Location: UK Remote Salary: £55,000 - £65,000 + exceptional benefits! Our client is seeking an experienced Senior Engineer with a strong passion for product development to join their innovative SaaS application team. This role is pivotal in shaping and delivering a fully serverless platform built on AWS and Azure, utilising modern technologies such as React for the front-end and TypeScript with Node.js for the back-end. The successful candidate will thrive on creating intuitive, responsive, and visually engaging features that elevate the user experience. This position offers a unique opportunity to influence product design decisions and drive technical excellence across the engineering department. If you are driven by developing high-quality, user-centric features and want to play a crucial role in a dynamic environment, we want to hear from you. Key Responsibilities: Design and implement complex front-end features using modern JavaScript frameworks and libraries. Collaborate with UX/UI designers and stakeholders to create seamless user experiences. Optimise performance, accessibility, and cross-browser compatibility. Contribute to the evolution of our architecture. Participate in product design discussions, providing technical insights and feasibility assessments. Implement and maintain responsive design principles across the application. Promote best practices in development. Conduct code reviews and provide constructive feedback to team members. Stay updated with the latest technologies and evaluate their potential application in our product. Contribute to the continuous improvement of our development processes and tooling. What You've Got: Expert-level proficiency in JavaScript/TypeScript and modern front-end frameworks (e.g., React, Vue, or Angular). Strong understanding of web technologies (HTML5, CSS3, WebSockets) and browser APIs. Proficient in responsive design and cross-browser compatibility techniques. Knowledge of RESTful APIs and experience integrating front-end with back-end services. Understanding of web security best practices. Excellent problem-solving skills and attention to detail. Strong communication skills, able to explain complex technical concepts to non-technical stakeholders. Proactive in seeking opportunities to improve processes and systems. Ability to work effectively in an agile, collaborative environment. Required: Strong experience in software development for SaaS applications. Extensive experience with JavaScript and at least one modern front-end framework. Proven track record of delivering high-quality, user-centric features in a SaaS product. Experience with version control systems (e.g., Git) and collaborative development workflows. Demonstrated ability to optimise performance and implement responsive designs. Preferred: Experience in full-stack development, with knowledge of back-end technologies. Familiarity with cloud platforms and their services (AWS or Azure). Experience with NoSQL and/or graph databases. Strong understanding of web accessibility standards and best practices. Experience with state management libraries and architectures. Have worked on performance and scalability solutions. Knowledge of testing methodologies and automation practices. Experience mentoring junior developers and contributing to team growth. Contribution to open-source projects or development of reusable component libraries. If this sounds like the perfect role for you, apply now and become a key player in our client's dynamic and innovative team!