Full Stack Engineer (Backend Heavy)

QuantumLoopAI; Greater London; Remote; GBP 14,000 - 22,000; Full time

Benefits offered by this job

Remote work from India aligned to UK/€

Flexible start date

Professional development including CPD

Opportunity to shape platform infra

Job summary

QuantumLoopAI is seeking a Full Stack Engineer (Backend Heavy) to join our India-based development team. You will own core backend infrastructure and APIs powering EMMA, while collaborating with our UK-based teams.

This is a hands-on role with responsibility for scale, security and performance across the stack. You will design, build and maintain scalable backend services using Node.js/TypeScript/NestJS, and craft React/Next.js UI components to complement backend capabilities.

Qualifications

• 2–3+ years of experience building scalable backend systems using Node.js and TypeScript.
• Frontend experience with React/Next.js and TypeScript is a plus.
• Experience with RESTful APIs and/or GraphQL endpoints is expected.

Responsibilities

• Architect, develop and optimise scalable backend services in a microservices setup.
• Build responsive UI components with React/Next.js to complement backend work.
• Design and optimise MySQL databases for high performance and availability.
• Contribute to CI/CD pipelines using Azure DevOps and Docker.
• Write clean, well-documented code and perform thorough code reviews.
• Collaborate with UK-based product and engineering teams to align on requirements.
• Mentor teammates on backend/frontend development best practices.
• Promote secure coding practices and robust API security.

Skills

Node.js

TypeScript

NestJS

React

Next.js

MySQL

Azure

Docker

CI/CD

API design

Security

Tools

Azure DevOps

Docker

GraphQL

Job description

ABOUT QUANTUMLOOPAI

QuantumLoopAI is one of the UK's fastest-growing healthtech companies. Our AI-powered platform, EMMA, is used by hundreds of organisations across the UK to manage communications, automate workflows and deliver better outcomes through intelligent automation. Backed by leading investors and scaling rapidly ahead of our Series A, we are building the infrastructure that will define the next generation of AI-driven service delivery.

ABOUT THE ROLE

We are looking for a Full Stack Engineer (Backend Heavy) to join our growing India-based development team. You will work across the full stack but spend the majority of your time designing, building and scaling the backend services and APIs that power EMMA. This is a hands-on engineering role where you will take ownership of core platform infrastructure, collaborate with our UK-based product and engineering teams, and help us scale a system that is growing fast.

WHAT YOU WILL DO

• Architect, develop and optimise scalable, secure backend services using Node.js, TypeScript, and NestJS within a distributed microservices architecture.
• Build responsive, intuitive user interfaces using React, Next.js and TypeScript to complement backend capabilities.
• Design, optimise and maintain MySQL databases for high-performance, high-availability applications.
• Contribute to CI/CD pipelines and automate build, test and deployment processes using Azure DevOps and Docker.
• Write high-quality, maintainable code and conduct thorough code reviews to uphold engineering standards across the team.
• Collaborate with Product Owners, Business Analysts, UX Designers and fellow engineers to understand requirements and deliver robust end-to-end solutions.
• Mentor team members on backend and frontend development best practices, with a focus on building scalable and efficient systems.
• Advocate for best practices in software development, DevOps and agile methodologies to ensure a secure, reliable and performant platform.

ESSENTIAL

• Minimum 2-3 years of experience building scalable, distributed backend systems using Node.js and TypeScript.
• Proficiency in developing user interfaces using React, Next.js and modern frontend frameworks.
• Strong understanding of distributed systems, microservice architecture and API design.
• Expertise in creating secure, scalable RESTful APIs and/or GraphQL endpoints.
• Experience building responsive UIs using React, Next.js, Redux and TypeScript, with solid understanding of component-based architecture and state management.
• Proficiency in designing and optimising MySQL databases for high-performance applications.
• Hands-on experience with Azure or similar cloud platforms for hosting, scaling and monitoring applications.
• Familiarity with CI/CD pipelines using tools like Azure DevOps and containerisation with Docker.
• Deep understanding of secure coding practices, authentication mechanisms and API gateways.
• Strong analytical skills with the ability to break down complex problems into atomic units of work.
• Excellent written and verbal communication skills, comfortable collaborating asynchronously with a UK-based team.
• Comfortable working remotely and aligning to UK business hours (9:00 AM to 6:00 PM GMT/BST).

DESIRABLE

• Experience working on high-traffic platforms or products serving large user bases at scale.
• Experience with Ionic or similar hybrid mobile application development frameworks.
• Advanced Azure capabilities such as Kubernetes, CosmosDB and API Management.
• Familiarity with Firebase for notifications and real-time features.
• Proven ability to mentor junior team members and lead by example.
• Experience with NestJS or similar backend frameworks.

LOGISTICS

• Education: We value skills and experience over formal qualifications.
• Working arrangements: Fully remote from India, aligned to UK business hours (9:00 AM to 6:00 PM GMT/BST).
• Start date: Flexible.

WHAT WE OFFER

• Competitive package depending on experience
• Potential share options
• Professional development including conference attendance and CPD support
• The opportunity to shape the platform infrastructure at one of the UK's fastest-growing healthtech companies
• Remote working with a collaborative, supportive team

HOW WE ARE DIFFERENT

• Impact over optics. We measure success by real outcomes, not busy work
• Transparency. Open communication, honest feedback, shared context
• Ownership. You will have real autonomy to shape your work and our platform
• Learning. We are building something new, and we learn from every experiment

DIVERSITY AND INCLUSION

We believe diverse teams build better products. We welcome applications from candidates of all backgrounds, and we are committed to creating an inclusive environment where everyone can do their best work. If you are excited about this role but do not meet every requirement, we would still love to hear from you.

RECRUITMENT SAFETY NOTICE

QuantumLoopAI will never ask candidates for payment or sensitive financial information during the recruitment process. All official communications come from @quantumloopai.com email addresses.