Data Engineer

About us

LLInformatics is a forward-thinking IT consulting firm, trusted by clients across Europe and North America. We specialize in delivering complex projects on time, with exceptional quality, and always meeting the highest compliance standards. Our remote-first team of 130+ experts is passionate about building cutting-edge digital products that drive real results. With a focus on data-driven decisions, measurable outcomes, and a strategic mindset, we’re raising the bar in our industry—backed by a strong, collaborative work culture that fuels our success.

• Contract Type: B2B

• Location: Remote or in our Warsaw office

Your tasks and responsibilities:

• Design, develop, and maintain ELT/ETL processes and scripts for data integration and transformation

• Create and maintain data mappings with business logic to support data processing and reporting

• Work with data warehouse structures and support data integration into analytical environments

• Analyze and optimize existing data processing workflows and pipelines

• Collaborate with the development and business teams to understand and implement business logic in data processes

• Create and maintain technical documentation and user instructions

• Troubleshoot data-related issues and provide technical support

• Support data preparation and transformation for reporting and analytics
  

Requirements:

• Good knowledge of Python (experience with Ruby on Rails is a plus)

• Strong proficiency in SQL

• Experience in building and maintaining ELT/ETL pipelines

• Experience with data mapping and data transformation logic

• Familiarity with MS SQL and PostgreSQL

• Experience working with data warehouse concepts and structures

• Knowledge of migration scripts or data transformation scripts (nice to have)

• Strong analytical and business understanding of data

• High level of ownership and problem-solving mindset

• English at B2 level or higher to collaborate in an international team

Why join us? 

• Flexible Working Hours – We focus on results! Manage your time, keep your team informed about your availability, and attend key meetings.

• Work from Anywhere – Choose your ideal setup! Work 100% remotely within the EU, go hybrid, or enjoy our Warsaw office, fully equipped for productivity.

• Comprehensive Onboarding – From day one, we ensure you feel comfortable and supported, so you can quickly become part of the team.

• Flat Structure – We value initiative and open communication. Every voice matters here!

• Positive Company Culture & Team Spirit – We create an environment where everyone feels appreciated and comfortable.

• Modern Work Methods – We use cutting-edge project management techniques inspired by the IT world.

• Transparent Communication – Regular 360° feedback sessions and mentor support to help you grow.

• Top-Notch Equipment – Get a MacBook for your work. If you choose to work from our Warsaw office, you'll also have access to a 34” (16:9) widescreen monitor and an ergonomic standing desk.

• Weekly English Lessons – Optional classes with a native speaker to help you improve your skills.