Full Stack Engineer – On-Site in Madrid, Spain

Overview

Full Stack Engineer – On-Site in Madrid, Spain

Fintivio is a fast-growing FinTech startup developing SaaS solutions for the financial services industry. Our platform is designed to empower family offices and asset management firms with cutting-edge technology that enhances investment management, financial reporting, and portfolio analytics. Our mission is to provide all stakeholders with the best tools to maximize their investment returns. We move fast, pivot quickly, and continuously evolve to meet the needs of financial professionals in a rapidly changing world. Our technology stack includes cloud-based architectures, AI-driven analytics, and API integrations, enabling seamless connectivity with leading financial institutions and data providers. We operate in a fast-paced, highly collaborative startup environment where small agile teams drive innovation, problem-solving, and adaptability. Fintivio is in a major expansion phase, actively developing new SaaS products that redefine how investment professionals track, manage, and optimize financial portfolios.

Role Overview

We are looking for a Full Stack Engineer with 3-5 years of experience to join our Madrid-based team. This role requires strong expertise in Node.js (Express), Angular, TypeScript, along with cloud infrastructure (Azure, AWS), containerization (Docker), and database management (PostgreSQL).

You’ll be responsible for developing, deploying, and maintaining scalable, high-performance SaaS applications, working closely with product managers, designers, and other engineers.

Fluency in English is required (both written and spoken).

All candidates must submit a portfolio or GitHub / Bitbucket repository. CVs are optional. Applications without a portfolio or code samples will not be considered.

To apply, send your portfolio / GitHub to :

What You’ll Do

• Full Stack Development & Implementation
• Develop and maintain scalable, secure, and high-performance applications using Node.js (Express), Angular, and TypeScript
• Architect and optimize back-end APIs and services, ensuring efficiency and reliability
• Design and develop front-end applications that provide a seamless user experience
• Implement best practices in modular development, code reusability, and software scalability
• Cloud, Deployment & Infrastructure
• Deploy, manage, and scale applications in Azure and AWS cloud environments
• Containerize applications using Docker and orchestrate deployments in cloud environments
• Optimize cloud-based workloads, ensuring cost efficiency and high availability
• Automate infrastructure provisioning and CI / CD pipelines to streamline deployments
• Database & API Development
• Design, develop, and optimize PostgreSQL databases, ensuring data integrity and high performance
• Build RESTful and GraphQL APIs for seamless communication between front-end and back-end services
• Implement authentication and authorization mechanisms (JWT, OAuth, Role-Based Access Control)
• Monitor database performance and optimize queries for scalability
• Collaboration & Agile Workflow
• Work closely with UI / UX designers, product managers, and other developers to align technical and business goals
• Participate in Agile sprints, code reviews, and design discussions to ensure high-quality code
• Provide technical mentorship to junior developers and contribute to best practices documentation
• Security, Testing & Performance Optimization
• Implement security best practices in APIs, database access, and authentication mechanisms
• Optimize performance of both front-end and back-end applications to ensure fast, smooth user experiences
• Write and maintain unit, integration, and end-to-end tests to ensure software reliability
• Monitor logs and debug production issues, ensuring system uptime and stability

Required Skills & Experience

3-5 years of experience in full stack development with a strong emphasis on scalability, security, and performance.

What We Offer

How to Apply

Portfolio or GitHub repository is required. CVs are optional.

Send your portfolio / GitHub to :

Location : Madrid, Spain ( On-Site Role, with Occasional Hybrid Flexibility )

Company : Fintivio

Applications without a portfolio or GitHub will not be considered.

Diversity & Equal Opportunity Statement

Fintivio is committed to fostering a diverse, inclusive, and equitable workplace. We believe that innovation thrives when different perspectives come together.

We do not discriminate based on race, color, religion, gender, sexual orientation, age, disability, nationality, marital status, or any other protected status.

We encourage applications from qualified candidates of all backgrounds who are passionate about building cutting-edge financial software and driving innovation in full stack development.

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