About the role We are looking for a Senior Full Stack
Engineer to join an international engineering team based in Madrid
and contribute to the development and evolution of a large-scale
SaaS platform. In this role, you will work across the entire
technology stack, with a balanced focus on backend development
using Node.js and TypeScript and frontend development using React.
Beyond writing high-quality code, you will actively participate in
architectural decisions, shape technical solutions and take
ownership of features throughout their lifecycle. You will
collaborate closely with other engineers, Tech Leads and Product
Managers to build scalable, reliable products that address complex
business challenges. This is an opportunity for an engineer who
combines strong technical expertise across the stack with a genuine
product mindset and an interest in influencing how software is
designed, developed and evolved. Key responsibilities Full Stack
Development: Design, develop and maintain end-to-end product
features, balancing backend services and frontend applications.
Backend Engineering: Build scalable and maintainable services using
Node.js and TypeScript, contributing to API design, business logic
and microservices architecture. Frontend Engineering: Develop
high-quality user interfaces and applications using React, focusing
on usability, performance and maintainability. Software
Architecture: Participate in architectural decisions, design
patterns and the evolution of shared libraries and reusable
components across the stack. Cloud Infrastructure: Work with a
proprietary serverless cloud platform, contributing to the
development and scalability of the technology ecosystem. End-to-End
Ownership: Take responsibility for features from initial design and
technical definition through implementation, testing, deployment
and maintenance. Product Collaboration: Work closely with Product
Managers,



Tech Leads and fellow engineers to define solutions,
challenge assumptions and translate business requirements into
effective technical implementations. Engineering Excellence:
Promote high development standards through code reviews, automated
testing, CI/CD practices and continuous improvement. Requirements
At least 6 years of professional experience in software
development, with substantial experience across both backend and
frontend engineering. Experience working in product-based
technology companies , ideally within SaaS environments or
startups. Strong expertise in Node.js and TypeScript for backend
development. Solid professional experience with React and modern
frontend development practices. Experience designing and developing
end-to-end features across the full stack. Good understanding of
microservices, software architecture, scalable design patterns and
API development. Ability to make technical decisions, contribute to
architectural discussions and take ownership of software features.
A strong product mindset, understanding the relationship between
technical decisions, business objectives and user needs. Interest
in cloud infrastructure and serverless architectures, including
proprietary technology platforms. A consistent professional track
record demonstrating commitment and long-term contribution to
product development. Fluent English , with the ability to
collaborate effectively with international engineering teams. What
we offer Competitive compensation Hybrid working model: 3 days per
week at the Madrid office and 2 days working remotely. Technical
ownership: The opportunity to influence architecture and contribute
to the evolution of a proprietary serverless platform. Product
impact: Work on scalable SaaS solutions used by thousands of
international organisations. International engineering environment:
Collaborate with experienced professionals in a growing technology
company focused on engineering quality and product
excellence.

📌 Senior Full Stack Engineer (Node.js / TypeScript /React) (Madrid)
🏢 Actual Talent
📍 Madrid