Senior Java Backend Engineer - Real-Time DSP Platform

Job title: Senior Java Backend Engineer - Real-Time DSP Platform

About the Role The role focuses on developing and modernizing real-time DSP serving services that process bid requests, deliver ads, integrate with third-party platforms, and record measurement events used for reporting and billing. The team builds high-throughput, low-latency systems handling millions of requests per second, with emphasis on availability, data correctness, performance tuning, and scalable growth. Current initiatives include splitting a monolith into microservices, improving deployment automation, and moving measurement pipelines from batch processing to real-time streaming with Kafka.

What You'll Do

• Develop critical high-performance, large-scale services for DSP programmatic integrations and platform products
• Work closely with Product to translate business needs into technical solutions
• Write clean, production-ready code focused on high throughput and low latency
• Design, develop, test, and improve new and existing platform features
• Contribute to building large-scale distributed systems processing billions of transactions per day under strict SLAs
• Improve test coverage, monitoring, automation, and overall observability
• Follow Agile methodologies in a fast-paced engineering environment with quick delivery cycles

What We're Looking For

• 5+ years of commercial Java backend development with a focus on scalable backend systems
• Strong knowledge of the JVM ecosystem, including garbage collection, profiling, and performance tuning
• Experience with distributed REST APIs, fault tolerance, scalability, consistency, and resilience
• Hands-on experience with low-latency and high-throughput services
• Experience with real-time streaming pipelines using Kafka, Kinesis, or similar technologies
• Strong knowledge of data structures and algorithms
• Experience with web/application servers such as Tomcat
• Solid understanding of networking and load balancing concepts
• Production experience with Docker and Kubernetes
• Experience with Git and CI/CD pipelines, such as GitLab CI/CD or similar tools
• Interest in applying modern technologies and AI-assisted development tools
• Readiness to participate in PagerDuty rotation (1 week per quarter)
• Strong verbal and written communication skills, including the ability to explain complex technical trade-offs to both technical and non-technical stakeholders
• English: B2 or higher

Nice To Have

• Prior experience in the AdTech industry
• Familiarity with Python or Scala

Compensation & Benefits

• The global benefits package includes: Technical and non-technical training for professional and personal growth; Internal conferences and meetups to learn from industry experts; Support and mentorship from an experienced employee to help your professional growth and development; Health insurance; Sports activities to promote a healthy lifestyle; Flexible work options, including remote and hybrid opportunities; Referral program for bringing in new talent; Work anniversary program and additional vacation days.