Senior Elixir Software Engineer

Industry: Software Development / AI

Location: USA

Salary: $150-200,000 Base Salary

X4 Engineering is proud to be partnering with a fast-growing, ambitious start-up that’s reshaping the future of AI communication.

This company is building a universal interface between AI agents and the real world — a platform that allows seamless communication between AI systems and business applications. The result? Businesses can deploy intelligent, production-ready solutions faster and more efficiently than ever before.

As part of their continued growth, they’re looking for a Senior Software Engineer with strong experience in Elixir, Phoenix, and LiveView to help build the core of their real-time communication infrastructure. You’ll be working on low-latency services, scalable backend systems, and distributed architectures that drive AI-powered messaging between intelligent agents and enterprise environments.

Key Requirements:

• Bachelor’s or Master’s degree in a related field, Engineering, or a similar area.
• 5+ years of production Elixir experience.
• Strong expertise with Phoenix Framework and Phoenix LiveView.
• Experience building real-time systems with Phoenix Channels/WebSockets.
• Solid understanding of OTP principles and distributed systems.
• Experience with PostgreSQL and Ecto.
• Track record of building and scaling production APIs.
• Experience with cloud platforms (AWS, GCP, or Azure) and distributed infrastructure.

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

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