Senior Full-Stack Software Engineer

Job Title Senior Full-Stack Software Engineer Job Description Job Overview: As a Senior Full-Stack Engineer on our new UK-based team, you will help us build a financial B2B SaaS platform using TypeScript, React, and Node.js. You'll tackle our unique challenge: ensuring high performance on an application that handles complex financial calculations and large datasets. With a 60/40 backend-to-frontend focus, this role is perfect for a proactive engineer who is passionate about building high-performance software throughout the stack and thrives in a multicultural environment. This is a fantastic opportunity to grow your skills while shaping up a new team and a cutting-edge platform. *** This is a hybrid position - working 3 days a week from our Winnersh office. *** Key Responsibilities Key Responsibilities: • Take full ownership of the feature development lifecycle, from concept and design to testing and deployment. • Collaborate with product managers, designers, and other SW Engineers to translate requirements into well-architected, user-friendly features. • Write clean, scalable, and high-performance code for both the backend (Node.js) and the frontend (React/TypeScript) • Collaborate with field teams to support our customers, debug issues, and offer prompt solutions. • Participate in code reviews and contribute to the continuous improvement of our development processes. • Improve the performance, scalability and security of the platform. • Develop and maintain comprehensive tests to ensure software quality and reliability • Contribute to our Node.js and AWS backend services. • Stay up-to-date with the latest trends in web development and cloud-based SaaS technologies. Required Qualifications: • 5+ years of professional experience in software development for scalable, web-based applications. • Experience in building large-scale, maintainable applications, with proficiency in TypeScript/JavaScript. • Proven experience building and maintaining backend services with Node.js and a common framework (e.g., Fastfy, Express, NestJS). • JavaScript performance optimization. You know how to profile, debug, and refactor code to make it faster. • Experience in modern frontend frameworks (e.g., React, Vue, Svelte). • Experience with AWS infrastructure. • Experience with CI/CD pipelines. • Bachelor's degree in Computer Science, Software Engineering, or a related field from a university or a leading college. Bonus Points: • Experience with Browser DB (IndexedDB) and Sync Engine pattern. • Experience with data-intensive applications or financial modeling. Soft Skills: • Strong problem-solving abilities and an eagerness to learn. • Excellent communication skills and the ability to work well in a multicultural environment. • High attention to detail and a commitment to delivering high-quality work. #LI-RS2 Function Product Delivery Country United Kingdom Office Location Winnersh Work Place type Hybrid Advert Working at Sage means you're supporting millions of small and medium sized businesses globally with technology to work faster and smarter. We leverage the future of AI, meaning business owners spend less time doing routine tasks, like entering invoices and generating reports, and more time pursuing their ambitions.Our colleagues are the best of the best. It's why we were awarded 2024 Best Places to Work by Glassdoor. Because to achieve extraordinary outcomes, we need extraordinary teams. This means infusing Sage with people who knock down barriers, continuously innovate, and want to experience their potential. Learn more about working at Sage: sage.com/en-gb/company/careers/working-at-sage/ Watch a video about our culture: youtube.com/watch?v=qIoiCpZH-QE We celebrate individuality and welcome you to join us if you embrace all backgrounds, identities, beliefs, and ways of working. If you need support applying, reach out at careers@sage.com . Learn more about DEI at Sage: sage.com/en-gb/company/careers/diversity-equity-and-inclusion/