Cybersecurity Product Penetration Tester

Hitachi, Ltd.; Poland; On-site; PLN 55,000 - 75,000; Full time

Job summary

Hitachi Energy Services SP. Z O.O. is looking for a skilled security researcher for their Cybersecurity Assurance Center in Krakow. This role involves penetration testing across various products and supporting the implementation of security practices within the development lifecycle.

The ideal candidate should have a strong understanding of TCP/IP protocols, software exploitation, and vulnerability assessment tools. Good communication skills are essential for documenting findings and engaging with cross-functional teams.

All candidates are encouraged to apply, and reasonable accommodations will be provided to qualified individuals with disabilities.

Qualifications

• Experience in performing penetration tests.
• Knowledge of vulnerability assessment tools.
• Ability to document technical processes and findings.

Responsibilities

• Conduct tests on hardware and software products.
• Identify and exploit vulnerabilities in products.
• Collaborate with engineering teams for security integration.

Skills

In-depth knowledge of TCP/IP networking

Understanding of software exploitation

Good English communication skills

Understanding of OWASP Top 10

Knowledge of cryptographic protocols

Tools

Metasploit

Python

Job description

Location: Krakow, Lesser Poland, Poland

Job ID: R0133789

Date Posted: 2026-06-15

Company: HITACHI ENERGY SERVICES SP. Z O.O.

Profession: Engineering & Science

Job Schedule: Full time

Remote: No

The opportunity

We are looking for a skilled security researcher to join Hitachi Energy Cybersecurity Assurance Center – our product security team that performs the penetration testing of every product we build. In this role you will:

• Test every kind of product before release – hardware, software, cloud, mobile, OT solutions
• Identify and exploit vulnerabilities across all Hitachi Energy products to eliminate them before releasing product to the market
• Work closely with engineers to support security‑by‑design approach implementation
• Use and develop state‑of‑the‑art tools, both hardware and software, including CsAC’s custom tools fine‑tuned for cryptography and LLM‑supported reverse engineering

How you’ll make an impact

• In‑depth knowledge of TCP/IP networking and application protocols concepts
• Understanding of software exploitation and common vulnerabilities
• Understanding of port scanning, vulnerability assessment and fuzzing tools
• Knowledge of protocols associated with web technologies
• Understanding of OWASP Top 10 and SANS 25 vulnerabilities and their mitigations
• Knowledge about security testing of mobile apps and related APIs
• Experience in working in multicultural environments
• Good English communication skills: verbal and writing of technical reports
• Knowledge of control communication protocols and technologies
• Proficient with one of the scripting languages (e.g., Python)
• Knowledge of cryptographic and security protocols
• Understanding of penetration testing tools like Metasploit; able to write auxiliary modules and code exploits
• Hands‑on experience with reverse engineering and binary analysis is a plus
• Experience with hardware exploitation techniques including firmware extraction, UART, JTAG, I2C interfacing is a plus
• Understanding RF, Bluetooth, NFC and wireless attack surfaces is a plus

Your background

• Pentesting – performing penetration tests of wide range of systems
• Research – gathering information about industry technologies, familiarizing with new communication protocols and their weaknesses
• Documentation preparation – reports creation, team’s internal documentation development
• Meetings – taking part in technical meetings and knowledge exchange sessions

Qualified individuals with a disability may request a reasonable accommodation if you are unable or limited in your ability to use or access the Hitachi Energy career site as a result of your disability. You may request reasonable accommodations by completing a general inquiry form on our website. Please include your contact information and specific details about your required accommodation to support you during the job application process.