Alex Staff Agency
AdTech
SeniorJavaEngineer
Neural analysis suggests this role is
optimal for Senior candidates.
“Senior Java Engineer at Alex Staff Agency. Skills: Java, Spring Boot, Distributed Systems, Low-latency. Design bidding systems. Scale bidding systems”
What You'll Achieve.
meet strict low-latency SLA/SLO targets
Industry & Context.
performance optimization
Location outside of the Russian Federation, Candidates from Belarus are eligible only if they possess an active legal entity/IP in Georgia or Europe
What They're Looking For.
Must Have
5+ years of commercial software development experience with Java, Deep knowledge of the Spring ecosystem, practical experience with reactive/asynchronous programming, Solid understanding of distributed systems, concurrency, performance tuning at the JVM level, verbal English skills at B2 level or higher, Commercial programming experience or familiarity with Go, Hands-on experience with high-load and Big Data tools, Real-world experience or deep interest in LLMs and AI orchestration tools, Familiarity with frontend development using ReactJS and TypeScript
Nice to Have
Spring Boot, WebFlux, Golang, Aerospike, ClickHouse, Apache Kafka, LangChain, LangGraph, N8N, React, TypeScript
What You'll Do.
Design bidding systems
Scale bidding systems
Maintain bidding systems
Optimize backend services
Build data architectures
Manage data architectures
Integrate AI frameworks
Take ownership of features
Contribute to frontend layer
How You'll Work.
Team & Collaboration
collaborate directly with a global engineering team
Communication Scope
verbal English skills at B2 level; explain architectural decisions
Process & Methodology
Take full ownership of features end-to-end
Full Job Description
The position is open for a global, publicly traded AdTech market leader. The company's platforms handle over 1 trillion requests per day, operating within a highly optimized real-time cloud architecture across dozens of servers and processing terabytes of data daily. The engineering team focuses on intense performance optimization, low-latency infrastructure, asynchronous data streaming, and cutting-edge GenAI research and development. * **Salary: upto** $5,000 USD / month. * **Format:** Full-time. Hybrid (Budva, Montenegro) or 100% Remote globally * **Contract Type:** B2B Contract ### **Responsibilities** * Design, scale, and maintain real-time advertising bidding systems (DSPs, RTB Exchanges, and SSP platforms). * Optimize backend services using Java (Spring Boot / WebFlux) and Go (Golang) to meet strict low-latency SLA/SLO targets. * Build and manage data-intensive architectures utilizing high-load storage solutions (Aerospike, ClickHouse) and event-driven messaging (Apache Kafka). * Participate in R&D initiatives involving GenAI, integrating Agentic AI frameworks (LangChain, LangGraph, N8N) for workflow automation and predictive analytics. * Take full ownership of features end-to-end, contributing to the frontend layer (React / TypeScript) for internal tools and dashboards when required. **Requirements** * 5+ years of commercial software development experience with Java as the primary language. * Deep knowledge of the Spring ecosystem (Boot, Data, MVC, Security, Cloud) and strong practical experience with reactive/asynchronous programming (Spring WebFlux / Project Reactor). * Solid understanding of distributed systems, concurrency, and performance tuning at the JVM level. * Strong verbal English skills at B2 level or higher, with the ability to explain architectural decisions and collaborate directly with a global engineering team during voice calls. * Location outside of the Russian Federation due to contractual and payment restrictions. Candidates from Belarus
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