Software Engineer - Contractor

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Software EngineerSoftware Engineering

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Requirements Summary

Senior Software Engineer We are seeking a Senior Backend Software Engineer to join our team as a contractor (PJ – Pessoa Jurídica) based in Brazil.

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Software EngineerSoftware Engineering

HealthMark Group is a leading provider of healthcare release of information solutions, dedicated to simplifying and streamlining the exchange of medical data between healthcare providers, payers, and patients. We empower healthcare organizations to securely and efficiently manage the exchange of health information and manage the exchange of health information securely and efficiently, ensuring compliance with regulatory requirements while maintaining the highest standards of privacy and security.

We are seeking a Senior Backend Software Engineer to join our team as a contractor (PJ – Pessoa Jurídica) based in Brazil. This role focuses on building HIPAA-compliant healthcare microservices within a growing ecosystem.

Responsibilities

~1 min read

→Design, develop, and maintain backend microservices across the healthcare platform ecosystem using Java/Kotlin and JVM-based frameworks (Spring Boot 3.x, Quarkus, Ktor)
→Architect multi-tenant data models and implement data isolation patterns across relational databases
→Design and optimize database schemas, write migrations (Flyway, ORM-native), and tune query performance
→Develop asynchronous messaging workflows using ActiveMQ for inter-service communication
→Containerize services with Docker and maintain CI/CD pipelines via GitHub Actions
→Work with AWS infrastructure including EC2, SSM Parameter Store, S3, and Bedrock for AI/LLM integrations
→Maintain and modernize legacy codebases (e.g., Spring Boot 2.x / Java 8) alongside modern stacks

Requirements

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5+ years of backend development on the JVM platform (Kotlin strongly preferred; Java acceptable)
English: Professional proficiency (Spoken & Written)
Multi-framework proficiency: production experience with at least two of Ktor, Spring Boot, or Quarkus
Relational database expertise: PostgreSQL and/or MariaDB/MySQL, including schema design, migrations, and query optimization
ORM proficiency with Hibernate/JPA, Ebean, or Panache
REST API design and implementation following industry best practices
Docker containerization and CI/CD pipeline management with GitHub Actions
AWS fundamentals: hands-on experience with EC2, SSM Parameter Store, and S3
Message broker experience with ActiveMQ, RabbitMQ, or similar technologies
Git-based workflow with strong code review discipline

Demonstrated experience with microservices architecture, including service decomposition, boundaries, and distributed system patterns
Multi-tenant application design and data isolation strategies
Complex state machine and Workflow Orchestration Design
Experience maintaining database migration systems across long-lived, evolving projects

Ability to work independently on features end-to-end across multiple services
Comfort context-switching between different frameworks and codebases throughout the workday
Security-conscious mindset appropriate for a HIPAA-regulated environment handling protected health information (PHI)
Willingness to learn healthcare-specific regulations and compliance requirements

Nice to Have

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Healthcare domain knowledge: HIPAA compliance, PHI handling, and audit trail design
Healthcare interoperability standards: HL7 v2.x, FHIR R5, DICOM, and DICOM-Web
SOC 2 compliance knowledge: experience with SOC 2 audit processes, controls implementation, and continuous compliance monitoring.
AI/LLM integration: experience with AWS Bedrock or comparable platforms
Integration frameworks: Apache Camel or similar message routing solutions