Prosum Inc

Senior Software Engineer

Prosum Inc$150K — $175K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 7+ years of software engineering experience in C/C++ systems development.
  • Experience creating cryptographic or security-sensitive software.
  • Strong grasp of secure coding practices and performance optimization.
  • Proficiency in Python for automation and tooling.
  • Ability to debug complex software environments effectively.
  • Familiarity with Git-based workflows.
  • Knowledge of memory management and Linux/POSIX systems.

Responsibilities

  • Design and develop cryptographic software using C/C++.
  • Maintain high-quality, secure software for cloud environments.
  • Drive architectural decisions prioritizing security and performance.
  • Create Python frameworks for automation and testing.
  • Conduct code reviews to ensure secure coding standards.
  • Implement secure networking protocols like TLS and IPsec.
  • Collaborate with teams to deliver customer-focused software solutions.
  • Mentor engineers to elevate engineering standards.

Benefits

  • Comprehensive medical, dental, and vision coverage.
  • 401(k) with employer matching.
  • A competitive benefits package.
  • Opportunities for technical leadership and career advancement.
Full Job Description
Job Description

Senior Software Engineer
Cryptography & Systems Development

Role Type: Senior Software Engineer / Technical Leader (Individual Contributor)
Core Technologies: C/C++, Cryptography, Python, Linux/POSIX, Systems Programming
Focus Areas: Secure software, cryptographic systems, cloud-native infrastructure, high-assurance applications
Position Overview
We are seeking a Senior Software Engineer with deep expertise in systems programming and secure software development. This hands-on technical leadership role is ideal for an experienced engineer who can translate advanced cryptographic technologies into secure, scalable, production-ready software.

The successful candidate will influence software architecture, develop security-critical components, optimize performance, mentor engineers, and help deliver high-quality products in security-sensitive environments.
Key Responsibilities
  • Design, develop, and optimize cryptographic and security-sensitive software using C/C++.
  • Build and maintain production-quality software for secure, cloud-native environments.
  • Drive architectural decisions focused on security, scalability, performance, reliability, and maintainability.
  • Develop Python-based automation, testing frameworks, developer tools, and maintenance utilities.
  • Review code for correctness, memory safety, concurrency, performance, and secure coding best practices.
  • Implement and support secure networking technologies, including TLS, IPsec, and related communication protocols.
  • Collaborate with engineering leadership, product teams, and cross-functional stakeholders to deliver customer-ready software solutions.
  • Mentor engineers through technical guidance, code reviews, and knowledge sharing while helping elevate overall engineering quality.
Required Qualifications
  • 7+ years of professional software engineering experience with significant C/C++ systems development.
  • Demonstrated experience developing cryptographic, cybersecurity, or other security-sensitive software.
  • Strong understanding of cryptographic implementation, secure coding practices, performance optimization, and software correctness.
  • Experience optimizing low-level systems software for performance, reliability, and security.
  • Proficiency with Python for automation, testing, scripting, and developer tooling.
  • Strong debugging and troubleshooting skills in complex software environments.
  • Experience with Git-based development workflows.
  • Solid understanding of memory management, concurrency, compiler toolchains, and Linux/POSIX operating systems.
  • Working knowledge of networking protocols and secure communications, including TLS and/or IPsec.
Preferred Qualifications
  • Experience developing secure applications using Docker and Kubernetes.
  • Familiarity with container security, software supply chain security, image signing, SBOM generation, and vulnerability management.
  • Experience working with virtualization technologies such as QEMU or Linux KVM.
  • Familiarity with AI-assisted software development tools and best practices for incorporating them into secure engineering workflows.
  • Experience building software for regulated, safety-critical, or other high-assurance environments.
Education
Bachelor's degree or higher in Computer Science, Computer Engineering, Software Engineering, or a related technical discipline, or equivalent professional experience.
Preferred Certifications
The following certifications are considered an asset:
  • Certified Kubernetes Application Developer (CKAD) or equivalent
  • Docker Certified Associate or equivalent
  • AWS Certified Developer or similar cloud certification
  • Linux Foundation Certified Engineer (LFCE), Red Hat Certified Engineer (RHCE), or equivalent
Compensation & Benefits
  • Competitive base salary of $150,000-$175,000 USD, commensurate with experience and qualifications.
  • Comprehensive medical, dental, and vision coverage.
  • 401(k) with employer matching.
  • Competitive benefits package and opportunities for technical leadership and career advancement.
This position offers the opportunity to solve complex engineering challenges at the intersection of systems programming, cybersecurity, and modern cryptography. You'll work alongside experienced engineers on products where software quality, security, and performance are fundamental to success while helping shape the technical direction of next-generation secure software platforms.

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About Prosum Inc

Prosum Inc. is an information technology services company that provides a wide range of services to clients in the healthcare, financial services, and technology sectors. The company was founded in 2002 and is headquartered in Irvine, California. Prosum has a team of over 200 professionals who specialize in software development, cloud computing, and cybersecurity. The company has completed projects for clients such as Kaiser Permanente, Wells Fargo, and Microsoft. Prosum is committed to providing innovative solutions that help clients achieve their business goals.
Learn more about Prosum Inc
Size
200 employees
Industry
Net Income
$2 million
Founded
2002
5 Year Trend
+20%
Revenue
$50 million

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