Full Stack Engineer

Senior Full Stack Engineer (Ruby on Rails) | Remote | Up to £100k DOE

Must Have Strong Ruby on Rails Experience!

We're partnering with an ambitious SaaS business that is entering a pivotal stage of growth and transformation.

Having successfully built a profitable software platform serving thousands of customers globally, the business is now bringing technology ownership fully in-house and building an internal engineering function.

This is an opportunity to join at an exciting stage of the company's journey and play a key role in shaping the future of the technology organisation. You'll work closely with senior leadership, helping establish engineering standards, technical direction, development processes and best practices as the team continues to grow.

About the Business

• Established SaaS platform with strong recurring revenue
• Serving thousands of customers globally
• Significant growth plans over the next five years
• Product-led organisation operating in the health, fitness and coaching technology sector
• Strong leadership team with experience scaling successful consumer and technology businesses
• Long-term focus on AI adoption, automation and data-driven product development

What You'll Be Doing

As a senior member of the engineering team, you'll have broad ownership across product development, platform improvements and technical decision-making.

• Taking ownership of core product development across backend, frontend and infrastructure
• Helping establish engineering standards, processes and best practices
• Driving improvements in testing, deployment and documentation
• Contributing to architecture and platform modernisation initiatives
• Supporting cloud migration and infrastructure evolution
• Working closely with product and design teams to deliver new features
• Mentoring engineers as the team grows
• Helping shape the company's AI-assisted engineering strategy

Technology Stack

Ruby on Rails, Vue.js, PostgreSQL, Redis, Sidekiq, AWS, Docker, GitLab, Cloudflare

What We're Looking For

Essential Experience

• Strong commercial experience building and maintaining production Ruby on Rails applications
• Full-stack development capability across backend and frontend technologies
• Experience working with PostgreSQL in high-volume production environments
• Strong understanding of cloud infrastructure and AWS services
• Experience with Docker and modern deployment pipelines
• Solid knowledge of REST APIs, authentication and system integration
• Strong automated testing mindset, ideally with RSpec and TDD practices
• Experience owning features and services end-to-end
• Ability to operate autonomously in a fast-moving environment

Highly Desirable

• Sidekiq and background job processing expertise
• Stripe or payment platform integrations
• Event-driven architectures
• WebSockets / real-time applications
• AI-assisted development workflows and tooling
• Experience scaling SaaS platforms
• Startup or scale-up experience

The Ideal Person

You'll likely thrive here if you are:

• Product-minded and commercially aware
• Comfortable working with ambiguity
• Naturally curious and self-directed
• Strong communicator who can explain technical concepts to non-technical stakeholders
• Excited by ownership and accountability
• Interested in helping shape engineering culture and technical standards
• Passionate about modern software engineering practices

What's on Offer?

• Salary up to £100,000
• Bonus scheme
• Unlimited annual leave
• Hybrid working
• Opportunity to influence technical direction and engineering standards
• Work on complex platform, infrastructure and migration projects
• Join a growing SaaS business with ambitious expansion plans

If you're an experienced full-stack engineer who enjoys taking ownership, solving complex technical challenges and working in a collaborative, fast-moving environment, we'd love to hear from you.