Build.
Ship.
Scale.
Web apps • APIs • Cloud infrastructure
DK from NexxtApp ↗
CEO of NexxtApp (product company focused on business engagement tools & workflow automation) and independent full-stack engineer. Specializing in architecting production web applications, high-throughput APIs, and scalable cloud infrastructure. Available for international freelance projects, engineering contracts, and dedicated technical retainers.
Web Applications
From idea to production-ready application with modern frontend & robust backend systems.
Accessible structure, SEO-optimized markup, semantic elements & web standards.
Flexbox, CSS Grid, custom properties, smooth transitions & modern layouts.
Modern ES6+ syntax, asynchronous programming, DOM APIs & interactive performance.
Rapid modern styling, design token integration, responsive layouts & clean utility workflows.
12-column responsive layouts, accessible UI components, rapid dashboards & cross-browser styling.
Component-driven single page apps, Vuex/Pinia state management & reactivity.
Robust MVC architecture, Eloquent ORM, secure authentication & background queue systems.
Event-driven non-blocking I/O, serverless backends & microservices.
Scalable server-side architecture, dependency injection & enterprise structure.
APIs & Integrations
Connect products, services and data through reliable APIs.
From Code → Production
Automated, zero-downtime deployments on AWS and Linux servers.
Make Existing Systems Better
Pragmatic engineering to enhance speed, eliminate bugs, and guarantee uptime.
Performance
Faster database queries, Redis caching, and optimized API payloads.
Bug Fixes
Rapid diagnosis of edge cases and permanent production resolutions.
Refactoring
Clean architecture modernization without breaking existing user flows.
Reliability
Linux server tuning, automated monitoring, and 99.9% uptime setups.
Project Journey
Select any milestone to inspect system scope and technologies.
NexxtApp's proprietary booking platform connecting service businesses directly with customers to schedule and manage bookings online. Enables users to reserve appointments while service vendors manage their pipelines and verify customer bookings in real time with instant QR code scanning. Live on the Google Play Store with dedicated customer and vendor applications.
Custom drag-and-drop form builder allowing businesses to create branded questionnaires, surveys, and order forms with ease. Features advanced conditional logic, instant shareable links, real-time submission alerts, and a developer settings tab to stream responses directly into external databases via custom API webhooks.
High-throughput link shortener and dynamic QR code generation platform. Transforms lengthy URLs into clean, branded connections with sub-20ms redirection via Redis, instant vector QR matrix rendering for print and digital campaigns, and granular analytics monitoring click volumes, geography, and device telemetry.
Open-source database migration, seeder, and factory management CLI published on the NPM Registry
by NexxtApp. Empowers Node.js developers to manage schemas and mock test data with expressive
commands like npx nexxt make:migration, npx nexxt migrate, and
npx nexxt seed across PostgreSQL and MySQL databases.
SOFTWARE
DEVELOPER
Have something to build?
Let's turn your idea, backlog or technical problem into a working product.