Back-End Developer (Mid-Senior Level)

We make smart devices and push the boundaries of the IoT sector every single day. Shelly is a strong company with a startup mindset — no bureaucracy, just bold ideas, creative problem-solving, and a team that genuinely loves what they do.

We turn every spark of an idea into a real product — from first concept to full production — and bring smart automation to over 3 million households around the world. From heating, lighting, appliances, curtains, and more — if it runs on electricity, chances are we can automate it. We’ve built over 100 smart devices (and counting!), and everything happens right here at our headquarters in Sofia.

Sounds exciting? Keep reading…

Back-End Developer (Mid-Senior Level)

Your Role

As a Back-End Developer at Shelly Group, you’ll play a pivotal role in shaping the backbone of our cloud-based home automation platform. You’ll design and build scalable, real-time services that power smart devices across more than 60 countries, working at the intersection of innovation, performance, and reliability.

What makes you a great fit:

• You have proven experience in back-end development at a mid to senior level, with a strong grasp of modern web service architecture.
• You possess expert-level knowledge of Node.js and are comfortable working with back-end frameworks to build robust systems.
• You are proficient in TypeScript and thrive in a Linux-based development environment.
• You have hands-on experience with Redis for data storage, caching, and fast access patterns.
• You are confident in designing and building RESTful APIs and are familiar with microservices architecture.
• You have worked with both SQL and NoSQL databases and know when to use which.
• You bring sharp debugging skills and a natural drive to solve complex technical challenges.
• You follow software engineering best practices and have experience with CI/CD pipelines and tools.
• You collaborate well with front-end developers and enjoy working across cross-functional teams.
• You’ve worked with (or are eager to learn) cloud platforms — experience with Google Cloud Platform (GCP) is a big plus.
• You might also have a bonus edge if you’re familiar with front-end frameworks like Vue.js, Vite, or Svelte — even if it’s just on the side.

Job responsibilities:

• Develop, optimize, and maintain the core of our cloud-based home automation platform — the tech that helps users control smart devices worldwide.
• Build and scale high-performance, real-time services that support device management and automation at a global level.
• Design and maintain clean, efficient, and well-documented RESTful APIs to support both internal teams and external integrations.
• Collaborate closely with front-end developers to ensure seamless API integration and smooth data flow across the platform.
• Monitor and improve system performance, security, and reliability — you’ll play a key role in keeping our platform fast, stable, and secure.
• Investigate and resolve performance bottlenecks, ensuring our services are always running at their best.
• Contribute to shaping a scalable back-end architecture by researching and applying modern best practices.
• Work within our CI/CD pipelines to streamline and automate deployment processes.
• Actively participate in code reviews, technical discussions, and knowledge-sharing sessions that drive innovation and team growth.

What is in it for you:

Work

• A welcoming, collaborative team
• Meaningful products and services that people actually use and love.
• Learning opportunities to sharpen your skills
• Competitive salary + Performance bonuses
• Modern office in a great location
• Fun teambuildings and company events

Lifestyle

• 26 days of paid annual leave
• Flexible working hours
• Additional health insurance
• Free access to all Shelly devices (yes, you can smarten up your whole home!)
• Multisport Card
• Fully sponsored yearly public transport card

Ready to join the Shelly Revolution?

Let’s build the future of smart living together.

Hit that apply button- we can’t wait to meet you.