Senior Full Stack Software Engineer Python

Influencity - Influencer Marketing Platform; Madrid; Híbrido; EUR 60.000 - 80.000; Jornada completa

Descripción de la vacante

A prominent influencer marketing platform based in Madrid is seeking a Senior Full-Stack Developer to join its Engineering team. This role involves designing back-end systems, collaborating with product and design teams to create pixel-perfect user interfaces, and mentoring junior developers. The ideal candidate should have over 5 years of experience in Full-Stack development, with expertise in JavaScript, Node.js, React, and AWS. Flexible hours and remote work options are available along with a comprehensive employee benefits package.

Servicios

Flexible hours

Performance reviews twice a year

Employee benefits package including transport, training, meals, and gym discounts

Medical & dental insurance

Formación

• 5+ years of experience in Full-Stack development.
• Strong SQL background (PostgreSQL, DynamoDB) is a plus.
• Experience with testing frameworks like Jest or Mocha.

Responsabilidades

• Design database models and build APIs.
• Collaborate with Product and Design teams for UI implementation.
• Mentor mid-level and junior developers.
• Integrate APIs and manage large data volumes.

Conocimientos

Full-Stack development

JavaScript

Node.js

React

Express

GraphQL

MongoDB

AWS

Docker

Testing frameworks (Jest, Mocha)

Descripción del empleo

Overview

We are looking for a passionate Senior Full-Stack Developer to join our Engineering team. You will work closely with our Product and Design teams to develop complete Full-Stack features—from robust backend logic to polished user interfaces. Although we offer flexible hours and remote work, this position is primarily based in Spain.

Responsibilities

• You will design the database models, build the APIs, and implement the Pixel Perfect frontend.
• Frontend Excellence : Collaborate with the Product and Design teams to implement high-fidelity UIs. We value developers who care about the final user experience as much as the code structure.
• Data Integration : Work closely with the Data team (Python stack) to integrate proprietary APIs and large volumes of external data into the user-facing platform.
• Architecture & AWS : Design cloud-native solutions on AWS, ensuring the long-term sustainability and security of the infrastructure. Move the infrastructure toward scalable, cloud-native best practices.
• Leverage AI tools to accelerate development, write tests, and improve code quality.
• Technical Leadership : Mentor mid-level and junior developers, guiding them in best practices, clean code, and architectural decisions. Help the team stay motivated and aligned.

Experience & Skills

Experience: 5+ years of experience in Full-Stack development, preferably working on SaaS products delivering end-to-end features.

Core Stack: JavaScript, Node.js, and React (Next.js in the frontend). If you think that TypeScript is the way to go, great.

Backend & Data : Proven experience with Express, GraphQL, Apollo Server, NestJS, and MongoDB. Strong SQL background (PostgreSQL, DynamoDB) is a plus.

Cloud & Infra : Strong experience with AWS (heavily used), Vercel, and GitHub Actions. Docker experience is valued.

DevOps & Testing : Solid background with testing frameworks such as Jest, Playwright, Mocha, or Chai.

A strong eye for detail in the frontend with a focus on Pixel Perfect results. Knowledge of Python is a plus for collaboration with our Data team.

Culture & Collaboration

You understand that great software is built by great teams. You value product-oriented thinking and strong collaboration across Backend, Frontend, Design, and Data teams. As a Senior profile, you will bridge data and user experience and help ensure data flows from our backend services to a pixel-perfect frontend.

Location & Perks

On your first day, you will be welcomed at our Madrid office. Flexible hours and remote work in a results-oriented environment. Performance reviews twice a year. Employee benefits package (transport, training, meals, gym membership discounts, childcare and more). Medical & dental insurance.

About Influencity

Influencity is a fast-growing company where learning and professional development are part of our culture. We are building the most complete AI-powered influencer marketing platform and aim to become the global leader in influencer marketing.