{"id":3454765,"url":"https://alion.io/job/qualco-qa-test-engineer","title":"QA / Test Engineer","company":{"id":55578,"name":"QUALCO","domain":"qualco.tech","url":"https://alion.io/company/qualco","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":93,"open_postings":10,"ghost_share":0,"stale_share":0.5,"repost_share":0,"time_to_fill_p50_days":21,"computed_at":"2026-11-02T06:13:15Z"}},"role":"QA","role_family":"QA","seniority":null,"employment_type":null,"work_mode":"on_site","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":"Airflow","optional":false},{"name":"dbt","optional":false},{"name":"ETL/ELT","optional":false},{"name":"GDPR","optional":false},{"name":"Informatica","optional":false},{"name":"Oracle","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Pytest","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"SSIS","optional":false},{"name":"Talend","optional":false}],"status":"live","first_seen_at":"2026-10-29T12:36:07Z","employer_posted_date":"2026-10-29","last_verified_at":"2026-11-03T03:19:19Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"At Quento Technologies S.A., the ICT arm of the Qualco Group, we deliver comprehensive and innovative solutions across AI, Digital Engineering, Cloud, and Cybersecurity, helping businesses accelerate digital transformation. With a presence in Greece, Luxembourg, and Belgium, and backed by the expertise of the Qualco Group, we combine deep technical knowledge with strategic partnerships to support business growth.\nAt Quento Technologies S.A. we empower our people to innovate and lead in delivering transformative ICT solutions to our clients worldwide.\nQuento Technologies S.A. seeks a highly motivated and experienced a QA / Test Engineer to be responsible for validating data processing correctness, reconciliation accuracy, pipeline integration, and the functional reliability of the implemented solution.\nYour responsibilities will entail:\nDefine test scenarios and acceptance validation approaches for selected reconciliation processes;\nValidate ingestion, preprocessing, transformation, and reconciliation outputs;\nVerify reconciliation results against agreed expected outcomes;\nDevelop SQL-based validation queries and automated regression tests where appropriate;\nSupport integration testing, performance testing, defect resolution, and UAT;\nMaintain testing evidence and contribute to delivery acceptance activities;\nEnsuring that all activities and duties are carried out in full compliance with regulatory requirements and supporting the continued implementation of the Group Anti-Bribery and Corruption Policy.\nRequirements\nUniversity degree in Computer Science, Engineering, or a related field;\n4+ years of professional experience in Software QA, Data Testing, or Test Engineering;\nAt least 2-3 years of hands-on experience in ETL/ELT testing, database testing, data validation, or comparable data-intensive projects;\nStrong SQL skills for data comparison, reconciliation, and validation;\nTesting of ETL/ELT pipelines, source-to-target mappings, and database transformations;\nData completeness, consistency, uniqueness, and integrity checks;\nReconciliation testing, including matching criteria, expected discrepancies, and exception handling;\nFunctional, integration, regression, and end-to-end testing;\nDesign of test cases, representative test datasets, and expected results;\nTesting of batch processing, file validation, error handling, retries, and reprocessing;\nDefect investigation, evidence documentation, and UAT support;\nFamiliarity with test automation and data testing frameworks;\nExperience in data migration validation, billing systems, Revenue Assurance, financial reconciliation, or large-volume batch data processing;\nExperience in data-centric testing is particularly important; exclusive experience in UI or frontend testing would not be sufficient for this role.\nRelevant Technologies / Experience\nSQL, PostgreSQL, Oracle, SQL Server, Python, pytest, dbt tests, Apache Airflow, Informatica, Talend, SSIS, or equivalent database, ETL, and testing technologies.\nBenefits\nYour Life @ Qualco Group\nOn top of challenging work environment, we are offering:\nCompetitive compensation, ticket restaurant card, and annual bonus programs\nCutting-edge IT equipment, mobile and data plan\nModern facilities, free coffee and beverages, indoor parking, and company bus\nPrivate health insurance, onsite occupational doctor, and workplace counselor\nFlexible working model, hybrid benefits & home equipment benefits\nOnsite gym, wellness facilities, and ping pong room\nCareer and talent development tools\nMentoring, coaching, personalized annual learning and development plan\nEmployee referral bonus, regular wellbeing, ESG and volunteering activities\nYour race, gender identity and expression, age ethnicity or disability make no difference in Quento Technologies S.A. We want to attract, develop, promote, and retain the best people based only on their ability and behavior.\nDisclaimer: Quento Technologies S.A. collects and processes personal data in accordance with the EU General Data Protection Regulation (GDPR). We are bound to use the information provided within your job application for recruitment purposes only and not to share these with any third parties. 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