Alexander MarfelFrontend Tech Lead / Team Lead
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Projects

A curated list of work — focused on delivery quality, performance, and clean UX.

CI/CD: Single Build → Promote
2024–Present
A release process that promotes build artifacts across environments/regions without rebuilding.
CI/CDDockerRelease EngineeringGitHub Actions
Frontend Platform (UI Kit + Packages)
2024–Present
A shared frontend platform: internal UI kit, core packages, API SDK, and unified tooling.
ReactTypeScriptStorybookDesign System
Internal UI Kit (React + Storybook)
2024–Present
An internal UI kit with design tokens, theming via CSS variables, and Storybook docs.
ReactTypeScriptStorybookDesign System
Tooling Config Packages (ESLint/Prettier/Hooks)
2024–Present
Shared config packages to standardize lint/format/commit rules and TS configs across repos.
ESLintPrettiercommitlintHusky
TypeScript API SDK (Shared Contract)
2024–Present
A shared TypeScript SDK that keeps API usage consistent across multiple apps.
TypeScriptSDKAxiosCI/CD
Vilavi Web Cabinet (Vite + React)
2024–Present
A Vite-based user cabinet with clean core layers (providers/router/i18n) and a stable delivery baseline.
ViteReactTypeScriptRedux Toolkit
Vilavi Web Shop (Next.js App Router)
2024–Present
E-commerce web shop built on App Router with i18n, forms, and disciplined delivery for frequent releases.
Next.jsReactTypeScripti18n
Mobile Shop Dev Flow (React Native)
2024–2025
React Native project support focused on developer experience and reproducible setup.
React NativeTypeScriptiOSAndroid
Photon Protocol Web (Ops Dashboard)
2024
A data-heavy ops dashboard with URL-synced filters and performance tuning for table screens.
ReactTypeScriptRedux ToolkitRedux-Saga
Borpa dApp (EVM + Solana)
2023–2024
A multichain dApp with transaction UX, wallet state handling, and reliability improvements.
Next.jsReactTypeScriptWeb3
Monitoring System Frontend
2023–2024
A monitoring system frontend built from scratch with realtime updates, clear architecture, and delivery tooling.
ReactTypeScriptRedux ToolkitRedux-Saga
Trillion dApp (Liquidity Pools UI)
2023–2024
Liquidity pool UI with context-aware wallet connection flows and build stability fixes.
Next.jsReactTypeScriptWeb3
Web3 dApp Integrations (EVM + Solana)
2023–2024
Wallet flows and on-chain interactions with a focus on correctness and robust UX states.
Next.jsReactTypeScriptWeb3
3D Visualization Builder (Three.js)
2022–2023
Interactive 3D scenes for product assembly and warehouse object tracking.
ReactTypeScriptThree.jsRedux-Saga
Backend Contracts & API Collaboration
2022
API contract and backend architecture collaboration to keep FE/BE integration predictable.
API ContractsBackendTypeScriptREST
Rarible SDK Integration Work
2022
Wallet connector integration work to stabilize Web3 user journeys.
Web3WalletsTypeScriptSDK
Watermarked App Frontend
2022
Frontend features and UX stability improvements in a React/TypeScript codebase.
ReactTypeScriptRedux-SagaSASS
Web3 Marketplace Frontend
2022
A modular React/TypeScript app with wallet integrations and a production-focused build setup.
ReactTypeScriptWeb3Redux-Saga
Broker Client Cabinet (Realtime)
2021–2022
A data-heavy client cabinet with REST + WebSocket integrations and realtime UX.
ReactTypeScriptRedux-SagaWebSocket
Client Portal (CRA + TS)
2020–2021
A client personal area with auth/profile/security flows and a strong DX baseline.
ReactTypeScriptRedux-Sagaredux-persist
Koshelek Service: Account
2020–2021
User profile/security flows as a micro-frontend service within an SSR platform.
Vue 2SSRMicro-frontendsVuex
Koshelek Service: Advertisement
2020–2021
Service-level UI for advertisement flows within a micro-frontends wallet product.
Vue 2Micro-frontendsVuexSSR
Koshelek Service: Advertisement Editor
2020–2021
Editing workflows and UI logic for advertisement management within the platform.
Vue 2Micro-frontendsSSRVuex
Koshelek Service: P2P
2020–2021
P2P flows as a service-level frontend in a micro-frontends wallet platform.
Vue 2Micro-frontendsVuexREST
Micro-frontends SSR Platform
2020–2021
A micro-frontends platform with SSR, shared UI foundations, and multiple service-level frontends.
Vue 2SSRMicro-frontendsVuex
Translation Management UI
2020–2021
A UI for managing translation keys with multi-environment support and API integration.
ReactTypeScriptRedux-SagaSASS
AML & Trading Interfaces (Enterprise UI)
2019–2020
A modular enterprise UI for AML/trading bots with charts, forms, and DX tooling.
ReactFlowRedux-SagaCharts
Monitoring & Admin UIs (Microservices)
2019–2020
Monitoring/admin interfaces built in a microservices context (REST/WS integrations).
ReactReduxRedux-SagaWebSocket
Full-stack Product Delivery (Java/Spring + React)
2018–2019
End-to-end delivery across backend (Spring/Hibernate) and web UI (React/Redux).
JavaSpringHibernateReact