Full Stack Engineer (Senior/Lead) ID38801
AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards.
Overview
We are looking for a Senior Full Stack Engineer to join a fast-growing health and wellness platform with millions of users worldwide. You’ll work in a cross-functional, agile team, building and improving features for both web and mobile applications. This role offers the opportunity to enhance performance, deliver seamless user experiences, and make a real impact on a product that helps people reach their wellness goals.
What you will do
Work independently and provide guidance to other team members;
Ensure smooth operation and performance of both web and mobile applications;
Identify, troubleshoot, and resolve bugs efficiently;
Design, develop, and implement new features across web and mobile platforms.
MUST HAVES
5+ years of experience building scalable systems;
Solid experience with ReactJS, NodeJS for web, and React Native for mobile development;
Proven ability to deliver solutions with high throughput and low latency requirements;




Demonstrated experience designing and implementing complex business solutions;
Ability to develop features independently without design guidance, taking ownership from concept to implementation;
Upper-Intermediate English level.
NICE TO HAVES
Experience in Startups;
Experience with Firebase Functions.
PERKS AND BENEFITS
Professional growth: Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps.
Competitive compensation: We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities.
A selection of exciting projects: Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands.
Flextime: Tailor your schedule for an optimal work-life balance, with options for working from home or going to the office.
Details
Seniority level: Mid-Senior level
Employment type: Full-time
Industries: IT Services and IT Consulting
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📌 Full Stack Engineer (Senior/Lead) (Barcelona)
🏢 AgileEngine
📍 Barcelona