Principal Software Engineer – AI, Platform

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Koala Health

WebsiteLinkedInAll Job Openings

11 - 50 employees

🛍️ eCommerce

⚕️ Healthcare Insurance

🧘 Wellness

eCommerce • Healthcare Insurance • Wellness

Koala Health is a company dedicated to simplifying pet medication by providing a seamless service that verifies prescriptions, sorts and packages medications, and delivers them directly to customers without any service or shipping fees. Specializing in vet-approved medications and health products, Koala Health ensures pet owners have easy access to necessary treatments such as heartworm prevention, flea and tick control, allergy relief, and digestive health supplements. With a focus on convenience and reliability, Koala Health partners with veterinarians to ensure pets receive the best care possible. Customers can enjoy significant savings on their first orders with various promotional codes and join a community committed to the wellbeing of pets.

📋 Description

• Architecting systems that scale with the business. • Raising engineering quality and operational excellence. • Accelerating development velocity through effective use of AI. • Establishing best practices for AI-assisted and agentic software development. • Mentoring engineers and helping the team make better technical decisions. • Leveraging technology to simplify complex operational workflows and improve customer experiences. • Define and evolve architectural standards across customer-facing and operational systems. • Lead the design of complex software systems, integrations, workflows, and data models. • Drive long-term technical strategy while balancing short-term business priorities. • Identify technical risks and opportunities early and develop pragmatic plans to address them. • Lead architectural reviews and guide major technical decisions across teams. • Establish patterns that improve reliability, maintainability, scalability, and developer productivity. • Champion AI-assisted software development across the organization. • Define best practices for leveraging LLMs in coding, testing, debugging, documentation, code review, and operational workflows. • Design and build agentic systems that automate engineering and business processes. • Evaluate emerging AI technologies and determine where they can create measurable value. • Help iterate on Koala's approach to AI-enabled software development and organizational productivity. • Ensure AI systems are implemented responsibly, securely, and with appropriate operational safeguards. • Raise the bar for code quality, testing, documentation, and operational readiness. • Drive improvements in CI/CD, deployment safety, developer experience, and engineering workflows. • Establish standards for observability, monitoring, alerting, and incident response. • Introduce tooling and automation that improve engineering velocity without sacrificing quality. • Foster a culture of ownership, continuous improvement, and technical excellence. • Partner closely with Product, Operations, Pharmacy, Customer Care, Growth, and Finance teams to understand business challenges and design effective solutions. • Translate ambiguous business requirements into scalable technical approaches. • Lead initiatives from concept through implementation, rollout, and operational support. • Ensure technical decisions align with company goals and customer outcomes. • Help mentor engineers across all experience levels. • Provide thoughtful guidance through design reviews, architecture discussions, and code reviews. • Help develop engineering processes that scale as the organization grows. • Serve as a trusted technical advisor to cross-functional stakeholders. • Influence engineering culture through technical leadership rather than organizational authority.

🎯 Requirements

• Bachelor's degree or equivalent • 10+ years of professional software engineering experience building and operating complex, production-scale systems. • Expert-level Ruby on Rails experience with strong knowledge of modern web application architecture, distributed systems, APIs, data modeling, and cloud platforms (AWS, GCP, or Azure). • Proven experience leading technical architecture, driving engineering direction, mentoring engineers, and delivering reliable, observable, high-performing systems. • Strong product and business judgment with excellent written and verbal communication skills. • Deep expertise with modern AI development, including LLMs, AI-assisted coding tools (e.g., Claude, Codex, GitHub Copilot), and building AI-powered products, agents, automation, or developer workflows. • Understanding of agent architectures, retrieval systems, tool-calling, evaluation frameworks, and AI system reliability, with a demonstrated ability to use AI to improve engineering velocity and team effectiveness. • Authorization to work in the United States (Koala is not able to sponsor visas for this role).

🏖️ Benefits

• Medical, dental, and vision insurance with partial dependent coverage • Generous PTO and a 401(k) plan • Competitive base salary with performance-based incentives • Meaningful mission helping modernize pet health • Remote-first culture built on flexibility and trust