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/work

An almost complete list of production systems I've actively worked on. Most of these projects were delivered through my outsourcing work at Codexio, with original client names under strict NDA.

Real-Time Public Transport Tracking Platform

2025-present Bulgaria

Full-stack mobile and web application for real-time public transport tracking with GTFS data integration, vehicle tracking, route visualization, and predictive schedules.

Built architecture for mobile and web application with continuous delivery
Integrated GTFS data from multiple transport providers
Implemented real-time vehicle tracking, route visualization, and schedule updates
Designed performance-focused REST endpoints for high-concurrency
Created predictive data contracts for reliable integrations
Provisioned and configured Linux-based environments with Terraform and Ansible
Managed reproducible infrastructure across staging and production
Leveraged Kiro and Cursor AI tools for development optimization
Node.js Nest.js Ionic Angular Terraform PostgreSQL GitLab CI Ansible GTFS Linux

Enterprise Trade Finance Platform

2024-2025 Sweden

Full-stack development unifying three large-scale applications through a shared Angular component library with web components export for cross-platform integration.

Unified three very big applications with shared Angular library
Designed and implemented UI components library with web components export
Migrated Angular applications from Observables to Signals
Set up npm package deployment and Azure infrastructure
Delivered major UX improvement for reconciliation workflows
Optimized session management and performance
Worked with clients and stakeholders in multiple sessions
Leveraged AI tools (Claude Code, Cursor AI) for development
TypeScript Angular C# .NET MSSQL Kendo UI Power BI

Multi-Brand Casino Platform

2022-2024 UK, USA

Full-stack development for a complex legacy system managing 20+ live casino brands across UK and USA markets, with gamification features, fortune wheel integration, and multi-environment coordination.

Maintained 20+ live casino platforms
Implemented gamification and fortune wheel microservice
Optimized database communication, monitoring, and security
Led reskin projects with designers and stakeholders
Coordinated live releases across multiple environments
Java Spring React JavaScript JSP MSSQL Jenkins Grafana

Bulgarian Producers Association Marketplace

2023-2024 Bulgaria

Full-stack e-commerce platform connecting local Bulgarian producers with consumers, featuring shares system, donations, complex packaging and delivery workflows.

Maintained 20+ live casino platforms
Implemented gamification and fortune wheel microservice
Optimized database communication, monitoring, and security
Led reskin projects with designers and stakeholders
Coordinated live releases across multiple environments
Java Spring Angular MySQL NgRx PrimeNG JWT Flyway MapStruct

Cross-Industry Mobile App Platform

2021-2022 Bulgaria

Template-based mobile application infrastructure with modular architecture serving beauty, sports, logistics, and healthcare industries.

Built Ionic-based skeleton leveraging cross-platform advantages
Integrated headless Directus CMS with multiple Node.js plugins
Added Google Maps integration and improved existing modules
Implemented custom theme, push notifications, and API integrations
Integrated Stripe payments and scheduled reminder emails
Led onboarding for new developers on the platform
JavaScript TypeScript Ionic Node.js Directus MySQL

Award-Winning Village Tourist Portal

2021 Bulgaria

Progressive tourist portal for a Bulgarian village with custom component library, server-side rendering, and comprehensive CMS.

Won BAIT (Bulgarian Association for Information Technologies) award for 2024
Built mini custom library for visual elements with design placeholders
Implemented modular architecture with reusable components
Added server-side rendering for improved SEO
Coordinated between junior backend devs, frontend devs, and stakeholders
Developed comprehensive admin panel for content management
TypeScript Angular Java Spring TailwindCSS PostgreSQL

Secure Loan Application Portal

2021-2022 Austria

Angular-based loan system with multiple identity confirmation flows, compliance standards, and fully editable CMS for site administrators.

Implemented static loan application system with different flows
Built identity confirmation and sensitive information handling
Ensured compliance with all regulatory standards
Created fully editable platform with CMS for administrators
Fixed backend bugs including status issues and incorrect URLs
Optimized performance with Nest.js ORM for database management
Passed client penetration testing with full scenario coverage
TypeScript Angular Nest.js Ng2Admin PostgreSQL

Comprehensive HR Management Platform

2020-2021 Ireland

Complex modular HR system with advanced calendar functionality, leave management, and custom NgRx state architecture.

Built comprehensive modular system covering all aspects of HR management
Designed modular architecture with creating modules for leave management
Developed complex calendar section with custom NgRx calendar wrapper
Implemented marking periods, different event types, and snapshot functionality
Played key role in architecture planning with applied suggestions
Mentored junior software developer with efficient task distribution
TypeScript Angular Ionic NgRx

Multi-Platform Marketing Modal SDK

2019-2020 Bulgaria

Comprehensive admin panel and custom SDK for configurable app modals across LCBO, Cordova, and C# websites with template-based system.

Built comprehensive admin panel for modal configuration
Created custom script for LCBO, Cordova, and C# websites
Improved UI/UX in admin panel flow and modal visualization
Implemented comprehensive CDK abstraction for different modal types
Enabled template-based modal creation with responsive designs
Added event handling for button clicks and form submissions
Worked in Agile team with weekly demos
TypeScript Angular JavaScript Node.js SCSS Material UI

Loan Candidate Tracking Platform

2018-2019 Philippines

Web-based loan tracking system with early architecture conventions, API wrapper abstraction, and responsive design for loan-givers.

Enabled loan-givers to track lead candidates via web data
Participated in early system architecture and configuration
Followed architecture conventions and learned from senior developers
Built wrapper abstraction for backend API responses
Transformed backend responses into consistent frontend forms
Implemented responsive design for smooth user experience
TypeScript Angular SCSS Material UI

Multi-Facility Kindergarten Management System

2018-2019 France

Full-stack kindergarten management platform with parent-teacher communication, role-based permissions, and multi-instance support for different facilities.

Built widely used application instanced for different facilities
Adapted UI to custom client requirements
Developed communication system between parents and teachers
Implemented roles and permissions on client side
Added chat improvements and file/personal information handling
Participated in maintenance, new features, and bug fixing
Java JavaScript NativeScript Spring MySQL SCSS

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