Back-End Developer

Responsibilities:

• Design and implement robust, scalable, and secure RESTful APIs;
• Develop applications on embedded platforms, integrating closely with hardware and network systems;
• Architect and document backend software systems with a focus on performance, maintainability, and scalability;
• Perform network programming and system-level integration across multiple subsystems;
• Collaborate with cross-functional teams including Frontend Engineering, UX Design, and QA to ensure cohesive product development;
• Ensure high-quality deliverables and meet project timelines consistently;
• Participate in code reviews and actively share knowledge to foster a culture of continuous improvement.

Requirements:

• 5+ years of experience with Golang in a production environment;
• 5+ years of experience working with relational databases (RDBMS) such as PostgreSQL or MySQL;
• Demonstrated expertise in designing and developing RESTful APIs;
• Strong analytical and problem-solving skills, with a proactive and adaptable mindset;
• Proficiency in AI development environments (e.g., Cursor, Claude Code) and expertise in AI development techniques, such as Spec-Driven Development, are required;
• Fluent in English.

Nice to have:

• Experience developing or maintaining IoT platforms or connected device ecosystems;
• Knowledge of IoT protocols such as MQTT, CoAP, or WebSockets for efficient communication;
• Familiarity with Matter and Thread protocols, including their architecture, security, and implementation considerations;
• Understanding of device provisioning, firmware over-the-air (OTA) updates, and device lifecycle management;
• Exposure to edge computing paradigms and cloud-to-device integration patterns;
• Proficiency in asynchronous programming and event-driven systems;
• Experience with telemetry data collection, real-time data processing, and time-series data stores;
• Working knowledge of IoT security best practices, including authentication, encryption, and secure communication;
• Familiar with Debian/Ubuntu, Linux application/service development, and CLI environment;
• Familiar with Linux networking stack, routing, packet analysis (tcpdump/Wireshark), and firewall management.

Benefits: 

• International work environment and work with global development teams;
• Ability to deliver software that is used by millions of people across the globe;
• Opportunity to leverage and integrate modern AI tools into product development;
• Access to all Ubiquiti products;
• Private Medical insurance (UoP only);
• Hybrid approach - office in Krakow;
• Flexible work hours;
• Compensation package matching global standards, including competitive salary depending on your qualification and background;
  • UoP: 22,000–28,000 PLN gross monthly;
  • B2B: $6,000–$8,500 USD gross monthly;
• A-class office with all the necessities - snacks, drinks, free parking, etc!