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Senior Java Developer
Location
Poland
Posted
3 days ago
Salary
0
Seniority
Senior
Job Description
Senior Java Developer
Sigma Software Group
• Design and implement a scalable event-driven communications platform • Build highly reliable and fault-tolerant message delivery systems • Manage large-scale real-time event processing pipelines • Design and implement multi-channel delivery pipelines across email, SMS, voice, and push channels • Handle compliance requirements, consent management, and communication policies • Support emergency and high-priority notification workflows • Implement provider failover and resiliency strategies to ensure delivery continuity • Build tracking systems for delivery status, retries, and engagement events • Design and implement observability, reporting, and analytics infrastructure • Develop event processing and message orchestration workflows • Implement provider integrations and external messaging service adapters • Ensure system scalability, throughput, and performance under high load • Collaborate with product and engineering teams on communication flows and requirements • Contribute to architectural decisions and long-term platform evolution • Ensure operational stability, reliability, and maintainability of the system
Job Requirements
- At least 5 years of software development experience
- Strong expertise in Java development
- Experience with distributed systems
- Strong experience with event-driven architectures
- Experience with messaging systems, queues, streams, and brokers
- Experience designing high-scale APIs and backend services
- Strong understanding of system reliability and fault tolerance
- Upper-Intermediate English level
- Experience with email or SMS delivery systems would be a plus
- Experience with telecom or messaging infrastructure would be a plus
- Experience with marketing automation platforms would be a plus
- Experience with notification or engagement systems would be a plus
- Experience with workflow engines would be a plus
- Experience with compliance-heavy systems, including consent and GDPR-like regulations would be a plus
- Experience with high-throughput event processing systems would be a plus
- Experience with cloud-native platforms, preferably GCP would be a plus
Benefits
- Work remotely in an international engineering environment
- Influence architectural decisions
- Opportunity to work on long-term product development
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