Back End Developer

Senior Backend Engineer (Python)

Location: Fully Remote (Italy)

Rate: €250.00 per day

Contract Duration: 6 Months

Start Date: ASAP

Travel: Up to 4 business trips per year

Language Requirements:

• Italian: Native or Full Professional Proficiency
• English: Fluent / Excellent (mandatory)

The Role

We are seeking an experienced Senior Backend Engineer (Python) to join the Digital Innovation Technology team on a contract basis.

You will play a key role in integrating heterogeneous devices into a unified IoT platform by developing robust backend services and gateway applications. This position focuses heavily on protocol integration, cloud connectivity, and scalable IoT architectures.

The ideal candidate is hands-on, technically curious, and comfortable working with complex distributed systems and low-level device communication technologies.

Key Responsibilities

Backend & IoT Development

• Design, develop, and maintain high-performance backend services in Python
• Build and maintain IoT gateway applications running on Yocto Linux
• Implement communication layers and integrations using protocols such as:
• Serial
• TCP/UDP
• RS485
• Modbus
• BACnet
• CAN
• Ensure reliability through robust retry logic, error handling, and offline buffering
• Integrate devices with cloud platforms using protocols such as MQTTS and HTTPS
• Contribute to backend architecture and continuously improve development practices and tooling

Device Protocol Integration

• Analyze and integrate legacy, proprietary, and non-standard HVAC/building automation protocols
• Reverse engineer undocumented or partially documented protocols where necessary
• Develop Python drivers and parsers to convert device-level communication into standardized internal models

Cloud Integration & Data Modelling

• Map device data structures into Digital Twin models
• Collaborate closely with Cloud and Mobile teams to ensure semantic consistency across products
• Contribute reusable integration patterns, standards, and best practices

Testing & Validation

• Perform end-to-end testing across device, gateway, cloud, and mobile layers
• Conduct code reviews, debugging, optimization, and performance tuning
• Support troubleshooting and field validation activities when required

Collaboration & Documentation

• Work closely with firmware, cloud, app, and product engineering teams
• Participate in cross-functional international collaboration
• Produce clear technical documentation and share integration knowledge across teams

Required Skills & Experience

• Bachelor’s degree in Computer Science or related discipline
• 5+ years of professional experience in backend software development
• Advanced Python development experience with production-grade systems
• Strong experience with Docker containerization
• Experience designing and managing Kubernetes-based infrastructures
• Solid knowledge of:
• PostgreSQL
• MySQL
• MongoDB
• Redis
• Experience working with IoT systems and communication protocols
• Strong understanding of scalable backend architectures and cloud integrations
• Fluent English communication skills

Nice to Have

• Experience with Yocto Linux
• HVAC, industrial automation, or building technology domain knowledge
• Exposure to Digital Twin architectures
• Experience reverse engineering communication protocols

Soft Skills

• Strong analytical and problem-solving mindset
• Curious and passionate about technology
• Structured yet pragmatic approach to engineering
• Excellent communication and collaboration skills
• Ability to work independently in a remote-first environment
• Goal-oriented with strong ownership mentality

What’s on Offer

• Fully remote contract engagement
• Opportunity to work on cutting-edge IoT and cloud integration projects
• International and collaborative engineering environment
• Flexible working culture with strong work–life balance
• Exposure to innovative technologies in sustainability and smart building systems