Senior Elixir Software Engineer

Senior Elixir Software Engineer - Distributed Systems

Industry: Software Development / AI

Location: USA - Fully Remote

Salary: $150-200,000 Base Salary

X4 Engineering have partnered with an innovative AI infrastructure start-up that’s building the next generation of real-time communication systems for intelligent software and enterprise applications.

The business is focused on creating scalable infrastructure that enables AI systems, autonomous agents, and enterprise platforms to interact seamlessly in real time. Their technology helps organisations deploy advanced AI-driven workflows more effectively by improving interoperability, communication, and coordination between complex systems.

Following continued growth, they’re now looking for a Senior Distributed Engineer to help develop the core backend infrastructure powering these real-time platforms. The role will involve building low-latency services, distributed systems, and scalable messaging architectures designed to support high-performance AI communication environments.

Key Requirements:

• Bachelor’s or Master’s degree in a related field: Computer Science, Engineering, or a similar area.
• 6+ years of experience building distributed systems using Elixir, Go, Rust and/or C++.
• Strong experience building scalable, high-throughput backend infrastructure and low-latency systems.
• Experience developing real-time messaging platforms or systems handling large volumes of concurrent interactions.
• Strong understanding of networking fundamentals including TCP/UDP and protocol design.
• Deep knowledge of concurrency, multiprocessing, and multithreaded architectures.
• Experience working on clustering, presence, or real-time communication infrastructure.
• Experience working in cloud-native or distributed production environments.
• Open to learning and working extensively with Elixir, Phoenix, and OTP-based systems.
• Passion for distributed systems, real-time communication technologies, and next-generation AI infrastructure.

If you’re interested in the role please apply via the job advert or get in touch with a.koivio@x4engineering.