Hire Security Engineers — Protect Your Applications

Kultrix security engineers work across offensive and defensive security. On the offensive side, they conduct penetration tests and code reviews to find vulnerabilities before attackers do. On the defensive side, they implement security controls, configure monitoring, harden cloud infrastructure, and prepare documentation for compliance frameworks like SOC 2 and ISO 27001. They can embed in engineering teams to shift security left — reviewing pull requests and running threat modelling sessions.

Penetration testing engagements are scoped and scheduled — typically starting within one to two weeks to allow proper scope agreement and rules of engagement documentation. For embedded security engineering roles (code review, security architecture, SOC 2 readiness), placement is within 48 hours of contract signing.

A Kultrix web application penetration test covers the OWASP Top 10 (injection, broken auth, XSS, IDOR, security misconfiguration, etc.), business logic flaws, session management vulnerabilities, API security, and authentication bypass attempts. We perform both authenticated and unauthenticated testing. The deliverable is a written report with vulnerability severity ratings (CVSS), reproduction steps, and specific remediation recommendations for each finding.

We review code with the OWASP Top 10 as a framework, supplemented by language-specific vulnerability patterns. For Node.js APIs, we focus on SQL injection, prototype pollution, and dependency vulnerabilities. For React frontends, we check for XSS via dangerouslySetInnerHTML, insecure data storage, and CSRF exposure. We use static analysis tools (Semgrep, CodeQL) to catch patterns at scale, then manually verify findings and reduce false positives.

Yes. SOC 2 Type II requires demonstrating that security controls have been operational over time. We assess your current control posture against the Trust Service Criteria, implement missing technical controls (MFA enforcement, encryption, access logging, vulnerability scanning), prepare policy documentation, and work with your auditor to address evidence requests. We have supported multiple SaaS companies through their first SOC 2 audit.

Secrets in environment variables or code repositories are a critical vulnerability. We implement centralised secrets management with HashiCorp Vault or AWS Secrets Manager, rotate credentials on a defined schedule, audit secrets access through Vault audit logs, and scan repositories with truffleHog to detect any secrets committed historically. All application secrets are injected at runtime, never baked into container images.

We audit AWS, GCP, and Azure environments against CIS Benchmarks — reviewing IAM policies for overly permissive roles, S3/GCS bucket access controls, security group rules, CloudTrail logging coverage, and encryption configuration. We use tools like Prowler, ScoutSuite, and Steampipe for automated compliance scanning and fix findings in order of risk. Network segmentation and VPC design are included in infrastructure security engagements.

We apply the STRIDE framework (Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, Elevation of Privilege) to your system architecture. This involves mapping trust boundaries, data flows, and entry points on a DFD, then identifying what can go wrong at each boundary and what controls mitigate each threat. Threat modelling sessions typically involve your product and engineering team and produce a living document that evolves with the architecture.

Yes. We provide incident response retainer engagements for organisations that want guaranteed expert availability if a breach occurs. During an active incident, our engineers assist with containment (isolating affected systems), forensic investigation (log analysis, timeline reconstruction), eradication (removing the attacker's foothold), and recovery. We also conduct post-incident reviews to prevent recurrence.

GDPR compliance requires both technical and procedural controls. We implement data minimisation, encryption of personal data at rest and in transit, audit logging for data access, automated data retention and deletion processes, consent management, and the technical infrastructure for right-to-erasure requests. We work alongside your legal team and DPO rather than providing legal advice directly.

Yes. Third-party dependencies are one of the most common attack vectors (supply chain attacks, known CVEs). We integrate dependency scanning with npm audit, Snyk, or Dependabot into the CI pipeline, establish a process for triage and patching of medium-to-critical CVEs within defined SLAs, and review critical dependency updates before they are merged. We also check for malicious packages that impersonate legitimate libraries.

Penetration testing is scoped as a fixed-price project with a defined scope and deliverable report. Embedded security engineering (code review, SOC 2 readiness, security architecture) is available as a monthly retainer. Both models include a dedicated account manager and direct access to the security engineer. For retainer engagements, a monthly check-in call reviews findings, remediation progress, and upcoming priorities.