Cyber Security Developer - Sr

Location: Southlake, TX (On-site; 1 day remote/week)
Alternate Locations: Omaha, NE or Orlando, FL
Duration: 12 months (extension possible)
Experience Level: Expert

Position Overview

We are seeking a highly skilled Software Security Engineer to join a mature and evolving Application Security team within a large enterprise cybersecurity organization. This team is responsible for protecting critical information assets and driving the adoption of secure software development practices across the business.
This role plays a key part in strengthening secure development processes, improving security controls, and reducing vulnerabilities across production systems. The ideal candidate brings a balance of deep technical security expertise and the ability to collaborate effectively with software engineering teams.

Key Responsibilities

• Support and advance the organization's Secure Software Development Program (SSDLC)
• Partner with development teams to integrate security into the software development lifecycle
• Provide security architecture guidance for new and existing applications
• Conduct and support:
  • Static Application Security Testing (SAST)
  • Software Composition Analysis (SCA)
  • Penetration testing and vulnerability assessments
• Identify, analyze, and help remediate application security vulnerabilities
• Perform threat modeling and architectural risk assessments
• Implement and scale enterprise-level application security tools and services
• Analyze large sets of security data and translate findings into actionable insights
• Promote and educate engineering teams on secure coding practices and standards
• Assist with security requirements definition and code review processes
• Evaluate and improve application security controls and processes

Required Qualifications

• Proven experience within an Application Security or Software Security Assurance team
• Strong experience in application/software engineering
• Hands-on experience with security tools such as:
  • SAST
  • SCA
  • Secrets management tools
• Experience integrating security testing tools into Agile/CI-CD environments
• Deep understanding of:
  • Common web and application vulnerabilities (e.g., OWASP Top 10)
  • Attack vectors and mitigation techniques
• Experience with:
  • Threat modeling
  • Secure code reviews
  • Security requirements analysis
  • Application architecture risk assessments
• Familiarity with industry standards and frameworks:
  • OWASP
  • NIST
  • CIS
• Minimum of 2+ years of experience with:
  • Static analysis tools and/or threat modeling tools
• Demonstrated ability to collaborate with engineering teams and balance security with development velocity
• Strong analytical skills with the ability to interpret complex data

Preferred Qualifications

• Experience implementing and scaling enterprise application security programs
• Familiarity with modern development practices (DevOps, CI/CD pipelines)
• Strong communication skills with the ability to influence stakeholders

Key Traits for Success

• Collaborative mindset with strong cross-functional partnership skills
• Analytical thinker who can turn data into practical recommendations
• Passion for improving security posture while enabling innovation
• Comfortable working in a fast-paced, enterprise environment

Job Type & Location
This is a Contract position based out of Southlake, TX.
Pay and Benefits
The pay range for this position is $72.00 - $76.00/hr.
Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:
Medical, dental & vision
Critical Illness, Accident, and Hospital
401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available
Life Insurance (Voluntary Life & AD&D for the employee and dependents)
Short and long-term disability
Health Spending Account (HSA)
Transportation benefits
Employee Assistance Program
Time Off/Leave (PTO, Vacation or Sick Leave)
Workplace Type
This is a hybrid position in Southlake,TX.
Application Deadline
This position is anticipated to close on Jun 16, 2026.

About TEKsystems

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

We're a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We're a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We're strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We're building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.