RevelSI
AI Cybersecurity Engineer
Skills
4 days ago
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Important information
Contract type:
Permanent
Location:
Bucharest, Romania
Work mode:
Onsite
Published on:
24 October 2026
What they need
REVELSI is a global cybersecurity, AI, software, and infrastructure services organization. We work with worldwide enterprises to design, build, secure, and operate the systems their business depends on.
Our top priority is safeguarding the fast-evolving global infrastructures and technologies.
We integrate cybersecurity into infrastructure development and operational processes, alongside software development, to proactively stay at the leading edge of industry advancements.
REVELSI TEAM
At REVELSI , we combine deep technical expertise with a Silicon Valley-inspired mindset: agile, innovative, and collaborative.
We’re a collaborative team that values performance and a positive work environment. We are committed to delivering high-quality results, supporting each other, and fostering a professional and friendly atmosphere.
We’re looking for a team player with specialized skills and ready to make an impact alongside experts in cybersecurity, network design, architecture, AI & software development, and IT management.
You’ll collaborate with experienced IT (Security) professionals, expand your skills, and enjoy the journey in a team that embraces challenges with energy and enthusiasm .
YOUR DAY-TO-DAY:
- Research and implement enterprise-grade prompting techniques, including Chain-of-Thought and Tree-of-Thought reasoning
- Collaborate closely with cross-functional teams to understand experimental findings and prototypes, and how they translate to customized use cases
- Bridge the gap between research exploration and practical AI implementation
- Offer support on designing complex agentic systems with multiple interacting agents
- Define best practices and standards for AI-focused application design and development - covering deployment patterns, documentation, library adoption, and group-wide standards
- Deploy and manage production-grade infrastructure for AI/ML applications
- Conduct regular benchmarks, perform statistical analysis, and present findings to drive data-informed decisions
- Develop internal tools/scripts to automate testing, fuzzing, logging/telemetry analysis, and reproducible experiments
- Track and analyze emerging AI/LLM threats (prompt injection, jailbreaks, data leakage, model extraction, training data poisoning, RAG poisoning, agent/tool abuse)
YOUR PROFILE:
- Bachelor’s degree in Data Science, Computer Science, Information Security, or a related field (Master’s degree is a plus)
- 2+ years of experience in security research, application security, ML engineering, or a related field, with hands-on delivery of solutions, assessments, or mitigations
- Working knowledge of LLMs and common techniques such as prompt engineering, in-context learning, and RAG
- Practical experience with AI security risks and techniques (prompt injection, jailbreak techniques, data exfiltration patterns, retrieval poisoning, model inversion/extraction concepts).
- • Experience building AI/ML applications integrating various AI services (Azure OpenAI, AWS Bedrock).
- • Proficiency in scripting programming languages (Python, Bash, PowerShell, Go).
- • Understanding of HTTP, jRPC, and GraphQL APIs.
- • Understanding of cloud fundamentals (IAM, private networking, secrets management, encryption, monitoring), focused on Azure (AWS exposure is a plus).
- Willing to work from Monday to Friday between 12:00 and 21:00 with 1 hour lunch break, in a hybrid system (4 days from our office)
WE VALUE OUR EMPLOYEES:
At REVELSI , we create an environment that supports your well-being, growth, and work-life balance:
- Private healthcare & medical insurance
- Private dental services
- Meal vouchers
- Referral bonus program
- Learning & development opportunities
- Team buildings & events
- Pizza day and free drinks at the office
- Seasonal gifts (Christmas / Easter)
- 21 days PTO, increasing up to 25 based on seniority
Ready to Join Us?
Click “Apply” and let’s get started!
Every day is an opportunity to grow and go beyond our limits! We embrace challenges and succeed together as a team—because great things happen when we collaborate.
Equal Opportunity Employment : REVELSI is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations, and ordinances.
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