Senior Application Security Engineer, Architect, Owner.
After Dark Systems, Llc
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Ryan Coleman Email & Phone Number
Senior Application Security Engineer, Architect, Owner.
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After Dark Systems, LLC
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✓ Verified August 2026
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Current company
Role
Senior Application Security Engineer, Architect, Owner.
Location
New York City Metropolitan Area, United States
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Ryan Coleman is listed as Senior Application Security Engineer, Architect, Owner. at After Dark Systems, LLC, based in New York City Metropolitan Area, United States. AeroLeads shows a matched LinkedIn profile for Ryan Coleman.
Ryan Coleman previously worked as DNS Security Engineer at Teksystems and Security Engineer at Teksystems. Ryan Coleman holds Computer Systems Networking And Telecommunications from Tech Skills.
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After Dark Systems, LLC
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Profile bio
About Ryan Coleman
I am a Vice President and NA Team Lead of Public Cloud Transformation Services at Morgan Stanley, where I lead a team of 8 Kubernetes engineers who manage infrastructure as code (IaC) for cloud deployments in a multi-cloud environment. With over 16 years of experience in the financial industry, I have a proven track record of delivering secure, reliable, and scalable solutions that enable business growth and innovation.My expertise spans security, messaging, DNS, Linux/Unix, and cloud technologies. I have successfully completed large-scale infrastructure migrations, integrations, and roll-outs for over 70k users and services spanning global data centers. I have also been the lead integration engineer for all acquisitions and divestitures supporting email, SSL, PGP, and DNS. I am certified in Inclusive Leadership, How to Handle Poor Performers, and Learning Kubernetes. I am passionate about leveraging cloud technologies to optimize performance, reduce costs, and enhance security.
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8 roles
Ryan Coleman work experience
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Dns Security Engineer
Security Engineer
Planning and overseeing the DNS migration strategy to Azure (cloud) and assist with RHEL 7 decomissioning.
Security Engineer
NA Team lead for Kubernetes team, we manage IaC for cloud deployments in a multi-cloud environment.Our primary focus is cluster builds and automation of services such as SSL within k8s. I have experience with Terraform, Ansible, Jenkins, Docker, Azure/AWS and we are planning to on-board another CSP.We also manage Cloud Services DNS in the DMZ, migrations, and new infrastructure. This is a growing team and field for which I am honored to be a member of.
Mar 2022 - Jun 2024
Sr. Security / Messaging Engineer
Subject Matter Expert for DNS,E-mail,SSL infrastructure design, tooling, and management.Support engineer for Qubes, Xen, and ESX virtual systems in IT Security including all GuestVM'sSupport Engineer for authentication infrastructure technologies such as Kerberos (Heimdal + MIT) or key-based authentication.Configuration management and automation with cfengine, ansible, and custom scripts - infrastructure as code Cloud-based entitlements management for AWS / Google Cloud using Kerberos, ssh keys, and EoD (Exceed onDemand)Lead E-mail engineer designing,implementing and supporting Cisco Iron Port Exploring Virtual Machine automation in Google Cloud
Mar 2016 - Mar 2021
Security Engineer - L3
Lead support engineer for Perimeter E-mail and DNS Infrastructure supporting over 70k users.Level 3 Security operations support engineer for Firewall and Unix/Linux plant consisting of over 1,000 devices.
Sep 2009 - Mar 2016
Sr. Security Engineer
Level 2 - Security Engineer managing a large environment of Juniper Netscreen, Cisco PIX, and Solaris/Linux systems for Morgan Stanley.The environment is large and I was responsible for Postfix e-mail systems (as an S.M.E. which includes a specialization in Anti-Spam technologies) Two-Factor Authentication Systems (SecurID/ACE), RADIUS (Lucent/Alcatel/Navis), Kerberos, PGP, and PKI/Certificate related services on Unix-like (Linux,Sun) platforms (OpenSSL/GNUTLS).
Jun 2006 - Sep 2009
Security Engineer
Consultant to Dimension Data and member of the Security Operations Center, during my time here before being converted to a DiData employee, I was responsible for:- Cisco PIX ACL Implementation- Solaris 2/5/7/8 systems management- RHEL 3/4 systems management- IPFilter and Gauntlet Firewall ACL Implementation- Aventail SOCKS Proxy Management (client and server socks).- Real Audio Proxy and Bastion hosts management.- Postfix Access Control List implementation and message re-routing.
Dec 2005 - Jun 2006
3 education records
Ryan Coleman education
Computer Systems Networking And Telecommunications
Tech Skills
Network Management
Network Management, Routing And Switching, Security
FAQ
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What company does Ryan Coleman work for?
Ryan Coleman works for After Dark Systems, LLC.
What is Ryan Coleman's role at After Dark Systems, LLC?
Ryan Coleman is listed as Senior Application Security Engineer, Architect, Owner. at After Dark Systems, LLC.
Where is Ryan Coleman based?
Ryan Coleman is based in New York City Metropolitan Area, United States while working with After Dark Systems, LLC.
What companies has Ryan Coleman worked for?
Ryan Coleman has worked for After Dark Systems, Llc, Teksystems, Morgan Stanley, Two Sigma, and Dimension Data.
How can I contact Ryan Coleman?
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What schools did Ryan Coleman attend?
Ryan Coleman holds Computer Systems Networking And Telecommunications from Tech Skills.
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