Senior Data Engineer

IDT; Curitiba; On-site; BRL 240,000 - 320,000; Full time

Benefits offered by this job

Remote work opportunity

B2B employment

Long-term growth

Quality hardware

Training & conferences

Referral program

English classes

Job summary

IDT is seeking a Senior Data Engineer to join the BI team and lead end-to-end data pipeline design, architecture, and maintenance powering our warehouse, LLM-driven apps, and AI BI.

Responsibilities include building scalable pipelines, semantic data handling for advanced search, and RAG-enabled analytics. You will collaborate with stakeholders, document processes, and stay current with MLOps and LLM trends.

Qualifications

• 8+ years as a Data Engineer with strong Python proficiency.
• Hands-on with Spark, Hadoop, Kafka for distributed processing.
• Experience building complex data pipelines from RDBMS/JSON/API/flat files.
• Strong SQL/PLSQL, BI, and data warehouse methodologies with DB systems and cloud services.
• Unix/Linux/Windows basics and Agile methodologies.
• Version control experience in distributed teams.

Responsibilities

• Design, build, and maintain scalable data pipelines for ingestion, transformation, and delivery to feature stores and training workflows.
• Develop workflows to extract, store, and retrieve semantic representations for advanced search and retrieval.
• Architect lightweight analytics and dashboards with natural language query capabilities and AI insights.
• Define and execute prompt engineering, orchestration, and model tuning for conversational interfaces.
• Oversee vector data stores and efficient indexing for RAG workflows.
• Collaborate with data stakeholders to translate requirements into scalable solutions.
• Create and maintain comprehensive data process and deployment documentation.
• Stay informed on emerging data engineering, MLOps, and LLM practices.

Skills

Senior Data Engineer

Python

Big data

Spark

Hadoop

Kafka

SQL/PLSQL

BI / Data warehouse

Unix/Linux

Git / version control

English communication

Tools

Snowflake/Redshift

DataStax AstraDB

LangChain / LlamaIndex

Hugging Face Transformers

Job description

This is a full-time opportunity for aSeniorData Engineer from LATAM.

Only accepting applicants from LATAM. In-person verification will be conducted.

We are looking for a senior Data Engineer to join our BI team and take an active role in designing, building, and maintaining the end-to-end data pipeline, architecture and design that powers our warehouse, LLM-driven applications, and AI-based BI.

Responsibilities:

• Design, develop, and maintain scalable data pipelines to support ingestion, transformation, and delivery into centralized feature stores, model-training workflows, and real-time inference services.
• Build and optimize workflows for extracting, storing, and retrieving semantic representations of unstructured data to enable advanced search and retrieval patterns.
• Architect and implement lightweight analytics and dashboarding solutions that deliver natural language query experience and AI-backed insights.
• Define and execute processes for managing prompt engineering techniques, orchestration flows, and model fine-tuning routines to power conversational interfaces.
• Oversee vector data stores and develop efficient indexing methodologies to support retrieval-augmented generation (RAG) workflows.
• Partner with data stakeholders to gather requirements for language-model initiatives and translate into scalable solutions.
• Create and maintain comprehensive documentation for all data processes, workflows and model deployment routines.
• Should be willing to stay informed and learn emerging methodologies in data engineering, MLOps and LLM operations.

Requirements:

• 8+ years of experience as a Data Engineer.
• Demonstrated experience in utilizing Python for data engineering tasks, including transformation, advanced data manipulation, and large-scale data processing.
• Hands-on experience with big data technologies including Apache Spark, Hadoop, and Kafka for distributed processing and real-time data ingestion.
• Experience designing complex data pipelines extracting data from RDBMS, JSON, API, and Flat file sources.
• Demonstrated skills in SQL and PLSQL programming, with advanced mastery in Business Intelligence and data warehouse methodologies, along with hands-on experience in one or more relational database systems and cloud-based database services such as Snowflake/Redshift
• Understanding of software engineering principles and skills working on Unix/Linux/Windows Operating systems, and experience with Agile methodologies.
• Proficiency in version control systems, with experience in managing code repositories, branching, merging, and collaborating within a distributed development environment.
• Interest in business operations and comprehensive understanding of how robust BI systems drive corporate profitability by enablingdata-driven decision-making and strategic insights.
• Effective oral and written English communication skills with BI team and user community.

Pluses

• Experience with vector databases such as DataStax AstraDB, and developing LLM-powered applications using popular open source frameworks like LangChain and LlamaIndex–including prompt engineering, retrieval-augmented generation (RAG), and orchestration of intelligent workflows.
• Familiarity with evaluating and integrating open-source LLM frameworks–such as Hugging Face Transformers/LLaMA-4 across end-to-end workflows, including fine-tuning and inference optimization.
• Knowledge of MLOps tooling and CI/CD pipelines to manage model versioning and automated deployments.

What we offer:

• Remote work opportunity!
• B2B Employment ($, gross).
• Stable job with long-term growth perspective with talented people around.
• Really good hardware.
• Great learning and growth opportunities.
• Compensation for professional training, seminars, and conferences.
• Referral program – get rewarded for helping us grow the team with talented people.
• Company-supported English classes to enhance your professional growth.

IDT Corporation is a global communications company founded in 1990 and headquartered in Newark, New Jersey. We are industry leaders in prepaid communication and payment services and one of the largest international voice carriers. We are listed on the NYSE, employ over 1800 people across 20 countries, and have over $1.5 billion in revenues.

IDT is not ”another big IT corporation”— we encourage and support in-house entrepreneurs in developing their ideas into business actions.

Our flagship brand, BOSS Revolution offers Money Transfer, International Calling, and Mobile Top-Up services and supports IDT’s mission of enabling people to keep in touch and share resources with family and friends worldwide.

In-person verification will be conducted. Fake profiles will be reported.

Only accepting applicants from LATAM.