FastTrack Visa Platform
Status tracking, approvals, and document workflows.
Immigration and visa workflow platform supporting clients, partners, and administrators.
View case studyMuslim Uddin Arju · Senior Full Stack Engineer
Building dependable products from interface to infrastructure.
Senior Full Stack Engineer with 12+ years of experience delivering SaaS, fintech, enterprise, CMS, Web3, and automation products—from architecture and implementation through cloud deployment.
React · Next.js · Node.js · TypeScript · AI Automation
Lisbon, Portugal 12+ years of experienceBuilding and delivering production software
Frontend to cloud deliveryArchitecture, development, and deployment
International collaborationProduct teams across Europe and Asia
Open across the EU and UKRemote, hybrid, and relocation opportunities
Selected work
Case studies with context, constraints, and decisions.
Indexa Crypto Platform
Wallet integration, KYC/AML workflows, 2FA, and real-time pricing.
Cryptocurrency asset-management platform with wallet and financial-service integrations.
View case study
LMS & ERP Platform
Institution management across academic and operational workflows.
Educational institution management for records, courses, reporting, and operations.
View case study
Online Energy Monitoring System
Real-time energy analytics and reporting.
IoT monitoring and real-time energy analytics for SEDA Malaysia.
View case studyCapabilities
Moving between product direction and technical delivery.
Full-stack application development
Production applications across frontend, backend, APIs, and data.
SaaS and enterprise platforms
Platform architecture and delivery for multi-role operational products.
AI integration and automation
LLM integrations, agents, and workflow automation.
CMS and WordPress solutions
Contentful, WordPress, WooCommerce, Joomla, Drupal, and headless CMS work.
Technical architecture and modernization
Architecture, cloud deployment, CI/CD, and modernization.
Performance, SEO, security, and maintenance
Focused improvements for performance, discoverability, security, and operations.
Technical range
Skills applied in context, not displayed as scores.
Frontend
Backend and APIs
Databases and caching
Cloud, DevOps, and infrastructure
CMS and commerce
AI engineering
Experience
Technical depth shaped by product responsibility.
My experience spans full-stack development, product delivery, cloud infrastructure, CMS platforms, AI integration, and technical leadership across international teams.
Explore my experience →-
Aug 2024 — Present Senior Full Stack Developer
Xeno Holdings Ltd.
Cryptocurrency trading and asset-management platforms.
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Sep 2023 — Jul 2024 IT Director / Full Stack Developer
The Lakhani Group
FastTrack visa-management platform and IT modernization.
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Aug 2022 — Jul 2023 Full Stack Developer
UBlocks Technologies
React, Node.js, MongoDB, blockchain and Web3 applications.
Writing
Notes from building and shipping software.
Engineering
How this portfolio publishing workflow works
A concise guide to the Contentful-to-Astro publishing workflow used by this portfolio.
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Looking for someone who can move between product strategy, architecture, and delivery?
Open to remote, hybrid, and relocation opportunities across the EU and UK.