Sonia Solutions

Software Development

Sonia Solutions GmbH

11-50

Germany

## Let me introduce...

With Sonia, doctors are successful doctors. We create and deploy AI-enhanced solutions that make doctors’ lives easier, patients’ care better, and healthcare systems more efficient. If you’re an intrinsically motivated self-starter who values impactful work, join us in revolutionizing healthcare.

We’re looking for a **Senior Python Software Engineer (all)** to take ownership of critical backend components in our AI-driven products. You’ll design and implement scalable architectures, mentor others, and ensure our systems are robust, reliable, and future-proof. Partnering closely with engineering and ML teams, you’ll build APIs and services that enable real-time communication, data processing, and automation at scale—always with clean, maintainable, and high-performing code.

This role can be performed in a hybrid setup from our offices in **Luxembourg** or **Berlin**, or **remotely** from anywhere in **Germany** or **Luxembourg**.

## This is what you’ll own

* **Backend Development:** Design, development, and maintenance of scalable backend services using Python 3 (async, type hinting).
* **API Architecture:** Architect and implement RESTful APIs and real-time communication via WebSockets.
* **Technical Leadership:** Drive technical discussions and decisions, shaping backend architecture and coding standards.
* **Production Reliability:** Debug and troubleshoot production issues, ensuring resilience, performance, and security.
* **DevOps:** Advance our CI/CD pipeline and containerized deployments (Docker).
* **AI/ML Integration:** Collaborate with ML engineers to integrate APIs and backend systems with AI/ML services.
* **Mentorship & Quality:** Mentor and support other developers, fostering best practices in engineering, testing, and documentation.
* **Continuous Improvement:** Continuously identify opportunities for technical and process improvements.

## You’ll thrive in this role if you bring

## Must Haves

* **Experience:** **8+ years** of professional experience in software development with Python 3.
* **Python Expertise:** Deep knowledge of asynchronous programming, type hinting, and software design principles.
* **Web Frameworks:** Solid experience with web frameworks (**FastAPI, Django, or Flask**).
* **Architecture:** Proven track record of designing and scaling APIs and backend architectures.
* **Real-Time Communication:** Hands-on experience with real-time communication (**WebSockets, Socket.IO, FastAPI WebSockets**).
* **DevOps Foundation:** Experience with containerization (**Docker**) and CI/CD systems.
* **Quality Assurance:** Strong debugging and testing skills in production environments.
* **Version Control:** Expertise with version control (**Git, GitLab, Bitbucket**).
* **Communication:** Strong communicator with experience mentoring peers and leading projects.
  
## Nice to Have

* **Generative AI:** Experience working with LLMs (routing, parsing, error handling, guardrails).
* **Data Flow:** Knowledge of message brokers (**RabbitMQ, Kafka, Redis Pub/Sub**).
* **Databases:** Exposure to NoSQL databases (**Redis**).
* **Container Orchestration:** Familiarity with Kubernetes or advanced DevOps practices.
* **Community:** Contributions to open-source projects.

## Why you’ll love working with us

* Full ownership of impactful backend components in a fast-growing AI environment.
* A collaborative team that values curiosity, learning, and pragmatic problem-solving.
* Flexible working arrangements (remote or hybrid).
* 30 days of annual vacation.
* Competitive salary depending on experience.
* The chance to work on products that directly shape the future of healthcare.

## Ready to apply?

If you’re passionate about backend engineering and want to make an impact in healthcare with cutting-edge AI technologies, we’d love to hear from you!

I’m Margarita and will be guiding you through the application process.

Employee

Professional / Experienced

<h2 id="let-me-introduce">Let me introduce...</h2>
With Sonia, doctors are successful doctors. We create and deploy AI-enhanced solutions that make doctors’ lives easier, patients’ care better, and healthcare systems more efficient. If you’re an intrinsically motivated self-starter who values impactful work, join us in revolutionizing healthcare.
We’re looking for a Senior Python Software Engineer (all) to take ownership of critical backend components in our AI-driven products. You’ll design and implement scalable architectures, mentor others, and ensure our systems are robust, reliable, and future-proof. Partnering closely with engineering and ML teams, you’ll build APIs and services that enable real-time communication, data processing, and automation at scale—always with clean, maintainable, and high-performing code.
This role can be performed in a hybrid setup from our offices in Luxembourg or Berlin, or remotely from anywhere in Germany or Luxembourg.
<h2 id="this-is-what-youll-own">This is what you’ll own</h2>
<ul>
<li>Backend Development: Design, development, and maintenance of scalable backend services using Python 3 (async, type hinting).</li>
<li>API Architecture: Architect and implement RESTful APIs and real-time communication via WebSockets.</li>
<li>Technical Leadership: Drive technical discussions and decisions, shaping backend architecture and coding standards.</li>
<li>Production Reliability: Debug and troubleshoot production issues, ensuring resilience, performance, and security.</li>
<li>DevOps: Advance our CI/CD pipeline and containerized deployments (Docker).</li>
<li>AI/ML Integration: Collaborate with ML engineers to integrate APIs and backend systems with AI/ML services.</li>
<li>Mentorship &amp; Quality: Mentor and support other developers, fostering best practices in engineering, testing, and documentation.</li>
<li>Continuous Improvement: Continuously identify opportunities for technical and process improvements.</li>
</ul>
<h2 id="youll-thrive-in-this-role-if-you-bring">You’ll thrive in this role if you bring</h2>
<h2 id="must-haves">Must Haves</h2>
<ul>
<li>Experience: 8+ years of professional experience in software development with Python 3.</li>
<li>Python Expertise: Deep knowledge of asynchronous programming, type hinting, and software design principles.</li>
<li>Web Frameworks: Solid experience with web frameworks (FastAPI, Django, or Flask).</li>
<li>Architecture: Proven track record of designing and scaling APIs and backend architectures.</li>
<li>Real-Time Communication: Hands-on experience with real-time communication (WebSockets, Socket.IO, FastAPI WebSockets).</li>
<li>DevOps Foundation: Experience with containerization (Docker) and CI/CD systems.</li>
<li>Quality Assurance: Strong debugging and testing skills in production environments.</li>
<li>Version Control: Expertise with version control (Git, GitLab, Bitbucket).</li>
<li>Communication: Strong communicator with experience mentoring peers and leading projects.</li>
</ul>
<h2 id="nice-to-have">Nice to Have</h2>
<ul>
<li>Generative AI: Experience working with LLMs (routing, parsing, error handling, guardrails).</li>
<li>Data Flow: Knowledge of message brokers (RabbitMQ, Kafka, Redis Pub/Sub).</li>
<li>Databases: Exposure to NoSQL databases (Redis).</li>
<li>Container Orchestration: Familiarity with Kubernetes or advanced DevOps practices.</li>
<li>Community: Contributions to open-source projects.</li>
</ul>
<h2 id="why-youll-love-working-with-us">Why you’ll love working with us</h2>
<ul>
<li>Full ownership of impactful backend components in a fast-growing AI environment.</li>
<li>A collaborative team that values curiosity, learning, and pragmatic problem-solving.</li>
<li>Flexible working arrangements (remote or hybrid).</li>
<li>30 days of annual vacation.</li>
<li>Competitive salary depending on experience.</li>
<li>The chance to work on products that directly shape the future of healthcare.</li>
</ul>
<h2 id="ready-to-apply">Ready to apply?</h2>
If you’re passionate about backend engineering and want to make an impact in healthcare with cutting-edge AI technologies, we’d love to hear from you!
I’m Margarita and will be guiding you through the application process.

Senior Python Software Engineer (all)

Lead Full-Stack Engineer (all) - TypeScript

Senior Full Stack Engineer (all) - TypeScript

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