Securin is an AI-native cybersecurity company. Our Pre-emptive Exposure Management Platform turns exposure data into clear decisions, giving organisations the confidence to know which risks are exploitable, what to fix first, and how to act before attackers do.

Securin delivers penetration testing, vulnerability management and offensive research for enterprises, critical infrastructure operators and public-sector clients. It is investing heavily in AI-augmented zero-day discovery and autonomous offensive testing.

Job Summary:

OT / ICS Penetration Testing

▪ Plan and execute safety-first penetration tests of OT/ICS environments (water and wastewater, energy, manufacturing, building systems), including passive asset discovery, Purdue-model segmentation testing and IT-to-OT pivot analysis.

▪ Assess PLCs, RTUs, HMIs, SCADA servers, historians and engineering workstations across major vendors (e.g., Rockwell/Allen-Bradley, Siemens, Schneider Electric) and SCADA platforms (e.g., VTScada, Ignition, AVEVA/Wonderware).

▪ Test industrial protocols such as Modbus/TCP, DNP3, EtherNet/IP/CIP, S7comm, OPC UA, BACnet and IEC 60870-5-104/61850 for authentication, integrity and logic-manipulation weaknesses.

▪ Build and use lab or digital-twin replicas to validate attack paths before touching production; operate strictly within client-approved rules of engagement, change windows and safety constraints.

▪ Map findings to ISA/IEC 62443, NIST SP 800-82 and MITRE ATT&CK for ICS, with remediation guidance that is realistic for plant operations.

Exploit Development & Zero-Day Discovery

▪ Conduct vulnerability research on binaries, firmware, embedded/IoT devices, web applications and enterprise software using reverse engineering, source code review and fuzzing (coverage-guided, protocol-aware and grammar-based).

▪ Write reliable proof-of-concept and weaponized exploits for memory corruption (stack/heap overflows, use-after-free, type confusion), logic flaws and authentication bypasses, including bypass of modern mitigations (ASLR, DEP/NX, CFG, stack canaries).

▪ Perform n-day analysis and patch diffing to rapidly validate exploitability of newly disclosed CVEs for clients and for Securin’s exposure intelligence.

▪ Apply AI-augmented techniques, such as LLM-assisted code review, agent-driven fuzz harness generation and automated crash triage, to scale discovery within Securin’s Zero Day program.

▪ Run coordinated vulnerability disclosure with vendors, CERTs and CNAs, and author technical advisories and research publications.

AI & Agentic System Pentesting

▪ Assess LLM applications, RAG pipelines, autonomous agents and tool integrations (including MCP servers and plugins) for direct and indirect prompt injection, jailbreaks, sensitive data disclosure, excessive agency, insecure output handling, tool abuse and supply-chain weaknesses.

▪ Test against the OWASP Top 10 for LLM Applications, OWASP agentic AI threat guidance, MITRE ATLAS and the NIST AI RMF, and translate results into concrete architectural fixes.

▪ Build and operate automated adversarial testing harnesses (e.g., PyRIT, garak, promptfoo) and custom attack agents for repeatable AI red teaming.

▪ Contribute offensive techniques and agent workflows to Securin’s AI-driven offensive security platform and autonomous pentesting research.

Core Delivery & Team Contribution

▪ Conduct network, web application, API, cloud and red team engagements, emulating real-world adversaries using the MITRE ATT&CK framework.

▪ Develop and execute detailed test plans and methodologies; manage engagement timelines, deadlines and client expectations.

▪ Prepare high-quality reports using Securin templates and present findings to technical and executive stakeholders in kick-off calls and readouts.

▪ Advise developers, system administrators and OT engineers on secure configuration, coding best practices and remediation.

▪ Mentor analysts, contribute to internal training, methodology and tooling, and help shape report deliverables.

Requirements

▪ Minimum 2-5 years of hands-on penetration testing and offensive security experience, including significant depth in at least two of: OT/ICS security, exploit development/vulnerability research, and AI/LLM security.

▪ Demonstrated OT/ICS penetration testing experience on real industrial environments or high-fidelity labs, with a strong grasp of safety-first testing practices.

▪ Proven exploit-writing ability, evidenced by original vulnerability research: CVE credits, published advisories or exploits, conference talks, or high-level bug bounty/CTF results.

▪ Hands-on experience testing LLM applications or agentic AI systems, with a working understanding of how models, retrieval, tools and permissions combine to create attack surface.

▪ Strong programming skills in Python and C/C++, and working knowledge of x86/x64 and ARM assembly; Bash/PowerShell required; Rust or Go a plus.

▪ Proficiency with reverse engineering and debugging tools (IDA Pro, Ghidra, Binary Ninja, WinDbg, GDB with pwndbg/GEF), fuzzers (AFL++, libFuzzer, boofuzz) and offensive tooling (Burp Suite, Metasploit, Nmap, Wireshark with ICS dissectors, C2 frameworks such as Cobalt Strike or Sliver).

▪ Familiarity with industry standards and frameworks including OWASP Top 10, CVE/CWE, OSSTMM, NIST, MITRE ATT&CK, ISA/IEC 62443 and MITRE ATLAS.

▪ Bachelor’s degree in Computer Science, Information Security, Electrical/Control Engineering or a related field, or equivalent practical experience.

▪ Excellent written and spoken English; able to convey complex technical concepts to technical and non-technical audiences.

▪ Based in Europe and eligible to work through EPAM; able to overlap with US business hours for client meetings, and available for occasional travel (e.g., on-site OT assessments) when required.

Certifications are a plus, not a substitute for demonstrated skill. Public research, CVEs and exploits carry equal or greater weight.

Securin is committed to becoming an AI-native organization where GenAI is embedded into how every team works: not as an occasional assistant, but as a core part of delivery, operations and how our expertise compounds over time. Everyone is expected to integrate GenAI tools into daily workflows, understand their limitations, follow data classification rules, and move beyond using GenAI to building with it. For this role in particular, we expect you to:

▪ Use GenAI tools (e.g., Claude, ChatGPT) daily for research, code generation, analysis and reporting, and validate AI-generated output before acting on it.

▪ Design and build multi-step AI agents for offensive tasks with human-in-the-loop validation and sandboxed execution.

▪ Apply AI security fundamentals (prompt injection risk, data classification, responsible handling of client data) in your own workflows, not just in client tests.

▪ Connect GenAI tools to internal data sources and APIs, and contribute reusable skills, templates and agent configurations to Securin’s shared repository.

▪ Participate in AI adoption sprints, hackathons and knowledge-sharing within the team.