Junior Backend Systems Engineer, Python/C++

Performix Business Services, LLC

. Design, implement, and maintain custom networking components, client-server models, and protocol resolvers including UDP/TCP, DNS, and socket communications .

Posted 10/27/2026contractChicago • Illinois • United StatesJuniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and implementing custom networking components and protocols, with strong proficiency in C++ and Python. Capable of managing end-to-end projects while ensuring high performance and effective debugging using tools like GDB and Wireshark.

Highest-signal resume keywords

C++ ProgrammingPython ProgrammingTCP/UDP Networking PrinciplesGDB DebuggingWireshark Packet Analysis

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Socket ProgrammingData StructuresMemory ManagementGraph Search HeuristicsUnit TestingIntegration TestingStress TestingObject-Oriented DesignAlgorithmic ComplexityConcurrent State Management

Soft Skills

Strong Written CommunicationStrong Verbal CommunicationSelf-StarterCollaborative Teamwork

Tools & Technologies

LinuxBashGitGitHubSFMLUnityVR/AR Engines

Industry Keywords

Computer ScienceComputer EngineeringInteractive MediaHigh-Performance ComputingGame Engine Mechanics

Tech Stack

Tools & technologies

AssemblyDNSJavaLinuxPythonSQLUnityC++

About the role

Key responsibilities & impact

Design, implement, and maintain custom networking components, client-server models, and protocol resolvers including UDP/TCP, DNS, and socket communications
Apply data structures, memory management, and graph search heuristics such as A*, custom hashing, and priority queues to solve performance and indexing challenges
Develop and execute unit, integration, and stress tests to validate network state synchronization, catch edge cases, and eliminate execution bottlenecks
Use GDB and Wireshark to trace memory leaks, analyze packet flow, and debug asynchronous multi-threaded or multi-client execution paths
Partner with cross-functional teams to design clean, modular codebases and maintain version control integrity across release cycles

Requirements

What you’ll need

Bachelor's degree in Computer Science, Computer Engineering, or a 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 principles, socket programming, caching mechanisms, operating systems, and computer architecture
Hands-on experience with Linux/Bash, Git/GitHub, GDB, and Wireshark
Experience with SFML, Unity, or VR/AR engines is desirable
Proven command of object-oriented design, algorithmic complexity, recursive problem-solving, and concurrent state management
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