Staff Engineer - Fullstack
CertifyOS
Lisbon, Portugal
Posted on Oct 27, 2025
About Certify:
At CertifyOS, we're building the infrastructure that powers the next generation of provider data products, making healthcare more efficient, accessible, and innovative. Our platform is the ultimate source of truth for provider data, offering unparalleled ease and trust while making data easily accessible and actionable for the entire healthcare ecosystem.
What sets us apart? Our cutting-edge, API-first, UI-agnostic, end-to-end provider network management platform automates licensing, enrollment, credentialing, and network monitoring like never before. With direct integrations into hundreds of primary sources, we have an unbeatable advantage in enhancing visibility into the entire provider network management process. Plus, our team brings over 25+ years of combined experience building provider data systems at Oscar Health, and we're backed by top-tier VC firms who share our bold vision of creating a one-of-a-kind healthcare cloud that eliminates friction surrounding provider data.
But it's not just about the technology; it's about the people behind it. At Certify, we foster a meritocratic environment where every voice is heard, valued, and celebrated. We're founded on the principles of trust, transparency, and accountability, and we're not afraid to challenge the status quo at every turn. We're looking for purpose-driven individuals like you to join us on this exhilarating ride as we redefine healthcare data infrastructure.
About the role:
As an Staff Engineer for one of our application teams, you’ll work with a team of talented developers and contribute hands-on to our provider data management platform and suite of products that directly impact the success of our customers. If you are an experienced people manager looking to own a critical piece of the business then this role is for you.
What you’ll do
- Own the core applications facing our end users and internal stakeholders for our credentialing and monitoring system
- Oversee the monitoring/alerting of our highly available systems
What you’ll need
- 8+ years of enterprise software development experience building full stack SaaS platforms
- Proven track record of delivering high quality enterprise SaaS platform in a high stakes environment
- Proven track record of leading your teams to deliver on time with an ability to account for an overcome unknowns and uncertainty
- Experience delivering great experiences with modern UI and UX given limited guidance
- Experience building and delivering APIs for SaaS platforms
- Experience delivering SaaS applications that scale and perform with low latency and high throughput
- Strong written and verbal communication skills
- Proven track record of unit and integration testing as a part of your software development processes (CI/CD)
Bonus points if you:
- Have experience with a microservices architecture
- Developed in environments with large amounts of data
- Experience with healthcare data and/or working with PII
- Performed testing of the code you delivered to ensure it is of high quality
Tools/Technologies
- React
- NodeJS
- Java experience
- Google Cloud Platform
- Jest and Cypress
- Git and Github
- Sentry
- Snyk
- Jira
- Slack
At Certify, we're committed to creating an inclusive workplace where everyone feels valued and supported. As an equal opportunity employer, we celebrate diversity and warmly invite applicants from all backgrounds to join our vibrant community.