Senior Full-Stack Software Engineer - AI

Treatwell; Town of Italy (NY); Remote; USD 100,000 - 130,000; Full time

Job summary

A leading salon management software company in New York is seeking a Full-stack Software Engineer to join their AI Engineering team. The role involves designing and building AI-powered solutions and ensuring high quality code in a collaborative Agile environment. Ideal candidates should have experience with Node.js, React, and AI services. This position offers a 100% remote working opportunity, 28 days of holiday, and monthly Treatwell vouchers.

Benefits

28 days holiday plus bank holidays

Monthly Treatwell vouchers

Access to mental health support platform

100% remote position with flexible working

Qualifications

• Experience with LangChain, LLM orchestration, or building AI-powered features.
• Strong experience in back-end development with Node.js.
• Solid understanding of RESTful API design and third-party integrations.

Responsibilities

• Design, develop, and maintain scalable services and applications.
• Collaborate with product managers, designers, and engineers in an Agile environment.
• Integrate and maintain robust connections with third-party APIs.

Skills

LangChain

LLM orchestration

Node.js

React

RESTful API design

Problem-solving

Tools

Gitlab CI/CD

AWS

Job description

We’re looking for talented, friendly and adaptable Full-stack Software Engineers to help fast-track the integration of AI within our products, both for internal and external use.

In this role, you’ll join Treatwell’s new AI Engineering team, where you’ll design and build AI-powered, full-stack solutions—everything from internal automation to customer-facing features. Your core mission will be to integrate intelligence into our ecosystem (linking platforms like Salesforce, Hubspot, Confluence and our own products) to streamline internal workflows and elevate the experience for every Treatwell customer.

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.

As a full-stack engineer you will help the team to ensure they continuously deliver high quality code, so that they can meet and exceed their goals. You will collaborate with the other members of the team, contributing to build robust integrations with third party services.

You will help the team to define and roll out an AI adoption strategy. You will play a crucial role in exploring, evaluating and integrating LLM and AI services / methodologies, adopting and orchestrating them in the team’s products.

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.

Responsibilities

• Design, develop, and maintain scalable services and applications in Node.js (TypeScript).
• Collaborate with various stakeholders: product managers, designers, and other engineers in an Agile environment.
• Write clean, maintainable, and well-tested code following good engineering practices.
• Integrate and maintain robust connections with third-party APIs and services.
• Participate in code reviews, architectural decisions, and continuous improvement initiatives.
• Ensure performance, quality, and responsiveness of applications.
• Apply good UX and technical design principles to embed quality in the software development process.

About you

• Experience with LangChain, LLM orchestration, or building AI-powered features.
• Experience with AI services (e.g., OpenAI, Hugging Face, AWS Bedrock, vector databases).
• Proven experience as a Software Engineer.
• Strong experience in back-end development with Node.js or a similar JavaScript runtime.
• Experience with other languages/frameworks on the backend (e.g., Python, Java / SpringBoot) and on the frontend (we mainly use React).
• Solid understanding of RESTful API design, OAuth, and integrating third-party APIs.
• Excellent problem-solving and communication skills.
• Familiarity with cloud platforms, especially AWS.

Nice to have

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

About Treatwell

Hi, we’re Treatwell. Nice to meet you.

We’re a team of 700 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 50,000 salon partners across 13 countries, processing over 8 million bookings every month. And….breathe.

But we’re not done yet. We’re on an exciting journey to digitally revolutionise the hair and beauty community.

If this excites you, we might just have the role for you.

We’ll treat you with

• 28 days holiday, plus bank holidays
• Monthly 40 EUR Treatwell vouchers so you can treat yourself too
• Access to a dedicated mental health support platform
• 100% remote position with flexible working

Equal Ops

Treatwell is an ‘Open to All’ employer and warmly welcomes everybody to the team. We are committed to making reasonable adjustments to the recruitment process as required. Please add any adjustment requests to your application.