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Open nowPosted 131 days ago

Senior Java Engineer

Workable (global search)108,016 open roles

Where
Moldova
Work mode
Remote
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Your applicationOpen nowSenior Java EngineerWorkable (global search) · Moldova

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The clock on this job

Early applications get read.

7.9% of postings close within 7 days. Measured by our own scanner across the market. Workable (global search) postings stay open a median of 7 days.

Share of postings closed within
  1. 1.6%1 day
  2. 3.6%3 days
  3. 7.9%7 days
  4. 14.9%14 days
  5. 34.0%30 days
This job: posted 131 days ago

Workable (global search) median: 7 days open

The posting

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 are eligible only if they possess an active legal entity/IP in Georgia or Europe for international payments.
  • Commercial programming experience or strong familiarity with Go (Golang).
  • Hands-on experience with high-load and Big Data tools including Apache Kafka, ClickHouse, and Aerospike.
  • Real-world experience or deep interest in LLMs and AI orchestration tools such as LangChain, LangGraph, or N8N.
  • Familiarity with frontend development using ReactJS and TypeScript.

Benefits

  • Opportunity to work on production infrastructure handling 1 trillion + daily requests.
  • Work within a team of senior engineers with direct impact on the platform's architecture.
  • Choice between a fully remote schedule or a hybrid format from the office in Budva, Montenegro.
  • Stable monthly payments in USD via international B2B contracts.
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