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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer, Quantum Networking & Cybersecurity - **Company:** Alphastaff - **Location:** Hoboken, NJ, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Abstraction Layers, C++ (Programming Language), CMake, Encodings, Cyber Security, Linux, Cryptographic Protocols, Field-Programmable Gate Array (FPGA), Information Theory, Internet Protocol Security (IP SEC), OSI Models, Python (Programming Language), Key Management, Network Security, PCI Express, Public Key Infrastructure, Quantum Key Distribution (QKD), RSA (Cryptosystem), Software Engineering, System Programming, Transmission Control Protocol (TCP), Toolchain, Transport Layer Security, High Performance Computing, Information Technology - **Published:** May 19, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=6147a9c1264fc1d8 ## About the Role Do you have experience in Python?, Do you have a Bachelor's degree?, * Bachelor's degree in Computer Science, Electrical Engineering, Physics, or Mathematics is required. * 6+ years of experience in software engineering with a focus on systems, security, or embedded devices. * Strong proficiency in C++ and Python. * Deep domain knowledge of Quantum Key Distribution (QKD) protocols (e.g., BB84, E91, BBM92) and their implementation requirements. * Experience implementing Error Correction codes (e.g., LDPC, Cascade, Winnow) or Forward Error Correction (FEC) specifically for noisy communication channels. * Understanding of Quantum Information concepts, including entanglement distribution, Bell state measurement, and qubit polarization encoding. * Familiarity with high-speed data acquisition and processing protocols (e.g., PCIe, DMA, UDP/TCP). * Familiarity with Linux system programming and build toolchains (CMake, GCC/Clang)., * Knowledge of classical cryptography standards (AES, RSA, ECC) and PKI infrastructure. * Familiarity with Post-Quantum Cryptography (PQC) algorithms (Lattice-based, Hash-based). * Experience with network security protocols (IPsec, TLS/SSL) and how QKD integrates into the OSI model. * Background in Information Theory and statistical analysis for security proofs. Preferred Education * Master's or Ph.D. in Quantum Information Science, Physics, or Cryptography is highly preferred. Skills C++, Python, Quantum Key Distribution (QKD), Error Correction, Cryptography, Network Security, Entanglement, Polarization, High Performance Computing, Linux, Algorithms. Disclaimers: AlphaStaff, Inc. and the Client are equal employment opportunity employers and do not discriminate against any applicant or employee based on race, color, sex, sexual orientation, gender identity, religion, national origin, age, past or present military service, disability, genetic information, or any other basis protected by applicable federal, state, or local laws. ## Description * Design and implement high-performance C++ software for real-time quantum cryptographic protocols, including entanglement-based polarization and time-energy QKD. * Develop efficient algorithms for classical post-processing in quantum-secured systems, specifically focusing on Error Correction (Information Reconciliation), Privacy Amplification to maximize secure key rates, and quantum authentication/confirmation. * Architect the Hardware Abstraction Layer (HAL) for distributed quantum networking nodes (Alice/Bob), interfacing with single-photon detectors, polarization controllers, and time-tagging electronics. * Optimize the full cryptographic stack for latency and throughput, ensuring seamless integration between quantum key generation, quantum authentication/confirmation, and the key management entity.. * Collaborate with optical physicists and FPGA engineers to deliver new features and provide updates as existing hardware is upgraded over time. * Develop simulation tools to model channel loss, noise sources, and the statistical performance of quantum protocols. ## Related Videos - [Quantum DevOps - Quantum Application Development](https://www.wearedevelopers.com/videos/1441-quantum-devops-quantum-application-development) - [Speeding up Web Apps performance with WebAssembly and Emscripten](https://www.wearedevelopers.com/videos/1985-speeding-up-web-apps-performance-with-webassembly-and-emscripten) - [Code to Road in < 12 hours](https://www.wearedevelopers.com/videos/1082-code-to-road-in-12-hours) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Quantum Computing - How Does It Work, How Will it Affect Us and When?](https://www.wearedevelopers.com/videos/100293-quantum-computing-how-does-it-work-how-will-it-affect-us-and-when) - [The Power of Developer Communities](https://www.wearedevelopers.com/videos/1109-the-power-of-developer-communities) ## Related Articles - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [7 Cloud Computing Trends Coming in 2025 for Developers](https://www.wearedevelopers.com/magazine/412-7-cloud-computing-trends-coming-in-2025-for-developers) - [The Fastest-Growing Tech Sectors to Look Out for in 2025](https://www.wearedevelopers.com/magazine/373-the-fastest-growing-tech-sectors-to-look-out-for-in-2025) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)