Junior Systems Software Engineer - Networking

Performix; Phoenix (AZ); On-site; USD 70,000 - 110,000; Full time

Job summary

Performix in Phoenix, AZ is seeking a Junior Systems Software Engineer to join our core engineering team. You will design, implement, and optimize low-level architecture, networking protocols, and performance-critical systems.

You will prototype, benchmark, and contribute to release-ready code in a fast-paced environment. The ideal candidate has a solid CS foundation, hands-on experience with C++ and Python, and a passion for building responsive, scalable software.

Qualifications

• Bachelor of Science in Computer Science, Computer Engineering, or related technical discipline (GPA 3.5+ preferred).
• Strong proficiency in C++ and Python; familiarity with C, C#, Java, SQL, or x86 Assembly is a plus.
• Solid understanding of TCP/UDP networking, socket programming, caching, operating systems, and computer architecture.

Responsibilities

• Design, implement, and maintain custom networking components, client-server models, and protocol resolvers (UDP/TCP, DNS, socket communications).
• Apply data structures, memory management, and graph search heuristics (e.g., A*, custom hashing, priority queues) to solve complex performance and indexing challenges.
• Testing & Quality Assurance: Develop and execute comprehensive unit, integration, and stress tests to validate network state synchronization, catch edge cases, and eliminate execution bottlenecks.
• Debugging & Problem Solving: Utilize low-level debugging tools (GDB, Wireshark) to trace memory leaks, analyze packet flow, and debug asynchronous multi-threaded or multi-client execution paths.
• Cross-Functional Collaboration: Partner with cross-functional teams to design clean, modular codebases and maintain version-control integrity across all release cycles.

Education

Bachelor of Science in Computer Science

Bachelor of Science in Computer Engineering

Tools

C++

Python

C

C#

Java

SQL

x86 Assembly

TCP/UDP

Socket Programming

Linux/Bash

Git/GitHub

GDB

Wireshark

SFML

Unity

Job description

Performix in Phoenix, AZ is seeking a Junior Systems Software Engineer to join our core engineering team. You will design, implement, and optimize low-level architecture, networking protocols, and performance-critical systems.

You will prototype, benchmark, and contribute to release-ready code in a fast-paced environment. The ideal candidate has a solid CS foundation, hands-on experience with C++ and Python, and a passion for building responsive, scalable software.