Senior Full Stack Web Developer (React / Node.js / PHP / SAP BTP)

We’re Watts. Together, we’re reimagining the future of water.We feel proud every day about what we do. We're all part of the same crucial mission, no matter what function we support -- it's to provide safe, clean water for the world, and to protect our planet's most valuable resource.What we do:For 150 years, Watts has built best-in-class products that are trusted by customers in residential and commercial settings across the world. We are at the forefront of innovation, working with cutting-edge technology to provide smart and connected, sustainable water solutions for the future. Watts is a leading brand with a quality reputation — and we have a dynamic future ahead.​Scope of PositionWe are seeking an experienced Senior Full Stack Web Developer with strong expertise in React, Node.js, PHP, SQL, and SAP BTP (SAP Business Technology Platform)—including hands‑on experience with SAP BTP Workflows—to design, build, and maintain scalable, enterprise‑grade web applications. This role blends modern JavaScript development with SAP‑integrated and database‑driven systems, requiring sound architectural judgment, hands‑on coding, and technical leadership.Primary Job Duties and ResponsibilitiesDesign and develop modern, responsive web applications using React, TypeScript, and component‑based UI librariesBuild and maintain scalable back‑end services using Node.js (e.g., Express, NextJS) and PHP‑based applications or servicesDesign, develop, and consume RESTful APIs and/or GraphQL APIsDesign, implement, and integrate SAP BTP Workflows to support business processes, approvals, and system orchestrationIntegrate web applications with SAP BTP services, including APIs, workflows, and enterprise data sourcesDevelop, optimize, and maintain SQL‑based data models, queries, and stored proceduresCollaborate with business stakeholders and UX/UI designers to translate requirements into reusable components and workflowsMake architectural and technical decisions across front‑end, back‑end, database, and SAP integration layersEnsure application performance, reliability, security, and maintainabilityWrite clean, well‑documented, and testable code; participate in code reviewsSupport CI/CD pipelines and cloud‑based deploymentsMentor junior developers and promote best practices across the teamParticipate in Agile ceremonies, estimation, and backlog refinementRequired QualificationsBachelor’s degree in Computer Science, Engineering, or equivalent professional experience7+ years of professional software development experienceStrong proficiency in JavaScript and TypeScriptExtensive hands‑on experience with React, including hooks, state management, and component architectureExperience using AI-assisted coding tools (e.g., GitHub Copilot, Microsoft Copilot) to accelerate development, improve code quality, assist with debugging, and support code refactoring while maintaining security and coding standards.Demonstrated ability to apply AI-assisted coding responsibly within SAP ecosystems, including reviewing, validating, and securing AI-generated code that integrates with SAP BTP services and workflows, while ensuring compliance with organizational coding standards, security policies, and SAP-recommended best practices.Proven experience using component‑based UI libraries or design systems (e.g., Material UI, Ant Design, Chakra UI, Bootstrap, or custom component libraries)Experience designing and maintaining reusable, scalable front‑end componentsStrong back‑end development experience with Node.jsProfessional experience developing and maintaining PHP applicationsStrong SQL skills, including schema design, query optimization, and performance tuningExperience with relational databases such as PostgreSQL, MySQL, or SQL ServerHands‑on experience with SAP BTP, including SAP BTP WorkflowsExperience implementing workflow‑driven business processes and system integrationsExperience designing and consuming APIs (REST and/or GraphQL)Familiarity with modern build tools and package managers (e.g., Vite, Webpack, npm, pnpm)Experience with cloud platforms (Azure, AWS, GCP, or SAP BTP environments) and CI/CD workflowsSolid understanding of web security, authentication, and authorization best practicesStrong problem‑solving, debugging, and communication skillsPreferred QualificationsExperience with Next.js or other React‑based frameworksExperience contributing to or maintaining a shared component library or design systemAdvanced experience with SAP BTP services (Workflows, Integration Suite, Destinations)Experience modernizing or integrating legacy PHP systemsExperience with Docker and containerized deploymentsKnowledge of automated testing tools (testRigor, Cypress, Playwright)General Applicable Company Competencies Commitment to Watts’ values of integrity, accountability, continuous improvement and innovation, and transparency.Punctuality and dependability.Ability to be flexible and adapt to changing work priorities and stressful conditions.Adherence to all personnel policies, procedures, and standards of process as implemented by Watts.Maintain productive and collaborative relationships with other Watts employees.Adherence to Watts’ seven cultural beliefs: Growth Mindset, Customer-Focused Innovation, Constant Communication, Clear Goals, Collaborate Globally, Be Inclusive, and Take Action.Working Conditions:While performing the job duties, you will be working remotely in an office environment. You may be required to occasionally travel to and work in the office at the Andover location for meetings, trainings, or as otherwise required by Company management.Physical Requirements: Specific physical abilities required for this position include, but are not limited to:Ability to remain seated at a desk or workstation for extended periods.Ability to perform repetitive tasks like typing on a keyboard or using a mouse for extended periods.Ability to physically move around the office, organize or transport files, packages, or other office-related materi