Senior Backend Software Engineer (Java) – AdTech/High-Scale Systems

Key Focus for This Role (Highest Priority)

• Experience in the AdTech industry – critical
• Hands-on experience with high-scale / distributed systems – critical

About the Role

We are looking for an experienced Senior Backend Engineer (Java) to join our engineering team. You will play a key role in designing and implementing highly scalable, resilient backend services for an AdTech ecosystem processing billions of events daily.

The ideal candidate has deep experience in large-scale, low-latency distributed systems, understands the challenges of data-intensive AdTech platforms, and is passionate about building reliable, secure services in the cloud.

Responsibilities

• Design and implement backend microservices in Java
• Build high-scale and low-latency distributed systems for real-time processing
• Contribute to solution architecture and technical decision-making
• Improve system performance, scalability, reliability, and security
• Deliver production-ready code, automated tests, and documentation
• Collaborate with cross-functional engineering, DevOps, and product teams
• Troubleshoot and resolve production incidents
• Mentor other engineers and participate in code reviews

Requirements

Critical experience

• AdTech domain experience (DSP/SSP, exchanges, bidding, RTB, tracking, attribution, etc.)
• Hands-on experience in high-scale / distributed systems

Technical must-haves

• 6+ years of backend development experience
• Strong proficiency in Java (11+)
• Solid understanding of:
  • Microservices architecture
  • Clean architecture and design patterns
  • Distributed caching and messaging
  • Concurrency concepts
• Experience with:
  • Spring Boot
  • Kafka / Kinesis / messaging queues
  • AWS or another cloud provider
  • CI/CD pipelines and container-based deployments

Nice to Have

• Experience optimizing cost and performance in cloud workloads
• Experience with DataDog or similar monitoring tools
• Familiarity with Scala or Kotlin
• Experience handling large-scale analytics pipelines

We Offer

• Opportunity to work on high-traffic, low-latency AdTech systems
• Ownership of architecture and technical decisions
• Competitive compensation and annual performance reviews
• Flexible schedule, remote options available
• Medical insurance, paid vacation and sick days
• Professional growth, certifications and mentorship opportunities

About the Project

You will be working on backend services powering programmatic advertising, responsible for:

• processing and aggregating real-time signals
• ensuring data consistency and reliability at scale
• delivering analytics and reporting for decision-making
• supporting product evolution and platform optimization