Alexandru M.

Alexandru M.

Full-Stack Developer

Romania
Trusted member since 2026
9 years of experience

He specializes in TypeScript, JavaScript, Vue.js, NestJS, .NET, and React, with extensive experience building scalable, cloud-ready platforms, modernizing legacy systems, and leading complex technical initiatives from concept to production.

Throughout his career, Alex has delivered enterprise-grade software that combines robust backend architecture with intuitive frontend experiences. He has successfully led platform modernization efforts, including frontend and backend migrations, architectural improvements, and performance optimizations that supported long-term scalability and business growth. His expertise spans full-stack application development, API design, multi-tenant SaaS architecture, and the implementation of modern engineering practices.

As the co-founder and technical lead of ABACare, Alex has been responsible for designing and developing a multi-tenant SaaS platform featuring AI-powered workflows, automation capabilities, and scalable cloud architecture.

Alongside his technical expertise, Alex is an experienced engineering leader who collaborates effectively with cross-functional teams, mentors developers, and drives the delivery of high-quality software solutions aligned with business objectives.

Main expertise

C#C#9 years
.NET.NET9 years
SQLSQL9 years
JavaScriptJavaScript9 years
18+

Experience4

Co-founder & CTO

ABACare Software
Healthcare IT
Jan 2026 · 9m

ABACare is practice management software built specifically for ABA therapy clinics.

  • Built a multi-tenant SaaS practice management platform for ABA therapy clinics from the ground up as the sole engineer, delivering a production-ready solution covering assessments, treatment planning, session management, and clinical reporting.
  • Designed and developed the full technology stack, including a Vue 3/Nuxt web application, React Native mobile apps, a NestJS backend, MongoDB, BullMQ, Redis/Valkey, and a DigitalOcean-based infrastructure with Grafana and Loki for observability.
  • Delivered AI-powered features using Anthropic and OpenAI APIs, including automated clinical report generation, structured treatment plan extraction, and AI-assisted data entry workflows.
  • Established an AI-assisted engineering workflow using Claude Code, Cursor, and other LLM tools to accelerate architecture design, development, refactoring, testing, and documentation.
  • Completed the core platform build-out, successfully launched the product into production with paying customers, and transitioned to an advisory role after achieving a stable, feature-complete release.
Vue.jsVue.js
MongoDBMongoDB
React NativeReact Native
Digital OceanDigital Ocean
Nest.jsNest.js
2+
ABACare

Project Tech Lead

Dymeng Services
Information Technology (IT) and Services
Mar 2022 - Jan 2026 · 3y 10m
  • Led the architectural modernization of a multi-module healthcare practice management platform, including session tracking, data collection, treatment planning, clinical reporting, and billing.
  • Migrated the frontend from Angular 5 to Vue 3, introduced React Native for new mobile applications, and modernized legacy systems to support a tenfold increase in user activity and data volume.
  • Led the backend modernization from a legacy .NET stack to a NestJS-based service architecture, introducing clearer service boundaries, strongly typed APIs, and improved testability.
  • Led a small Agile engineering team, overseeing architectural decisions, maintaining code quality, and ensuring the timely delivery of new features.
JavaScriptJavaScript
Vue.jsVue.js
AWSAWS
React NativeReact Native
MSSQLMSSQL
3+

Senior Full Stack Developer

Toptal Network
Information Technology (IT) and Services
Apr 2019 - Mar 2022 · 2y 11m
  • Max Planck Institute for Human Development (Berlin): Built a research data collection platform for autonomous vehicle ethics studies, developing an interactive survey application with Vue 2, ASP.NET Core 3, MS SQL, and PostgreSQL. Managed client communication, DevOps, and end-to-end project delivery.
  • Softelligence / Orange Money Romania: Developed a fintech application for in-store credit issuance using Vue 2, ASP.NET Core, and Azure. Built secure middleware integrating the platform with the Romanian state fiscal API and optimized frontend performance through Vuex state management and lazy loading.
  • Eaglebrook Advisors: Built a client onboarding portal using Blazor and .NET Core for a financial advisory firm. Planned and designed the decomposition of a monolithic application into a more modular, loosely coupled architecture.
  • Child Care Seer: Developed new features for a childcare management platform using Vue 2, including audit-style activity tracking and a parent-facing daily journal module.
  • Additional engagements: Contributed to multiple web applications, including WriteWise, a Grammarly-like editor for scientific documents (Vue 2, TypeScript, Vuetify, and ML-assisted content classification); Riding Post, a mobile-first horse stable management platform; and UtterAccess, a developer community platform built with Vue 2 and ASP.NET Core, featuring file storage on Amazon S3.
JavaScriptJavaScript
Vue.jsVue.js
PostgreSQLPostgreSQL
AWSAWS
MSSQLMSSQL
4+
NetRom Software

Full Stack Developer

NetRom Software
Transportation and Logistics
Mar 2017 - Apr 2019 · 2y 1m
  • Developed and maintained core modules for a maritime ship management system used aboard commercial vessels worldwide, including maintenance, inventory, purchasing, messaging, QHSE, crewing, and audit, using C# and WinForms.
  • Owned the offline-first synchronization engine that merged data between onboard databases and the central office database, enabling reliable data synchronization despite the lack of internet connectivity at sea.
  • Led the modernization of the desktop application by migrating it to a React and Redux single-page application (SPA), applying SOLID principles, lazy loading, and responsive design. Designed the shared ASP.NET Web API and developed a separate Angular-based administration portal for license management.
React.jsReact.js
C#C#
.NET.NET

Engineering excellence

All Full-Stack Developers who have applied to Proxify are scored from 0 to 300 on engineering excellence, one of the five parameters we evaluate. This score reflects engineering excellence only, based on interviews, take-home assignments, live coding sessions, and/or on-the-job performance reviews. The curve shows how all evaluated Full-Stack Developers are distributed across that range, where our acceptance threshold for this parameter sits, and where Alex stands.

050100150200250300Engineering excellence scoreShare of engineersmedianmeanProxifyacceptancethreshold
Alex
Score 204 · Top 6% of engineers

Portfolio

Highlighted by Alex

ABACare 2
Jan 2026 · ABACare Software
ABACare

ABACare is a practice management platform for ABA (Applied Behavior Analysis) therapy clinics in Europe. I co-founded it and built it as a multi-tenant SaaS covering session scheduling, individualized treatment programs, real-time data collection on web and mobile, automated progress charting, and a parent portal. GDPR-native and EU-hosted, with multilingual support across English, Romanian and Spanish. Live product with clinics in Romania and an active UK pipeline.

Duration5m

Education

FOA
Faculty of Automatics, Computers and Electronics, Craiova
Computer engineering2015 - 2019

Stop browsing.
Get matched faster.