Lead Cloud Security Engineer

Are you ready to build the future of our company?

About Mercury® Financial

Mercury® Financial is an innovative and growing financial services company with locations in both Austin, TX and Wilmington, DE. Our mission is to help customers build and maintain their financial future by offering them credit cards they can afford and understand. After only a few years, we’ve had great success building a significant credit card program, but we are aiming higher, which means we have lots of challenging problems for you to help us solve. Come onboard, work with some of the most talented individuals who thrive on collaboration and teamwork; and help us continue to build something special.

Location

Mercury® Financial is headquartered in the progressive and entrepreneurial tech hub of Austin, Texas. Our physical location is situated in a beautiful park like setting called the Domain. The Domain's ideal location and exceptional amenities, amazing restaurant selection and convenient parking, are all perfect for after work happy hours!

Or, 

Mercury® Financials' Wilmington, Delaware office is located near the Riverfront. Wilmington is Delaware’s largest city and is the economic engine of the state. The Riverfront combines its rich history with a host of attractions that bring great food, entertainment, and shopping to our city. Based on its convenient location, direct access to I-95, Amtrak and SEPTA, this location allows our employees the flexibility to live in a variety of the surrounding areas.

What it’s like to work here: 

We foster a collaborative and innovative culture where you will be empowered to do your best work. All of our employees bring everything they have to their job and are part of a larger team working towards a greater goal. We do right by our employees, our partners, and our customers.

Role: 

We are seeking a skilled Cloud Network Security Engineer to join our growing infrastructure and security team. This role will focus on designing, implementing, and managing secure hybrid cloud network architectures with a heavy emphasis on AWS Transit Gateways, BGP routing, hybrid networking, and cloud security automation. The ideal candidate will bring a deep understanding of cloud networking, system administration (Linux and Windows), Active Directory integrations, and security best practices across cloud and on-prem environments.

What a day is like:

• Design, implement, and manage secure cloud network infrastructures in AWS, including Transit Gateways, VPC peering, and hybrid network architectures.
• Configure and troubleshoot BGP routing between AWS and on-premises data centers or co-location environments.
• Work closely with security and DevOps teams to implement security controls, guardrails, and automated enforcement across cloud networks.
• Develop and maintain infrastructure-as-code (IaC) and automation scripts (e.g., Terraform, CloudFormation, Python, Bash) to enforce network and security standards.
• Manage and monitor Linux and Windows servers, ensuring integration with Active Directory and centralized authentication systems.
• Collaborate on the design and enforcement of zero-trust network architectures, least privilege principles, and segmentation strategies.
• Support cloud security posture management (CSPM) and participate in incident response and vulnerability remediation related to network infrastructure.
• Contribute to disaster recovery planning, cross-region failover strategies, and business continuity for networked systems.
• Stay current on evolving cloud networking technologies, security threats, and industry best practices.

You’re perfect for this role if you have: 

• 7+ years of hands-on experience in cloud and hybrid network engineering roles.
• Strong experience with AWS networking services, including Transit Gateway, VPC, Direct Connect, VPN, and Route 53.
• In-depth knowledge of BGP, routing protocols, and WAN connectivity concepts.
• Experience working with Linux and Windows Server environments, including Active Directory and Group Policy.
• Hands-on experience with network security concepts such as firewalls, NAC, ACLs, IDS/IPS, and secure tunneling (IPSec, TLS).
• Proficiency in automation and scripting (e.g., Python, Bash, Terraform, CloudFormation).
• Familiarity with cloud security tools and practices including CSPM, IAM, and network monitoring solutions.
• Excellent problem-solving, communication, and documentation skills.

Preferred Qualifications:

• AWS certifications (e.g., AWS Certified Advanced Networking, Security).
• Experience with hybrid Active Directory environments, Azure AD, and federated authentication.
• Familiarity with container networking (e.g., ECS, EKS), service meshes, and microsegmentation.
• Exposure to security compliance frameworks such as PCI DSS, CIS Benchmarks, NIST, ISO 27001, or FedRAMP.
• Experience with monitoring and SIEM platforms (e.g., Splunk, AWS CloudWatch).

Why you’ll like working here:

This isn’t a place where you will fill a seat and keep your head down. This is a place where everybody is expected to help build something. This is a place where you can be involved and lead in your areas of expertise. So, how much do you believe in yourself? If you believe in your skills, in your drive and determination, we’ll give you the resources and room to show the world what you can do. Here are just a few of the benefits we offer:

• Employer insurance coverage for employee & dependents 
• Life insurance 
• 401K with generous employer match 
• Wellness program
• Monthly Company Events  
• Hybrid Work Model 

Mercury® Financial is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, sex, sexual orientation, gender identity, age, status as a protected veteran, among other things, or status as a qualified individual with disability.