Tech Firefly

Principal Full Stack Engineer

Remote, United States remote Entry $120 - $130
remote Technology & IT Salary listed Curated
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About the role

We are looking for a highly skilled Principal Full Stack Engineer to drive the development of our next-generation, interoperable healthcare solutions. This role requires a seasoned engineer who can seamlessly balance high-level architectural design with hands-on full-stack delivery.
The ideal candidate will have deep roots in Java ecosystems, strong frontend capabilities in Angular, and a comprehensive understanding of healthcare interoperability standards (FHIR/HL7) to connect complex clinical ecosystems.
Location: Remote
Pay: $120-130/hour
Contract Length: 12+ Months
Responsibilities
Lead the design and development of end-to-end applications, combining robust Java Microservices with a modern Angular frontend.
Architect seamless data exchange pipelines utilizing FHIR/HL7 standards and API Gateways.
Design and deploy scalable, cloud-native, and event-driven distributed systems on GCP.
Ensure data integrity and performance across PostgreSQL and distributed databases like Google Cloud Spanner.
Define engineering best practices, conduct code reviews, and guide agile teams toward successful product launches.
Requirements
12–15 years of experience in full-stack software development, with significant tenure in architectural or principal roles.
Prior experience in the Healthcare domain is highly preferred.
Expert knowledge of Java Microservices, API Gateways, and healthcare compliance standards (FHIR / HL7).
Strong proficiency with Angular for building scalable enterprise user interfaces.
Proven experience architecting solutions on GCP and managing PostgreSQL or Spanner databases.
Advanced mastery of cloud-native systems, service mesh, and event-driven patterns.
Nice to Have
Familiarity with Electronic Health Record (EHR) systems, specifically EPIC.
Proficiency with Python.
Experience with GKE, GCS, and APIGEE.
Exposure to Agentic AI and AI-assisted coding methodologies.
Originally posted on Himalayas

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Role
Technology & IT API integration MySQL Project Management Remote Collaboration remote

Likely questions

  1. Tell us about work you have done that is close to the Principal Full Stack Engineer role.
  2. How would you approach your first 30 days at Tech Firefly?
  3. Which of API integration, MySQL and Project Management have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you stay organised and communicate clearly when working remotely?

Prepare before the call

  • A recent example that proves your experience with API integration, MySQL and Project Management.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Principal Full Stack Engineer role because I can bring practical experience in API integration, MySQL and Project Management, learn the team quickly, and contribute to the outcomes Tech Firefly needs from this hire.

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