Summary: Join a large international energy sector organization to contribute to real-time energy management and balancing solutions, designing and developing software products for the electric grid. Highlights: 1. Contribute to real-time energy management & balancing for energy transition 2. Design and develop real-time software products for the electric grid 3. Provide technical guidance and architectural proposals to a development team **WHO WE ARE** -------------- Etinars is a values\-focused company with multi\-year experience, specialised in the recruitment of professionals for niche markets, managing the full life\-cycle of specialist and executive\-level hires. At Etinars, we genuinely care about who you are and what you need. We place great emphasis on fostering robust, enduring connections built upon trust and transparency. Our approach ensures a swift journey, leading you hand in hand towards signing your next career step. **WHAT WE ARE LOOKING FOR** --------------------------- ### **Senior .NET/Python Developer\-Architect \| Real\-Time Energy Systems** Join our client's large international organisation active in the **energy sector**, contributing to **real\-time energy management \& balancing** and solutions supporting the **energy transition**. You will work on real\-time software products that help balance the electric grid and connect physical assets (e.g., **batteries**, **renewable parks**) to forecasters and optimizers to improve optimisation results. You will join a context where software teams analyse, design, develop, maintain and support products focused on **real\-time services**, including low\-latency streaming and dispatching components. In this role, you will work **2 days per week onsite in Brussels** and the rest remotely, collaborating closely with **functional analysts**, **domain experts**, and technical teams in an international environment. For this role, **relocation to Brussels (Belgium) is mandatory** for candidates living far from the area, or the ability to **commute regularly**. **Languages required:** **English fluent** due to daily interactions with teams and stakeholders. **French or Dutch is a plus.** **YOUR TASKS** -------------- As **Senior Software Developer and Architect**, you will: * Provide technical guidance to development (team of **3–5 people**). * Guide discussions with **functional analysts** and **domain experts**. * Design and document **architectural proposals** (diagrams), including **APIs**, services, and **front\-end/back\-end interactions**. * Improve delivery practices and overall team effectiveness. You will supervise the team to ensure the following activities are delivered: * Break down proposals into **agile progressive development upgrades**. * Implement builds and associated **testing** and **maintenance tools**. * Develop **back\-end services** and **APIs**. * Write tests in collaboration with business colleagues. * Document and develop **user manuals**. * Provide **user assistance and support**. * Monitor systems and provide **L2 support**, incident resolution and troubleshooting (**root causes** of recurring incidents). **YOUR SKILLS AND EXPERIENCE** ------------------------------ ### **Must\-have** * **6\+ years** of software engineering with **technical design and architecture responsibilities**. * Strong capability for **technical / complex analysis** (components include complex technical features). * Proficiency in **.NET**. * Proficiency in **Python**, including **async programming** and **performance\-oriented design**. * Proven experience designing and operating **event\-driven architectures** (**Kafka**, **Azure Event Hub**, or **MQTT**). * Strong understanding of **distributed systems** concepts (**scalability**, **fault tolerance**, **backpressure**, **ordering**, **idempotency**). * Hands\-on experience with **Kubernetes in production** (deployments, autoscaling). * Experience with **Redis** (stateful systems / caching use cases). * Strong testing culture: **unit tests**, **integration tests**, **production validation**. * Production\-grade **observability**: **metrics**, **logging**, **alerting** (e.g., **Grafana**, **Prometheus**, or equivalent). * Familiarity with **Agile** development practices. ### **Nice\-to\-have / stack exposure (plus)** * **Azure** and Infrastructure as Code (e.g., **Bicep**). * Familiarity with parts of the stack: **AKS**, **Azure Functions**, **Azure Service Bus**, **PostgreSQL**, **Azure Data Explorer**, **GitHub Actions / CI/CD**. * Experience with **Scala** or **Rust** is a plus. * **Polytechnic engineering Master’s degree** (or equivalent) is a strong plus. **EXTRA INFORMATION** --------------------- * **Location:** **Brussels, Belgium** (relocation mandatory if living far / or ability to commute regularly) * **Work model:** **Hybrid** \- **2 days onsite / 3 days remote** * **Preferred start date:** **02/03/2026** * **Contract duration:** **1 year**, extendable for **2 more years** (max 3 years) * **Contract type:** **Freelance** * **Languages:** **English fluent**, **French or Dutch is a plus** * **Daily rate range:** **€520–€545/day** (all\-in; depending on profile/experience, within the project budget cap) * **Eligibility:** **EU Citizens**, or **Non\-EU citizens already based in the EU with a valid work permit** Once we receive your CV, we will take the time to evaluate it carefully. Should there be a match for this or any other position at Etinars, we will be in touch. Etinars is committed to supporting a **Diverse and Inclusive Community**. If you meet the minimum criteria for the job, you will be given the opportunity to demonstrate your abilities at an interview.