Ruby on Rails Engineer

About Wawa Fertility

17% of adults worldwide need help to have a baby and by 2050, that number will reach nearly 50%. Yet only 2% can access fertility treatment today. That’s not a gap; it’s a canyon. And we’re building the bridge.

London (Paddington)

• Hybrid (3 days in‑office)
• Full‑time

"To make fertility care accessible to everyone who needs it because the right to start a family shouldn’t depend on where you live or what you earn."

You’re a builder who takes ownership. As a Series A startup, we’re highly collaborative and move fast. There’s no long permission queue or unnecessary bureaucracy, just a mission‑driven team working together to ship meaningful features.

You don’t just write code; you’re a product engineer who crafts solutions that meet and drive customer outcomes. You care about the humans on the other end of every feature—the nurse checking scan results at 7 am, the patient anxiously refreshing their app. Great design and snappy UX aren’t nice‑to‑haves; they’re non‑negotiables.

Autonomy energises you. You set your own timelines, own your deliverables, and keep the team in the loop without being asked. You fail fast, learn faster, and never repeat the same mistake twice.

Rails 8 (Hotwire, Phlex, Tailwind), React Native for mobile apps, Postgre

SQL, AWS, Grafana, Sentry, and Meta Base for BI. Over 70% of our codebase is AI‑influenced, from PR reviews to design reviews and internal documentation.

• Build and ship features end‑to‑end across the full stack.
• Solve genuinely complex problems daily, including healthcare data, real‑time scheduling, and multi‑country compliance.
• Collaborate with designers and clinicians to deliver interfaces that are fast, intuitive, and beautiful.
• Take ownership of your domain, spotting opportunities and running with them.
• Shape the architecture and engineering culture of a product used by clinics across 14+ countries.

• A deep appreciation of the Rails Way and the chops to build elegant, scalable solutions.
• Experience shipping production features in Ruby on Rails (bonus points for Hotwire, Turbo, or Stimulus).
• Transparent and intellectually honest communication; you say what you mean and mean what you say.
• A hunger for high‑tempo environments where speed and quality are balanced through individual responsibility.
• An eye for great design and a drive to create experiences that are as beautiful as they are functional.
• A willingness to fail fast and learn faster—two‑way doors are your favourite kind of doors.

Help solve the global fertility crisis. Every feature you ship makes care more accessible for families worldwide.

Share in the company’s success. Your contributions are reflected in meaningful equity and real upside.

No red tape and no waiting for permission. You’ll define, build, and ship — with direct impact on the product and the mission.

Develop professionally while shaping the future of healthcare technology. Wear many hats and level up fast.

Join the founding crew. Help set the standards, culture, and direction of the company for years to come.

3 days a week at our Paddington office, with flexibility built in. We trust you to do great work wherever you are.

Because we’ve already found strong product‑market fit. Clinics in 14+ countries rely on us every day. Our platform handles everything from embryology records to patient payments, and we’re just getting started.

Because we’re a small team doing enormous things. Because you’ll never wonder whether your work matters here. And because helping millions of families start is the kind of purpose that makes Monday mornings feel different.

Big challenges. Bigger impact. The best colleagues you’ll ever work with.

wawa fertility is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all team members.