Full Stack Engineer (Senior/Lead) ID41561 ($2,500 signing bonus)

AgileEngine; Zaragoza; Hybrid; EUR 52,228 - 78,342; Full time

Benefits offered by this job

Professional growth opportunities

Competitive compensation

Exciting projects

Flex-time

Job summary

A leading software development company in Zaragoza is looking for a Full Stack Engineer (Senior/Lead) to join their agile team. The ideal candidate will have over 5 years of experience building scalable systems and proficiency in ReactJS, NodeJS, and React Native. Responsibilities include developing new features and ensuring application performance. The position offers a signing bonus and competitive benefits including flexible schedules and professional growth opportunities.

Qualifications

• 5+ years of experience building scalable systems.
• Solid experience with ReactJS, NodeJS, and React Native.
• Proven ability to deliver solutions with high throughput and low latency.
• Experience designing and implementing complex business solutions.
• Ability to develop features independently from concept to implementation.
• Upper-Intermediate English level.

Responsibilities

• Work independently and provide guidance to team members.
• Ensure smooth operation and performance of applications.
• Identify, troubleshoot, and resolve bugs efficiently.
• Design, develop, and implement new features.

Skills

ReactJS

NodeJS

React Native

Scalable systems

Bug troubleshooting

Independent feature development

Upper-Intermediate English

Tools

Firebase Functions

Job description

Full Stack Engineer (Senior/Lead) ID41561 ($2,500 signing bonus)

AgileEngine is an Inc. 5000 company that creates award‑winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in application development and AI/ML, and our people‑first culture has earned us multiple Best Place to Work awards.

About the Role

As a Full Stack Senior/Lead Engineer at AgileEngine you’ll join a cross‑functional, agile team to build new features and enhance product experiences for millions of users. You’ll contribute across web and mobile platforms, improve performance, and ensure seamless user interactions.

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, and React Native.
• 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 skill level with USD‐based compensation and budgets for education, fitness, and team activities.
• Exciting projects: Work on modern solutions for Fortune 500 enterprises and leading product brands.
• Flex‑time: Tailor your schedule and choose between remote and office work for optimal work‑life balance.

Location: Zaragoza, Aragon, Spain.