Capital.com

application security engineer in financial services

In short

Senior application/product security engineer role at Capital.com's Product Security team in Warsaw, focused on securing web and mobile applications, infrastructure and the external perimeter in a regulated fintech environment. The role covers leading security architecture reviews, threat modelling, automating SDLC/CI-CD security checks (SAST/DAST/SCA), managing bug bounty triage, and applying AI/LLM tooling to security work. Requires 5+ years of application/product security experience with senior-level impact, strong hands-on testing and coding skills, and deep OWASP/secure design knowledge. Hybrid format: 3 days office, 2 days remote.

О команде
Capital.com's Product Security team protects web and mobile applications, infrastructure, and the external perimeter in a highly regulated environment. It designs and scales security processes that help engineering teams build securely by default.
Задачи
•Lead security architecture reviews and threat modelling for new and existing systems, using AI tools to make reviews faster, more consistent, and scalable across teams
•Influence standards, patterns, and guardrails that help teams move quickly while staying secure
•Design, build, and automate scalable, self-service security processes for secure design review, threat modelling, testing, and remediation workflows
•Integrate and automate security checks across SDLC and CI/CD pipelines, including SAST, DAST, SCA, secrets, and IaC scanning
•Own and evolve security tooling, including DefectDojo and SAST, DAST, and SCA platforms
•Apply AI and LLM-based tooling to architecture review, threat modelling, code review, and vulnerability triage, and help define its safe adoption
•Conduct and oversee security assessments of web and mobile applications, APIs, and cloud infrastructure, including manual testing and PoC development
•Run vulnerability scans across internal infrastructure and the external perimeter, analyse findings, define remediation, and track issues to closure
•Support and triage the Bug Bounty Program and external vulnerability reports, automating triage where possible
•Participate in and help lead red teaming and offensive security exercises
•Drive knowledge sharing on secure development, mentor engineers, and deliver training for development and QA teams
Требования
•5+ years in application or product security, or equivalent depth, with a track record of senior- or staff-level impact
•Experience leading security architecture reviews and threat modelling across multiple teams or products
•Ability to automate and scale security processes by building tooling, integrations, and self-service workflows
•Strong hands-on security testing skills, including code review and web, mobile, and API application security assessments
•Ability to triage and validate external vulnerability reports and bug bounty submissions
•Strong software engineering ability in at least one language, such as Python, Go, or JavaScript
•Deep understanding of the OWASP Top Ten, secure design, and secure coding best practices
•Experience with SAST, DAST, SCA, vulnerability management platforms, and CI/CD integrations
•Strong understanding of REST APIs, microservices, cloud-based systems, and containers
•Practical experience applying AI and LLM tooling to security work, or clear enthusiasm and aptitude to do so
•Excellent communication and influencing skills; able to explain security concepts to technical and non-technical stakeholders and drive change without direct authority
•Self-starter who enjoys solving complex problems, building leverage through automation, mentoring others, and strengthening security culture
Будет плюсом
•Securing LLM and agent pipelines, prompts, tool and MCP integrations, and model endpoints
•Securing Kubernetes and AWS infrastructure
•Building AI-assisted security tooling or internal self-service security platforms
•Mentoring or technically leading a security team
•OSAI, OSEP, OSCP, or OSWE certifications
Условия
•Annual bonus based on the performance review cycle
•Generous annual leave policy
•Medical insurance and pension fund, with additional benefit packages based on location
•Hybrid working model with 3 days from the office and 2 days fully remotely
•Comprehensive Workation Policy with 30 more remote days available
•Possibility of taking two additional days of paid leave per year for volunteering

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