Senior Java Backend Engineer

Pentasia — Poland · Posted ~3 hours ago

Senior Other Remote Visa History ✓ €80000-€100000 gross/year

Skills

Java Spring Spring Boot Microservices Kafka or RabbitMQ Backend API development Scalable backend services iGaming experience Technical solution design Team mentoring Kafka RabbitMQ

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Summary ✨ AI‑Generated

A Senior Java Backend Engineer position that can be performed remotely from Poland under either a payroll or B2B arrangement. You will develop and maintain scalable Java services and APIs, drive technical solutions, mentor team members, and contribute to backend architecture. Candidates need substantial Java and microservices experience as well as hands-on experience in the iGaming industry and with Kafka or RabbitMQ.

Highlights

Fully remote role within Poland with a choice of payroll or B2B engagement, strong compensation, senior technical ownership, mentoring responsibilities, and work on scalable backend systems in the iGaming sector.

Description

🚀 We’re hiring: Java Back End Developer 📍| iGaming / Online Casino/Sportsbook | | Senior Java | Backend | Kafka/Rabbit MQ | 🌏 Remote in Poland in a payroll or B2B contract. 💰 Salary: From €80k to €100k gross/year (DEO) 🔸 MUST have iGaming/Gambling experience. My client is iGaming content provider of products for sportsbook and casino operators worldwide, is looking for a Senior Java Back End developer, to work remote in Poland, in a payroll system or B2B contract. Role Overview The Back-End Developer will be responsible for develop and maintain scalable Java backend services and APIs supporting the platform. Drive technical solutions, mentor team members, and actively contribute to team goals. Skills & Experience 8+ years of experience with Java, Spring, Springboot and Microservices2+ years of experience within the iGaming industry2+ years of experience with Kafka or RabbitMQ.Ideal candidates will have sportsbook, PAM, wallet, payments, or wider iGaming platform experience. Nice to have: Exposure to Kubernetes and AWSExperience with AI coding assistants and agentic development workflows Key Responsibilities Build greenfield backend services in modern Java for a high-scale PAM platform handling real-money transactions.Develop core services for player wallets, ledgers, payments, bonuses, and account lifecycle management.Design REST APIs and event-driven integrations using Kafka or similar messaging technologies.Deliver highly reliable systems with idempotency, strong test coverage, transaction integrity, and resilient error handling.Implement KYC/AML, responsible gaming, and audit-trail requirements.Build production-ready services with metrics, structured logging, distributed tracing, and alerting; participate in on-call.Contribute to architecture discussions, RFCs, code reviews, and technical design alongside Principal Engineers.Use AI-assisted development tools as part of the engineering workflow.Support third-party platform migration, including parity testing, data validation, and production cutover.