Jobs and Careers

Data Transformation Developer (C++, SQL)

Hungaryfull_timeVerifiedPosted 1 Jun 2025

About the role

Description At NNG, we focus on providing millions of drivers and enterprises worldwide with reliable navigation software. NNG is seeking a Data Transformation Developer to join our Budapest-based department responsible for managing map content for in-car navigation systems. Do you want to be part of the process that enhances the navigation customer experience by keeping the map content fresh and up-to-date? You are the ideal candidate if you are interested in becoming proficient in developing algorithms to transform SQL databases into device-specific file formats. If you are eager to learn how to apply effective compression and indexing algorithms to efficiently process large amounts of map data, working with cutting-edge data conversion software components, and join a great team, then we are looking for you! What would be your responsibilities?

Develop and maintain our existing robust backend data transformation codebase for 30+ worldwide map providers
Design and develop new data transformation solutions for new map providers
Work on region-wide SQL databases
Support navigation features in specific regions (e.g. Japan, China)
Create complex data structure conversion algorithms and data compression technologies
Optimize application performance
Manage on-premises data transformation pipeline and steps with HTC cluster
Use Data Driven Testing approach and methodologies
Collaborate with team members (software and test automation engineers), cross-functional teams, and architects to deliver high-quality software solutions

The ideal candidate should possess the following Experience:

At least 4 years of experience in C++ development
University degree, Bachelor's (BSc)

Language Skills: Fluent knowledge of Hungarian and an active command of profession-related English Technical Skills:

Knowledge of SQL database systems and RDBMS
Adaptability to an existing codebase of high complexity
User-level knowledge of version control systems (SVN, Git)
Knowledge and experience with CI/CD systems (e.g., JetBrains TeamCity)
Knowledge of agile methodologies and experience in agile software development

Interpersonal Skills: Quality-oriented attitude, attention to detail, high level of independence and proactivity, excellent communication skills, creativity, structured thinking, team player attitudeBravery to speak up candidly, if you see risks, problems or if you want to propose ways to improve the process. Moreover, if you have any of the following

Knowledge of batch and scripting (preferred: Python)
Experience with GIS database formats (e.g. HERE, TomTom)
Experience with GIS tools (e.g. QGIS, MapInfo, ArcGIS, FME)
Experience in software design
Knowledge of voice recognition/text-to-speech technology
Understanding of 3D data structures
Familiarity with compression algorithms
Familiarity with Atlassian products (JIRA, Confluence, Bitbucket)
Experience in high-throughput computing
Practice in data modeling
Knowledge of cloud-based data pipelines

What can we give you in return? International Environment: A dynamic, youthful team in an international setting.Compensation: Competitive salary package with cafeteria. Private health insurance.Office presence: Flexible office presence arrangementsProfessional Development: Access to talent development programs. Trainings and continuous development opportunities.Career Growth: Opportunities for career advancement within a multinational environment.

Apply for this role

Generate a tailored application kit with a matched cover letter, interview prep, and CV highlights — in under 60 seconds.

Apply Now →Generate Application Kit

Free account required — sign up in 30s

Company

NNG LLC

View company profile →

Similar roles

EVERGREEN Data Engineer

Pure Storage

Prague

Head of Data Ops & Systems

deliveryassociates

Ireland

Data Scientist - 4350

CRI Group

Sevilla