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Senior Java Developer at Sigma Software - ApplyBlast

Senior Java Developer

Sigma Software

3 months ago

4.4 on Glassdoor

Warsaw, Masovian Voivodeship, Poland

Onsite

Full Time

Senior

0 applicants

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About this role

This role involves designing and implementing a scalable, event-driven communications platform that handles multi-channel delivery across email, SMS, voice, and push. The engineer will build highly reliable message delivery systems, manage real-time processing pipelines, and ensure operational stability under high load while adhering to strict compliance requirements. Collaboration with product and engineering teams is essential to define communication flows and contribute to long-term architectural evolution.

Responsibilities

Design and implement scalable event-driven communications platforms
Build highly reliable and fault-tolerant message delivery systems
Manage large-scale real-time event processing pipelines
Implement provider integrations and external messaging service adapters
Ensure system scalability and performance under high load

Skills

About Sigma Software

sigma.software

Headquarters

Stockholm, Stockholm, Sweden

Company Size

1001-5000 employees

Founded

2002

View Profile

Sigma Software Group is a technology consulting and software engineering company that delivers custom software development, product engineering, QA, and IT consulting to businesses worldwide. They help clients with digital transformation projects across industries—bringing expertise in cloud, data & analytics, AI/ML, mobile and web development, and dedicated engineering teams. Operating across multiple countries, Sigma partners with enterprises and startups to accelerate product delivery and scale engineering capacity. Clients choose them for deep technical expertise, end-to-end delivery and flexible engagement models.