Opportunity 

We're seeking a Senior Software Engineer to join our Copilot team and contribute significantly to the development of our new AI-powered platform. This platform is designed to optimize and enhance the efficiency of our clinical operations teams.

This role offers a compelling opportunity at the intersection of backend engineering, healthcare technology, and system integrations. You will work closely with AI, mobile, and other talented engineers, as well as clinical operations teams, to streamline workflows and ultimately improve the member experience.

Responsibilities

• Design, develop, and scale backend services and RESTful APIs using FastAPI (Python) and Spring Boot (Java).
• Architect and implement AI agents, including prompt engineering, evaluation, and continuous improvement workflows.
• Build event-driven systems and well-defined internal APIs to enable reliable, real-time communication across services.
• Drive technical architecture decisions in collaboration with engineering and product leadership.
• Own projects end-to-end: design, implementation, testing, deployment, and operational support.
• Manage and improve CI/CD pipelines to enable safe and rapid feature releases.
• Monitor, troubleshoot, and optimize system performance to support high throughput and rapid growth.
• Partner closely with Product, Design, DevOps, and AI/ML teams to align technical execution with Copilot product goals.
• Write clean, testable, and maintainable code following engineering best practices.
• Take on additional responsibilities as needed.

Qualifications 

• Bachelor’s degree in Computer Science, Engineering, or related STEM field (Master’s preferred).
• 5+ years of professional software engineering experience (backend or full-stack).
• Strong proficiency in Python and/or Java, with hands-on experience building microservices using FastAPI and/or Spring Boot.
• Deep understanding of API design (REST), authentication/authorization (OAuth2, JWT), and data modeling.
• Experience designing event-driven systems and distributed architectures.
• Practical experience working with AI systems, including prompt engineering or AI service integration.
• Strong debugging and performance optimization skills in production environments
• Excellent written and verbal communication skills.
  
  

Additional Information 

• Remote role (U.S.-based candidates only).
• Experience with AWS, Kubernetes, and CI/CD pipelines is a plus
• Prior experience working on AI-native products or internal developer platforms is a plus.
• Experience working in fast-paced, high-growth startup environments

Compensation and Benefits  

The compensation range for this position is $160,000-$180,000 annually. 

In addition, Twin has an ambitious vision to empower people to live healthier and happier lives, and to achieve this purpose, we need the very best people to enhance our cutting-edge technology and medical science, deliver the best possible care, and turn our passion into value for our members, partners and investors. We are committed to delivering an outstanding culture and experience for every Twin employee through a company based on the values of passion, talent, and trust. We offer comprehensive benefits and perks in line with these principles, as well as a high level of flexibility for every Twin

• A competitive compensation package in line with leading technology companies
• As a remote friendly company we are committed to providing opportunities for all who join to further build relationships, increase cross-functional collaboration, and celebrate our accomplishments.
• Opportunity for equity participation 
• Unlimited vacation with manager approval
• 16 weeks of 100% paid parental leave for delivering parents; 8 weeks of 100% paid parental leave for non-delivering parents
• 100% Employer sponsored healthcare, dental, and vision for you, and 80% coverage for your family; Health Savings Account and Flexible Spending Account options
• 401k retirement savings plan