Security Researcher

🔥 0 minutes ago

🇧🇬 Bulgaria – Remote

⏰ Full Time

🟡 Mid-level

🟠 Senior

👮‍♂️ Cybersecurity / Security Engineer

👻 Ghost score 15%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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MWDN

WebsiteLinkedInAll Job Openings

51 - 200 employees

💼 Consulting

📦 Logistics

🏥 Healthcare

Consulting • Logistics • Healthcare

MWDN is a comprehensive IT services company that specializes in software development, web design, mobile development (iOS and Android), and desktop development. With over 200 in-house software engineers, MWDN provides a range of services including staff augmentation, dedicated teams, and global IT recruitment. Operating globally with delivery centers in Central and Eastern Europe, MWDN effectively bridges businesses in the USA, Europe, and Israel to top-tier tech talent while focusing on cost-effective solutions and personalized services tailored to client needs.

📋 Description

• Research browser, WebView, Android, and iOS environments from an attacker’s perspective • Identify new security signals, behavioral indicators, and technical patterns to improve fraud, abuse, automation, and AI agent detection • Investigate attacker techniques involving bots, browser automation, AI agents, emulators, device spoofing, hooking, instrumentation, remote access tools, and anti-detection methods • Design and run experiments comparing legitimate, automated, AI-assisted, and manipulated environments • Evaluate signals for reliability, stability, spoofability, privacy sensitivity, performance impact, and production feasibility • Translate research findings into SDK feature requirements for web and mobile data collection • Build internal tools, scripts, and lab environments for signal research and validation • Collaborate with SDK, engineering, product, and detection teams to move research from hypothesis to production

🎯 Requirements

• 3+ years of hands-on experience in security research, mobile security, browser research, fraud research, detection research, reverse engineering, or a related technical role • Experience with web browsers, mobile browsers, WebViews, browser APIs, JavaScript runtime behavior, browser automation, fingerprinting, client-side web security, and low-level browser technologies • Familiarity with modern open-source browsers and rendering engines such as Chromium, WebKit, Blink, or Gecko • Experience with native Android and/or iOS applications, mobile OS behavior, app instrumentation, emulators, device spoofing, mobile automation, mobile security, and low-level platform APIs • Practical understanding of attacker techniques involving automation, AI agents, spoofing, and anti-detection techniques • Ability to identify technical signals and turn them into detection or data collection opportunities • Experience designing technical experiments and validating research hypotheses • Experience with SDK development languages and environments such as TypeScript/JavaScript, Kotlin/Java, or Swift/Objective-C • Scripting ability, preferably in Python • Ability to work independently on ambiguous problems and communicate findings clearly to engineering, product, and research stakeholders • Experience with Web SDKs, Mobile SDKs, client-side telemetry, device intelligence, behavioral signals, AI agent detection, or fraud detection products • Experience researching bots, credential stuffing, scraping, headless browsers, AI-assisted automation, app cloning, SDK abuse, phishing kits, malware, or anti-detection frameworks • Experience with reverse engineering Android or iOS applications • Familiarity with detection quality measurement, feature evaluation, false-positive analysis, production monitoring, or machine learning concepts • Bachelor's degree in Computer Science, Cybersecurity, Data Science, or a related field, or equivalent hands-on experience

🏖️ Benefits

• Security: carefully vetted clients to minimize risks and ensure reliability and timely payments • Career support and help finding new opportunities if a project is not the right fit • Legal assistance with independent contractor or sole proprietorship status, taxes, and related processes • English courses • Professional growth opportunities • Team-building events • Flexible working hours • Full financial and legal support for independent contractors • Free English classes with native speakers or Ukrainian teachers • Dedicated HR support • People-first management with minimal bureaucracy • Friendly company culture