Senior Full Stack Engineer

Ciklum is looking for a Senior Full Stack Engineer to join our team full-time in Ukraine. This role involves designing, developing, and maintaining scalable full-stack applications using React and Node.js, with a focus on high-performance distributed systems and AI integrations.

• Design, develop, and maintain scalable full-stack applications using React, Node.js
• Develop the core product offering to track and analyse billions of events on websites and apps
• Develop integrations with Supply-Side Platforms (SSPs) and Demand-Side Platforms (DSPs)
• Integrate AI/ML capabilities into our platform, including LLM APIs
• Build agentic workflows and AI-powered automation to enhance platform capabilities
• Collaborate with product, data science, and engineering teams
• Mentor junior developers and contribute to engineering best practices

• 5+ years of professional software development experience
• Strong proficiency in JavaScript/TypeScript, React, and Node.js
• Experience building high-performance, low-latency distributed systems
• Strong understanding of RESTful APIs, microservices architecture, and cloud platforms (AWS/GCP)
• Experience with databases (SQL and NoSQL) and data streaming technologies
• Excellent problem-solving skills and ability to work autonomously
• Strong communication skills and collaborative mindset

• Strong community: Work alongside top professionals in a friendly, open-door environment
• Growth focus: Take on large-scale projects with a global impact and expand your expertise
• Tailored learning: Boost your skills with internal events, Udemy access, language courses, and company-paid certifications
• Endless opportunities: Explore diverse domains through internal mobility
• Flexibility: Enjoy radical flexibility – work remotely or from an office
• Care: Company-paid medical insurance, mental health support, and financial & legal consultations