They are seeking a Mid/Senior Product Engineer with strong backend skills to build world-class financial tools. You will have a hand in shaping the backend architecture, guiding product direction through cross-functional collaboration, and playing an integral role in building their early engineering culture.

What You'll Do

• Build robust and scalable financial tools for fast-scaling technology companies.
• Play a key role in shaping the overall backend architecture and technical roadmap.
• Collaborate deeply with data, product, and design teams to create a world-class product experience and guide feature direction.
• Drive engineering quality and contribute to a high-performance, autonomous culture.

Requirements

Location: San Francisco, CA (Near Salesforce Tower) Employment Type: Full-time On-site: 5 days a week in-person

About the Role

Our client is an AI startup building foam, a cutting-edge tool designed to be the highest-signal solution for solving software bugs. They've raised $2.4M from notable investors and are focused on making engineering jobs more engaging by automating the debugging process.

They are seeking a Full Stack Product Engineer—a generalist who is comfortable wearing all the hats. In addition to classical full-stack work (from CSS to the database level), you will be expected to increase the general intelligence of the platform by designing and implementing cutting-edge AI product features.

What You'll Do

Location: San Francisco Bay Area

Employment Type: Full-time

Work Arrangement: Hybrid

About the Role

Our client is building the first browser-native AI agents for financial advisory. Their agents can see what's on-screen, understand context, and perform compliant actions and multi-step workflows across any tool without APIs. They are a VC-backed startup with millions in funding and support from leading fintech investors.

They are seeking a Founding Fullstack Engineer to work closely with the CTO, CPO, and design team to deliver core product features and evolve their AI agent platform. This role offers early ownership, rapid shipping, and direct influence on the company's technical direction.

What You'll Do

• Cover the full stack, including front-end web applications and back-end services.
• Develop core features for browser automation and enterprise integrations.
• Evolve and integrate AI-driven workflows into the platform.
• Own projects from conception to deployment in a high-autonomy, fast-paced environment.

Requirements