# Jeffrey Alhassan

> Software Engineer II @ Klaviyo

Location: Greater Boston, United States
Profile: https://flows.cv/jeffreyalhassan

As a Software Engineer with a strong foundation in data science and full-stack development, I thrive at the intersection of data, infrastructure, and clean code. With a B.S. in Data Science from Northeastern University and hands-on experience at companies like UKG, Signify, and Dell EMC, I’ve led projects that drive automation, enhance data security, and streamline engineering workflows.

Let’s connect!

## Work Experience
### Software Engineer 2 @ Klaviyo
Jan 2026 – Present | Boston, MA

### Software Engineer @ Returnalyze
Jan 2025 – Jan 2026 | Burlington, MA
- Built a React app to streamline customer onboarding and standardize data ingestion
- Designed and optimized large-scale data pipelines using Python, SQL, and dbt
- Reduced Snowflake compute costs by transitioning dbt pipelines to incremental loading
- Applied prompt engineering to automate summaries of data transformations and pipeline lineage

### Software Engineer @ UKG
Jan 2022 – Jan 2025 | Lowell, Massachusetts, United States
- Developed a low-latency data synchronization framework using Python and GCP Datastream
- Enhanced pipeline notification system using Python and Pub/Sub to deliver real-time alerts
- Built a Python script to enhance masked data, allowing for a more secure dev environment 
- Built a nightly pipeline to automate summarized data for cost and memory optimization 
- Diagnosed and resolved critical pipeline failures by performing in-depth root cause analysis

### Web Developer co-op @ Signify
Jan 2021 – Jan 2021 | Burlington, Massachusetts, United States
- Designed and developed an Angular/TypeScript web app to automate PDF spec sheet generation
- Implemented secure login with role-based access control and custom UI tool access 
- collaborated with designers to standardize product imagery, dimensions and responsiveness 
- Maintained and improved a customer feedback web page with direct support contact

### Software Engineer co-op :  Product & Application Security @ Dell Technologies
Jan 2020 – Jan 2020 | Hopkinton, MA
- Developed an web app that dynamically pulled in-progress Jira stories using Angular and Node.js 
- Built a Python-based tool that calculated the probability of false positives in data quality tests

### Data Engineer co-op @ Curriculum Associates
Jan 2019 – Jan 2019 | Billerica, MA
- Improved ETL’s performance by redesigning pipelines & sql scripts 
- Developed in Scala a synchronizing tool that transferred config-files from one ETL pipeline to another
- Created pipeline for collecting student’s login information for the data analytics team

### Software Engineer Intern @ Optum
Jan 2019 – Jan 2019 | Greater Boston Area
- Developed an React intake page that automated user eligibility for internal testing tool
- Wrote SQL stored procedures that reduced stakeholder meeting times through questionnaire
- Developed a web app that visualized volunteer hours and quantified lives impacted
- Collaborated in a Scrum team of five


## Education
### Bachelor's degree in Data Science
Northeastern University


## Contact & Social
- LinkedIn: https://linkedin.com/in/jeffrey-alhassan-293985125

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Source: https://flows.cv/jeffreyalhassan
JSON Resume: https://flows.cv/jeffreyalhassan/resume.json
Last updated: 2026-03-28