Senior Backend Developer – Node.js & Go Expertise

Senior Backend Developer role at ITDS for a financial tech startup project. The position focuses on building high-performance REST APIs for telemetry data analysis, using Node.js and optionally Go. Hybrid work model in Krakow.

• Design and develop high-performance REST APIs to support telemetry data collection and analysis
• Contribute to architecture decisions and best development practices
• Collaborate with stakeholders to gather and implement telemetry requirements for products
• Work with AI-related tooling, chatbots, and agentic approaches within the platform
• Participate in long-term development efforts with a team of 10, primarily Poland-based
• Engage directly with clients, translating their needs into technical solutions
• Ensure scalable, reliable, and efficient backend systems

• At least 5 years of experience in backend development
• Strong hands-on experience with Node.js and REST API development
• Proven ability to build high-performance REST APIs
• Good communication skills with readiness to interact directly with clients
• Experience with AI integrations, chatbots, and agentic architectures
• Experience with Go (Golang) — highly beneficial but not mandatory
• English — communicative proficiency required