Backend Systems Engineer (Python/C++)

Posted Yesterday
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Chicago, IL, USA
In-Office
Entry level
Artificial Intelligence • Blockchain • Information Technology • Software
The Role
Design, implement, and optimize low-level software systems, networking components, protocols, and performance-critical applications. Develop unit, integration, and stress tests; debug memory leaks, packet flows, and multithreaded execution using GDB and Wireshark. Apply algorithms, data structures, and concurrency techniques while collaborating across teams to maintain modular codebases and reliable releases.
Summary Generated by Built In

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 in C++ and Python. 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 with Linux/BashGit/GitHubGDB, and Wireshark. 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.



Skills Required

  • Bachelor of Science in Computer Science, Computer Engineering, or a related technical discipline
  • Strong proficiency in C++ and Python
  • Understanding of TCP/UDP networking principles, socket programming, caching, operating systems, and computer architecture
  • Hands-on experience with Linux and Bash
  • Hands-on experience with Git and GitHub
  • Hands-on experience with GDB
  • Hands-on experience with Wireshark
  • Knowledge of object-oriented design, algorithmic complexity, recursive problem-solving, and concurrent state management
  • GPA of 3.5 or higher
  • Familiarity with C, C#, Java, SQL, or x86 Assembly
  • Experience with SFML, Unity, or VR/AR engines
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The Company
23 Employees

What We Do

Performix Business Services LLC is a Minnesota-based technology company specializing in custom software development and IT consulting. Founded in 1997, the firm provides innovative AI, blockchain, cloud, IoT, and Web3 solutions for SMBs, enterprises, and government agencies. They focus on driving business efficiency and digital transformation through software solutions, IT training, and project outsourcing.

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