We are Merlin Digital Partner ! A leading IT and Digital headhunting company who stands out from the crowd, boasting over a decade of experience.
A continuación se detalla todo lo que necesita saber sobre lo que implica esta ocasión, así como lo que se espera de los solicitantes.
We've successfully collaborated and played a pivotal role in the growth of industry heavyweights such as Wallapop, Glovo, Banc Sabadell, and Duracell, among others.
Our emphasis lies in people-centric approaches and optimizing the selection processes .
Our mission is to revolutionize companies by seamlessly integrating top-tier talent .
What sets us apart is our in-depth understanding of each partner (being their best influencer!), addressing not only their needs but also capturing their essence.
Our partner is a fast-growing Health Tech company developing connected technologies at the intersection of hardware, embedded systems, Io T, AI and digital health .
Their technology transforms everyday environments into intelligent health platforms, enabling seamless and continuous health monitoring.
We are currently looking for a Senior Software Engineer (Python) to join their Engineering team and help build the embedded technologies powering the next generation of connected health products.
Mission: As a Senior Software Engineer , your mission will be to design and develop the backend systems, cloud infrastructure and APIs powering the company's connected technologies.
You will have a key role in building scalable, reliable and secure software that connects devices, AI-driven services and customer-facing applications.
Working closely with Product, AI, Embedded and Frontend teams , you will take ownership of solutions from architecture and implementation through deployment and production, helping define the technical foundations of the platform as the company scales.
The Role: You will be responsible for: Designing, developing and maintaining scalable backend services , primarily using Python .
Building and evolving REST APIs powering web, mobile and Io T applications.




Designing and optimizing databases, data models and system integrations .
Developing cloud-native services with a strong focus on reliability, performance and scalability.
Contributing to cloud infrastructure, deployment pipelines and system monitoring .
Improving platform performance, observability and security .
Troubleshooting production issues and continuously improving system reliability .
Collaborating closely with Product, AI, Embedded and Frontend teams to design and deliver new product capabilities.
Participating in software architecture and technical design decisions .
Building clean, maintainable and well-tested software following strong engineering practices.
Improving development workflows, CI/CD pipelines and code quality .
Providing technical guidance and mentoring other engineers through code reviews and knowledge sharing .
Continuously evaluating new technologies, tools and engineering best practices.
What we need: 5+ years of professional backend software engineering experience .
More extensive senior-level experience will be highly valued.
Strong professional development experience with Python .
Experience working with modern Python backend frameworks such as Fast API, Django or similar .
Solid experience designing, developing and maintaining REST APIs .
Experience designing scalable software architectures and contributing to architectural decisions.
Strong knowledge of SQL and Postgre SQL , including database and data model design.
Experience working with Firebase .
Experience deploying and operating applications on cloud platforms such as GCP, Hetzner or similar .
Hands-on experience with Docker, Git and CI/CD pipelines .




Experience with monitoring, observability and background processing tools , such as Sentry, Celery or similar .
Strong understanding of software engineering best practices, including testing, maintainability, code reviews and clean software design .
Excellent debugging, analytical and problem-solving skills .
Ability to take ownership of technical solutions from design and architecture through deployment and production .
Professional English level .
Disponibilidad para acudir a oficinas 4-3 días a la semana.
Nice to Have Experience with event-driven architectures and technologies such as Kafka, Rabbit MQ or MQTT .
Experience with Infrastructure as Code (Ia C) .
Previous experience working with Io T or connected devices .
Experience integrating AI or Machine Learning services into production systems.
Experience building or operating distributed systems .
Previous experience in startups, scale-ups or fast-growing technology companies .
A product-oriented mindset and the ability to comfortably collaborate across different engineering disciplines.
What we offer: Join a fast-growing Health Tech company building a new generation of intelligent, connected health technologies.
Work at the intersection of embedded systems, hardware, Io T, cloud, AI and digital health .
Build technologies powering products already used by leading sports organizations and enterprise customers worldwide .
Take ownership of high-impact projects , from embedded software development through system integration and production.
Collaborate with a talented multidisciplinary team across Hardware, Backend, AI, Data and Product .
Have a visible impact on technical and architectural decisions as the platform and engineering organization continue to evolve.
Work in a fast-paced environment with a high level of autonomy and ownership .
Strong opportunities for professional growth and technical leadership as the company scales internationally. xqbhyrx
Competitive compensation based on experience.

📌 Senior software engineer (Madrid)
🏢 Merlin Digital Partner
📍 Madrid