Senior Security Researcher

Role Overview

• Analyze and dissect malware campaigns and attacker tooling to extract actionable intelligence and inform detection strategy.
• Track emerging threats, vulnerability disclosures, and attacker techniques; translate findings into detection improvements and internal threat intelligence reports.
• Work closely with fellow researchers to build shared understanding of current threat landscapes and feed insights into product and detection roadmaps.
• Research and develop new detection methods, including YARA rules and AI assisted tools
• Investigate evasion techniques and contribute to anti-evasion controls in our analysis pipeline.
• Evaluate open-source and third-party tools for potential integration into the ReversingLabs platform.
• Research and develop AI-powered capabilities to transform security workflows, with a focus on scaling human expertise through advanced automation and reasoning models.
• Develop and evaluate pipelines that streamline complex analysis tasks and accelerate the synthesis of technical threat data into actionable outcomes.
• Advance the use of AI for detection augmentation, leveraging generative and discriminative models to enhance pattern recognition and threat categorization at scale.

Requirements

• Core Security Experience
• 6–8 years of experience in cybersecurity, with a strong foundation in malware analysis and threat research.
• Hands-on expertise in static and dynamic analysis techniques; familiarity with tools such as IDA Pro, OllyDbg, Wireshark, and YARA.
• Solid understanding of network protocols, OS internals, and attacker tradecraft.
• Programming proficiency in Python; experience with C/C++ or Assembly is a plus.
• Experience with virtualization, sandboxing, and automated analysis environments.
• Research & Collaboration
• Ability to self-direct research, synthesize complex findings, and communicate them clearly to technical and non-technical audiences.
• Collaborative mindset, comfortable working across engineering, product, and research functions.
• Strong analytical and problem-solving skills; ability to reason about signal quality and detection effectiveness
• AI & Automation Skills (Clearly Preferred, Not Required)
• Familiarity with large language models (LLMs) and their application in security contexts, e.g., for text analysis, code understanding, or workflow automation.
• Experience building or evaluating automation frameworks or LLM-powered workflows
• Understanding of prompt engineering, retrieval-augmented generation (RAG), or fine-tuning concepts as applied to domain-specific tasks.
• Prior work on AI-assisted detection or ML-based classifiers in a security product context is a strong differentiator.
• Education & Certifications
• Bachelor's degree in Computer Science, Cybersecurity, or a related field, or equivalent practical experience.
• Relevant certifications (OSCP, GREM, CISSP) are desirable but not required.

Tech Stack

• Assembly
• Cyber Security
• Python

Benefits

• On-site, hybrid, and remote work as options (paid accommodation and transportation to Zagreb during onboarding for remote employees), and flexible working hours
• Generous compensation and a bonus system based on annual performance
• Permanent contract with a fast-growing global company with Fortune 500 and government agencies as clients
• Opportunity to work on innovative solutions in malware analysis & software supply chain security, crafted in our very own Croatian R&D center
• Great career advancement opportunities – clear goals and internal promotions
• Company library and the possibility of ordering books of choice via Amazon
• Employee referral bonus program: EUR 1,060 net for junior positions, EUR 2,123 net for mid to senior positions, and EUR 2,654 net for principal/managerial positions
• Multisport card, annual health checkup, newborn child allowance, rent-cost, and 3rd pillar pension benefits
• Wellness Weekends – quarterly, company-wide three-day weekend, starting with a company-paid Friday off for all employees
• Fully covered car garage in Radnička cesta for all employees