Senior Application Security Engineer

Date: 19 Dec 2025

Location: Sofia, 23, BG

Company: Paysafe

 

 

Paysafe is a leading payments platform with an extensive track record of serving merchants and consumers in the global entertainment sectors. Its core purpose is to enable businesses and consumers to connect and transact seamlessly through industry-leading capabilities in payment processing, digital wallet, and online cash solutions. With 29 years of online payment experience, an annualized transactional volume of $152 billion in 2024, and approximately 3,000 employees located in 12+ countries, Paysafe connects businesses and consumers across 260 payment types in 48 currencies around the world. Delivered through an integrated platform, Paysafe solutions are geared toward mobile-initiated transactions, real-time analytics and the convergence between brick-and-mortar and online payments. Further information is available at www.paysafe.com. 

 

What to expect:

  • Configure and optimize CI/CD pipelines to automate security scans (SAST, SCA, DAST, container/API scanning), enforce code quality gates, and enable early identification of vulnerabilities during the development lifecycle
  • Process bug bounty findings: validate/reproduce, assess impact, coordinate remediation with teams, and close the loop with researchers
  • Organize and coordinate security testing (external pen tests, targeted assessments); define scope, consolidate results, and verify remediation
  • Design and maintain automations (Python/Bash, APIs) that streamline daily AppSec tasks, automate recurring processes and optimize workflows to reduce manual work and cycle time
  • Define, track, and report AppSec metrics (coverage, findings, remediation SLAs) to provide executive level visibility and program effectiveness
  • Develop and maintain technical documentation such as Standard Operating Procedures (SOPs) as necessary

 

To be successful you need to have:

  • 5+ years of experience in application security, software development, or technical InfoSec roles
  • Hands-on experience with CI/CD tools for building automated pipelines
  • Hands on expertise with SAST, SCA, DAST and CI/CD pipeline integration for automated checks and enforcement
  • Solid knowledge of OWASP Top 10, plus web application security testing (manual and automated)
  • Automation scripting proficiency (Python, Bash or other languages) to build custom workflows for detection, reporting, and remediation
  • Linux command line proficiency and systems knowledge

 

Considered an advantage:

  • Bachelor’s degree in Information Security, Computer Science, or a related technical field is a plus
  • Relevant certifications such as OSCP, OSWA, OSWE, GWAPT or similar are a plus

 

We offer in return:

  • The opportunity to write the history of a leading and growing multinational company
  • Tailor-made training and ongoing development to help you enhance your skills in the field of online payments
  • Multiple career progression opportunities in a dynamic in-house business
  • Environment where product expertise, professional and personal commitment are rewarded
  • Competitive remuneration and social benefits package (25 days annual paid leave, 4 days paid volunteering time a year through our Paysafe Giving initiative, health insurance, sports card, team events, company discounts, variety of soft skills, business and technical training programs)
  • Fun and collaborative working atmosphere
  • Flexible working model - we encourage our employees to embrace our flexible working approach. You will be expected to work from home and spend an average of three days a week at our Sofia office as part of our hybrid work model

 

Are you ready to take your career to the next level? Join our team that is inspired by a unified vision and propelled by passion.

 

Send your CV in English.

Only shortlisted candidates will be contacted for an interview.

 

Wondering how our interview process looks like now? Learn more here: https://bit.ly/paysafeinterviews

 

Equal Employment Opportunity

Paysafe provides equal employment opportunities to all employees, and applicants for employment, and prohibits discrimination of any type with regard to ethnicity, religion, age, sex, national origin, disability status, sexual orientation, gender identity or expression, or any other protected characteristics. This policy applies to all terms and conditions of recruitment and employment.  If you need any reasonable adjustments please let us know.  We will be happy to help and look forward to hearing from you.