Quantum Security Engineer

Company Description VantrixTech is a cybersecurity technology company focused on helping organizations address next-generation digital security challenges. The team specializes in Quantum Readiness, AI Security, and cyber risk innovation, enabling enterprises to build resilience against emerging threats and prepare for future technologies. VantrixTech delivers intelligent solutions that provide visibility, governance, and actionable insights across evolving security landscapes. By blending deep technical expertise with practical business outcomes, the company supports informed decision-making and secure technology adoption. VantrixTech is driven by the belief that cybersecurity is about protecting today while preparing organizations for the future.

Role Description The Quantum Security Engineer is a full-time, on-site role based in Pune. Quantum Security Engineer protects the organisation against the risks that quantum computing poses to today's cryptography, and secures emerging quantum technologies where they are adopted. The role leads the migration to post-quantum cryptography (PQC), builds crypto-agility into systems, and advises teams on quantum-era threats such as harvest now, decrypt later attacks. The engineer works across security, infrastructure, product and compliance teams to turn standards and research into practical, deployable controls.

Key Responsibilities

Post Quantum Migration

• Build and maintain a cryptographic inventory (CBOM) covering algorithms, key sizes, protocols, certificates and libraries across applications, infrastructure and third parties.
• Assess quantum risk by data sensitivity and required confidentiality lifetime, and prioritise systems for migration.
• Design and deliver migration roadmaps to NIST-standardised algorithms (ML-KEM, ML-DSA, SLH-DSA) and hybrid classical/PQC schemes.
• Integrate PQC into TLS, VPN, SSH, PKI, code signing, key management, HSMs and secure messaging.

Crypto-Agility and Architecture

• Define reference architectures and coding standards that allow algorithms to be swapped without major re-engineering.
• Review designs and code for cryptographic misuse, weak randomness, side-channel exposure and insecure key handling.
• Evaluate performance, latency, bandwidth and certificate-size impacts of PQC on production workloads.

Quantum Technology Standards

• Assess and secure quantum key distribution (QKD), quantum random number generators and quantum cloud services where used.
• Advise on risks in hybrid quantum-classical workflows, including access control, data protection and supply chain concerns.

Governance, Risk and Compliance

• Track standards and regulation (NIST, ETSI, IETF, NCSC, ENISA, CISA, and sector regulators) and translate them into policy and controls.
• Support audit, regulatory reporting and board-level briefings on quantum readiness.
• Evaluate vendor and supplier PQC readiness and contractual requirements.

Research, Enablement and Collaboration

• Run proofs of concept and benchmark open-source libraries (e.g. liboqs, OpenSSL providers).
• Create training, playbooks and guidance for engineers and architects.
• Represent the organisation in industry groups, standards bodies and technical communities where appropriate.

Required Qualifications

• Bachelor's degree in computer science, mathematics, physics, cybersecurity or a related field (or equivalent experience).
• 4+ years in security engineering, applied cryptography or PKI engineering.
• Strong grasp of public-key cryptography (RSA, ECC), symmetric cryptography, hashing and key management.
• Working knowledge of quantum threats: Shor's and Grover's algorithms and their effect on current cryptosystems.
• Familiarity with PQC algorithm families (lattice-, hash-, code- and multivariate-based) and NIST's standardisation process.
• Hands-on experience with TLS, PKI, HSMs and secure protocol design.
• Proficiency in at least one of Python, Go, Rust, C/C++ or Java.
• Clear written and verbal communication, including explaining technical risk to non-specialists.

VantrixTech Values

Customer Success: Delivering measurable value and building lasting relationships.

We put our customers at the center of everything we do, focusing on outcomes that reduce risk, drive innovation, and support long-term success.

Future First Innovation: Preparing organisations for the technologies of tomorrow.

We embrace emerging technologies and challenge conventional thinking to help organisations navigate the evolving worlds of AI, Quantum Computing, and cybersecurity.

Trust Through Transparency: Creating confidence through openness, honesty, and accountability.

We believe trust is earned through clear communication, ethical practices, and providing customers with the visibility they need to make informed decisions.

Stronger Together: Achieving greater outcomes through collaboration and shared purpose.

We foster teamwork, respect, and partnership, bringing together diverse perspectives to solve complex challenges and deliver exceptional results.

Why Work at VantrixTech

Build What Comes Next — Work on emerging cybersecurity challenges across AI Security, Agentic AI, Quantum Readiness and Post-Quantum Cryptography.

Solve Global Problems — Help build technology designed to address security challenges faced by enterprises around the world.

Learn at the Edge of Technology — Work across cybersecurity, AI, cryptography, cloud and other rapidly evolving technologies.

Grow With the Company — As VantrixTech grows, we want our people to grow with it—taking on greater responsibility, developing new skills and helping shape our future.

Work With Purpose — Our ambition is bigger than building another security product: to help organisations become more secure and resilient for the technologies of tomorrow.