Senior Full Stack Engineer

Senior Full Stack Developer – Healthcare / Digital Health | Ontario, Canada | Hybrid Confidential Public Sector Search Stafingo is hiring for their public sector client in Ontario for a highly experienced Senior Full Stack Developer – Healthcare to support a large-scale digital health modernization initiative. This is a confidential search. The successful candidate will contribute to the design and development of secure, scalable healthcare applications and interoperability services supporting provider and healthcare service discovery, data integration, and modern digital health workflows. The role requires strong hands-on expertise across Java, Spring Boot, React, TypeScript, AWS, FHIR, healthcare interoperability, REST APIs, and cloud-native architecture, with particular emphasis on healthcare data platforms and provider directory solutions. Position: Senior Full Stack Developer – Healthcare Employment Type: Contract Start Date: August 31, 2026 Contract Term: 164 business days Location: Ontario – Hybrid, onsite as required Public Sector Experience: Must Have Pay Range: $85/hr T4 – $100/hr INC (depending on skills and experience) Submission Deadline: Wednesday, August 5, 2026 @ 4:00 PM About the Role : The Senior Full Stack Developer will work on a complex healthcare technology modernization program focused on improving digital provider and healthcare service discovery, interoperability, data integration, and intelligent search capabilities. You will design and deliver enterprise-grade backend services, APIs, integrations, and user interfaces while working closely with architecture, data, interoperability, security, operations, and business teams. The ideal candidate has deep healthcare interoperability experience and can work across FHIR, HL7, SMART on FHIR, AWS healthcare services, FHIR repositories, provider data, master data management, and enterprise search. Key Responsibilities : ▪ Design, develop, maintain, and support enterprise backend services using Java and Spring Boot ▪ Develop modern web interfaces using React and TypeScript for provider search, administration, and healthcare service functionality ▪ Design and implement secure RESTful and FHIR APIs supporting healthcare information exchange ▪ Develop and configure FHIR repositories, transactions, validation, search, and interoperability services ▪ Build integrations between healthcare applications, provider data platforms, master data systems, and external healthcare systems ▪ Implement healthcare interoperability using FHIR R4/R4B, HL7v2, SMART on FHIR, OAuth 2.0, OIDC, and JWT ▪ Develop secure authentication, authorization, role-based access control, and API security capabilities ▪ Design and implement advanced provider and healthcare service search using OpenSearch or Elasticsearch ▪ Develop data synchronization, transformation, validation, and governance services for provider, practitioner, organization, location, specialty, and healthcare service information ▪ Build event-driven integrations using AWS messaging and integration services such as EventBridge, SNS, and SQS ▪ Develop scalable cloud-native solutions using AWS services including ECS, Lambda, API Gateway, S3, IAM, CloudWatch, and Secrets Manager ▪ Design and optimize PostgreSQL databases, data models, queries, and application performance ▪ Implement automated testing, CI/CD pipelines, deployment automation, and production support ▪ Participate in architecture reviews, technical design sessions, sprint planning, backlog refinement, and code reviews ▪ Troubleshoot production issues and support releases, deployments, monitoring, and operational stability ▪ Develop API specifications, technical documentation, deployment documentation, and knowledge-transfer materials Required Technical Experience : Candidates should demonstrate strong hands-on experience with: Healthcare & Interoperability : ▪ FHIR R4 / R4B ▪ SMART on FHIR ▪ HL7v2 ▪ Healthcare messaging and interoperability standards ▪ FHIR APIs and REST APIs ▪ OAuth 2.0 / OIDC / JWT ▪ Healthcare provider and service data ▪ Master Data Management and provider registry integration Application Development ▪ Java ▪ Spring Boot ▪ Microservices architecture ▪ React ▪ TypeScript ▪ RESTful API development ▪ Distributed enterprise applications Healthcare Platforms ▪ Smile CDR implementation and customization ▪ AWS healthcare data platforms, including AWS HealthLake ▪ FHIR repository implementation ▪ Provider directory / provider registry solutions ▪ Integration with hospital or healthcare information systems Cloud & DevOps ▪ AWS cloud-native architecture ▪ ECS ▪ Lambda ▪ API Gateway ▪ S3 ▪ EventBridge ▪ SNS / SQS ▪ IAM ▪ CloudWatch ▪ Secrets Manager ▪ Git / GitHub ▪ GitHub Actions ▪ CI/CD ▪ Automated testing Data & Search ▪ OpenSearch / Elasticsearch ▪ PostgreSQL ▪ Data modelling and optimization ▪ Metadata and master data ▪ Data synchronization and transformation ▪ Data validation and quality Highly Preferred Experience ▪ Experience delivering provider directory or healthcare service directory solutions ▪ Experience integrating with hospital information systems and EMRs ▪ Experience with major healthcare platforms such as Epic, Oracle Health/Cerner, MEDITECH, or comparable systems ▪ Experience implementing provider, practitioner, organization, location, and healthcare service master data solutions ▪ Experience with FHIR Subscriptions and FHIR Messaging ▪ Experience with healthcare event-driven architectures using AWS EventBridge, SNS, and SQS ▪ Experience validating FHIR implementations using interoperability testing frameworks such as Inferno or Touchstone ▪ Experience implementing secure SMART on FHIR applications and backend services ▪ Experience with highly available AWS architectures ▪ Experience implementing monitoring, logging, auditing, and operational support using AWS CloudWatch and related services ▪ Experience working within public sector or regulated healthcare environments What We're Looking For The strongest candidates will be: ▪ Hands-on: Strong software development experience rather than purely architectural or managerial experience ▪ Healthcare-focused: Deep understanding of healthcare interoperability and clinical data standards ▪ Cloud-native: Comfortable designing and supporting scalable AWS solutions ▪ API-driven: Experienced building secure REST and FHIR APIs and distributed microservices ▪ Integration-focused: Able to connect complex healthcare, data, and enterprise systems ▪ Security-conscious: Strong understanding of authentication, authorization, privacy, and secure API design ▪ Collaborative: Comfortable working with architects, developers, data teams, interoperability specialists, security teams, operations, and business stakeholders ▪ Production-minded: Experienced with CI/CD, testing, deployments, troubleshooting, monitoring, and operational support Key Deliverables The successful candidate will contribute to: ▪ Java/Spring Boot backend services and microservices ▪ React/TypeScript application enhancements ▪ FHIR API development and integration ▪ FHIR repository configuration and implementation ▪ AWS healthcare platform integration ▪ Provider and healthcare service data synchronization ▪ Master data management integration services ▪ Healthcare system integration components ▪ OpenSearch-based provider and service search capabilities ▪ SMART on FHIR authentication and authorization ▪ Secure REST API services ▪ Cloud-native AWS deployment components ▪ CI/CD pipeline automation ▪ Unit, integration, and API testing ▪ Technical and deployment documentation ▪ Production implementation and troubleshooting ▪ Knowledge transfer and operational support Why This Opportunity? This is an opportunity to work on a large-scale public sector digital health modernization program involving healthcare interoperability, cloud technologies, FHIR, provider data, enterprise integration, and modern application development. If you are a senior full-stack developer who enjoys solving complex healthcare integration challenges and building secure, scalable cloud-native solutions, we would like to hear from you. Apply Now Stafingo is conducting this search on a confidential basis. Client details and certain program-specific information will be shared with qualified candidates during the recruitment process. Please apply to the job posting directly or send your resume to harpreet@stafingo.com for immediate consideration.