Senior Java Engineer

This is a fully remote position, open to applicants in Montenegro.

📋 Description

• Design, develop, and maintain real-time advertising bidding systems including DSPs, RTB Exchanges, and SSP platforms.

• Enhance backend services utilizing Java (Spring Boot / WebFlux) and Go (Golang) to achieve stringent low-latency SLA/SLO targets.

• Construct and oversee data-intensive architectures employing high-load storage solutions (Aerospike, ClickHouse) and event-driven messaging systems (Apache Kafka).

• Engage in R&D projects related to GenAI, incorporating Agentic AI frameworks (LangChain, LangGraph, N8N) for workflow automation and predictive analytics.

• Assume complete ownership of features from start to finish, contributing to the frontend layer (React / TypeScript) for internal tools and dashboards as needed.

⛳️ Requirements

• Over 5 years of commercial software development experience with Java as the primary programming language.

• Extensive knowledge of the Spring ecosystem (Boot, Data, MVC, Security, Cloud) and robust practical experience with reactive/asynchronous programming (Spring WebFlux / Project Reactor).

• Strong understanding of distributed systems, concurrency, and performance tuning at the JVM level.

• Proficient verbal English skills at a B2 level or higher, with the ability to articulate architectural decisions and collaborate directly with a global engineering team during voice calls.

• Candidates must be located outside of the Russian Federation due to contractual and payment restrictions. Candidates from Belarus are eligible only if they have an active legal entity/IP in Georgia or Europe for international payments.

• Experience in commercial programming or a strong familiarity with Go (Golang).

• Practical experience with high-load and Big Data tools such as Apache Kafka, ClickHouse, and Aerospike.

• Real-world experience or a significant interest in LLMs and AI orchestration tools like LangChain, LangGraph, or N8N.

• Knowledge of frontend development using ReactJS and TypeScript.

🏝️ Benefits

• Opportunity to work on production infrastructure processing over 1 trillion daily requests.

• Collaborate within a team of senior engineers, having a direct influence on the architecture of the platform.

• Flexibility to choose between a fully remote work schedule or a hybrid model from the office in Budva, Montenegro.

• Reliable monthly payments in USD through international B2B contracts.