Reza Rajan

Software Engineer - Data Systems

Mochi - Co-Founder / Platform Engineer Dec 2022 - Present

Designed and implemented a Python-based Kubernetes sidecar that enabled replica coordination in a highly available Cardano Node deployment.
Authored comprehensive system documentation, providing end-to-end operational guidance, and supporting knowledge continuity.
Migrated infrastructure to Talos Linux, creating a fully declarative provisioning system that supports infrastructure-as-code.
Built Github Actions CI/CD pipelines for feature repositories, with code validation and testing, reducing rollout times from 3+ hours to <15 minutes.
Implemented real-time infrastructure monitoring and alerting with Prometheus and Grafana, cutting incident response time by ~60%.

myKaarma - Data Engineer (Cloud) Jul 2023 - Jan 2024

Automated enterprise report generation and delivery with SLA adherence, using AWS Step Functions and Lambda.
Identified scalability bottlenecks in production data pipelines; presented findings to engineering leadership and initiated efforts to evaluate modernized solutions.
Delivered a proof-of-concept data processing pipeline on AWS using PySpark and Redshift, reducing data processing time by ~70% compared to the production data warehouse.
Designed and contributed to a cloud data lakehouse architecture on AWS to scale analytics and reporting.

myKaarma - Data Engineer (Analytics) Feb 2022 - Jul 2023

Interfaced with external stakeholders to capture and translate reporting requirements into technical specifications.
Developed SQL stored procedures for the MariaDB reporting warehouse, optimizing several with indexing strategies to achieve up to 50% reduction in query execution time.
Integrated multiple operational and external data sources into Power BI, enabling standardized dashboards for internal teams and reducing manual reporting workload for the analytics team.
Collaborated with software engineers to improve data quality checks and streamline ETL processes feeding the reporting warehouse.

Urban Shelter Technologies - Software Engineer Jun 2018 - Jul 2019

Developed the front-end web interface in React for the company’s house listing platform; implemented user authentication and SSO using Firebase.
Optimized event data model in the Firebase document store backend to reduce redundancy and improve query latency.

Amazon - In-Progress

Udacity - 2024

Udacity - 2021

Udacity - 2020

UC Berkeley
2025 - 2025

University of Waterloo
2015 - 2020

Core Competencies: etl/elt, real-time analyics, data lakehouse, data modeling, apache airflow, kafka, flink, aws s3, glue, redshift
Programming Languages: python, golang, sql, bash, nix
Data: postgresql, mariadb, sqlite, redshift, influxdb, cassandra, mongodb, s3, flink, lambda, dbt, airflow, kafka, spark, elasticsearch, etl/elt
Visualization: grafana, power bi, looker studio, plotly
Data Libraries: pandas, scipy, numpy, tensorflow, pyspark
Infrastructure: linux, docker, kubernetes, aws, proxmox, ansible, terraform, opentofu, dbt
GitOps: git, github actions, ci/cd