Senior Back-end Developer - Database
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Senior · 6+ years exp
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Link Group is a Polish technology services company founded in Warsaw in 2016 that builds and supplies engineering teams to clients across Europe. Its model combines body leasing and managed teams with delivery of complete software, cloud and cybersecurity projects, drawing on a large bench of contractors rather than a fixed permanent staff. The company works heavily in financial services, telecommunications and public sector projects, and has built a specialisation in blockchain and distributed ledger engineering alongside more conventional cloud and application development work.
Senior Back-end Developer - Database
We are looking for a Senior Back-end Developer with strong experience in database technologies and data-intensive backend environments.
Requirements:
- Minimum 6 years of professional experience working with backend/database technologies
- Strong hands-on experience with:
- MongoDB
- PostgreSQL
- Virtuoso Triple Store
- OpenSearch
- Experience designing, developing, optimizing and maintaining database solutions
- Strong understanding of data modelling, querying, indexing and performance optimization
- Experience troubleshooting complex database-related issues
- Ability to work independently in a senior-level engineering role
- Good communication and collaboration skills
Nice to have:
- Experience working with large-scale or distributed data environments
- Experience with cloud-based infrastructure
- Knowledge of CI/CD and modern software development practices
- Experience working in Agile teams
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