Senior Fullstack developer

JR Spain; Madrid; Presencial; EUR 60.000 - 80.000; Jornada completa

Descripción de la vacante

A fast-growing startup in Madrid is seeking a Senior Fullstack Product Developer. You will enhance a platform for deskless workers, focusing on scalable applications using Python and React. Ideal candidates have over 5 years of experience across the full development stack, a proactive mindset, and a startup-oriented approach. This role offers an opportunity to impact a vast user base with robust functionalities.

Servicios

Comprehensive benefits

Flexible work environment

Culture of continuous learning

Formación

• 5+ years of experience developing scalable applications using both frontend and backend technologies.
• 3+ years of experience with React, including State Management libraries like MobX, redux.
• Experience scaling services to millions of users.

Responsabilidades

• Lead the design, development, and maintenance of complex Python applications.
• Collaborate with product management and stakeholders to define technical requirements.
• Write clean, efficient, and self-documented code.

Conocimientos

Experience with Python

React

MongoDB

MySQL

Message queues (RabbitMQ)

AWS

Azure

UI/UX understanding

Descripción del empleo

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Please note: for this position, we are considering candidates who are available to travel occasionally to Lisbon for team meetings.

Over 20 years of market experience, Intellias brings together technologists, creators and innovators in Europe, North and Latin America, and the Middle East. Join our international team and take the mission to solve the advanced tech challenges of tomorrow!

Our client is a fast-growing startup revolutionizing the deskless work experience with a platform that streamlines operations from scheduling to payroll. With over 3.8B deskless workers worldwide, the opportunity is vast. The product offers features like scheduling, time tracking, task and communication management, HR tools, training, and more.

We’re seeking a Senior Fullstack Product Developer to enhance the platform. You'll help build a fast, scalable, user-friendly product used daily, working on everything from intuitive UIs to robust backend solutions.

Requirements

• 5+ years of experience developing scalable applications using both frontend and backend technologies.
• 5+ years of experience with Python.
• 3+ years of experience with React, including State Management libraries like MobX, redux.
• Extensive hands-on experience with MongoDB and MySQL at an expert level.
• Deep expertise in message queues, especially RabbitMQ, for building scalable, message-driven systems.
• Experience with both AWS and Azure.
• Ability to understand the pros and cons of different architecture decisions and choose the best option.
• Experience scaling services to millions of users.
• Understanding of web technology complexities, constraints, UI/UX.
• Startup mindset and a proactive, ownership-driven approach; experience in product companies is a great advantage.

Responsibilities

• Lead the design, development, and maintenance of complex Python applications.
• Collaborate with product management and stakeholders to define technical requirements and deliverables.
• Write clean, efficient, and self-documented code.
• Implement automation tests.
• Participate in code reviews to ensure quality and maintainability.
• Monitor application performance and provide optimization recommendations.
• Stay updated with latest technologies and industry trends.
• Drive continuous technological improvement.

At Intellias, people always come before processes. We combine cutting-edge technology with a culture that champions autonomy, collaboration, and continuous learning. Our flexible, people-centered environment—paired with comprehensive benefits—makes this an ideal place for technology leaders ready to make their mark. If you’re excited to architect impactful mobile solutions, we’d love to meet you.