Security Researcher (Penetration Testing / Product Security)
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Specialization Cybersecurity
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Experience Senior
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Location Kraków
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Working mode Hybrid
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Salary B2B: 1 100 – 1 360 PLN/day
Salary: 1100 – 1360 pln/md on B2B
Remote: elastic hybrid from Kraków (1-2 days per week from the office)
Project
We are looking for a skilled Security Researcher to join a Cybersecurity Assurance Center, part of a product security team responsible for penetration testing across a wide range of products.
Key Responsibilities
- Perform penetration testing across hardware, software, cloud, mobile and OT environments
- Identify, analyze and exploit vulnerabilities to prevent security issues before release
- Collaborate closely with engineering teams to support a security-by-design approach
- Use and develop advanced security tools, including custom cryptographic and reverse engineering solutions
- Conduct research on emerging technologies, protocols and potential attack vectors
- Prepare detailed technical reports and documentation
- Participate in knowledge-sharing sessions and technical discussions
Required Skills & Experience
- Strong understanding of TCP/IP networking and application protocols
- Solid knowledge of software exploitation techniques and common vulnerabilities
- Hands-on experience with port scanning, fuzzing, and vulnerability assessment tools
- Knowledge of web technologies and related security risks
- Familiarity with OWASP Top 10 and SANS Top 25
- Experience with mobile application security and APIs
- Proficiency in at least one scripting language (e.g. Python)
- Good knowledge of cryptographic and security protocols
- Experience using tools like Metasploit and writing custom exploits
- Strong English communication skills (written and spoken)
Nice to Have
- Experience with reverse engineering and binary analysis
- Knowledge of hardware exploitation (UART, JTAG, I2C, firmware extraction)
- Understanding of wireless technologies (RF, Bluetooth, NFC)
Responsibilities
- Perform penetration testing on various systems, including hardware, software, cloud, mobile, and OT environments
- Identify, analyze, and exploit vulnerabilities to improve product security before release
- Collaborate with engineering teams to support secure development practices
- Conduct vulnerability assessments, fuzz testing, and port scanning
- Research new technologies, communication protocols, and associated security risks
- Prepare detailed technical reports and internal documentation
- Participate in knowledge-sharing and technical discussions
- Use and develop advanced security tools, including custom-built solutions
Client – why choose this particular client from the Jit portfolio?
Our Client is an established global technology leader driving the digital transformation and innovation required to accelerate the transition toward a carbon-neutral future. Serving customers across the utility, industry, and infrastructure sectors, they provide cutting-edge solutions and services across the entire energy value chain. The organization is actively evolving the worlds energy systems to make them more sustainable, flexible, and secure, while precisely balancing social, environmental, and economic value.
With a proven track record and an unparalleled installed technological base spanning well over 100 countries, the company operates on a massive global scale.
About Jit Team
The Human Factor of IT – it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams.
Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.
Here’s how we get from first “hello”
to “welcome aboard”
You’ll meet with our HR team to discuss your experience, approach to software development, and teamwork. We’ll also verify your English language proficiency as part of the conversation. Then, you’ll take part in a technical interview focused on your skills and problem-solving mindset.
If both interviews go well, we’ll match you with a project aligned with your skills and expectations. You’ll then meet the client – this is where the final project-related decision is made.
Based on feedback and your preferences, we’ll prepare an offer tailored to your experience. We’ll agree on the project, salary, type of contract, and your start date.
We start with a short phone conversation to get to know each other. We’ll talk about your experience, career goals, and motivation, while giving you a chance to learn more about Jit Team and the role.
Depending on the role, you’ll complete a short recruitment task to showcase your skills. We’ll also verify your English language proficiency as part of this stage.
Next, you’ll meet your future Team Leader at our office. We’ll discuss your experience, ways of working, and how your skills match the role, while giving you a better understanding of the team and day-to-day collaboration.
If we’re a good match, we’ll prepare an offer tailored to your experience. We’ll agree on the salary, type of contract, and your start date. Welcome to Jit Team!
Benefits
We believe a great workplace is more than a set of benefits. It’s about trust, long-term relationships, and an environment where people can do their best work.
Jit Academy
Share and gain experience. Jit Academy is a platform serving a mutual knowledge exchange. Lecture others and share your expertise or join the audience.
Jit Communities
Join the group of experts. We ensure constant growth, that’s why we keep building communities dedicated to mutual education.
Growth support
We value people who are looking to develop their skillset. We proudly finance a variety of courses and certifications so that you can gain new competencies.
Jit Summer Office
Gain access to the office located at the very beach in Chałupy. Jit Trailer awaits visits of the team members and their families.
Jit Boats
Cruise the bay thanks to the motorboat awaiting at the Yacht Park in Gdynia. Furthermore, there is a fleet of jet skis and kites located at the beach in Chałupy.
Recommendations program
Would you recommend any IT specialist we could hire? Share the contact and gain a bonus if we hire them.
Flexible work hours
Start the day without haste.
At Jit, we begin and finish the day of work within a certain time frame, in stead of fixed hours.
Bonuses for content creators
We provide bonuses to those willing to participate in industry events as public speakers, and to content creators writing articles for our blog.
Mental health support
Mental health is fundamental. Take advantage of psychologists and psychotherapists’ support and reach for psychoeducational content on the wellbeing platform
Up-to-date equipment
We provide our teams with high-quality gear necessary to work. Choose between MacOs or Windows and work the way you prefer.
Teambuilding events
Meet new, interesting people. We’re dedicated to building human relations and often host informal events that bound our team members.
English lessons
Classes conducted for small groups, lectured
by our teachers, guarantee rapid results.
Private healthcare
Take care of your wellbeing. Members of Jit Team, gain access to a wide range of medical plans provided by Medicover or PZU.
Gym membership card
We provide Multisport and Medicover Sport gym cards so that you can improve your physical condition.
Life insurance
Increase your safety. No matter the form of employment, we provide life insurance plans to our colleagues.
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