PKI Engineer - C# Expert

Citi; New York (NY); Hybride; USD 15 000 - 21 000; Plein temps

Résumé du poste

Citi is seeking a PKI Engineer - C# Expert to develop cryptography and PKI systems, and to automate certificate management across Citi infrastructure. The role emphasizes C#.NET and Python development, with strong emphasis on cryptographic standards and governance.

You will work with middleware integrations, hardware and software platforms, and contribute to enterprise security solutions while adhering to Citi policies and regulatory requirements.

Qualifications

• Understanding of Windows operating systems
• Understanding of Linux
• Understanding cryptographic protocols
• Proficient in C# development
• Proficient in Python
• Knowledge of crypto libraries such as Bouncy Castle
• Solid security engineering fundamentals and secure development practices
• Experience with symmetric and asymmetric encryption

Responsabilités

• Develop enterprise-level cryptographic and PKI solutions with focus on automation
• Integrate PKI and certificate management with Citi platforms
• Evaluate and certify PKI and crypto technologies to meet Citi requirements
• Provide 4th level support for product tools
• Produce documentation for tool usage and processes
• Follow the Technology Development Life Cycle for security tools

Connaissances

Windows OS

Linux

Cryptographic protocols

C#

Python

Crypto Libraries

Security engineering

Symmetric Encryption

Asymmetric Encryption

Formation

Bachelor's degree

Master's degree preferred

Outils

Bouncy Castle

Description du poste

PKI Engineer - C# Expert

Job Req Id:

26997340

Location(s):

Chennai, Tamil Nadu, India

Job Type:

Hybrid

Posted:

Oct. 09, 2026

Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of approximately 219,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview

The purpose of this job is to develop and engineer Cryptography and PKI Systems, support middleware integrations using C#.net alongside existing team members fulfilling corporate requirements, policies and standards. Take part in defining cryptographic standards, architectures, and governance, develop large scale enterprise security solutions using advancements in cryptography and information security, work with advanced algorithms.

Cryptographic engineering developer with hands on experience in C#.net. The engineer will work on emerging technology and exciting area of next generation security ecosystem.

The job will also involve working with advanced mathematical algorithms and is generally known to provide good job satisfaction for the right candidate meeting our Citi and team culture fitness requirements.

The engineer will focus on certificate automation projects in Citi, including certificate automation for microservices, desktops, servers, Windows, Unix hosts, firewalls, appliances and other citi infrastructure and platforms.

Responsibilities:

• The candidate's primary responsibility will be to develop solutions at the enterprise level, which will include working on cryptographic architectures with main focus on automation in the PKI & cryptography engineering space.
• The candidate must have a basic understanding of cryptographic concepts and its pillars. Knowledge of principles related to PKI, private keys, encryption methods, CRL, and advanced key usages is good to have.
• They must be familiar with information security concepts and products.
• They must have strong development background in C# and Python.
• A sound knowledge of secure development technologies, object oriented programming and shift left is required.
• Work with all disciplines, engineers, and operational product owners to integrate PKI and certificate management related technologies with Citi platforms to protect and manage the cryptography of mission critical systems.
• Perform product evaluation, testing and certification of PKI and Crypto technologies. Ensure that all security products meet or exceed Citi internal and regulatory requirements.
• Provide occasional 4th level support for the product toolset.
• Produce documentation of processes and procedures for the usage of the product.
• Follow the Technology Development Life Cycle in the development of all security tools.

Qualifications:

• Understanding of Microsoft Windows operating systems
• Understanding of Linux
• Understanding of cryptographic protocols
• Programming Experience in or C#
• Programming in Python
• Knowledge of Crypto Libraries (Bouncy Castle)
• Sound security engineering principles as background to understanding the inner workings of the systems and controls that form an enterprise security ecosystem
• Symmetric Key Encryption
• Asymmetric Encryption

Education:

• Bachelor's degree/University degree or equivalent experience
• Master's degree preferred

Job Family Group:

Technology

Job Family:

Systems & Engineering

Time Type:

Full time

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

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