Dwi Handayani
Full-Stack Developer & Business Systems Consultant
Ready for work
Dwi is ready for their next project!
Thewiworks — Business Productivity & Collaboration Ecosystem
A multi-platform productivity and business management ecosystem designed to help individuals and teams organize projects, tasks, knowledge, and operational workflows in one connected workspace.
Designed and developed independently, covering product strategy, system architecture, full-stack development, UI/UX, and integrations.
Highlights :
- Project, task, and issue management
- Knowledge base, notes, and visual flowcharts
- Multi-workspace organization and role-based access
- Web, Flutter mobile, and Windows application development
- Cross-platform synchronization and integration workflows
Technologies: Laravel, Livewire, PHP, Flutter, REST APIs, SQL
Role: Product Owner, Solution Architect & Full-Stack Developer
Status: Ongoing product development
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Overview
Tumbiora is a modular SaaS platform under development, intended to support different organization types through a shared technical foundation and configurable capabilities. The current focus is reusable website/content management and form-building workflows that can evolve into broader business modules.
Problem & design goal
Organizations frequently need similar foundational capabilities : content pages, media, navigation, data collection, permissions, and workflows; but building a separate application for each client creates unnecessary maintenance and feature drift. Tumbiora explores how these building blocks can be reused without compromising the boundaries between organizations.
Core development areas
- Multi-tenant application structure and tenant-aware data access.
- Modular content management with planned Basic/Advanced capability editions.
- Public pages, media, navigation and SEO-oriented content features.
- Form Builder, form versions, submissions and workflow-oriented processing.
- Tenant-specific module availability and permission-controlled administrative screens.
- Reusable platform architecture designed to allow future industry-specific modules.
My contribution
I worked on product architecture, modular service boundaries, Laravel implementation, shared data structures, permissions, administrator experiences, and plans for safe reuse of capabilities across applications. A primary design constraint is keeping tenant information isolated and avoiding accidental coupling to existing donor applications.
Technology: Laravel, Livewire, PHP, Blade, SQL/PostgreSQL-compatible design.
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Overview
ThewiForge is an AI creation studio built around an extensible product architecture. Its first implemented creation product focuses on professional profile-picture and portrait generation, with a design intended to support additional creative studios over time.
Problem & design goal AI image generation can be difficult for nontechnical users because it requires prompt engineering, managing uploads, waiting for asynchronous jobs, and understanding generation costs. The project
makes that process more approachable through guided inputs, predefined options, clear credit consumption, and a private output gallery.
Key capabilities
- Guided professional image generation using source photos and selectable appearance, framing, outfit, pose, and background options.
- Standard/premium generation paths, configurable AI provider routing, asynchronous job handling, and status tracking.
- Credit-based usage, top-up/payment workflows, and administrative controls.
- Private uploads and galleries, watermarked previews, protected downloads, and ownership-aware media access.
- Web application and Flutter mobile integration through a dedicated API bridge.
- Modular product registry for future creative products; future studios are not presented as completed features.
My contribution : I worked on the product concept, Node.js/Express backend, PostgreSQL data model, AI integration, generation lifecycle, credit and billing rules, access controls, Flutter API connectivity, and deployment/testing workflows. The design addresses both technical concerns - background jobs, protected media, and idempotent requests -and commercial concerns such as per-generation costs and entitlements.
Technology: Node.js, Express, EJS, JavaScript, PostgreSQL, Flutter/Dart, OpenAI Image API, Midtrans (sandbox integration).
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Overview
A professional Assessment Center platform designed to
coordinate assessment sessions across multiple stages, instruments,
participants, assessors, psychologists, and administrators. The product covers the operational journey from preparing an assessment design to running sessions, collecting evidence, coordinating professional review, and preparing results and reports.
Problem & design goal Assessment operations can become difficult to track when schedules, question packages, participant responses, professional judgments, scoring configurations, and reporting are handled in different places. The challenge is to connect these workflows without losing traceability, role separation, or instrument-specific methodology.
Key capabilities
- Session and multi-stage assessment management, scheduling, readiness checks, and participant assignments.
- Question/instrument management, digital test delivery, and proctoring-oriented operations.
- Assessor and psychologist review workspaces, evidence access, professional assignments, and deadlines.
- Scoring and conversion workflows designed around instrument-specific rules, subject to validated methodologies.
- Separate potential and competency assessment pathways where applicable.
- Consensus, review handoffs, permissions, and staged result/report preparation.
- Administrative dashboards, monitoring, Excel exports, and PDF reporting components.
My contribution : I worked on domain modeling, Laravel/Livewire
development, multi-tenant permissions, session workflows, scoring integration boundaries, evidence traceability, review interfaces, data imports/exports, and regression tests. A major engineering consideration is ensuring that technical convenience never overrides valid assessment methodology or professional judgment.
Technology: Laravel, Livewire, PHP, MySQL, Redis, queue workers, Excel export, DomPDF.
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