We are

Merlin Digital Partner ! A

leading IT and Digital headhunting company

who stands out from the crowd, boasting over a decade of experience. 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. ¿Por favor, lea la descripción al menos una vez antes de hacer clic en "Solicitar". 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!), Our partner

is a fast-growing

HealthTech company

developing connected technologies at the intersection of

hardware, embedded systems, IoT, 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.

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.

Designing, developing and maintaining

scalable backend services

, primarily using

Python

. Building and evolving

REST APIs

powering web, mobile and IoT 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

. 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

. 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

FastAPI,



Django or similar

. ~ Experience designing

scalable software architectures

and contributing to architectural decisions. ~ Strong knowledge of

SQL and PostgreSQL

, 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

. ~ 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.

Experience with

event-driven architectures

and technologies such as

Kafka, RabbitMQ or MQTT

. Experience integrating

AI or Machine Learning services

into production systems. Previous experience in

startups, scale-ups or fast-growing technology companies

. Work at the intersection of

embedded systems, hardware, IoT, cloud, AI and digital health

. 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

.

📌 Senior Software Engineer (C# / SQL Server) (Barcelona)
🏢 Merlin Digital Partner
📍 Barcelona