Senior SQL Server DBA / Database Engineer (k/m/n)

Nexio Management Ltd.; Warszawa; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Medicover healthcare

FitProfit card

English classes

Gym access (F45)

Referral programme

IT certification funding

Job summary

Nexio Management Ltd. is a team of about 550 IT consultants delivering advanced technology solutions for clients in Poland and internationally for over 20 years. We design, develop, and maintain enterprise systems, and we run an R&D Center with NexioBot, an AI-powered mobile assistant for better communication.

We offer Managed Services, Fixed Price, and Team Augmentation. The SQL Server DBA role focuses on optimizing, migrating, and monitoring SQL Server environments, collaborating with

Qualifications

• 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.
• 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.

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.

Skills

SQL Server

Performance tuning

Azure

Migration scripts

DBA experience

Team coordination

Tools

Azure SQL

Job description

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.

• 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
• 10+ years of professional experience in SQL Server DBA / Database Engineering
• Strong hands‑on expertise withMicrosoft 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 ofORM 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 atC1 level
• Ability to work independently, define technical standards and establish processes for other engineering teams

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.