Leonardo Reis

DevOps Engineer

New York, New York, United States3 yrs 3 mos experience

Most Likely To Switch

Key Highlights

Designed scalable data pipelines for HRIS systems.
Delivered decision-ready dashboards reducing reporting latency.
Led end-to-end mobile app project focused on sustainability.

Stackforce AI infers this person is a Data Engineer with strong mobile development experience in SaaS environments.

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Skills

Core Skills

Data EngineeringData ModelingApi DevelopmentMobile DevelopmentIos DevelopmentSoftware Engineering

Other Skills

DatabasesSQLEnglishData VisualizationPythonData LakesData warehouseExtract, Transform, Load (ETL)PostgresFivetrandbtadvanced SQLAWSRedshiftLambda

About

I'm a versatile technology professional with ~2 years of experience as a Data Engineer and over 2 years as a Software Engineer. Graduated from Unicamp, Brazil’s top Computer Engineering university, with exposure to multiple technology areas such as game development, mobile/web development, cybersecurity, and machine learning. These experiences have built a strong foundation in problem-solving and self-learning, enabling me to quickly master new technologies and tackle challenges. Recently, I decided to focus my career on data, as it connects me to business challenges and drives my motivation to deliver valuable solutions. My recent work experiences have shown that I perform best in autonomous environments and have helped me strengthen stakeholder communication skills and lead end-to-end project development efficiently.

Experience

3 yrs 3 mos

Total Experience

11 mos

Average Tenure

1 yr 2 mos

Current Experience

Flatiron data & ai

Analytics Engineer

Mar 2025 – Present · 1 yr 2 mos · New York, United States · Remote

Impact & Results
Designed and maintained the end-to-end ELT stack (Postgres → Fivetran → dbt), transforming raw sources into clean, documented, and trusted models.
Scaled the data warehouse with SCD2 history, partitioned incremental models, and idempotent backfills, improving performance and maintainability.
Built table-level auditing (tracking inserts/updates/deletes) that proactively flagged system issues before they impacted stakeholders.
Delivered decision-ready Metabase dashboards for operations, product, and leadership, reducing dependency on the data team and accelerating decision-making.
Reduced reporting latency and manual work, increasing reliability and overall adoption of data assets across teams.
Key Learnings
Specialized in business-oriented data modeling, translating strategic needs into resilient pipelines.
Strengthened skills in data governance with clear documentation, testing, and CI/CD enforcement in dbt.
Gained experience in building trust with non-technical stakeholders by delivering metrics that were auditable, transparent, and scalable.
Core Tools
Databases & ELT: Postgres, Fivetran, dbt
Modeling & Quality: dbt tests, snapshots, incremental models, SCD2
Visualization & Metrics: Metabase, advanced SQL
Engineering Practices: GitHub Actions, CI/CD, documentation

Data ModelingDatabasesSQLEnglishData VisualizationPython+4

Vtex

Data Engineer

Feb 2024 – Mar 2025 · 1 yr 1 mo · São Paulo, São Paulo, Brazil · Remote

Data Pipelines & Automation:
Designed and implemented data ELT for our HRIS systems, building end-to-end pipelines. Automated data ingestion into our Data Lake and Data Warehouse. Transformed raw data into final reports and dashboards, providing invaluable business insights. Enhanced observability by creating monitoring systems for these automations. Ensured maintainability by documenting processes, data tables, and applying unit tests.
Tools: Redshift, Lambda, Kinesis, S3, EventBridge, QuickSight, Airflow.
Systems Integration:
Co-developed a scalable HRIS integration architecture for data consistency across HR systems. Led a technical research on Pulumi's IaC, establishing the foundation for the integration by defining best practices for project structure, development, and CI/CD. Also implemented the project's core module.
Tools: API Gateway, Lambda, DynamoDB, and SQS.
Technical Leadership & Process Improvement:
Mentored the team on coding standards, best practices, and software design principles. Designed and led technical training sessions, enhancing team skills and efficiency. Implemented a structured DevOps approach, introducing separate Production and Development environments to improve data integrity and system stability.

API DevelopmentData ModelingAWSDatabasesSQLEnglish+6

Profusion

iOS Developer

Dec 2022 – Jul 2023 · 7 mos · Campinas, São Paulo, Brazil

Worked as an iOS Front-End Software Engineer in a software house, contributing to the development of the core mobile application framework that served as the foundation for all of the company's iOS applications. Developed in Swift using the Scrum agile methodology, gaining experience in time management and cross-team communication.
This experience provided me with a strong foundation in contributing to large projects, applying robust version control practices in GitHub and clean code principles.

TypeScriptiOSSwift (Programming Language)GitHubUIKitClean Code+3

Vulcanet systems & engineering

Software Engineer

May 2022 – Nov 2022 · 6 mos · São Paulo, Brazil

Worked as a Back-End Software Engineer in a telephony team, developing new features, maintaining services, and managing infrastructure tasks. Gained experience with coding standards and Scrum sprints.

Clean CodePythonSoftware Engineering

Conpec

3 roles

Project Manager

Jul 2020 – Mar 2021 · 8 mos

Worked as a Product Manager at Unicamp’s Junior Company, a software house. Led a team in a web front-end project, developing an online platform for professors to manage their classes and students. Applied Scrum methodology, planned and distributed tasks across sprints, and maintained clear communication with the client. Ensured timely delivery of a high-quality product, aligning with project expectations.

Product Owner

Jul 2020 – Mar 2021 · 8 mos

Worked as a Product Owner at Unicamp’s Junior Company, a software house. Led an end-to-end mobile app project focused on reducing food waste. In the pre-project phase, prospected clients, negotiated terms, and secured contracts. During development, maintained constant communication with clients, ensuring their needs were effectively conveyed to the development team.

Trainee

Mar 2020 – Jul 2020 · 4 mos

Secomp - semana acadêmica de computação da unicamp

Infrastructure Advisor

Mar 2020 – Sep 2020 · 6 mos · Campinas, São Paulo, Brazil

At SECOMP 2020 (Online edition) organization, acted prospecting speakers, getting sponsors, reformulating the event’s website, live streaming on Youtube and structuring the Hackathon and other activities.