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Senior Java Engineer

Romania🌐 Remote💼 Full-time💰 $60,000–$60,000🗓 2026-05-26 → 2026-09-26

Core

Design, scale, and maintain real-time advertising bidding systems (DSPs, RTB Exchanges, and SSP platforms) handling over 1 trillion requests per day.

Role type

Senior Java Engineer (Real-time AdTech Infrastructure)

Builds

High-load real-time bidding infrastructure, data-intensive storage solutions, and GenAI workflow automation tools.

Domain

AdTech, Real-time Cloud Architecture, Big Data

Deliverable

production ML models | product features | infrastructure

Required skills

Java (Spring Boot, WebFlux), Go (Golang), Apache Kafka, ClickHouse, Aerospike, React/TypeScript, distributed systems, JVM performance tuning, GenAI/LLM orchestration (LangChain, LangGraph)

Preferred skills

Commercial programming experience, frontend development, AI research interest

Technologies

Spring Boot, WebFlux, Project Reactor, Apache Kafka, ClickHouse, Aerospike, React, TypeScript, LangChain, LangGraph, N8N

Responsibilities

Design and scale real-time advertising bidding systems; Optimize backend services for low-latency SLAs; Build and manage high-load data architectures; Participate in GenAI R&D for workflow automation; Contribute to internal frontend tools and dashboards.

Seniority

Senior, hands-on IC

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