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Senior Python Developer

Madrid, Spain

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Be a part of our elite cybersecurity team that provides strategy,
consulting, and threat detection to a wide range of customers.

"If you want to be continually challenged, always learning and able to shift careers, AT&T is the right place for you! I started at AT&T 18 years ago and never envisioned having an opportunity to transition into a Cybersecurity role."

Connie Bragg — Professional Cybersecurity


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We are looking for a knowledgeable Python Developer to help the AT&T Alien Labs security team design the next generation of threat protection and security software and research new malware threats as they appear.
As a Python Developer, you are part of a small and innovative team that discovers and disseminates cyber threat intelligence. It is important that you are a team player with a solid knowledge of the existing security landscape and a driving passion for finding new threats.


  • Keep current and knowledge on APT’s and new malware
  • Design new methods of detecting malware and TTPs
  • Review new threats and design new methods for discovering them in the wild
  • Use current tools and write new tools to extract indicators from malware
  • Design and implement new innovative products that enhance the existing tool suite and product family
  • Stay current on the latest tools for security and malware research


  • 4+ years of Python experience. 
  • 7+ years software development. 
  • 2+ years cloud infrastructure experience (preferably AWS but also Azure, OpenStack, etc.) and containerized environments (Docker). 
  • Hands-on experience with distributed systems and building / consuming REST APIs. 
  • Experience with SQL and NoSQL database systems. 
  • Strong data analysis skills leveraging various technologies. 
  • Self-starter, with a strong work ethic and ability to excel as part of a geographically diverse team. 
  • Comfortable with Agile development practices, unit tests, and code reviews. 
  • Fluency in English. 
  • Excellent verbal and written communication skills. 

PREFERRED (Pluses): 

  • Full stack development experience. 
  • Experience with Big Data Technologies. 
  • Experience in building single page applications. 
  • Strong background in solving concurrency and horizontal scalability problems.  
  • Experience with high throughput, scalable, systems. 
  • Knowledge of enterprise security/threat intelligence/threat detection. 
  • Network security. 
  • Application security. 
  • Continuous Integration for Agile Development. 
  • MongoDB, ElasticSearch, Postgres, AWS, Azure, Linux, Docker 

Job ID 2250978I Date posted 12/01/2022
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Invested in your satisfaction and continued success.

We take care of our own here (hint: that could be you). Our benefits and rewards mean we cover some of your biggest needs with some of the coolest offerings. We already think we’re a pretty great place to work. We’re just trying to rack up some bonus points.

Let’s start with the big one: Your work gets rewarded with competitive compensation and benefits. It really does pay to be on our team.


When it comes to priorities, we know family tops the list. For the moments that matter the most, you'll be there for them, and we'll be here for you.

Family Leave

Paid Time Off

Our people have class. Literally. We can help you out on approved education costs with our tuition assistance plan.


Here’s another reason to breathe easy: You and your family get access to excellent medical, dental and vision insurance options.

Insurance Options

Wanna make your friends really jealous? You’ll get discounted access to the latest and greatest AT&T products and services — plus other awesome items, like tickets to live events.


You strike us as an over-achiever (don’t worry, it’s a compliment). Our training and development programs are your ticket to expert status in your job.

Training & Development

When the day comes that you get some much needed R&R (not that you’d ever want to leave #LifeAtATT) you’ll know your future is set with the AT&T Retirement Savings Plan (ARSP).


Give back to your community and connect with colleagues through social and team-building events, and annual paid time off for volunteer efforts of your choice.

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The Hiring Process

Step 1

Complete a quick application online and check your status often.

Step 2

Virtual or in-person

Dress professionally and ensure good WiFi interviewing virtually.

Step 3

Job Offer

After a background check, you're part of the team.

Step 4

Welcome! Onboarding
and Training Begins

Our training and certification programs set you up for success.

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