Lead Software Engineer, Back End (Java/ Python/ Go Backend, REST/ GraphQL APIs, WAF, HTTP Protocol, AWS) at Capital One — McLean, USA | Base Career

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Do you love building and pioneering at the intersection of security and cloud infrastructure?

Do you enjoy solving complex problems in a fast-paced, collaborative, and iterative environment?

At Capital One, you'll be part of a team of makers, breakers, doers, and disruptors who protect millions of customers at the edge of our network every day.

We are seeking Back End Software Engineers who are passionate about edge security, automation, and leveraging emerging technologies — including AI — to stay ahead of evolving threats.

What You'Ll Do

Design, build, and operate edge network security infrastructure including WAF rule sets, bot protection services, and traffic inspection pipelines that defend Capital One's applications at scale

Develop and maintain Python-based automation and tooling that manages WAF policies & infrastructure, bot mitigation configurations, and security event workflows across AWS environments

Build and maintain serverless architectures using AWS Lambda, Application Load Balancers, DynamoDB, and related AWS services to power real-time threat detection and response

Use AI coding assistants and AI-driven analysis tools to accelerate development, identify patterns in security telemetry, and build smarter, faster protection capabilities

Collaborate with security, product, and platform teams to translate threat intelligence and compliance requirements into deployable infrastructure-as-code

Participate in on-call rotations and incident response for edge security events, using automation and AI tooling to reduce toil and mean time to resolution

Stay current with the WAF, bot protection, and cloud security landscape — experimenting with new capabilities, contributing to internal security communities, and sharing knowledge across engineering teams

Bachelor’s Degree

At least 4 years of professional software engineering experience (Internship experience does not apply)

7+ years of experience in at least one of the following: Java, Scala, Python, Go, or Node.js

2+ years of experience with AWS, GCP, Azure, or another cloud service

4+ years of experience in open source frameworks

1+ years of people management experience

2+ years of experience in Agile practices

Experience leveraging interactive AI tooling to accelerate productivity, utilizing capabilities beyond basic code completion

At this time, Capital One will not sponsor a new applicant for employment authorization, or offer any immigration related support for this position (i.e.

H1B, F-1 OPT, F-1 STEM OPT, F-1 CPT, J-1, TN, E-2, E-3, L-1 and O-1, or any EADs or other forms of work authorization that require immigration support from an employer).

The minimum and maximum full-time annual salaries for this role are listed below, by location.

Please note that this salary information is solely for candidates hired to perform work within one of these locations, and refers to the amount Capital One is willing to pay at the time of this posting.

Salaries for part-time roles will be prorated based upon the agreed upon number of hours to be regularly worked.

Candidates hired to work in other locations will be subject to the pay range associated with that location, and the actual annualized salary amount offered to any candidate at the time of hire will be reflected solely in the candidate’s offer letter.

Capital One offers a comprehensive, competitive, and inclusive set of health, financial and other benefits that support your total well-being.

Learn more at the Capital One Careers website.

Eligibility varies based on full or part-time status, exempt or non-exempt status, and management level.

If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation, please contact Capital One Recruiting at 1-800-304-9102 or via email at RecruitingAccommodation@capitalone.com.

All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodations.

For technical support or questions about Capital One's recruiting process, please send an email to Careers@capitalone.com

Capital One does not provide, endorse nor guarantee and is not liable for third-party products, services, educational tools or other information available through this site.

Capital One Financial is made up of several different entities.

Please note that any position posted in Canada is for Capital One Canada, any position posted in the United Kingdom is for Capital One Europe and any position posted in the Philippines is for Capital One Philippines Service Corp. (COPSSC).

Lead Software Engineer, Back End (Java/ Python/ Go Backend, REST/ GraphQL APIs, WAF, HTTP Protocol, AWS)

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Key Skills for This Role

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What You'Ll Do

Bachelor’s Degree

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