Senior Software Engineer (Python) - Security, Detection Lifecycle

Description

Splunk, a Cisco company, is building a safer and more resilient digital world with an end-to-end full stack platform made for a hybrid, multi-cloud world. Leading enterprises use our unified security and observability platform to keep their digital systems secure and reliable. Our customers love our technology, but it's our caring employees that make Splunk stand out as an amazing career destination. No matter where in the world or what level of the organization, we approach our work with kindness. So bring your work experience, problem-solving skills and talent, of course, but also bring your joy, your passion and all the things that make you, you. Come help organizations be their best, while you reach new heights with a team that has your back.
Role Summary

Are you driven to build high-scale, high-performance systems that help defenders outpace attackers and redefine the next generation of SIEM? Join our fast-moving team as we modernize the threat detection experience in Splunk Enterprise Security. We're on a mission to reinvent how security teams create, test, and operationalize detections with unprecedented speed and precision.

As a backend engineer, you'll build core APIs and services in Python that power detection lifecycle capabilities that bring structure and clarity to one of the most critical workflows in modern cybersecurity. You'll collaborate closely with engineers, product managers, and security experts in an environment that values initiative, creativity, and pragmatic problem-solving. Expect deep technical challenges, high ownership, and a direct impact on the tools that security teams rely on every day. If you're energized by turning bold ideas into elegant, performant code-and want to help shape the future of threat detection-this is your kind of challenge!

This position is remote eligible within the United States.
Meet the Team

We're a scrappy, agile team with a startup feel and a strong bias for action. We move quickly, learn from our mistakes, and stay obsessed with solving real-world problems for defenders on the front lines. At the same time, we believe in sustainable high performance. That means focused, meaningful work-without the burnout. We keep reasonable hours, encourage time off, and stay flexible for life's curveballs. While some weeks run hot, they're balanced with time to recharge. We measure success by impact, not hours logged.
What you'll get to do

• Design and implement backend services and RESTful APIs to support critical features
• Write clean, maintainable, and testable code that meets our internal standards and delivers real customer value
• Architect scalable, reliable backend microservices that perform across both cloud and on-prem environments
• Participate in peer code reviews to uphold best practices, share knowledge, and maintain code quality across the team

Must-have Qualifications

• Proven experience (5+ years) developing backend systems and large-scale applications using Python, including modern language features and best practices
• Hands-on experience building and maintaining RESTful APIs using FastAPI or similar frameworks (e.g., Flask, Django)
• Strong understanding of SQL and working with relational databases such as PostgreSQL, MySQL, or similar
• Experience developing unit and integration tests using Python testing frameworks (e.g., Pytest, unittest)
• Familiarity with version control using Git and collaboration in a team-based engineering environment
• Experience using CI/CD and project management tools (e.g., Gitlab, Github, CI/CD pipelines, Jira, Confluence etc.) in an Agile development team.
• Strong debugging and problem-solving skills, with a track record of resolving complex issues in distributed systems
• Highly adaptable, self-motivated, and effective at managing concurrent responsibilities

Nice-to-have Qualifications

We've taken special care to separate the must-have qualifications from the nice-to-haves. "Nice-to-have" means just that: Nice. To. Have. So, don't worry if you can't check off every box. We're not hiring a list of bullet points-we're interested in the whole you.

• Experience with Splunk, particularly Enterprise Security or Splunk's developer ecosystem
• Background in cybersecurity, threat detection, or building security-focused applications
• Proficiency with performance profiling, optimization techniques, and scalability patterns in Python applications
• Familiarity with cloud platforms like AWS, Google Cloud Platform, or Azure (infrastructure, deployment, observability)
• Solid understanding of hybrid or multi-environment (cloud + on-prem) deployment designs
• Exposure to containerization and orchestration technologies (e.g., Docker, Kubernetes)

Splunk is an Equal Opportunity Employer

Splunk, a Cisco company, is an Equal Opportunity Employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, gender, sexual orientation, national origin, genetic information, age, disability, veteran status, or any other legally protected basis.

When available, the salary range posted for this position reflects the projected hiring range for new hire, full-time salaries in U.S. and/or Canada locations, not including equity or benefits. For non-sales roles the hiring ranges reflect base salary only; employees are also eligible to receive annual bonuses. Hiring ranges for sales positions include base and incentive compensation target. Individual pay is determined by the candidate's hiring location and additional factors, including but not limited to skillset, experience, and relevant education, certifications, or training. Applicants may not be eligible for the full salary range based on their U.S. or Canada hiring location. The recruiter can share more details about compensation for the role in your location during the hiring process.
U.S. employees have access to quality medical, dental and vision insurance, a 401(k) plan with a Cisco matching contribution, short and long-term disability coverage, basic life insurance and numerous wellbeing offerings.

Employees receive up to twelve paid holidays per calendar year, which includes one floating holiday (for non-exempt employees), plus a day off for their birthday. Non-Exempt new hires accrue up to 16 days of vacation time off each year, at a rate of 4.92 hours per pay period. Exempt new hires participate in Cisco's flexible Vacation Time Off policy, which does not place a defined limit on how much vacation time eligible employees may use but is subject to availability and some business limitations. All new hires are eligible for Sick Time Off subject to Cisco's Sick Time Off Policy and will have eighty (80) hours of sick time off provided on their hire date and on January 1st of each year thereafter. Up to 80 hours of unused sick time will be carried forward from one calendar year to the next such that the maximum number of sick time hours an employee may have available is 160 hours. Employees in Illinois have a unique time off program designed specifically with local requirements in mind. All employees also have access to paid time away to deal with critical or emergency issues. We offer additional paid time to volunteer and give back to the community.
Employees on sales plans earn performance-based incentive pay on top of their base salary, which is split between quota and non-quota components. For quota-based incentive pay, Cisco typically pays as follows:
.75% of incentive target for each 1% of revenue attainment up to 50% of quota;
1.5% of incentive target for each 1% of attainment between 50% and 75%;
1% of incentive target for each 1% of attainment between 75% and 100%; and once performance exceeds 100% attainment, incentive rates are at or above 1% for each 1% of attainment with no cap on incentive compensation.
For non-quota-based sales performance elements such as strategic sales objectives, Cisco may pay up to 125% of target. Cisco sales plans do not have a minimum threshold of performance for sales incentive compensation to be paid.

Thank you for your interest in Splunk!