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IT Systems Engineer – Microsoft 365 & Exchange Specialist (f/m/x) Miejsce pracy: Rzeszów Technologies we use Expected Microsoft 365 Microsoft Exchange Server Microsoft Office Microsoft Excel Optional Mozilla Thunderbird About the project We are seeking a skilled and proactive IT Systems Engineer to support a project focused on transitioning users from legacy email platforms to Microsoft Outlook. The ideal candidate will bring hands-on experience in email system migrations, strong technical knowledge of Microsoft 365 and Exchange, and excellent communication skills to collaborate effectively with both technical teams and business users. This is a fully on-site role based in Rzeszów. Your responsibilities Perform data transfers and system migrations from Mozilla Thunderbird (POP3) to Microsoft Outlook Resolve technical issues before and after migration, including Outlook profile setup and mobile device reconfiguration Provide expert-level support for Microsoft Exchange and Microsoft 365 environments Deliver knowledge transfer sessions and ongoing assistance to end users and internal teams Maintain clear and comprehensive documentation of migration procedures, configurations, and support protocols Communicate effectively with business stakeholders and cross-functional teams to ensure alignment and project success Our requirements Proven experience in email system migrations, ideally involving POP3 and Mozilla Thunderbird Strong understanding of email protocols (POP3, IMAP) Minimum 2 years of hands-on experience with Microsoft 365 services At least 5 years of experience in the IT sector Solid background in user support, helpdesk, or systems administration Proficiency in Microsoft Outlook and Excel Fluent in both Polish and English (spoken and written) Residing in Poland required Optional Experience working in Agile/Scrum or hybrid project environments At least 2 years of experience in an international or global organization Higher education in a technical field (e.g., Computer Science or related) This is how we organize our work This is how we work agile scrum What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People Recruitment stages Send your CV Talk to us about your expectations Learn more about our projects and choose the best Start your adventure with Sii! Sii Sp. z o.o. Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment. Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.