- Solely architected, built, and shipped a production AI diagnostic application for HVAC technicians across iOS (Mar 2026) and Android (Jul 2026), attracting 30โ50 new technicians per week organically with zero paid acquisition.
- Embedded directly with field technicians to translate diagnostic reasoning into an AI-assisted system; evolved an initial Generator โ Reviewer โ Formatter LLM pipeline into deterministic state-machine decision trees with explicit, verifiable Pass/Fail criteria.
- Engineered the full web surface: built a high-performance marketing homepage with Astro for fast static delivery and an internal team-managed operational portal with React for collaborative workflows.
- Deployed scheduled autonomous AI agents with custom skills to continuously audit, generate, and optimize programmatic SEO content and site search discoverability.
- Built scheduled agentic bug-finder and automated remediation workflows using custom skills to scan telemetry, reproduce field issues, and draft fixes; implemented skill-driven automated Android publishing pipelines.
- Built an automated prompt regression test suite run on every pipeline change, validating safety gates, edge-case diagnoses, and JSON schema correctness before production deployment.
- Leveraged Sentry and Maestro E2E automation as a primary production telemetry loop; traced app crashes, broken flows, and silent drop-offs to specific logic paths and fed real-world patterns back into diagnostic logic and prompt evaluations.
Huajun Chen
Pragmatic systems builder with 15+ years of production experience. Turning complex domain workflows into reliable apps โ from migrating critical enterprise databases with zero downtime to shipping AI-driven mobile products backed by automated evaluation gates.
Software and applied AI engineer with 15+ years building and deploying mission-critical systems across government, enterprise, and startup environments. Experienced embedding directly with field technicians and domain experts, translating unstructured real-world problems into robust, working software. Most recently founded, built, and shipped ACLogics end-to-end โ architecting LLM diagnostic engines, regression evaluation test suites, mobile applications on iOS & Android, and observed-telemetry feedback loops.
- Lead practical AI adoption across the GIS team, identifying high-leverage workflows and empowering non-programmers to build their own automations (including an AI-assisted macro that eliminated recurring monthly manual data entry).
- Extended automation upstream to the data-producing department, removing redundant forwarding and handoffs while slashing turnaround time.
- Developed a proof-of-concept AI agent to audit and validate municipal spatial address data, automating discrepancy detection and anomaly resolution for an address clean-up project.
- Delivered a production restaurant inspection application in one week: used AI to navigate a 200+ table undocumented legacy SQL database, accelerating the complete delivery cycle from schema discovery and data validation to automated ArcGIS map-service deployment and an HTML frontend.
- Embedded with client engineering as a domain specialist, translating complex commercial insurance requirements into production systems across React, TypeScript, Python, Azure, and ArcGIS Enterprise.
- Led development of a React/TypeScript geospatial curation platform for commercial property insurance, integrating ESRI JavaScript API, Google Street View, Vexcel oblique imagery, and Turf.js to help risk analysts verify property boundaries and evaluate exposure.
- Engineered a 4-stage Python property-valuation actuarial pipeline spanning raw data ingestion/cleansing, multi-source API enrichment, spatial calculation, and automated reporting; deployed to Azure with 90%+ test coverage.
- Architected an automated ESRI deployment synchronization engine using Python to digest exported XML and EPK configuration packages, automating geodatabase schemas, feature services, web maps, and application lifecycle updates across environments.
- Prototyped AI geospatial object-detection workflows using SAM-GEO foundation models to evaluate automating roof and structural boundary extraction from high-resolution imagery.
- Enforced production software standards and governance: implemented Docker containerized development environments, Azure DevOps CI/CD pipelines, and resolved security vulnerabilities identified via Veracode SAST scanners.
- Architected, maintained, and managed enterprise GIS infrastructure, including ArcGIS Server, Portal, ArcGIS Hub, and GeoEvent Server across Oracle and Microsoft SQL Server databases.
- Planned and executed a full enterprise GIS database migration from Oracle to Microsoft SQL Server with zero service downtime, administering database schemas, user roles, and security policies.
- Built a citizen-facing single-page web application querying city services via ArcGIS REST APIs and developed a real-time AVL (Automatic Vehicle Location) web application displaying live municipal vehicle tracking and historical query/export tools.
- Engineered a Python data integration pipeline synchronizing municipal traffic databases with Waze real-time feeds to automate road closure updates and incident response.
- Automated spatial joining and analysis of municipal crime incidents with neighborhood geographic boundaries, generating scheduled automated intelligence reports.
- Provided mission-critical technical operations and emergency GIS support for Emergency Management during major crises, including the 2015 Christmas Tornadoes and the 2020 pandemic response.
- Designed and deployed a custom VB.NET inspection workload scheduler for field crews, streamlining dispatching workflows and enabling managers to optimize team supervision.
- Developed a specialized .NET toolbox for the municipal Water Quality team to record environmental laboratory sample data, validate test parameters, and automate compliance reporting.
- Built automated Python scripts to trigger and dispatch formal Notice of Violation emails directly from spatial violation records.
- Authored custom automation tools using ArcObjects, Python, and VB.NET, significantly increasing daily operational data processing speed and workflow stability across departments.
- Delivered technical support, documentation, and GIS training to operational staff with diverse technical backgrounds.
- North Central Texas Council of Governments (NCTCOG) (Mar 2009 โ Jul 2009): Created 9-1-1 ArcSDE spatial address feature classes and datasets from scratch across two regional counties, synthesizing satellite imagery, planning department drafts, and on-site field verifications for emergency dispatch accuracy.
- The University of Texas at Dallas (Jun 2008 โ Dec 2008): Developed 3D feature extraction and classification tools in ArcGIS Desktop using ArcObjects to characterize and isolate buildings, tree canopies, and power line corridors from aerial LiDAR point cloud data.