Senior Fullstack Developer (Adtech)

TL;DR

Senior Fullstack Developer (Adtech): Building and maintaining scalable full-stack applications for ad-tech infrastructure analytics with an accent on high-performance distributed systems. Focus on designing integrations with SSPs/DSPs and implementing AI/ML-powered automation and agentic workflows.

Location: Must be based in Ukraine (Remote or Onsite available)

Company

A custom product engineering company with over 4,000 global experts delivering complex software solutions across various industries.

What you will do

• Design, develop, and maintain full-stack applications using React and Node.js.
• Build core analytics infrastructure to process billions of events from websites and apps.
• Develop integrations with Supply-Side (SSP) and Demand-Side (DSP) platforms.
• Integrate AI/ML capabilities, including LLM APIs and on-premise model deployments.
• Create agentic workflows and AI-powered automation.
• Mentor junior developers and contribute to engineering best practices.

Requirements

• 5+ years of professional software development experience.
• Strong proficiency in JavaScript, TypeScript, React, and Node.js.
• Experience building high-performance, low-latency distributed systems.
• Understanding of RESTful APIs, microservices, and cloud platforms like AWS or GCP.
• Experience with SQL/NoSQL databases and data streaming technologies.
• Must be based in Ukraine.

Culture & Benefits

• Radical flexibility with the choice between remote work or office attendance.
• Company-paid medical insurance and mental health support.
• Access to Udemy, language courses, and professional certifications.
• Participation in internal meetups, conferences, and workshops.
• Collaborative One Team culture focusing on innovation and global impact.