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June 20, 2026

Senior Full Stack Engineer (Core Engine)

Senior • Hybrid

Concord, CA

About the Role

This is an opportunity to join a growing company transforming healthcare technology through modern electronic billing, payments, and secure data exchange solutions across the Property & Casualty and Healthcare industries.

As a Senior Full Stack Development Engineer, you will play a key role in designing, building, and maintaining scalable applications and APIs that power mission-critical healthcare and insurance workflows. This role focuses on backend architecture, service development, data processing, and system integration, ensuring high performance, reliability, and maintainability across platforms. You will collaborate across teams and leverage AI-assisted development tools and modern testing approaches to deliver reliable, scalable systems.

This role is central to building and maintaining backend systems that power core products and integrations, ensuring complex healthcare and insurance transactions are processed accurately, efficiently, and securely at scale.

This is a hybrid role based in Concord, California, with an expectation of working in the office at least two days per week.

What You'll Do

  • Design, develop, and maintain backend services, APIs, and core platform components
  • Build scalable systems using Java and Spring Boot or similar frameworks
  • Develop and support RESTful APIs and service integrations
  • Participate in system design and architecture discussions
  • Collaborate with product, implementation, QA, and engineering teams
  • Support complex data processing and integration workflows
  • Ensure systems are secure, reliable, and performant under high transaction volumes
  • Use AI-assisted development tools to improve productivity and code quality
  • Contribute to CI/CD pipelines and DevOps practices
  • Write clean, maintainable, and testable code with strong test coverage
  • Enhance system observability through logging and monitoring improvements
  • Troubleshoot production and integration issues

What You'll Need

  • Bachelor's degree in Computer Science or related field, or equivalent experience
  • 8+ years of backend software engineering experience
  • Strong experience in Java and backend development
  • Understanding of RESTful APIs and distributed systems
  • Experience with Spring Boot or similar frameworks
  • Strong SQL skills and familiarity with NoSQL databases
  • Experience with AWS, Azure, or GCP
  • Experience with AI-assisted development tools
  • Experience with Docker and Kubernetes
  • Familiarity with CI/CD tools such as Jenkins
  • Strong knowledge of Agile methodologies
  • Experience building scalable and maintainable backend systems

Nice to Have

  • Experience in healthcare, insurance, or financial services
  • Experience with high-volume transaction processing
  • Experience with event-driven architectures (Kafka, RabbitMQ)
  • Familiarity with Elastic Cloud
  • Experience with Playwright or Postman
  • Knowledge of observability tools (ELK, Prometheus, Datadog, Grafana)
  • Experience with HIPAA / PHI / PII compliance requirements