Fidelis Cybersecurity, Inc. is hiring a Software Engineer III to build and maintain secure communication components for mission-critical systems. In this role, you will focus on SSH, TLS/SSL, and related cryptographic services on enterprise platforms, developing system-level software used by global financial institutions and Fortune 500 companies to secure their mission-critical environments.
What You'll Do
- Design, develop, test, and troubleshoot software across different hardware, database, and programming technologies.
- Write clean, maintainable code based on functional and technical specifications.
- Analyze and improve software performance.
- Create and maintain technical documentation.
- Collaborate in a multiple developer environment.
What We're Looking For
- 5+ years of C/C++ programming experience delivering software solutions, including system-level development (networking, sockets, secure communication components such as SSH and TLS/SSL).
- Experience with developing integrations with terminal emulators in VT100/VT102/6530 and other formats.
- 3–5 years of experience working with relational databases and writing SQL scripts.
- Hands-on experience with software design patterns and principles.
- Strong familiarity with Agile and DevSecOps practices.
- Experience developing system-level, shippable software, ideally including secure connection handling, certificate management, cryptographic libraries (e.g., OpenSSL), and key exchange workflows.
- Expertise building software for nix-based operating systems, including POSIX APIs, daemon/service development, and TCP/IP networking internals.
- Expertise with *nix-based scripting languages.
- Able to manage multiple activities/projects in a fast-paced environment.
- Experienced using Git-based source control.
- Experience building unit tests and meeting code quality standards.
- Strong understanding of secure development practices, including handling of keys/certificates, memory safety, and protocol-driven security controls.
- Familiarity with modern IDEs and toolchains for configuration, build, and development.
- Understanding of REST APIs, Web Services, TCP/IP, and JSON, including fundamentals of secure network handshakes (TLS/SSL).
Nice to Have
- Experience with mission-critical or fault-tolerant platforms is a strong plus (HPE Nonstop experience ideal but not required).
- Knowledge of the HPE Nonstop operating system and environment is a strong differentiating factor.
Technical Stack
- C/C++, SQL, SSH, TLS/SSL, OpenSSL, POSIX APIs, TCP/IP, REST APIs, JSON, Git
Team & Environment
You will collaborate in a multiple developer environment.
