Founding Engineer, Full Stack (Product-Minded)

Full-time | On-site

Location: San Francisco

We are building a unified platform that streamlines the use of large language models (LLMs) to build and deploy applications at scale. We are seeking a Founding Full Stack Engineer to own the entire application layer, driving developer productivity by providing a single pane of glass for data collection, model evaluation, training, and deployment.

As a Founding Engineer, you will be a product-minded generalist responsible for the entire feature lifecycle. You'll primarily focus on the backend systems that interface with our core machine learning (ML) stack, ensuring a scalable and reliable platform for our customers.

What You'll Do:

Analytics Engineer

Full-time | On-site

Location: New York

We are a technology company leveraging AI and data to solve complex operational challenges in a life sciences context. We are seeking a highly motivated Analytics Engineer to build the robust data foundation that powers our operations, client reporting, and strategic growth. This is a high-autonomy, high-impact role essential for driving better, faster decisions across the entire organization.

As an Analytics Engineer, you will be the owner of our core data assets and practices. You will ensure data is clean, consistent, and readily available as a source of truth for all internal and external stakeholders, from product to leadership to key clients.

Key Responsibilities:

Part Time Specimen Collector  

Location: John Day, Oregon

Schedule: Part-Time | Ideal Candidate:  Monday and Thursday, Friday - 9:30am - 11:30am Mon, Wed, Thurs - 2pm-4pm

As a Specimen Collector: 

• Collect patient urine and/or oral fluid (saliva) specimens 
• Process and package collections for shipping
• Serve as an intermediary between the practice / clinic and the laboratory 
• Record patient information, physician order details, and pertinent laboratory information
• Resolve specimen concerns with billing or patient information in ordering portal
• Order and maintain collection supplies inventory onsite 
• Observe collection for Millennium Health specimens (when applicable)
• Driving from/to multiple facilities may be required

Requirements

Ideal Candidate:  

Join HSO and help shape the future of AI-driven cloud solutions. We believe technology should empower people and businesses to thrive. If you’re passionate about building innovative, ethical, and reliable AI solutions and enjoy leading projects and sharing knowledge we’d love to hear from you! 

About the Role 
As our AI Architect, you’ll design secure, scalable AI solutions, guide strategy, and work with customers and global teams. You’ll lead exciting projects, influence technology adoption, and help drive innovation at HSO. 

Key Responsibilities 

• Develop and implement enterprise AI strategies, frameworks, and governance. 

• Lead end-to-end delivery of AI solutions (migration, modelling, testing, deployment). 

• Design scalable AI systems and apply responsible AI practices. 

• Ensure privacy, security, and regulatory compliance. 

• Mentor technical teams and foster best practices. 

• Partner with customers to identify opportunities and enhance solutions. 

• Deliver workshops and share emerging technologies across teams. 

Requirements

Core Technical & Design Skills 

Full Time Male Specimen Collector Phlebotomist II 

Location: Fort Wayne, IN

Schedule: Full Time | Monday-Friday 8:00am-4:00pm, schedule may vary. (40 hours/week)

Seeking: Male candidates required for observed collections of gender identified male patients. Candidates must be willing to travel

This is a traveling position which receives mileage reimbursement.  A clean MVR, active driver's license and reliable transportation is required.

Help make a positive impact in your community! 

Millennium Health LLC is an accredited specialty laboratory with more than a decade of experience in medication monitoring and drug testing services, helping clinicians monitor use of prescription medications and illicit drugs supporting improved clinical decision-making as part of treatment for millions of Americans with chronic pain, mental illness, and substance use disorders.

The Specimen Collector II is a key role at Millennium Health.  As our representative, this position provides exemplary care and exceptional customer service to patients, clinicians, and our laboratory.

Full Time Male Specimen Collector  

Location: Tulalip Bay, WA

Schedule: Full-Time | Monday - Friday 5:30am - 2:00pm

Seeking: Male candidates required for observed collections of gender identified male patients.

Help make a positive impact in your community! 

Millennium Health LLC is an accredited specialty laboratory with more than a decade of experience in medication monitoring and drug testing services, helping clinicians monitor use of prescription medications and illicit drugs supporting improved clinical decision-making as part of treatment for millions of Americans with chronic pain, mental illness, and substance use disorders.

The Specimen Collector is a key role at Millennium Health.  As our representative, this position provides exemplary care and exceptional customer service to patients, clinicians, and our laboratory.

As a Specimen Collector: 

Full Time Female Specimen Collector  

Location: Tulalip Bay, WA

Schedule: Full-Time | Monday - Friday 5:30am - 2:00pm

Seeking: Female candidates required for observed collections of gender identified female patients.

Help make a positive impact in your community! 

Millennium Health LLC is an accredited specialty laboratory with more than a decade of experience in medication monitoring and drug testing services, helping clinicians monitor use of prescription medications and illicit drugs supporting improved clinical decision-making as part of treatment for millions of Americans with chronic pain, mental illness, and substance use disorders.

The Specimen Collector is a key role at Millennium Health.  As our representative, this position provides exemplary care and exceptional customer service to patients, clinicians, and our laboratory.

As a Specimen Collector: 

Staff Software Engineer, Machine Learning (LLM Backend)

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

Employment Type: Full-time

Salary Range: $145K - $250K

We are a rapidly growing AI technology company transforming mission-critical processes in the healthcare industry. We are seeking a Staff Software Engineer to architect and scale the secure, reliable backend systems that power our advanced Large Language Model (LLM) applications. This role requires expertise at the intersection of applied AI, distributed systems, and security/compliance in a regulated domain.

You will be responsible for pushing LLMs beyond demos into mission-critical, cost-efficient, and secure production healthcare workflows. This is a technical leadership role driving the end-to-end delivery of core ML/LLM systems.

Key Responsibilities:

Software Engineer - AI & Legal Tech Transformation

Location: Hybrid - New York

Compensation: $160,000 – $250,000

We are a fast-growing legal technology company, founded by a mix of legal operators and tech veterans from top-tier companies, focused on solving high-impact problems in the legal world. We are turning chaos—repetitive tasks, paper-based bottlenecks, and data fragmentation—into clarity using well-designed systems, AI, and thoughtful software. We are seeking a Software Engineer to own critical features end-to-end and influence our engineering culture from the ground up.

You will be responsible for building fast, shipping often, and partnering closely with cross-functional teams (product, ops, design, and legal experts). This role demands high ownership, requiring you to manage the full feature lifecycle from architecture design to production release. You must move quickly without sacrificing quality, integrating safety, observability, and performance from the start.

What you’ll do:

Senior Infrastructure Software Engineer - Medical AI Platform

Location: Hybrid - Miami

Compensation: $200,000 – $250,000

We are the world’s leading AI medical information platform, featured by the New England Journal of Medicine and trusted by medical professionals at over 10,000 care centers worldwide. Our mission-critical platform provides accurate, cited, and grounded answers at the point of care. Backed by investors including Sequoia Capital and Mayo Clinic, we are seeking a Senior Infrastructure Software Engineer to build the highly reliable and secure backbone for our medical AI platform.

Joining our Core Engineering team, you will have exceptional technical scope and direct impact, translating business objectives into elegant, scalable technical solutions. This is a hybrid role for a backend expert who thrives in a focused startup environment, owning key infrastructure and driving initiatives across reliability, data, and security, specifically handling sensitive medical data at scale.

Responsibilities: