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Urgent! Seniro Backend Dev. NodeJS/Typescript Job Opening In Madrid – Now Hiring HireTech

Seniro Backend Dev. NodeJS/Typescript



Job description

We are looking for a Senior Backend Developer to join our team and help us build a robust, scalable platform from the ground up, leveraging insights gained from our Beta and current product usage.

You will play a key role in designing and implementing the backend architecture that powers our application and integrations with various gym management systems across Europe.

Your Responsibilities

Design and implement the server-side application logic, develop APIs, create libraries, and manage system components.

Integrate with external services, such as different Gym Management Software, to enhance functionality and provide data insights.

Support our customers by implementing their feedback and resolving technical issues.

Collaborate closely with the team to build a consistent, efficient, and responsive application.

Write clean, maintainable, and well-tested code.

Communicate directly with clients for product conception, onboarding, and training purposes.

Occasionally travel within Europe to better understand gym workflows and user needs.

Required Skills & Experience

10+ years of experience building backend systems (including at least 1 year using Node.js with TypeScript)

Proven production experience with SQL databases (ideally PostgreSQL using Prisma ORM)

Passion for mentoring and sharing knowledge with less experienced developers

Strong sense of ownership and commitment to writing high-quality, testable code

Fast learner with a creative mindset and problem-solving attitude

Customer-obsessed mindset you deeply care about user experience

Experience working in agile, fast-paced startup environments

Excellent communication skills; fluent English (C1 level)

What We Offer

Contract type:

Freelance / Self-Employed (Autónomo)

Salary range:

50,000 55,000 gross per year

Fully remote

work environment

Sport card

to support your fitness goals

Private medical care

Exciting opportunity to shape a product from the ground up within a dynamic startup environment

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Required Skill Profession

Informática Y Tecnología



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