Senior Full Stack Engineer (Founding Role)

Location: Hybrid in New York City, NY

Compensation: $150,000 - $250,000 (Base Salary) + Significant Equity

We are a fast-growing, mission-driven mental health startup tackling a critical and underserved area: geriatric mental health care (the 65+ age group). Backed by top-tier VCs and healthcare founders, we've achieved extreme Product-Market Fit in a large, blue ocean market. We are seeking a Founding Full-Stack Engineer to lead our AI-powered full stack from architecture to launch, with a clear trajectory to an Engineering Leadership role.

This is a ground-floor opportunity that demands speed, autonomy, and technical excellence. You will work side-by-side with the co-founders, owning major technical decisions and shaping the engineering organization.

Your Key Responsibilities:

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:

Lead AI Engineer

Location: Remote (US, excluding California) or Hybrid in Brentwood, TN

Compensation: $210,000 - $230,000 (Base Salary) + Discretionary Incentive

We are a stable, growing enterprise software company providing integrated risk management and compliance solutions to over 5,000 financial institutions nationwide. As the First AI Hire, you will partner directly with the CEO and CTO to define and deliver an ambitious AI roadmap, focusing on shipping agentic AI solutions that accelerate product development and deliver extraordinary outcomes for our customers.

This is a career-defining opportunity with a serious commitment to AI transformation, backed by a significant budget and Private Equity funding. You will lead cross-functional initiatives and mentor teams to continuously innovate at the boundaries of enterprise AI.

Key Responsibilities:

Forward Deployed Engineer

Location: San Francisco, CA (100% On-site)

Compensation: $120,000 - $180,000 (Base Salary) + Competitive Equity

We are a rapidly growing, Series A-backed AI platform that builds and deploys AI workers to automate communication across phone calls, emails, and messages. Our solutions primarily target the logistics industry, helping enterprises automate freight booking, tracking, and payments. We are seeking a versatile Forward Deployed Engineer who blends strong Python technical skills with excellent customer-facing ability to ensure customers maximize the value of our AI platform.

This is a high-intensity, hands-on role at the intersection of technical development and customer engineering. You will be instrumental in the full customer journey, from initial onboarding to ongoing use and value realization.

In this role, you will:

Applied AI Engineer

Location: NYC (100% On-site in Soho)

Compensation: $150,000 - $225,000 (Base Salary) + Competitive Equity

We are building the world's largest network of doctors, patients, and first-party data, applying AI to every step of bringing new therapies to market. Our first product ensures patients get life-changing therapeutics as quickly and cheaply as possible by abstracting complex insurance, affordability, and supply chain logistics. Backed by top-tier investors, we are seeking an Applied AI Engineer to take end-to-end responsibility for projects that drive user growth, operational efficiency, and revenue generation.

This is a demanding, high-autonomy role focused on the production use of LLMs and ML to solve core business problems in the highly complex healthcare and life sciences space. You will operate as an owner, driving impact across the product surface area and influencing business decisions.

If you join, you will:

Staff Software Engineer, Machine Learning

Location: Burlingame, CA (On-site, 4 days a week)

Compensation: $145,000 -$250,000 (Base Salary) + Equity Options

We are a rapidly growing AI company applying Large Language Models (LLMs) to transform a critical, high-impact domain within the healthcare industry. We're looking for a highly skilled and experienced Staff Software Engineer, Machine Learning to drive the architecture and scaling of our LLM backend systems.

This role is ideal for an engineer who thrives at the intersection of backend architecture and applied AI, designing the APIs, data pipelines, and infrastructure that make LLMs reliable, secure, and cost-efficient in production. Join us and help push LLMs beyond demos into mission-critical healthcare workflows.

Job Description 🖥️

As a Staff Software Engineer, you’ll be a technical leader responsible for the end-to-end delivery of our core LLM backend projects, setting the engineering best practices, and mentoring peers in system design.

Key Responsibilities:

Staff Data Scientist

Location: San Francisco, CA (100% On-site)

Compensation: $200,000 - $300,000 (Base Salary) + Equity

We are a high-growth, well-funded AI company building the most advanced conversational AI agents for the enterprise, serving customers like Duolingo, Notion, and Rippling. We are seeking a Staff Data Scientist to bring deep technical rigor, advanced statistical methods, and analytical frameworks to our product and business strategy. This role requires a blend of strong analytical expertise, product acumen, and the ability to influence strategic decision-making at the highest levels.

As a Staff Data Scientist, you will be the primary driver of data-driven decision-making and the experimentation culture across the entire company. Your work will directly inform product strategy and company performance.

In this role, you will:

Location: San Francisco, CA (Hybrid - 4 days/week in-person)

Compensation: $125,000 - $200,000 (Base Salary) + Equity Participation

We are a rapidly growing, well-capitalized health tech company pioneering the use of Generative AI and Voice Agents to transform patient communication. Our platform has already handled hundreds of thousands of patient interactions across over a hundred clinics, and we are scaling fast. We are looking for a product-minded Senior Software Engineer to build and scale the intelligent systems that make exceptional healthcare accessible anytime, anywhere.

As a Senior Software Engineer, you will play a critical role in developing our AI-powered communication platform, working alongside world-class engineers and founders. You will have a high degree of autonomy and be involved in key product decisions from the ground up.

Key Responsibilities:

Senior Infrastructure Software Engineer

Location: Hybrid in Miami, Florida

Compensation: $200,000 - $250,000 (Base Salary) + Competitive Equity

We are the world's leading AI medical information platform, backed by top-tier investors and trusted by healthcare professionals at over 10,000 care centers worldwide. Our mission-critical platform powers medical AI used by healthcare providers globally. We are seeking a Senior Infrastructure Software Engineer to architect and scale our infrastructure ecosystem in a demanding, rapid-iteration environment.

As a key member of the Core Engineering team, you will have significant autonomy to make architectural decisions and drive initiatives across service reliability, data pipelines, and security for our large-scale medical AI platform.

Responsibilities:

Location: Remote (US or Canada)

Compensation: 180,000 - 270,000 (Base Salary) + ISO Options

We are a high-growth, market-leading software company operating in the B2B data space, empowering everyone to take action on their data. We're pioneering a new operational paradigm in marketing by leveraging an AI Decisioning platform that allows non-technical users to set goals and guardrails for personalized customer interactions.

We are seeking a Senior Full Stack Engineer with a strong focus on the front end (70-80% front end, 20-30% back end) to join our fast-moving team. You will be instrumental in developing the intuitive interface that integrates complex machine learning models, unlocking advanced growth and marketing capabilities for our customers.

As a Senior Full Stack Engineer, you will own the end-to-end development of features for a new generation of marketing and growth products, ensuring a seamless and powerful user experience.

Key Responsibilities: