Senior Full Stack Software Engineer Python

ONLY FOR RESIDENTS IN SPAIN #######Siga leyendo para descubrir lo que necesitará para tener éxito en este puesto, incluyendo habilidades, cualificaciones y experiencia. 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 . 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 huge 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. You will contribute to moving our infrastructure toward more scalable, cloud-native best practices. Leverage AI tools (like Cursor IDE) 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. You are not just a technical leader but a cultural multiplier who helps the team stay motivated and aligned. # Experience: 5+ years of experience in Full-Stack development, preferably working on SaaS products delivering end-to-end features. Core Stack: Expert knowledge of JavaScript, Node.js, and React (NextJS in the Frontend). If you think that TypeScript is the way to go and are able to push to future standards, great :). Backend & Data: Proven experience with Express, GraphQL, Apollo Server, NestJS, and MongoDB. If you know how to make relational and non-relational logic coexist, and have a strong SQL background (PostgreSQL, DynamoDB), even better. Cloud & Infra: Strong experience with AWS (we are heavily based on it), Vercel, and GitHub Actions. If Docker is a must for you and you embrace leading a container-mindset, we like it. DevOps Mindset: Testing: Solid background with testing frameworks such as Jest, Playwright (we don't use Puppeteer), Mocha, or Chai. A strong eye for detail in the Frontend. You strive for Pixel Perfect results and understand that UI/UX is critical for product success. While the role is Node.js focused, experience with Python is a strong plus, as it helps in collaborating with our Data team and their APIs. # Culture & People First: You understand that great software is built by great teams. Product-Oriented: You care about who uses the software. Strong collaboration skills to bridge the gap between Backend, Frontend, Design, and Data teams. As a Senior profile, you will bridge the gap between data and user experience. you will ensure the data flows seamlessly from our backend services to a pixel-perfect frontend that our customers love to use. You will help lead this transition, streamlining our workflows to ensure seamless deployments as we continue to grow. On your first day, we'll welcome you at our Madrid office. You'll dive into our infrastructure map (heavily based on AWS), repositories, and our modern tech stack. You will collaborate with the Data team (Python stack) to consume our proprietary APIs and external data services, integrating them into the core product. You will help drive the standardization of our deployment pipelines, proposing architectural improvements to our AWS infrastructure to make the team more efficient and ensuring our platform scales to meet global demand. # At Influencity, you'll be part of a fast-growing company where learning and professional development are part of our culture. Flexible hours & remote work in a results-oriented environment. Extra time off: MacBook or Windows (Lenovo, HP, Dell). Performance reviews twice a year. Young, dynamic team with a "let's make it happen" mentality. Employee benefits package (transport, training, meals, gym membership discounts, childcare and more). Medical & dental insurance. Founded in 2014, Influencity ( ) is the most complete AI-powered influencer marketing platform in the market. With over 70M influencers in our database, we provide brands and agencies with a full stack of solutions to manage campaigns at scale. Our mission is to become the global leader in influencer marketing. To achieve this, we need an exceptional team that thrives on growth, collaboration, and innovation.