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:

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:

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 Full Stack Software Engineer (Backend/AI Focus)

Location: Los Angeles, CA (100% On-site)

Compensation: $170,000 - $225,000 (Base Salary) + Significant Equity

We are an early-stage, YC-backed company building fully autonomous AI agents powered by in-house models that can find, exploit, and patch complex vulnerabilities in web applications at massive scale. We are seeking a passionate Founding Full Stack Software Engineer to build and scale the core systems. This is a high-impact role with a focus on backend architecture and AI agent systems, directly addressing the speed and scale challenges posed by AI-generated code.

As a Founding Engineer, you will have significant responsibility for designing, developing, and maintaining our scalable, high-performance web applications and cutting-edge AI Agent systems. Your focus will be on the backend and AI components.

Key Responsibilities:

Founding Engineer

Location: New York City, NY (100% On-site)

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

We are an early-stage, YC-backed company building the future clean data layer for the internet, starting with financial firms. Our platform solves complex data cleaning, extraction, and validation problems by combining advanced AI (LLMs) with expert human review via a simple API. We're looking for a highly capable and driven Founding Engineer to join us and help build the core of our platform from the ground up. This role offers an opportunity for the right candidate to grow into a CTO-level position.

As a Founding Engineer, you will take ownership of critical systems that drive our product, working across the entire stack. You will directly influence our product strategy and technical direction, experiencing the full arc of building a successful startup.

What you'll do:

Software Engineer (New Grad - Construction Tech Platform)

Company: Agave (YC W22)

Location: San Francisco, CA (FiDi)

Employment Type: Full-time

Work Arrangement: On-site 5 days a week

About the Role

Our client is a well-funded, profitable YC-backed startup (YC W22) modernizing the $12 trillion global construction industry. They solve a massive problem: connecting fragmented, siloed software systems—many of which are 20-40 years old, on-prem, and lack modern APIs. They build proprietary APIs to connect these systems and wrap them in a modern UI to automate critical work, like syncing financial data between job sites and accounting offices. The company has over 200 paying customers, is cash-flow positive, and is backed by investors like Accel and leaders from Procore and Autodesk.

They are seeking a world-class New Grad Software Engineer who loves simplifying complex systems, unifying fragmented data, and building high-scale backend systems. This role offers high ownership and the chance to work on unique technical challenges that exist at the intersection of old-school enterprise and modern cloud infrastructure.

What You'll Be Doing (Interesting Technical Challenges)

Software Engineer (Founding iOS)

Location: New York, NY or Toronto, ON

Employment Type: Full-time

Work Arrangement: On-site 5 days a week

About the Role

Our client is a well-funded FinTech company with $42 million in total funding, building a modern banking and cash management platform for businesses that sell physical goods. Their mission is to turn banking from a cost center into a profit center by automating financial tasks for consumer brands with sales between $\$5$ million and $\$200$ million. They already serve hundreds of customers that collectively produce over $1 billion in GMV.

They are looking for a Founding iOS Engineer to launch and own the entire mobile experience. This is a critical, high-impact role focused on transforming complex financial data into a simple, beautiful, high-performance iOS application that customers will use daily.

What You'll Do

Full Stack Engineer (AI Defense/Government Contracts)

Location: San Francisco, CA

Employment Type: Full-time

Work Arrangement: On-site 5 days a week

About the Role

Our client is an AI platform redefining how companies interact with the government by matching them to defense contract opportunities they are most likely to win. The company is backed by top defense investors, is profitable, has hit $1M ARR in under 8 months, and is growing at 60% MoM. This mission-driven role focuses on solving critical national security problems.

They are seeking a Full Stack Engineer to be a Founding Engineer for building the core data pipeline and user-facing application. You will own the process of transforming a "firehose" of daily government data into useful, browsable, and interpretable insights for defense companies.

What You'll Do

Full Stack Engineer (AI-Native Compliance)

Location: New York, NY

Employment Type: Full-time

Work Arrangement: On-site 5 days a week

About the Role

Our client is a rapidly growing AI startup building the next-generation compliance platform. Launched in April 2025, they have already crossed $1.2 million ARR with a small team by automating complex security and compliance processes (SOC 2, ISO, HIPAA, GDPR) using AI agents—turning months-long audits into days.

They are looking for a Full Stack Engineer who is hungry, highly technical, and ready to own features from concept to production. As an early engineer, you will work directly with the founders, shape core product decisions, and build the infrastructure necessary to scale the company toward nine figures.

What You'll Do