Waleed Barakat

Tech Stack

Featured Projects

Loadout

Local-first, E2E-encrypted vault for your agent setup: skills, memory, and secrets synced across Claude Code, Cursor, Codex, and every agent tool you use.

ASRE

Admission Signal Reliability Engine: a healthcare data reliability layer that stitches ADT, claims, authorization, and eligibility signals into one trusted, deduplicated admission events table with confidence scores.

Experience

1. Co-Founder · bzar.app

   2025 – Present

   Remote

   Co-founding bzar.app, owning product, data, and the AI stack end to end, from prototype to production.

2. Senior Data Scientist · Strive Health

   Sep 2024 – Present

   Remote

   Trained XGBoost and AutoML models that predict 30-day hospitalization risk for 120k CKD patients, driving an 18% drop in unplanned admissions.

   • ·Built an end-to-end MLOps pipeline (dbt feature marts in Redshift → SageMaker → Lambda scoring), shrinking model retrain time from 2 weeks to 2 hours

3. Data Engineer · USDA

   Aug 2023 – Sep 2024

   Remote

   Optimized 30+ ETL pipelines in Python, SQL, and cron, cutting data processing time 30% while holding 99.9% uptime across critical systems.

   • ·Automated Tableau reporting, halving manual report generation time

4. Senior Data Scientist · Appian

   Aug 2022 – Jul 2024

   McLean, VA

   Deployed a churn-prediction model on GCP (BigQuery + PostgreSQL) that drove a $10M reduction in customer churn, surfaced to execs through live Tableau dashboards.

5. Data Scientist · Henry M. Jackson Foundation

   Dec 2019 – Aug 2022

   Annandale, VA

   Built mass-spec and RNA-Seq pipelines in R (+40% processing efficiency) and RShiny QC dashboards (−25% instrument downtime), contributing to four peer-reviewed publications.

Publications

• Histology-resolved proteomics reveals distinct tumor and stromal profiles in low- and high-grade prostate cancer2025

  Clinical Proteomics

  Hunt AL, Barakat W, Makohon-Moore SC, Hood BL, Conrads KA, Wilson KN, Abulez T, Ogata J, Pienta KJ, Lotan TL, Mani H, Trump DL, Bateman NW, Conrads TP

• Mapping three-dimensional intratumor proteomic heterogeneity in uterine serous carcinoma by multiregion microsampling2024

  Clinical Proteomics

  Hunt AL, Bateman NW, Barakat W, Makohon-Moore SC, Abulez T, Driscoll JA, Schaaf JP, Hood BL, Conrads KA, Zhou M, Calvert V, Pierobon M, Loffredo J, Wilson KN, Litzi TJ, Teng PN, Oliver J, Mitchell D, Gist G, Rojas C, Blanton B, Darcy KM, Rao UNM, Petricoin EF, Phippen NT, Maxwell GL, Conrads TP

• In situ profiling reveals metabolic alterations in the tumor microenvironment of ovarian cancer after chemotherapy2023

  npj Precision Oncology

  Corvigno S, Badal S, Spradlin ML, Keating M, Pereira I, Stur E, Bayraktar E, Foster KI, Bateman NW, Barakat W, Darcy KM, Conrads TP, Maxwell GL, Lorenzi PL, Lutgendorf SK, Wen Y, Zhao L, Thaker PH, Goodheart MJ, Liu J, Fleming N, Lee S, Eberlin LS, Sood AK

• Brain proteomic atlas of alcohol use disorder in adult males2023

  Translational Psychiatry

  Teng PN, Barakat W, Tran SM, Tran ZM, Bateman NW, Conrads KA, Wilson KN, Oliver J, Gist G, Hood BL, Zhou M, Maxwell GL, Leggio L, Conrads TP, Lee MR

• Classification of high-grade serous ovarian cancer using tumor morphologic characteristics2022

  JAMA Network Open

  Handley KF, Sims TT, Bateman NW, Glassman D, Foster KI, Lee S, Yao J, Yao H, Fellman BM, Liu J, Lu Z, Conrads KA, Hood BL, Barakat W, Zhao L, Zhang J, Westin SN, Celestino J, Rangel KM, Badal S, Pereira I, Ram PT, Maxwell GL, Eberlin LS, Futreal PA, Bast RC, Fleming ND, Conrads TP, Sood AK

• Extensive three-dimensional intratumor proteomic heterogeneity revealed by multiregion sampling in high-grade serous ovarian tumor specimens2021

  iScience

  Hunt AL, Bateman NW, Barakat W, Makohon-Moore S, Hood BL, Conrads KA, Zhou M, Calvert V, Pierobon M, Loffredo J, Litzi TJ, Oliver J, Mitchell D, Gist G, Rojas C, Blanton B, Robinson EL, Odunsi K, Sood AK, Maxwell GL, Darcy KM, Conrads TP

Let's Work Together