Senior Full Stack Engineer
Senior Full Stack Engineer
Location: Dublin/Wicklow (Hybrid)
About Hexis
Hexis is an intelligent personalised nutrition platform, proven to enhance performance.
Driven by the understanding that every athlete is unique, Hexis has developed its own proprietary nutrition periodisation system, Carb Coding, that translates workout data into personalised fuelling strategies uniquely tailored to the demands of each athlete's training, lifestyle and goals.
Built on the scientific foundations of physiology, exercise metabolism and nutrition, Hexis is at the forefront of innovation in personalised sports nutrition and is now trusted by athletes and coaches from leading professional and Olympic sporting bodies globally.
We're seeking an exceptional senior full stack engineer who shares our obsession with technical excellence and human performance. At Hexis, you'll collaborate with PhDs, sports scientists, and elite athletes to build technology that defines the future of sports nutrition. If you're driven by ambitious technical challenges and excited to impact world-class athletes' performance, we want you on our team.
About the Role
We're seeking an exceptional Senior Full Stack Engineer, with a strong focus on the frontend, who shares our obsession with technical excellence and human performance. You'll be joining a unique, multi-disciplinary team of engineers, PhDs, and sports scientists to build technology that defines the future of sports nutrition. If you thrive on ambitious technical challenges and are excited to directly impact the performance of world-class athletes, we want you on our team.
What You'll Do
Full-Stack Feature Development
- Build and maintain high-quality frontend solutions using React Native (Expo) for mobile and Next.js for our web platform.
- Develop and contribute to our new design system, creating reusable and consistent components.
- Integrate frontend applications with our TypeScript-based backend APIs and AWS infrastructure.
- Write clean, efficient code and establish automated testing practices to ensure robust, high-quality deliverables.
- Focus on application performance, responsiveness, and cross-platform compatibility to deliver a world-class user experience.
Technical Excellence & Collaboration
- Partner closely with designers, sports scientists, and product leaders to build features that delight our users.
- Work with a modern tech stack, including TypeScript, React Native, Next.js, and AWS.
- Clearly communicate technical decisions and trade-offs to both technical and non-technical stakeholders.
- Stay current with the latest technologies and advocate for improvements to our platform's architecture and scalability.
- Contribute to a culture of high-quality engineering and continuous improvement.
What We're Looking For
Core Skills
- 5+ years of experience in front-end development, including React Native (Expo) and React.js/Next.js.
- Strong proficiency in TypeScript and modern JavaScript (ES6+).
- Experience building and maintaining component libraries or design systems.
- Expertise in responsive design and cross-platform development principles for both web and mobile.
- Proven track record of working collaboratively with design and product teams.
Working Style
- Passionate about code quality, performance, and technical excellence.
- Excellent communication skills with both technical and non-technical team members.
- Self-directed and comfortable working in a fast-paced, agile environment.
- A collaborative problem-solver who enjoys working in a cross-functional team.
- Eager to learn and apply new technologies to solve complex challenges.
Bonus Points
- Experience with backend development in Node.js and TypeScript.
- Interest or experience in sports, fitness, or nutrition.
- Experience working on data-heavy or AI-driven products.
Why You'll Love It Here
- Directly impact the performance of world-class athletes and sporting organizations.
- Collaborate with a unique team of PhDs, sports scientists, and elite performance experts.
- Fast-moving environment where you can see your work come to life and make a real difference.
- Opportunity to work across both mobile and web platforms on a product at the forefront of sports science.
Next Steps
Ready to build the future of sports nutrition? We'd love to see your work and hear about your approach to building exceptional user experiences. Please include a link to your GitHub, portfolio, or examples of projects you're proud of, especially those using React Native, Next.js, and TypeScript.
