Handika · Full-Stack Software Engineer

I build and maintain software that supports day-to-day operations.

I work across backend services, web and mobile applications, enterprise integrations, and automation.

I focus on practical solutions that fit existing processes and systems, with attention to reliability, security, and maintainability.

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I am a software engineer focused on building and maintaining applications that support real operational work.

My projects span backend services, web applications, mobile tools, enterprise databases, identity, document workflows, infrastructure, automation, and system integration. I often work at the boundary between a new application and an existing business or technology constraint.

I use AI when it improves delivery, diagnostics, automation, or the product itself. The engineering fundamentals—clear boundaries, controlled access, traceability, testing, and maintainable code—remain the foundation.

7+ Years building software (since 2019)

37Documented projects

Backend & Application

Domain logic, workflow applications, APIs, queues, document generation, and maintainable service boundaries.

PHP / Laravel
Node.js / Hono
Python / FastAPI / Flask
REST APIs

Frontend & Web

Operational interfaces and public products designed around clarity, performance, and responsive use.

React / Astro
TypeScript
Blade
HTML / CSS / JavaScript

Mobile

Field and business applications with scanning, offline data, device APIs, and secure backend integration.

Flutter / Dart
Riverpod / Provider
Drift / SQLite
QR, camera, and device flows

Data

Relational data modelling, legacy access, caching, vector search, reporting, and controlled data movement.

Oracle / Db2
PostgreSQL / MySQL
Redis / D1 / SQLite
pgvector / Excel pipelines

Infrastructure

Repeatable deployment and production support through containers, edge platforms, queues, caching, and monitoring.

Docker
Cloudflare Workers / Pages
CI/CD and quality gates
Logging and monitoring

Integration & Identity

Controlled interfaces between applications, enterprise systems, identity providers, files, and external services.

OAuth 2.0 / JWT / SSO
Microsoft Graph
Webhooks / SFTP
Enterprise API gateways

Applied AI & Automation

AI used as a practical engineering capability for computer vision, guarded tooling, and workflow automation.

Face recognition
MCP / agent tooling
Schedulers and background jobs
Document automation

Application ownershipDesigned and maintained workflow applications from domain rules and data models through user-facing delivery.
Enterprise integrationBuilt controlled interfaces between modern applications and Oracle, Db2, Microsoft 365, WMS, and external services.
Backend and API designImplemented authentication, authorization, validation, throttling, caching, queues, audit logs, and failure handling.
Production deliveryContainerized services, configured cloud deployments, and added logging, monitoring, retries, tests, and operational diagnostics.
Cross-platform systemsDelivered web, mobile, automation, document-processing, and computer-vision components as parts of larger workflows.

System designAPI designAuthenticationDatabase design Legacy integrationProduction debuggingContainerization ObservabilityAutomationSecurity considerations

37 projects 9 detailed case studies · 28 archive entries

Selected engineering work

Incident & Trouble Report System — a traceable workflow for reporting, investigation, risk review, corrective actions, evidence, and closure.
Enterprise SSO & Employee Portal — identity, OAuth/JWT, access mapping, Microsoft login, employee synchronization, and shared services.
Material Issue & Return Mobile — a Flutter field application integrating scanning and approvals with enterprise inventory data.
GA Work Order — a traceable approval workflow with documents, APIs, tests, and guarded AI-assisted tooling.
Product Classification & Final Blend — a quality decision workflow connecting laboratory results, specifications, approvals, and formal documents.
Enterprise Integration Gateway — a controlled API layer across enterprise data sources with authentication, throttling, caching, metrics, and audit logging.
Production Schedule — planning, approval, revision, timeline, and signed document workflows.
Hands-Free Face Recognition Attendance — on-device detection, server-side recognition, vector search, and attendance policy controls.
Cloudflare Store Platform — an edge-first storefront and order system using Workers, D1, and a multi-tenant foundation.

Project archive

Additional projects.

Other application, integration, data, and automation work.

05 / Contact

Discuss a system, integration, or product.

For engineering roles, remote opportunities, or project discussions, email is the most direct way to reach me.

handikahevn24@gmail.com

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