Senior SQL Server DBA / Database Engineer (m/f/d)

Location: Warsaw

Technologies we use

Expected

• SQL

This is how we organize our work

This is how we work

• at the client's site

Your responsibilities

• Monitor and optimize SQL Server performance across customer production environments
• Identify and resolve database performance bottlenecks
• Optimize SQL queries, indexes and database performance
• Define and enforce standards for database migrations and migration scripts
• Review migration scripts prepared by development teams before production releases
• Set up and interpret database performance monitoring to proactively identify potential issues
• Analyze how application code and ORM layers impact database performance
• Support SQL Server environments hosted both in Azure and on-premises/customer-hosted infrastructure
• Work closely with an international development team on database changes and release readiness
• Use AI tools to support query analysis, schema review, migration script review and performance diagnostics

Our requirements

• 10+ years of professional experience in SQL Server DBA / Database Engineering
• Strong hands-on expertise with Microsoft SQL Server
• Extensive experience with database migration tools, processes and migration scripts
• Advanced knowledge of query optimization and index optimization
• Strong experience diagnosing performance issues in production environments
• Experience implementing and working with proactive database performance monitoring
• Good understanding of ORM and how application code can generate database load
• Experience with Azure-hosted SQL Server environments
• Experience with on-premises or customer-hosted SQL Server instances
• Practical experience using AI tools for query analysis, schema review, migration scripts or performance diagnostics
• English at C1 level
• Ability to work independently, define technical standards and establish processes for other engineering teams

What we offer

• Employment stability – long-term projects, cooperation with leading companies, and opportunities to develop across various areas of the IT industry.
• Flexible forms of cooperation – B2B contract, employment contract, or civil law contract.
• Benefits – Medicover healthcare package including dental care, FitProfit sports card, and English language classes.
• F45 gym training – available at our office on Puławska Street, with sessions led by professional trainers.
• Internal referral programme.
• Funding for IT certifications.
• Depending on the project, we work remotely, in a hybrid model, or onsite.
• Company events and team-building trips – we build strong relationships within the team also outside the office.
• We enjoy helping others – we support charity initiatives such as Szlachetna Paczka, and through our #PomagamyNexio initiative, we get involved where we can make a real difference.

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of foreign language classes
• sharing the costs of professional training & courses
• flexible working time
• fruits
• integration events
• dental care
• coffee / tea
• employee referral program
• charity initiatives
• English

Nexio Management Sp. z o.o.

Nexio Management is a team of approximately 550 IT consultants who have been delivering advanced technology solutions for clients in Poland and internationally for over 20 years. We are a community of experienced professionals who take an active, hands-on approach to every project, working closely with our clients to deliver real business value.

We specialize in the design, development, and maintenance of enterprise systems and applications, as well as IT consulting services. We believe that the best solutions are born from innovation and experimentation. That is why we have established our own R&D Center, home to NexioBot - our AI-powered mobile assistant robot designed to enhance communication through artificial intelligence.

We deliver projects through a variety of engagement models, including Managed Services, Fixed Price, and Team Augmentation (Scale-Up). Our clients represent a wide range of industries and rely on us to provide top-tier expertise, technical excellence, and long-term partnership.

By clicking the "Apply" button or otherwise submitting a recruitment application, you agree to the processing of your personal data by Nexio Management Sp. z o.o. with its registered office at: Puławska 182, 02-670 Warsaw (Employer), as the data controller, for the purpose of conducting recruitment for the position indicated in the advertisement.
Your personal data will be processed on the following legal bases: (a) to take action at your request before concluding a contract (e.g., information about expected remuneration and availability to start work); (b) based on our legitimate interest (e.g., name, surname, date of birth, contact details, education, professional qualifications, employment history); c) based on your consent, which is expressed by sending application documents containing information such as, for example, image or interests.The provision of all personal data mentioned above is voluntary, however, the data listed in points a) and b) is necessary to participate in the recruitment process. Failure to provide data will result in the inability to consider your application. Providing the remaining data is voluntary, but it can help in efficiently conducting the recruitment process.You have the right to request access to your data (including obtaining a copy), rectification of data, their erasure, restriction of processing, data portability, as well as to object to their processing. You also have the right to lodge a complaint with the President of the Personal Data Protection Office.
Your personal data may be transferred to providers of job advertisement publication services, providers of recruitment management systems, IT service providers (hosting), providers of IT systems.
The personal data you provide will not be used for profiling or for making automated decisions.
Your personal data will be processed for a period of up to 1 year from the end of the advertisement publication, unless you have given separate consent for the use of your personal data in future recruitments.
To exercise your rights or in case of any questions regarding the processing of your personal data, please contact us at: [email protected].