Marius Varasteanu

Software Architect & Full Stack Developer

Experienced software engineering professional specializing in designing, building, and scaling robust web applications and enterprise solutions. Proficient in full-stack development, modern architectural patterns, and efficient system integration.

office@cyberwave.ro

+40 735 088 734

Bucharest, Romania

varasteanu.eu

Professional Experience

Senior Software Architect & Full Stack Developer

2021 - Present

Independent Contractor / Consultant

Directing end-to-end software engineering operations, managing full project lifecycles from architectural blueprints and system design to execution, deployment, and client delivery across diverse industries.

  • EdTech & Social Impact Platforms: Architected and scaled a global educational and networking ecosystem designed for high-traffic community engagement, interactive learning modules, and secure resource distribution.
  • InsurTech & Financial Systems: Designed robust architectures for insurance platforms, optimizing workflow automation, custom reporting engines, and secure data transactions.
  • CCaaS & Telephony: Developed custom Contact Center solutions and automated ticketing systems, improving response workflows and third-party integration metrics.
  • PropTech (Property Management): Engineered comprehensive real estate and facility management web applications optimizing administrative operations and billing modules.
  • Digital Asset Management: Built specialized applications for video production workflows, focusing on high-throughput data processing and performance optimization.
  • Technical Leadership: Leading technical decisions regarding cloud infrastructure, database modeling, and API integrations, ensuring high availability and clean codebases.

Web Developer / Junior/Mid Software Engineer

2020 - 2021

Kicked off my professional engineering career during my years of university, focusing on core web development and database implementations.

  • Application Development: Developed and maintained web applications utilizing native PHP, JavaScript, and MySQL, delivering robust modules based on technical specifications.
  • Database Foundations: Assisted in modeling relational databases, writing optimized SQL queries, and managing standard data migrations for local client projects.
  • Frontend Integration: Crafted responsive user interfaces using HTML5, CSS3, jQuery, and AJAX, ensuring seamless browser compatibility and backend API consumption.

IT Infrastructure & Systems Support Specialist

2018 - 2020

Managed Service Provider (MSP) / Tech Outsourcing

  • Microsoft Ecosystem Expertise: Administered, configured, and deployed Microsoft corporate solutions, Active Directory, cloud environments, and internal network assets for client firms.
  • Remote & Onsite Operations: Managed complex hardware and software incidents, transitioning operations into a high-efficiency remote deployment and remote monitoring model.
  • Client Outsourcing Management: Acted as the primary technical point of contact for multiple businesses, aligning IT infrastructure with client operational requirements.

Systems & Audio Technology Specialist

2018

International Broadcasting Infrastructure

  • Systems Engineering: Managed, configured, and monitored specialized audio and technical equipment for live international feeds under strict operational constraints.
  • Infrastructure Reliability: Ensured zero-downtime performance for global transmissions by diagnosing complex hardware bottlenecks and maintaining high-fidelity signal routing.

Software QA Specialist & IT Infrastructure Coordinator

2017 - 2018

Tech Services Provider

  • Software Quality Assurance: Executed complex test plans and performed functional/regression testing for high-profile software releases, maintaining strict stability benchmarks.
  • IT Operations: Directed the hardware and software maintenance cycle for internal systems, optimizing workstation performance and network availability.

Deep-Dive: Key Architectural Solutions & Implementations

Engineered a high-availability subscription and billing orchestration engine. Implemented robust state machines for fail-catch routing, automated transaction retries, and direct server-to-server webhook validation to guarantee asynchronous data alignment.
Designed and deployed native integration middleware for automatic XML/JSON data transformation and structural transmission to national fiscal authorities. Features internal validation pipelines and automated error recovery handling government server timeouts.
Built secure automated backend workflows integrating hardware security modules and remote APIs for legally binding electronic signatures. Handles automatic PDF formatting, certificate validation chains, and secure cryptographic storage protocols.
Developed a secure brokerage sync API capable of executing real-time policy quotes and instantaneous digital policy issuance. Connected distributed web systems directly with institutional risk management clusters via SOAP/REST endpoints.
Integrated compliance validation flows that extract and process corporate risk profiles, credit ratings, and politically exposed persons (PEP) databases. Designed automated triggers inside transaction orchestrators to minimize regulatory exposure.
Architected lightweight PHP services utilizing Slim Framework optimized for low latency and high throughput. Refactored critical integration modules away from monolithic structures into clean, decoupled, unit-tested APIs.
Designed specialized extraction, transformation, and load (ETL) data pipelines to migrate decades of legacy relational data into normalized PostgreSQL schemas. Maintained continuous referential integrity with near-zero pipeline downtime during structural transitions.
Built custom computer telephony integrations (CTI) hooking live IVR call metrics directly into centralized omnichannel dashboards. Optimised database search routines and index strategies to retrieve client data payloads instantly on live calls.
Developed autonomous routines that scan daily banking statements, parse incoming MT940/CAMT structures, and instantly clear internal accounting ledger entries. Drastically reduced human overhead and manual verification mistakes.
Audited and fortified vulnerable multi-tenant web systems. Deployed critical web application firewalls (WAF), removed persistent malware, refactored raw legacy SQL configurations against injection, and optimized historical cron task loads.

Technical Expertise & Ecosystem

Architecture & Design: System Design, Microservices, RESTful APIs, SOAP Web Services, Transaction Orchestration, State Machines (Fail-Catch), Omnichannel Architecture

Backend Engineering: PHP Slim Framework, OOP & Clean Code, ETL Processes, Data Pipelines, Computer Telephony Integration (CTI/IVR)

Data & Storage Layer: PostgreSQL, SQL Optimization, Database Refactoring, Data Transformation (JSON/XML), Caching Strategies, Referential Integrity

Security & Compliance: Cryptographic Signatures, FinTech Gateway Integrations, Government API Integrations (ANAF), Risk Assessment & KYC Pipelines, Malware Remediation, Web Application Firewalls (WAF)

Legacy Ecosystems & Tools: WordPress Custom Development, jQuery, Joomla Core Maintenance, Drupal Refactoring, PrestaShop Engineering, Git Version Control, Cron Job Optimization

Front-End & UI Interaction: JavaScript (ES6+), CSS3 & HTML5, Responsive Web Design, Dynamic UI Components, AJAX / Async Data Fetching, DOM Manipulation

Education

Bachelor of Science in Computer Science (Informatics)

Graduated 2021

© 2026 Marius Varasteanu. All rights reserved. | Built collaborating with AI systems