Zartis

Principal Full Stack Engineer

Zartis

full-time

Posted on:

Origin:  • 🇮🇪 Ireland

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Job Level

Lead

Tech Stack

AWSCloudDistributed SystemsJavaScriptPythonReact

About the role

  • Zartis is a digital solutions provider working across technology strategy, software engineering and product development, partnering with firms across multiple industries.
  • Principal software engineer to work on a project in the healthcare industry as part of a distributed team.
  • Lead design and implementation of service-oriented architectures, breaking down monoliths into scalable services.
  • Develop high-performance data pipelines and APIs for real-time and batch processing.
  • Build responsive web applications and internal tools with modern frontend frameworks.
  • Collaborate with product and engineering leadership on architecture and system optimization.
  • Own and drive technical projects end-to-end, ensuring business alignment and scalability.
  • Improve observability, monitoring, and reliability across services, infrastructure, and frontend.
  • Mentor and upskill engineers, fostering a strong full-stack engineering culture.
  • Apply best practices in service design, data consistency, security, and user experience to ensure compliance.

Requirements

  • 6+ years in full-stack development with strong backend (service-oriented architectures) and frontend (modern frameworks) experience.
  • Proficient in Python for backend; skilled in React or similar JavaScript frameworks for frontend.
  • Deep knowledge of RESTful and event-driven service design and building responsive, user-friendly web apps.
  • Experienced in designing and optimizing data-intensive apps involving large-scale data movement and transformation, with effective UI presentation.
  • Strong expertise in performance optimization, reliability engineering, and security across the stack.
  • Proven record of mentoring engineers and driving best practices in service/API and frontend development.
  • Hands-on with observability, monitoring, and operational excellence in distributed systems and web apps.
  • Experienced with relational databases, cloud platforms (AWS preferred), and modern frontend build/deployment pipelines.
  • Familiar with data consistency, eventual consistency, database performance tuning, and frontend state management.
  • Nice to have: Experience leading major architectural transformations (e.g., monolith-to-SOA).
  • Nice to have: Background in regulated industries such as healthcare or fintech.
  • Nice to have: Familiarity with compliance standards (HIPAA, SOC2, etc.) with strong focus on privacy and security.
  • Nice to have: Experience using AI-enabled development tools (e.g., Cursor, Claude) to accelerate productivity.