Leonard Acha

Lead Data Engineer

EasyLlama

Nov 2025 - Current (1 year)

Lead Data Engineer - Enterprise Data & Analytics Platform

Five Star Senior Living

Feb 2023 - Nov 2025 (2 years 10 months)

As the Lead and Founding Data Analytics Engineer, I set up the data platform for data ingestion, transformation, orchestration, and visualization (reports & dashboards). I’m currently responsible for maintaining core datasets while building a self-service data platform to empower stakeholders to build and maintain their data pipelines and datasets, while incorporating software engineering best practices such as code review, version control, modular and reusable code, CI/CD process for code deployment, etc. when designing and building the data platform and products

Spearheaded a generative AI-powered, self-service analytics platform, architecting a Text-to-SQL engine using Retrieval-Augmented Generation (RAG), fine-tuned open-sou

Senior Data Engineer, Data Platform

BetterUp

Mar 2022 - Feb 2023 (1 year)

The BetterUp experience brings together world-class coaching, AI technology, and behavioral science experts to deliver change at scale — improving personal and organizational resilience, adaptability, well-being, and productivity. The results? Individual transformation meets organizational growth.

Technologies: Ruby on Rails, Postgres, Snowflake, AWS, GCP, Azure, GitHub Actions, Python, SQL, Stitch, Segment, dbt, Airflow, Looker, Airbyte, Terraform

Using a mixture of third-party SaaS products like Stitch, Fivetran, open-source Airbyte, Azure Data Factory, Databricks, and custom Python scripts/apps, designed, built, and maintained data pipelines to ingest data from a variety of data sources through Azure Blob Storage i

Senior Software Engineer - Data Platform & Infrastructure

New Relic

Apr 2020 - Mar 2022 (2 years)

Working on the Growth Data Team, responsible for building tools and infrastructure that increase revenue, reduce churn, and improve customer happiness. Building a data platform on top of the incredible amount of business, usage, and customer data that New Relic holds, as well as delivering valuable insights utilizing that platform to the teams who need it.

Technologies: Kafka, Snowflake, AWS, Databricks - Spark, Docker, Jenkins, Python, Scala, SQL, Fivetran, Segment, dbt, Airflow, Looker

Built data pipelines using Spark and Airflow to ingest data to s3 and subsequently to Redshift.

Using dbt for data transformation and enrichment, built intermediate data sets and subsequently data marts for business consumpt

Senior Data Engineer

Metromile

Jun 2019 - Mar 2020 (10 months)

Impacted by COVID Layoffs

Technologies:
Data Stores: S3, Redshift, Snowflake, EC2, Glue, MySQL, Postgres
Programming Languages: SQL, Python, Scala, Java
Processing/Frameworks: Airflow, Docker, Jenkins, Amazon ECR, Spark/EMR, Databricks,
Kafka, Spark Streaming, Stitch

Metromile is a San Francisco-based car insurance startup that offers pay-per-mile insurance.

To do this, Metromile uses a device that is plugged into the onboard diagnostic (OBD-II) port of the car and transmits the data in real-time for analysis.

As a member of the Analytics team, specifically the Device Analytics team, I build, monitor and maintain the data pipelines - batch and streaming - that ingest, transform

Data Engineer

Omnicom

Dec 2017 - Jun 2019 (1 year 7 months)

Technologies: AWS: S3, Redshift, EMR, EC2, Glue; Python, Scala, Airflow, Spark, Kafka

Designed and built the data lake, data warehouse and data marts from scratch to provide a “single source of truth” on company-wide data

Interfaced with Business Users, Data Analysts, and other stakeholders to gather requirements

Designed data models and built respective schemas, tables, views, queries, stored procedures, and indexes.

Built data pipelines to load data into various data structures

Translated business requirements into data models that were easy to understand and used by different disciplines across the company.

Designed, architected, and supported new and existing data and ETL

Software Engineer

WorldVentures Holdings

Dec 2015 - Dec 2017 (2 years 1 month)

Technologies: SQL Server 2008/2012, MS BI Stack: SSIS, SSRS, SSAS, ASP.NET, C#

Besides working on database tasks, also worked to develop dynamic enterprise applications using C#, ASP.NET MVC, and Web API

Involved in requirements analysis, design, and development

Used AGILE/SCRUM methodology to implement the applications

Performed code reviews, and worked closely with team members to ensure consistency in code standards

Created Web APIs using

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Leonard Acha

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