Senior Full Stack JavaScript Engineer

Senior Full Stack Software Engineer Location: Remote or hybrid, Ireland Tech stack: React, TypeScript, Node.js, AWS A fast-growing, mission-driven technology company is expanding its Product and Engineering function as it enters a major phase of platform redevelopment and scale. The business delivers a digital-first service used by customers across Ireland and is investing heavily in modernising its web and mobile experiences. This is an opportunity to join at a genuinely formative stage. The engineering team is rebuilding core systems and user interfaces, adopting a modern React and Next.js architecture aligned with an existing mobile application. You will play a key role in shaping both the technical foundations and the day-to-day product experience. The role You will join a small, highly collaborative engineering team with significant ownership across the full stack. The role spans front-end architecture, backend services and cloud infrastructure, with real influence over tooling, standards and technical direction. What you will be doing Designing and building scalable, user-focused web applications using React and TypeScriptContributing across the full stack, including Node.js services and relational databasesPlaying an active role in front-end architecture and the migration to a modern Next.js setupCollaborating closely with product and design to deliver high-quality user experiencesInfluencing engineering standards, best practice and long-term technical decisionsWriting clean, maintainable code with a strong emphasis on testing and quality Core technical experience Strong commercial experience with React and modern JavaScript or TypeScriptSolid backend experience using Node.js and API-driven architecturesExperience working with relational databases such as PostgreSQLFamiliarity with cloud-based environments, ideally AWSUnderstanding of modern front-end build tools and frameworks, including Next.js Desirable experience Exposure to infrastructure-as-code or cloud automation toolsExperience with state management libraries or component librariesBackground in mentoring or supporting other engineersExperience working in early-stage or scaling product teams What we value Pragmatic problem-solving and an ability to reason through technical trade-offsA collaborative mindset with the confidence to challenge ideas constructivelyHigh standards for code quality, testing and maintainabilityCuriosity and a genuine interest in learning and improving continuouslyComfort working with autonomy and taking ownership of outcomes Why consider this role Meaningful impact through technology that supports real-world outcomesSignificant influence over architecture, tooling and engineering practicesClear progression towards a lead or principal role as the team growsFlexible working, with remote or hybrid options in IrelandInclusive, supportive culture that values diversity and different perspectives