/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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