Senior Backend Engineer – Database & Data Platforms

Link Group; Warszawa, Wrocław, Kraków; Sur place; PLN 180 000 - 240 000; Plein temps

Résumé du poste

Link Group is seeking a Senior Back-end Developer specializing in database technologies. You will lead design, development, and optimization of data-heavy backend systems, ensuring robust data modelling, efficient queries, and scalable storage strategies.

Collaboration with cross-functional teams will be essential to deliver high-performance data solutions. The role emphasizes independent, senior-level engineering work with strong focus on reliability, performance, and clear communication within

Qualifications

• Minimum 6 years of professional backend/database experience.
• Strong hands-on experience with MongoDB, PostgreSQL, Virtuoso Triple Store and OpenSearch.
• Experience designing, developing, optimizing and maintaining database solutions.
• Solid data modeling, querying, indexing and performance optimization skills.
• Ability to troubleshoot complex database issues and work independently in a senior role.
• Excellent communication and collaboration skills.

Responsabilités

• Design, implement and optimize scalable database solutions.
• Collaborate with engineering teams to integrate data stores.
• Troubleshoot and resolve database performance issues.
• Mentor junior colleagues and contribute to architectural decisions.

Connaissances

MongoDB

PostgreSQL

Virtuoso

OpenSearch

Data modelling

Querying

Indexing

Performance optimization

Troubleshooting

Independent work

Communication

Description du poste

Link Group is seeking a Senior Back-end Developer specializing in database technologies. You will lead design, development, and optimization of data-heavy backend systems, ensuring robust data modelling, efficient queries, and scalable storage strategies.

Collaboration with cross-functional teams will be essential to deliver high-performance data solutions. The role emphasizes independent, senior-level engineering work with strong focus on reliability, performance, and clear communication within