Senior Software Developer; Cybersecurity​/Penetration Testing​/SIEM

We are seeking a Senior Software Developer with strong cybersecurity engineering experience to support enterprise security modernization initiatives. This role focuses on building secure APIs, developing automation frameworks, integrating penetration testing tools, and engineering SIEM data pipelines to enhance continuous monitoring and threat detection capabilities.

The ideal candidate brings deep hands-on experience with security automation, Kali Linux-based testing environments, scripting (Python preferred), and enterprise SIEM integrations. This is a highly technical role suited for engineers who operate at the intersection of software development and cybersecurity operations.

This position is 100% onsite in Austin, TX and requires local candidates.

Job Responsibilities

• Design and develop secure APIs, microservices, and automation tools
• Build integrations between penetration testing platforms and enterprise SIEM systems
• Develop security data ingestion, parsing, and normalization pipelines
• Automate penetration testing workflows, reporting, and evidence collection
• Engineer and maintain Kali Linux-based testing environments
• Develop custom scripts and tooling to support red team and application security efforts
• Implement CI/CD pipelines for security tooling and integrations
• Integrate security findings into monitoring and compliance platforms
• Collaborate with security operations and engineering teams to enhance detection capabilities
• Produce technical documentation, runbooks, and architecture diagrams

- 8+ years of experience in software development with a strong focus on cybersecurity engineering

- 8+ years of hands-on experience with penetration testing tools and Kali Linux environments

- Strong proficiency in at least one programming language (Python preferred; Java, JavaScript, or C# acceptable)

- Experience developing secure REST APIs and enterprise system integrations

- Hands-on scripting experience (Python, Bash, Power Shell)

- Experience integrating security tools with SIEM platforms (Splunk, Sentinel, or similar)

- Experience building security automation frameworks and data ingestion pipelines

- Linux system administration experience

- Strong understanding of secure coding practices and cybersecurity fundamentals

- Bachelor's degree in Computer Science, Information Technology, or related field (or equivalent experience)

Equal Opportunity

Employer:

Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.

At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact

Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility).

This posting is open for thirty (30) days.