Full Stack Engineer

About Ossium

Ossiums mission is to improve the health vitality and longevity of human beings through bioengineering. We develop manufacture and bank cell therapy products that apply the power of stem cell science to revolutionize treatment for patients with blood immune and orthopedic diseases. At Ossium we empower our employees maintain the highest standards of operational excellence and are a force for good.

About the Job

Were hiring a Full Stack Engineer to join our growing tech team. This person will play a critical role in building and expanding our bone marrow matching platform; most critically leading the development of a new physician-facing front-end application that sits on top of our robust HLA (Human Leukocyte Antigen) matching donor database of cryopreserved bone marrow.

This front-end platform will be used daily by physicians nurses and transplant coordinators at transplant centers and hospitals both nationally and globally to search our one-of-a-kind bone marrow bank enabling life-saving matches for patients with blood cancers. The tool must be intuitive reliable and scalable as our donor network and transplant partnerships continue to grow. The ideal candidate will approach this with care for end users who are non-technical clinical professionals and build something that is both user-friendly and consistently functional.

In addition to this high-priority project this engineer will maintain and expand our data infrastructure internal dashboards and cross-functional tools. This role reports to the Director Technology.

Required Qualifications

• Bachelors Degree in Computer Science Data Science IT or related field
• 6 years of professional software development experience
• Advanced proficiency in Python including modern libraries and frameworks
• Strong experience with Django or Flask specifically utilizing server-side rendering (Jinja2) or HTMX for interactive front-ends
• Strong back-end development skills including RESTful APIs and microservices
• Proven experience building and deploying SMART on FHIR apps
• Deep understanding of OAuth 2.0 OpenID Connect and FHIR R4
• Familiarity with database systems (e.g. PostgreSQL MySQL NoSQL MSSQL) and data pipeline architecture
• Experience building dashboards or internal tools for operational teams
• Excellent written and oral communication skills including ability to work closely with clinical end users and key internal (non-technical) stakeholders to gather and translate requirements
• Ability to operate with high organization and excellent time management in a dynamic startup environment
• This position is based in our San Francisco office; we maintain a hybrid schedule of MondayThursday in the office with Friday as a remote work day

Preferred Qualifications

• Data science or computational biology background ideally with experience in a scientific computing environment
• Proficiency with scripting and automation for deployment and system integration
• Knowledge of CI/CD systems (e.g. GitHub Actions Jenkins) and infrastructure tools (e.g. Docker Terraform)
• Familiarity with clinical terminologies (LOINC SNOMED ICD-10).
• Experience with Data Mapping and Data Transformation (specifically converting internal database schemas to FHIR-compliant resources like Observation or ResearchStudy)
• Familiarity with HLA typing bone marrow transplantation or stem cell biology

Key Responsibilities

• Develop and maintain a physician-facing SMART on FHIR application using a Python-based web stack
• Manage the app registration and lifecycle on the and Epic Showroom portals
• Ensure HIPAA compliance and robust security protocols for data in transit and at rest
• Partner with hospital IT teams (Epic Bridges/Interconnect analysts) to facilitate technical handshakes and security reviews for app deployment
• Collaborate closely with internal scientists as well as clinical and commercial stakeholders to translate complex matching logic into a clean intuitive user experience
• Maintain and improve our HLA matching platform built with Python
• Design and implement back-end systems services and APIs to support data-driven applications
• Work with both structured and unstructured data to develop internal dashboards and visualization tools
• Contribute to system architecture code quality and design decisions across the platform
• Automate processes and pipelines to improve efficiency and data integrity
• Build robust maintainable codebases
• Promote optimal coding practices perform code reviews and mentor peers to improve code quality
• Support and enhance CI/CD pipelines SSO integrations and secure deployment environments

In your first six months some projects youll work on include:

• Designing and building the physician-facing front-end UI for donor search this is the top priority and will require close collaboration with HLA scientists and clinical partners to get right
• Working with an HLA Scientist to deepen your understanding of HLA matching and further develop our matching platform
• Partnering with Quality Assurance and Donor Services teams to understand their needs and add features to the current stack of services built for them
• Improving data communication protocols and APIs between sources of truth (e.g. connecting product inventory services to NetSuite)
• Collaborating with the Tech team to build effective dashboards that visualize different stacks of data

This position has a salary range of $160000 - $185000 annually with the potential to reach up to $200000 annually for candidates with exceptional experience and seniority to come in at a Senior Engineer level. Ossium Health takes a market-based approach to pay and welcomes applicants across a range of career stages we are open to scoping this role for the right person. The successful candidates starting salary will be determined based on but not limited to job-related skills experience qualifications and market conditions. This range may be modified in the future.

We offer a full slate of employee benefits including:

• Stock options
• 401(k) matching
• Medical dental and vision coverage
• Four weeks of PTO accrued (vacation & sick time) annually 11 company holidays
• Employer paid life insurance and long term disability
• Gym membership/recreational sports reimbursements