About Us: As a leading group of companies, the ECA International Group stands as a global frontrunner in simplifying international mobility. Our collective vision is to make a positive impact by delivering exceptional products and services to our prestigious list of large enterprise clients. Our global presence across the UK, EU, Hong Kong, Australia, and the US offers our team a world of opportunities, and our commitment to innovation ensures that you will be at the leading edge of your field. We love to invest in our people’s success and development pathways, creating a diverse and inclusive community where your unique talents shine. Your work here has a global impact, and we prioritise work-life balance, offering flexibility to enable you to perform your best. Join us to experience a rewarding career where your potential is celebrated, and your journey to excellence begins. About the Role: We are looking for a versatile and forward-thinking Full Stack Engineer to help drive our disruptive enterprise SaaS platform. You will deliver cutting-edge user experiences by blending traditional and AI-driven approaches, including natural language and voice interfaces. Guided by our “AI First” principle, you’ll adopt open-source solutions where possible and build custom code only when it adds clear value. Operating in a high-energy, fast-paced environment, you’ll collaborate closely with the Full Stack Technical Lead and other cross-functional team members to deliver impactful features with outstanding code quality, AWS-based architectures, and Agile best practices. Requirements Key Responsibilities Full Stack Development: Implement features across the stack (front-end, back-end, data layers) using JavaScript (Node.js), C#, .NET Core, and React. Build and maintain scalable APIs, microservices, and user-facing components, integrating advanced AI functionality, open-source tools, and intuitive UIs. AI First & Open-Source Integration: Incorporate AI-driven tooling, NLP, and voice technologies to deliver faster, smarter user experiences. Leverage open-source frameworks and libraries to rapidly deliver stable, maintainable solutions. AWS & Cloud Architecture: Develop, deploy, and manage solutions on AWS, ensuring reliability, security, and cost-effectiveness. Utilise AWS services and best practices to build scalable infrastructure as code and maintain robust CI/CD pipelines. Quality & Best Practices: Write well-tested, maintainable code that follows coding standards and meets performance, security, and scalability requirements. Participate in code reviews and contribute to continuous improvement initiatives. Agile Collaboration: Work closely with the Full Stack Technical Lead, product managers, UI/UX designers, and other developers in an Agile environment. Participate in stand-ups, sprint planning, retrospectives, and other Agile ceremonies, embracing a culture of transparency and rapid iteration. Continuous Learning & Innovation: Stay current with emerging technologies, frameworks, AI capabilities, and best practices. Proactively explore new approaches, contribute ideas for improvements, and help drive innovation in our solutions. The Ideal Candidate: Experience & Qualifications Essential: Strong experience building web applications with JavaScript (Node.js), C#, .NET Core, and React. Proven experience designing and maintaining cloud-based architectures on AWS, including serverless or container-based approaches. Familiarity with microservices architectures, RESTful APIs, CI/CD pipelines, and infrastructure as code (e.g., Terraform). Experience working in Agile environments, delivering features iteratively and responsively. Desirable: Exposure to Remix, Tailwind CSS, or other modern frameworks and libraries. Familiarity with AI/ML concepts, natural language processing, or AI-driven coding assistants. Skills & Behaviours: Outcome-Driven & Pragmatic: Focuses on delivering tangible results and adds value by making smart technology choices. Adaptable & Curious: Eager to pick up new tools, frameworks, and AI-driven methods to enhance development efficiency and product quality. Quality-Oriented: Pays attention to details, ensuring code reliability, maintainability, and high performance. Team-Oriented: Communicates clearly, collaborates effectively, and supports team members to achieve shared goals. Continuous Improver: Regularly seeks ways to optimise code, processes, and user experiences, contributing to a culture of ongoing improvement. Benefits What’s in it for you Enhanced Stakeholder Pension Contribution 25 days annual leave Health, Life Insurance EAP Wellbeing Support Eligible for Annual Bonus Scheme Long Service Awards ️♀️ ClassPass Membership Enhanced Family Leave Up to £1,000 per year for personal development & training Season Ticket Loan Flexible/hybrid Work Environment Cycle to Work Scheme Free Eye Test Our Team and Culture We are a super friendly team that thrives on collaboration and supporting each other. We cultivate an environment where everyone feels valued and empowered to contribute their best work, helping us to realise our ambitious growth goals and mission. Our hybrid working structure includes spending around two days a week at our Head Office in Holborn, London, in a great space filled with creative, colourful. Need a change of scenery? Our breakout areas have comfortable seating and cool décor where you can work in your own space. Not to mention, being in the hub of the West End, we’re surrounded by many cafes and restaurants and are just a hop, skip, and a jump from the tube.