Data Engineer

Description

Job Summary: We are seeking a senior hands-on professional to maintain and evolve OSS-oriented applications within a critical corporate telecommunications environment. Key Highlights: 1. Experience working in a critical corporate telecommunications environment 2. Strong expertise in ETL and system integration 3. Maintenance and evolution of OSS-oriented applications We are looking for a senior professional to work in a critical corporate telecommunications environment, with strong experience in ETL, system integration, and evolutionary maintenance of OSS-oriented applications. This position targets professionals with a hands\-on profile, analytical capability, and proven technical seniority to perform maintenance, evolution, and development of new functionalities in applications responsible for processing, parsing, and integrating data originating from OSS platforms. We seek someone capable of technically understanding the application ecosystem, analyzing problems in a structured manner, and directly implementing solutions. **Requirements:** Main Responsibilities Development and maintenance of ETL processes Evolution and maintenance of applications integrated into the OSS ecosystem Analysis, processing, and integration of data originating from telecommunications platforms Development of new features and improvements to existing systems Integration among databases, APIs, and corporate systems SQL query tuning and optimization Technical support for application analysis and evolution Technical documentation and support for internal teams Interaction with technical and business areas Mandatory Requirements Experience in critical corporate environments, preferably in telecommunications Knowledge and experience working in OSS environments Strong experience with ETL and data integration Practical experience with Informatica Cloud (IICS) Advanced SQL and performance tuning Experience with Oracle and MongoDB Experience with API integration **Application development and maintenance using:** Java, JavaScript, XML Capability to perform evolutionary maintenance and technical analysis of legacy systems Analytical, consultative, and hands\-on profile Excellent verbal and written communication skills Ability to work autonomously from a technical standpoint Desirable Qualifications Knowledge of React, Angular, and jQuery Experience in parsing and handling telecommunications data Experience with AI tools applied to analysis and maintenance of existing code **Experience with:** Claude, Cursor AI, Windsurf, Kiro, GitHub Copilot Experience in AI-assisted refactoring and modernization Knowledge of process automation Benefits To be discussed.