This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Home Assistant Python Developer for Hardware based in France. This is an exciting opportunity to develop the Python software layer that powers the integration of smart home hardware into a widely used open-source ecosystem. Working at the intersection of hardware and software, you will create seamless device experiences by building reliable integrations, automation logic, and communication layers. You will collaborate with cross-functional engineering teams in a fully remote, asynchronous environment while contributing to large-scale open-source projects. The role offers significant ownership, allowing you to influence products throughout their entire lifecycle, from initial development to long-term maintenance. Your work will directly impact millions of smart home users by ensuring hardware devices are intuitive, stable, and easy to use. This position is ideal for experienced Python developers who enjoy solving complex integration challenges and contributing to innovative connected-device solutions. ### Accountabilities - Develop, maintain, and own Python integrations, proxy libraries, and software components that connect hardware products with Home Assistant, ESPHome, and related ecosystems. - Build software that interfaces with hardware protocols and peripherals, translating low-level device behavior into intuitive user experiences. - Collaborate closely with hardware, embedded Linux, and cross-functional engineering teams to deliver reliable and scalable integrations. - Contribute to open-source projects by enhancing integrations, configuration flows, entity models, platform functionality, and overall ecosystem compatibility. - Ensure high code quality through testing, documentation, code reviews, and long-term maintainability. - Investigate and resolve integration issues, communication failures, compatibility challenges, regressions, and protocol-related edge cases. - Maintain comprehensive unit, integration, and hardware-in-the-loop test coverage while supporting community contributions through constructive code reviews and technical guidance. ## Requirements - Extensive professional experience with Python development, including asynchronous programming, testing frameworks, type annotations, and scalable software architecture. - Demonstrated contributions to large open-source projects with experience in public code reviews, pull requests, and asynchronous collaboration workflows. - Experience developing integrations, APIs, automation systems, device communication layers, or software for connected hardware and IoT environments. - Familiarity with communication protocols such as Bluetooth, Zigbee, USB, UART, MQTT, mDNS, SPI, I2C, or similar technologies. - Strong troubleshooting and debugging skills across distributed systems and complex software environments. - Ability to quickly understand large codebases, independently solve technical challenges, and deliver maintainable solutions. - Excellent written communication skills with a collaborative, community-oriented mindset and the ability to work effectively in distributed remote teams. - Experience with Home Assistant, ESPHome, Raspberry Pi, embedded Linux, or large-scale hardware deployments is considered a strong advantage. ## Benefits - Competitive compensation aligned with the upper range of local market benchmarks, with country-specific salary packages. - Annual performance bonus based on company performance. - Fully remote employment with flexible working hours and asynchronous collaboration. - Five weeks of paid vacation plus paid sick leave where required. - Paid parental leave, including six weeks paid and six weeks unpaid during the first year after birth. - Work hardware budget, with the opportunity to keep equipment after three years. - Annual smart home budget to explore and maintain the latest connected devices. - Annual learning and development budget for professional growth. - 50% reimbursement of home internet expenses. - Dedicated time every two weeks to work on personal projects, including eligible Home Assistant-related initiatives. - Statutory local employment benefits based on your country of residence. 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