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SQL Server Performance Specialist

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Onsite

SQL Server Performance Specialist

Affinity

SQL Server Performance Specialist

Skills

SQL QueriesDatabase Administration

2 months ago

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Important information


Contract type:

Permanent

Location:

Lisbon, Portugal

Work mode:

Onsite

Published on:

10 August 2026

What they need


A Job? Or a Lifetime Experience? Start Yours Here!

Our mission is to be a meaningful part of our people’s careers. As we grow, so does our determination to deliver the best possible experience to our employees and clients — and that’s exactly what drives us. We are a Portuguese technology consulting company with offices in Lisbon, Porto and Óbidos, and representatives in Brazil and Tunisia. With over 12 years of market expertise, we are now a universe of around 400 people working onsite, remotely or in hybrid models on projects across 20+ countries.

We believe great people build successful companies, and that’s why we are committed to valuing, recognizing and developing our professionals.

We don’t want to be just another line on your CV — we want you to live a true Lifetime Experience with us. We invest in training and certifications that validate your real progression, promote a healthy work-life balance, and offer benefits that truly impact your personal life and career.

#welcometoyourfuture

What we’re looking for:

  • Professional experience in SQL Server / Database Administration , with a strong focus on performance and query optimization
  • Strong hands-on experience with SQL and T-SQL , including query tuning and DML operations
  • Solid knowledge of SQL Server internals , namely execution plans, query optimizer, statistics and indexing
  • Experience with performance monitoring and troubleshooting , ideally using Query Store and Extended Events
  • Experience in high-volume OLTP environments , where performance, availability and reliability are critical
  • Strong ability to analyse and optimize database performance in mission-critical environments
  • Experience with database design and performance optimization , beyond isolated query tuning
  • Senior or Expert level, with a practical and problem-solving mindset

Be Affinity

#Affinity – Build close and empathetic relationships with colleagues, clients and candidates (and not only with technologies, languages and platforms). Team spirit and a positive attitude;

#Ambition – The drive to do more and better. A willingness to exceed expectations and grow both personally and professionally;

#Action – The energy to make things happen. Demonstrate proactivity and initiative;

#Learning – A desire to evolve individually and collectively and become an expert in the tech market;

#Assertiveness – Transparent and honest communication, always with constructive feedback.

Your #LifetimeExperience

· Take part in national and international projects in a company built on personal relationships, simplicity and efficiency, with a disruptive approach in the tech market;

· Access a personalized career and training plan directly proportional to your performance and interests;

· Be part of a welcoming environment based on trust, respect and informality;

· Join our Affinity Communities (sports, technology, hobbies, etc.) and actively participate in social and environmental responsibility projects;

· Benefit from a range of perks, partnerships, discounts, events and internal initiatives.

Beyond your professional satisfaction, we want to provide you with memorable leisure and social opportunities worthy of a true Affinity Experience.

Join the Experience!

Send us your application and take the opportunity to get to know us and follow us on:

https://www.instagram.com/affinityportugal/ https://www.linkedin.com/company/2701281/admin/

https://twitter.com/WithAffinity

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