Martin Rosbier

Senior Software Engineer
Backend-First Full-Stack | APIs, Integrations & Cloud

Buenos Aires, Argentina · UTC-3 · EU citizen (Spain)
martinrosbier@gmail.com · LinkedIn · https://martinrosbier.com.ar · Book a call

Hi, I’m Martin, a systems analyst. I help solve complex technical problems related to performance and scalability, improve user experience, and build systems that support business growth.

Professional Summary

More than 20 years of experience across backend-first full-stack development, API and integration architecture, cloud infrastructure, technical leadership, and production operations. Strong background in TypeScript, JavaScript, Node.js, REST APIs, PostgreSQL, AWS, Terraform, CI/CD, and React/Next.js, with additional production experience in Java and PHP. Experienced in building and modernizing customer-facing platforms, internal tools, e-commerce systems, and automation workflows while remaining hands-on with implementation. Work in English daily with international teams and stakeholders.

Core Skills

Backend & APIs: Node.js, Express, REST APIs, third-party integrations, authentication, scheduled processing
Languages: TypeScript, JavaScript, SQL, Java, PHP
Data: PostgreSQL, MySQL, MongoDB, Sequelize, relational and non-relational data modeling
Cloud & Infrastructure: AWS, Terraform, Docker, Nginx, Linux, GitHub Actions, CI/CD
Frontend: React, Next.js, Tailwind CSS, HTML, CSS, Sass
Quality & Operations: Jest, Playwright, WebdriverIO, Lighthouse, axe, monitoring, alerting, backups, recovery, rollback
Internal Tooling & Automation: MCP, Electron, Figma Plugin API, Webflow publishing workflows, AI-assisted engineering tools

Selected Engineering Work

Professional Experience

Incode - Senior UX Engineer

Software Engineering, Web Platforms & Automation

November 2024 – Present · Full-time

Own the engineering, operation, maintenance, and technical evolution of five production websites and three archived properties across a hybrid estate spanning AWS, Terraform, WordPress/PHP, Webflow, Tailwind CSS, and static infrastructure.
Designed and implemented the AWS architecture that replaced fragmented hosting with isolated, reproducible environments, centralized monitoring, automated backups, recovery procedures, and documented rollback paths.
Replaced manual CMS, dependency, security, and server maintenance with automation built on GitHub Actions, Terraform, shell scripts, AWS CLI, and WP-CLI, including automatic target-instance discovery.
Built and maintain Figma plugins used by the design team, supported by a Node.js/TypeScript synchronization service with batching, concurrency controls, rate-limit retries, and CDN-backed asset distribution.
Designed and continue to evolve an internal AI-enabled platform that serves as a day-to-day work environment for design and engineering, integrating knowledge access, publishing workflows, internal tools, automation, and AI-assisted development.
Developed MCP client/server tooling and an Electron desktop application for AI-assisted engineering workflows, using typed schemas, controlled tool execution, and human approval before applying local changes.

Comunicación Web - Founder / Independent Technical Consultant

2013 – Present · Selected contract work

Deliver hands-on software engineering and technical leadership for client platforms, integrations, e-commerce systems, and internal tools, covering architecture, implementation, infrastructure, delivery, and direct stakeholder communication.

Artist Growth Platform - Technical Lead

March 2023 – June 2025 · Part-time contract

Led the architecture and hands-on development of a multi-artist analytics and content-planning platform that consolidated music and social performance data into a single operational dashboard.
Designed a Node.js/Express backend with PostgreSQL and Sequelize for accounts, artists, platform connections, historical metrics, and scheduled third-party data synchronization.
Reduced request-time dependency on external providers by normalizing and persisting metrics, adding scheduled ingestion, rate-limit handling, retries, backoff, and indexed historical storage.
Built the Next.js/React and Tailwind CSS application layer for authentication, artist onboarding, account administration, date-filtered analytics, reusable charts, and calendar-based content planning.
Led two developers while remaining hands-on across architecture, complex integrations, migrations, and environment-specific AWS EC2 delivery pipelines using GitHub Actions, PM2, and Nginx.

Spiral - Backend Engineer / Technical Lead

June 2023 – October 2025 · Part-time contract

Led backend architecture and modernization for four automotive e-commerce storefronts, evolving legacy Java applications toward Spring Boot services while preserving production continuity.
Designed and maintained commerce and Payway payment workflows consumed by separate React/Gatsby storefronts, supporting AWS and Docker-based releases, troubleshooting, and API compatibility across the platform.

Custom Personalized E-commerce Platform - Technical Lead

February 2024 – August 2024 · Part-time contract

Designed and implemented a Node.js intranet that consolidated external sales APIs and WooCommerce orders into internal printing and fulfillment workflows.
Built product-personalization experiences with JavaScript and React, moving critical pricing validation to backend-controlled WooCommerce logic after diagnosing duplicated and inconsistent checkout calculations.
Integrated Bizum and PayPal with checkout, order-state, and failed-payment workflows across PHP, WooCommerce, MySQL, and provider APIs.
Led a mixed engineering and design team while improving performance, releases, server operations, backups, and production troubleshooting across Nginx, Redis, MySQL, and CI/CD workflows.

Hazak - Technical Lead

June 2023 – May 2024 · Part-time contract

Led technical ownership for four WooCommerce stores and one Shopify storefront, coordinating two developers, one designer, the agency owner, and client stakeholders across delivery, maintenance, performance, and production support.
Built custom commerce features and plugins while improving checkout, catalog, administrative, database, caching, hosting, and Tailwind CSS-based frontend behavior across active stores.
Turned client requests into scoped implementation plans, assigned and reviewed technical work, coordinated releases, and standardized backup, troubleshooting, and maintenance practices across fragmented environments.

Studio Hakuna / Airkit - Software Engineer - Solutions Architect

July 2020 – May 2023

Reverse-engineered undocumented third-party APIs and translated their behavior into maintainable integration contracts for Fortune 500 clients in insurance and banking.
Designed client-specific integration architecture across REST/JSON APIs, authentication flows, data mappings, service boundaries, and failure handling for sensitive production workflows.
Refactored legacy application logic toward object-oriented and layered structures while documenting architecture decisions, implementation patterns, and operational procedures.
Built WebdriverIO automation for complex multi-step workflows and supported hotfixes, troubleshooting, and client-facing delivery under tight production deadlines.

Earlier Experience

Dorve - Development Manager

June 2019 – February 2020 · Part-time

Led accessibility-focused enterprise and public-sector web implementations, including a Python/Angular-to-WordPress migration, custom content-import tooling, server administration, and WCAG 2.1-oriented validation.

Onmedia - Full-Stack Developer / Project Manager

February 2018 – March 2019 · Freelance

Owned the delivery of a custom e-commerce platform across frontend, backend, and production, using JavaScript, HTML, CSS/Sass, PHP, MySQL, Laravel, and WordPress while coordinating scope, team delivery, client communication, and hosting.

Idea 32 - Full-Stack Developer

June 2018 – February 2019 · Part-time

Managed development and production maintenance for six concurrent e-commerce properties, building custom interfaces and commerce functionality with JavaScript, jQuery, HTML, CSS/Sass, PHP, MySQL, WordPress, and WooCommerce while handling performance and production issues.

30f - Partner / Full-Stack Developer

2007 – 2013

Co-founded a web development company and delivered custom applications across JavaScript, HTML, CSS, PHP, MySQL, and LAMP environments, including a proprietary PHP MVC framework, frontend development, hosting, and production server configuration for enterprise, government, and international clients.

VDAr.com.ar - Full-Stack Developer / Project Manager

2004 – 2007

Built database-backed intranets and web applications using JavaScript, HTML, CSS, PHP, MySQL, Apache, and Linux, combining frontend and backend development with hosting, server configuration, database administration, and project delivery for international clients.

Education

Systems Analyst - ORT Argentina
2025

B.A. in Communication Sciences - University of Buenos Aires
2024

Languages

English: Professional working proficiency; used daily in international work for 5+ years
Spanish: Native