Junior Backend Systems Engineer (Python/C++)

Performix; Phoenix (AZ); On-site; USD 100,000 - 150,000; Full time

Job summary

Performix in Phoenix, AZ is seeking a detail-oriented Junior Systems Software Engineer to join our core engineering team. The role focuses on low-level architecture, network protocols, and high-performance systems in a manufacturing context.

The ideal candidate has strong C++ and Python skills, hands-on Linux/Bash experience, and familiarity with debugging tools like GDB and Wireshark. Collaboration with cross-functional teams is essential.

Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, or a related technical discipline (GPA 3.5+ preferred).
• Strong proficiency in C++ and Python.
• Experience with Linux/Bash, Git/GitHub, GDB, and Wireshark.

Responsibilities

• Design, implement, and optimize low-level application architecture, networking protocols, and performance-critical systems.
• 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 performance and indexing challenges.
• Develop and execute unit, integration, and stress tests to validate network state synchronization and identify bottlenecks.
• Utilize debugging tools to trace memory leaks and analyze packet flow across multi-threaded or multi-client execution paths.

Skills

C++

Python

TCP/UDP

Socket programming

Linux/Bash

Git/GitHub

GDB

Wireshark

SFML

Unity

VR/AR engines

Education

BS in CS/CE or related

Tools

SFML

Unity

VR/AR engines

GDB

Wireshark

Job description

Full time | Performix | United States

Job Information

• Manufacturing
• Work Experience 5+ years
• City Phoenix
• State/Province Arizona
• 85138

Job Description

• We are seeking a detail-oriented, highly analytical Junior Systems Software Engineer to join our core engineering team.
• In this role, you will design, implement, and optimize low-level application architecture, networking protocols, and performance-critical systems. The ideal candidate brings a strong foundation in computer science fundamentals, hands-on experience with C++ and Python, and a passion for building responsive, scalable software.

Key Responsibilities

• Systems & Network Architecture: Design, implement, and maintain custom networking components, client-server models, and protocol resolvers (UDP/TCP, DNS, socket communications).
• Algorithm & Performance Optimization: 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.

Key Requirements

• Education: Bachelor of Science in Computer Science, Computer Engineering, or a related technical discipline (GPA 3.5+ preferred).
• Core Languages: Strong proficiency inC++andPython. Familiarity with C, C#, Java, SQL, or x86 Assembly is a plus.
• Systems & Networking: Solid understanding of TCP/UDP networking principles, socket programming, caching mechanisms, operating systems, and computer architecture.
• Tools & Environment: Hands-on experience withLinux/Bash,Git/GitHub,GDB, andWireshark. Experience with SFML, Unity, or VR/AR engines is desirable.
• CS Fundamentals: Proven command of object-oriented design, algorithmic complexity, recursive problem-solving, and concurrent state management.

Desired Competencies

• Self-starter capable of managing end-to-end projects-from requirement mapping to comprehensive testing.
• Passion for interactive media, high-performance computing, or game engine mechanics.
• Strong written and verbal communication skills for technical documentation and code reviews.

Requirements

• C++, Python, TCP/UDP, socket programming, Linux, Git, GDB, Wireshark, object-oriented design, algorithmic complexity, concurrency
• C++, Python, C, C#, Java, SQL, x86 Assembly, TCP, UDP, DNS, socket programming, caching mechanisms, operating systems, computer architecture, Linux, Bash, Git, GitHub, GDB, Wireshark, SFML, Unity, VR, AR, object-oriented design, algorithmic complexity, recursion, concurrent state management, data structures, memory management, graph search heuristics, A, custom hashing, priority queues