{"id":4030045,"url":"https://alion.io/job/uni-systems-penetration-tester-offensive-security","title":"Penetration Tester (Offensive Security)","company":{"id":55545,"name":"Uni Systems","domain":"unisystems.com","url":"https://alion.io/company/uni-systems","size_band":"201-500","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":85,"open_postings":5,"ghost_share":0,"stale_share":0.8,"repost_share":0,"time_to_fill_p50_days":18,"computed_at":"2026-11-11T05:49:22Z"}},"role":"Security","role_family":"Security","seniority":null,"employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Athens, Greece"],"countries":["GR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"Bash","optional":false},{"name":"Burp Suite","optional":false},{"name":"Linux","optional":false},{"name":"Metasploit","optional":false},{"name":"Nessus","optional":false},{"name":"Nmap","optional":false},{"name":"OWASP","optional":false},{"name":"OWASP Top 10","optional":false},{"name":"PowerShell","optional":false},{"name":"Python","optional":false},{"name":"Red Teaming","optional":false},{"name":"Windows","optional":false}],"status":"live","first_seen_at":"2026-11-10T18:21:17Z","employer_posted_date":"2026-11-10","last_verified_at":"2026-11-11T19:04:45Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"At Uni Systems, we are working towards turning digital visions into reality. We are continuously growing and we are looking for a Penetration Tester to join our UniQue Offensive Security and Assurance Unit team.\nWhat will you be bringing to the team?\nOur UniQue people come from a variety of different backgrounds and industries, with different skillsets and approaches, but they have one thing in common: passion for technology and innovation!\nFor the Penetration Tester role we expect you to:\nPerform internal and external infrastructure penetration testing, covering networks, systems and Active Directory environments.\nConduct Web Application and API penetration testing using black-box, grey-box and white-box approaches.\nPerform vulnerability assessments, analyze scan results and manually validate identified vulnerabilities, including controlled exploitation where appropriate.\nParticipate in Security Source Code Reviews to identify vulnerabilities and insecure coding practices.\nPrepare penetration testing and vulnerability assessment reports, including technical findings, supporting evidence, risk assessment and remediation recommendations.\nPerform re-testing to verify that identified vulnerabilities have been addressed.\nExplain and demonstrate the technical and business impact of identified vulnerabilities to clients.\nDevelop or customize scripts and tools to support penetration testing activities.\nParticipate in the planning and execution of security assessments, following the agreed scope, testing methodology and Rules of Engagement.\nSupport specialized engagements, including Red Team operations, Mobile Application Penetration Testing and Social Engineering assessments.\nRequirements\nWhat do you need to succeed in this position?\nYour experience, skillset and qualifications are going to help you succeed in this position, moving forward.\nUniversity/College degree in Information Security, Computer Science, Information Technology or a related discipline, or equivalent practical experience.\n3+ years of hands-on experience in Penetration Testing or Offensive Security.\nHands-on experience in Web Application/API or Infrastructure Penetration Testing, with working knowledge of the other area.\nExperience in vulnerability assessments, manual testing and exploitation techniques.\nFamiliarity with Security Source Code Review and common application security weaknesses.\nGood knowledge of Windows and Linux operating systems, networking concepts and Active Directory security.\nUnderstanding of common Web Application and API vulnerabilities, including the OWASP Top 10 and OWASP API Security Top 10.\nExperience with penetration testing tools such as Burp Suite, Nmap, Metasploit, Nessus or equivalent.\nExperience with scripting and automation using Python, Bash, PowerShell or similar languages.\nKnowledge of penetration testing methodologies and frameworks, such as OWASP WSTG and PTES.\nUnderstanding of security technologies such as firewalls, IDS/IPS, WAFs and VPNs.\nAbility to prepare clear technical reports and communicate security findings to technical and business stakeholders.\nExcellent knowledge of the English language (written and verbal).\nFlexibility to travel abroad (mainly EU countries, approximately 5% of working time).\nThe following will be considered an asset:\nRelevant penetration testing and offensive security certifications, such as OSCP, CEH, CPTS, PNPT, eCPPT, eWPT, CREST, GPEN, GWAPT, BSCP, CRTO or equivalent, will be considered an asset.\nExperience in Red Team operations, Mobile Application Penetration Testing or Social Engineering assessments.\nExperience in cloud security assessments, particularly Microsoft Azure or AWS.\nMaster's Degree in Information Security or a related discipline.\nBenefits\nWhat are we offering to our UniQue IT People?\n People-first approach and open environment to express your ideas\n Work-life balance and a hybrid work model\n Continuous training and development\n Opportunities to join innovation initiatives\n Ticket restaurant - meal vouchers\n Corporate laptop and equipment\n Corporate mobile phone subscription\n Health and insurance plan for you and your family members\n Employee consulting and guidance support by Ergonomia\n Discounts on the services and products of our Group’s companies\n Gift vouchers for major life milestones\n Special work schedule on summer Fridays and birthdays\n Our UniQue IT people are the most valuable part of Uni Systems; their knowledge and experience have made us the leading and reliable systems integrator of today and have contributed to our steady financial growth. We have created and are maintaining a stable working environment for our employees, with countless opportunities to innovate and thrive. Our work culture recognizes our UniQue IT people and supports the free sharing of ideas and the flow of information via open communication while appreciating and effectively utilizing the talents, skills, and perspectives of each employee.\nAt Uni Systems, we are providing equal employment opportunities and banning any form of discrimination on grounds of gender, religion, race, color, nationality, disability, social class, political beliefs, age, marital status, sexual orientation or any other characteristics. Take a look at our Diversity, Equality & Inclusion Policy for more information.","description_format":"text","description_chars":5319,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"All levels","optional":false}]},"benefits":["Hybrid work"],"hiring_locations":[{"name":"Greece","iso":"GR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Penetration Testing","IT Consulting & Digital Transformation","Systems Integrators"],"lifecycle":[{"event":"open","at":"2026-11-10T18:21:17Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":18,"reasons":["conf:1","win:early"],"computed_at":"2026-11-11T05:49:22Z"},"pay":null,"html_url":"https://alion.io/job/uni-systems-penetration-tester-offensive-security","json_url":"https://alion.io/job/uni-systems-penetration-tester-offensive-security.json","meta":{"generated_at":"2026-11-11T19:14:43Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":37104,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-12T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":55545},"rest":"https://alion.io/mcp/rest/get_company?id=55545"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Funi-systems-penetration-tester-offensive-security"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Funi-systems-penetration-tester-offensive-security"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Funi-systems-penetration-tester-offensive-security"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/uni-systems-penetration-tester-offensive-security\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Funi-systems-penetration-tester-offensive-security"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":4030045}},{"tool":"search_jobs","arguments":{"company":"unisystems.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":4030045},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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