[Hiring] AI Software Engineer @Treatwell

Role Description

We’re looking for a skilled and adaptable Full-stack Software Engineer who takes an AI-first approach to software development, using tools such as Claude Code and Codex to accelerate delivery while maintaining high engineering standards. You’ll join Treatwell’s AI Engineering team and work closely with our Chief AI Officer. Your focus will be on building internal tools and automating workflows, alongside customer-facing products and features. You’ll work directly with the people using these tools to understand their needs, build working prototypes quickly and improve them through feedback.

We are seeking a software engineer who is comfortable with working in a cross-functional Agile team, with proven experience in designing/building frontend and backend applications, continuously delivering clean, maintainable and well tested code. We want to do great work and to be known for it.

You’ll use AI throughout the development process:

• Breaking down problems
• Guiding coding agents
• Iterating on implementations
• Reviewing and testing the results

We value hands-on experimentation, short feedback loops and the judgment to know when to change direction or turn a promising prototype into reliable software. You’ll also build integrations with our products and third-party platforms, adding LLMs and other AI capabilities where they solve a real user need. We don’t just ship features; we’re building a Europe-wide platform & team, and know we need to do great work to succeed. To achieve this, we need passionate people who love being challenged, learning new things, and growing with their team.

You will be responsible for:

• Designing, prototyping, developing and maintaining full-stack applications, primarily using TypeScript, Node.js and React.
• Choosing the tools and languages that best fit the problem, and adapting quickly as requirements evolve.
• Working closely with the Chief AI Officer, internal users, product managers, designers and engineers to identify practical problems, test ideas and deliver useful tools in short iterations.
• Using AI coding tools and agent workflows extensively to accelerate implementation, debugging and testing, while taking ownership of code quality, correctness and maintainability.
• Integrating and maintaining robust connections with third-party APIs and services.
• Participating in code reviews, architectural decisions, and continuous improvement initiatives.
• Moving successful prototypes into dependable everyday use, with appropriate testing, performance, security and error handling.
• Ensuring quality is embedded in the software development process.

Qualifications

• At least 2 years of proven experience as a Software Engineer.
• Hands-on experience using AI coding assistants and agents as a core part of your development workflow.
• Practical familiarity with integrating LLM APIs and AI services into applications.
• Strong experience in back-end development with Node.js or a similar JavaScript runtime.
• Experience building frontend applications with React or a comparable framework.
• Solid understanding of RESTful API design, OAuth, and integrating third-party APIs.
• Strong problem-solving and communication skills.
• Comfort with ambiguous requirements and a practical approach to experimentation.

Requirements

• Experience with TDD/BDD and writing test suites (e.g., using Jest, Cypress).
• Familiarity with agile methodologies and DevOps best practices.
• CI/CD pipeline experience (we use Gitlab CI/CD).
• Familiarity with cloud platforms like AWS.

Benefits

• 28-days holiday, plus bank holidays
• Monthly €40 Treatwell vouchers
• Mental health support through our partnership with Plumm
• Growth funds for you to develop and grow with your team
• Salary Range: €30,000 – €50,000 gross annual salary

Company Description

Hi, we’re Treatwell. Nice to meet you. We’re a team of 800 passionate and brilliantly talented people across Europe. We’re the industry’s smartest salon management software, all connected to Europe’s leading bookings platform, working with over 90,000 salon partners across 14 countries, processing over 23 million bookings per year. We’re on an exciting journey to digitally revolutionise the hair and beauty community.