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.

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

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.

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 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 . 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

FastAPI, 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 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 . 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, RabbitMQ or MQTT . Experience with

Infrastructure as Code (IaC) . Previous experience working with

IoT 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 HealthTech company

building a new generation of intelligent, connected health technologies. Work at the intersection of

embedded systems, hardware, IoT, 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. Competitive compensation

based on experience.

📌 Senior Software Engineer (Barcelona)
🏢 Merlin Digital Partner
📍 Barcelona