Senior Software Engineer

About Loyal

Loyal is a clinical-stage veterinary medicine company developing drugs intended to extend the lifespan and healthspan of dogs. Our mission is to help dogs live longer, healthier lives.

We've already achieved significant milestones on our path to earning FDA approval for the first lifespan extension drug for any species. We have three products in our pipeline and are on track for FDA conditional approval within the next year.

Loyal is a well-funded startup in growth mode. Our team includes scientists, veterinarians, engineers, operators, and creatives. This role will play a key role in supporting our growth strategies.

About The Role

As a Senior Software Engineer at Loyal, you'll shape how we support veterinarians and dog owners as you help build and launch our eCommerce platform. This is more than a simple storefront — it's a tightly integrated application that directly supports our mission of helping dogs live longer, healthier lives.

You'll work across the stack to build thoughtful, scalable features that balance immediate product needs with long-term technical health. You'll bring strong engineering fundamentals, a product-focused mindset, and a passion for creating user experiences that are polished, performant, and trustworthy.

This is a high-impact role for someone who thrives in a collaborative, fast-paced environment and is motivated by building systems that serve real human (and canine!) needs.

You will be reporting to our VP of Engineering.

Your daily work will include:

• Collaborate across the stack (Next.js, TypeScript, React, Postgres/Neon, Medusa.js, Vercel, AWS, Terraform, K8s) to build and ship performant, user-facing web applications
• Own features from inception to deployment, with a focus on reliability, usability, and maintainability
• Write clean, well-tested code
• Perform code reviews to help drive best practices across the team
• Help shape architectural direction and contribute to scalable, secure, and maintainable system design
• Accelerate delivery and improve developer ergonomics through thoughtful use of AI-tooling
• Participate in an on-call rotation to ensure platform stability and meet or exceed SLA commitments

Loyal benefits:

• Full-coverage health insurance — medical, dental and vision — for you and your dependents
• $1,000 home office equipment stipend
• $1,200/year learning budget for books, courses, etc.
• $250/month wellness budget for gym, cleaners, spa, food, etc.
• All 3-day weekends are turned into 4-day weekends 🎉
• Unlimited vacation and paid holidays
• Paw-ternity leave — adopt a dog and get a day off with your new family member 🐶
• Competitive salary
• Company equity options grant for new hires

Salary Range: $180,000 - $220,000

Loyal is founded and led by a first-gen female CEO and is proud to be an equal opportunity employer. We do not discriminate against applicants based on gender, race or color, ethnicity or national origin, age, disability, religion, sexual orientation, gender identity or expression, veteran status, or any other applicable characteristics protected by law.

Our values

Lean into moonshots

We don't settle for incremental change. We have the bravery to take risks and shoot for the impact we want to have.

Opportunity is at the intersection

We lean into combining disciplines, expertises, and perspectives not normally adjacent. We design our organization to facilitate cross-pollination and cross-collaboration. We reject silos.

Expertise without ego

Titles do not determine who has a voice. We work on hard technical problems and have a ton of fun while at it.

Learning by doing

Our path is novel and many things we are doing have never been done before. We lean into MVPs and are open to unexpected outcomes.

Lead with context

We value leading with context. We equip people with the context and background necessary to make their own decisions and act in the best interest of Loyal. We empower teams to succeed.

Empathy and respect for all life

Our patients are not just numbers. Our work is intentional, thoughtful, and guided by respect for life. We take our responsibility to pets and pet parents seriously.