6+ years · Maryland, US
Lin ChenFull-stack & cloud engineering
I design internal systems by studying the people who have to use them. The measurements below are what happened after.
Senior Software Engineer, Data Integration · DrFirst · since 2025-10
Research data processing time
−95.2 %7 days to8h
Origin AI — internal research tooling
Core Domains
Cloud & Data Infrastructure
Pipelines and storage on AWS — Glue and Step Functions orchestration, secure field data storage, and the analytics platforms that read from them.
- AWS Glue · Step Functions
- Aurora · Redshift · DynamoDB · S3
- ETL & workflow orchestration
Full-Stack Product Engineering
Interfaces and services built from the workflows of the people who use them — internal research tooling, a serverless inference pipeline, a landlord-facing platform.
- React · Next.js · TypeScript
- Flask · FastAPI · Node.js
- Docker · AWS Lambda inference
Delivery & Developer Tooling
The unglamorous layer: dual environments, pipelines that run themselves, and hooks that catch problems before review does.
- Jenkins · GitHub Actions
- Jest & CI groundwork
- Git hooks across departments
Technology
Cloud & infrastructure
Data engineering
Database & storage
Development
DataOps / DevOps
Experience
Senior Software Engineer, Data Integration
2025-10 → presentDrFirst · Remote
- Build data pipelines on AWS using Glue scripts orchestrated by Step Functions.
- Cut pipeline compute time from over 2 hours to 20–30 minutes.
- Optimised QuickSight dashboard performance from 3 hours to 40–50 minutes.
- Beyond compute efficiency, the shorter runs cut the management overhead of operating the pipelines.
Senior Software Engineer
2025-02 → 2025-10Origin AI · Rockville, MD
- Spearheaded batch processing on AI servers: 41 % inference speed improvement, 52 % CPU reduction, 63 % cost reduction.
- Designed and implemented testing systems evaluating and monitoring AI server performance at each step.
Lead Software Engineer, Web & Cloud
2022-10 → 2025-02Origin AI · Rockville, MD
- Drove user research to align internal tooling with researcher needs, grounding system design in real workflows.
- Architected a scalable cloud system for secure field data storage, adopted as the standard across research teams.
- Led design of a cloud-native analytics platform on AWS with MATLAB integration — 95 % reduction in data parsing time.
- Designed a cloud backup system and migration workflow for offline research data, reducing risk of local failure.
- Established Dev and Prod environments with Jenkins pipelines, cutting manual intervention and post-deployment issues.
- Integrated Jest into a Next.js application, laying the groundwork for CI automation and shorter QA cycles.
- Introduced Git hooks across departments to automate linting and formatting, improving CI pass rates.
Software Engineer
2021-02 → 2022-10Origin AI · Rockville, MD
- Built UI features for an indoor tracking beta app in Python and Kivy, including pin-drop and control panel tools.
- Led UI/UX design for the Hex subscription service across US and Japan markets, with localised flows and onboarding.
- Managed cross-border app development with the Vietnam team under agile workflows.
- Developed an MQTT-based motion data pipeline automating ground-truth collection and removing manual input.
- Built a product demo with the Product Manager to accelerate partner engagement.
Software Engineer
2019-08 → 2020-09EAB
- Contributed to and optimised shared Polymer components used across all company products.
- Built automated accessibility test suites with Cypress and Pa11y, improving WCAG compliance.
- Built a centralised Storybook system documenting reusable components.
Selected Work
All case studies2025-10 → present
Data Integration
DrFirst
Data pipelines on AWS for a healthcare technology platform — Glue scripts orchestrated by Step Functions — and the QuickSight dashboards they feed.
Read the case study2021-02 → 2025-10
Research Data Platform
Origin AI
Internal cloud systems for a research organisation: secure field data storage, a cloud-native analytics platform, and the batch processing layer behind the AI servers.
Read the case study2023
Artifact Recognition Platform
DingAI · Museums
An AI image classification platform identifying museum artifacts, built with two co-founders and external partners.
Read the case study2024
Property Management Application
Landlord & tenant workflows
A full-stack platform for landlords managing rental property, tenants, and shared utility cost.
Read the case studyQualifications
B.S. Computer Science
University of Maryland, College Park
2019
- AWS Certified Solutions Architect — Associate
- AWS Certified Developer — Associate
- AWS Certified Cloud Practitioner
- AWS Certified AI Practitioner
- Scrum Master Certified
Open to a conversation
Senior Software Engineer, Data Integration at DrFirst, based in Maryland, US.