Alejandro Corsino

Senior Full-Stack Engineer

LocationAustralia
EmailN/A
PhoneN/A
Webalecorsino.art
LinkedInlinkedin.com/in/alecorsino
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Senior Full-Stack Engineer holding a Bachelor's degree in Computer Science, with a rare, balanced mastery of both frontend and backend ecosystems. I pride myself on never neglecting either side of the stack, pairing high-performance frontend development (React, TypeScript, NodeJS, NextJS) with deep enterprise backend engineering (NodeJS, NextJS, Java, .NET Core). My experience spans optimized e-commerce platforms and high-concurrency SaaS products, where I specialize in real-time data synchronization, multi-language internationalization (i18n), and complex multi-tenant architectures.
I actively leverage next-generation AI tools like Cursor and Claude Code to supercharge development velocity, expertly balancing AI-augmented efficiency with the deep, hands-on fundamentals required to architect and code complex systems by hand. I thrive on 'owning the build,' frequently setting up the deployment pipelines and cloud environments I work within. Dedicated to sustainable engineering practices, I lead teams by example and make pragmatic technical choices that align closely with business goals.
Key Highlights:

  • Leadership: Tech Lead at Pet Circle.
  • NextJS at Scale: Leading NextJS rewrite of events/venue/admin/Swift-POS SaaS (Attekus, 4-app monorepo); previously rebuilt 6+ brand sites at Merkle/Dentsu (Funlab, APT Cruises) with SSR/SSG, i18n, CMS integrations
  • Cloud & DevOps: Hands-on with GCP, Azure (Pipelines, App Service); built and maintained CI/CD pipelines
  • Certified Foundations: Prince2 Practitioner, IASA Architecture certified, Bachelor's in System Analysis

Employment History

Attekus - Mar 2025 - Present - Senior Software Engineer

Australia · attekus.com.au

Leading the NextJS technical direction for modernizing a legacy Angular/.NET event-ticketing platform into a modern e-commerce SaaS. Building complex cart and checkout workflows for multi-event orders with seat reservations, time-limited holds, and payment gateway integration. Delivering real-time stock and seating availability across online and venue sales channels through a unified inventory layer backed by SwiftPOS point-of-sale integration.

  • Architected complex cart/checkout workflows: multi-event orders, SeatsIO seat reservations with real-time availability and time-limited holds, payment gateway integration with retry/fallback logic.
  • Implemented real-time stock and seating availability using Redis pub/sub and WebSocket, powering live seat maps and inventory counts for concurrent buyers.
  • Unified inventory across online and venue sales channels via bespoke SwiftPOS integration, ensuring consistent stock across all touchpoints.
  • Orchestrated transactional microservices for cart, payments, and fulfillment using NextJS, .NET Aspire, DAPR, and Redis for reliable distributed workflows.
  • Designed monorepo structure for 4 NextJS applications (Events, Bookings, Admin Portal, Swift-POS) using React 19, TypeScript, with custom design system built on shadcn/ui. Vitest, Storybook, Playwright, Tailwind.
  • Infrastructure: NextJS, NodeJS, .NET Aspire, DAPR, Redis, MSSQL, Azure.
  • DevOps: Established CI/CD pipelines using Azure Pipelines and GitHub Actions with Azure App Service.

Workflow Transformation: Established development practices where AI tools become force multipliers.

Tech stack: TypeScript, NextJS, React 19, Turborepo, shadcn/ui, .NET Core, Redis, Aspire YARP, Azure App Service, Azure Pipelines, GitHub Actions, SwiftPOS, SeatsIO reservations, Figma

Merkle/Dentsu - Aug 2022 - Nov 2024 - Senior Software Engineer

Australia · Remote

Funlab: Rebuilt all 6+ brand websites (Strike, Holey Moley, Hijinx Hotel, La Di Darts, Archie Brothers, B Lucky & Sons) as modern NextJS apps with SSR/SSG, i18n, and CMS integration — including booking/cart flows for venue experiences, payment integrations, and real-time availability management across brands. https://fun-lab.com/brands
APT Luxury Cruises: Overhauled booking and marketing sites into NextJS apps with complex multi-step booking checkout, recommendation engines for cruise packages, multi-currency payment processing, and multi-region routing. https://www.aptouring.com/
Worked on various Flutter and web projects across TypeScript, React, GraphQL, NodeJS, and NextJS. Multi-language/region applications for clients including Endeavour Group, Funlab, Health New Zealand, and Australasian Pacific Tours.

  • Built complex cart workflows with multi-item bookings, promo codes, and group pricing across Funlab brand sites.
  • Implemented growth experiments and A/B testing across brand sites to optimize conversion funnels and booking completion rates.
  • Web Technologies: NextJS, NodeJS, Express.js, TypeScript, React, GraphQL, Panda CSS, SQLite, Tailwind, Salesforce. Tooling: Rollup, Gulp, Webpack. Backend NextJS with various integrations including .NET backends and CMS platforms (Contentful, DatoCMS, Strapi, Salesforce).
  • Mobile: Built full-stack apps with Dart and Flutter (BWS Cooler App, Pub+ Loyalty App for Endeavour Group).
  • Took ownership of delivery for complex application development and recommended implementation approaches to clients. Integrated frontend with multiple backend systems.

Pet Circle - Aug 2020 - Mar 2022 - Senior Engineer, Frontend Tech Lead

Australia · Remote

Led frontend architecture and development for Australia's largest pet e-commerce platform. Managed a team of 5 engineers across Auto Delivery and Growth squads. Architected scalable APIs in NodeJS/NextJS to manage complex product catalogs, inventory systems, and secure payment gateway integrations. Built subscription auto-delivery scheduling, personalized recommendation engines driving upsell/cross-sell, and ran growth experiments across checkout flows and onboarding funnels. Implemented SSR for fast page loads and optimal SEO, ensuring frictionless checkout across all device types.

  • Managed cart complexity: subscription auto-delivery scheduling, multi-item orders with weight-based shipping calculations, and dynamic promo/coupon application.
  • Integrated payment gateways with multiple providers, implementing retry logic and failed payment recovery flows to minimize revenue loss.
  • Built personalized product recommendation engine driving upsell/cross-sell across product pages, cart, and post-purchase touchpoints.
  • Led growth experiments: A/B testing checkout flows, landing pages, and onboarding funnels to optimize conversion and retention.
  • Implemented real-time inventory sync across warehouse systems, ensuring accurate stock visibility and preventing oversells.
  • Established CI/CD pipelines, code quality standards, and performance monitoring in GCP environment.

Tech stack: NextJS, TypeScript, JavaScript, jQuery, Ramda, NodeJS, React, Zustand, Jest, Storybook, GCP, Java, Jira, Confluence, Docker, Cypress, Strapi, Figma

LMI Technologies - Mar 2020 - Jul 2020 - Senior Software Engineer

Australia · Remote · Contract

Continued as senior individual contributor on the same Gocator web application projects, focusing on feature development and code quality without the project management responsibilities of the previous engagement.

  • Delivered complex UI features for the Gocator sensor configuration interface using React and TypeScript
  • Maintained real-time WebSocket communication layer for sensor data streaming
  • Performed code reviews and mentored team members remotely during COVID transition

LMI Technologies - Mar 2018 - Feb 2020 - Project Lead, Senior Software Engineer

Canada

Led project execution, design, and implementation of web applications for two major projects (legacy migration and greenfield, plain JavaScript and TypeScript) for the Gocator 3D sensor product line. Led a team of 5 developers. Duties ranged from hands-on development, project planning, resource allocation, architecture, DevOps, technical design, and UX recommendations. Participated in periodic design/architecture planning and reporting meetings with other project leads. Drove the transition to modern frameworks and technologies. Performed frequent peer code reviews. Conducted technical interviews and selected new developers.

Tech stack: TypeScript, Webpack, Ramda, React, Jest, WebSocket, Storybook, Jira, Confluence, Docker.

ADP (Ascent Services Group) - Apr 2018 - Aug 2018 - Principal Application Developer, UI/UX

Canada · Contract

Led the design and development of a corporate-wide Angular component framework adhering to ADP's Visual Design Language (VDL), bringing UI consistency across dozens of enterprise HR products.

  • Architected reusable Angular 2+ module library with strict VDL compliance, enabling product teams to ship consistent interfaces without bespoke styling
  • Established component documentation and usage guidelines, reducing onboarding friction for consuming teams
  • Collaborated with UX designers to translate design tokens and interaction patterns into accessible, performant Angular components
  • Integrated the component framework into Unity hybrid mobile app infrastructure for cross-platform delivery

Tech stack: Angular 2+, TypeScript, SCSS, Unity, Hybrid Mobile, Storybook

ADP - Aug 2016 - Dec 2017 - Senior Application Developer

USA, then Canada

Full-stack development on ADP's enterprise HR and payroll platform, modernizing monolithic Java services into RESTful microservice architectures and building unified AngularJS and Angular 2 dashboards for complex workforce management workflows.

  • Wrapped legacy Java monolithic services into modern RESTful APIs, enabling incremental migration to microservices without disrupting existing consumers
  • Built NodeJS orchestration layer to aggregate data from internal and external microservices, reducing frontend complexity and network round-trips
  • Developed AngularJS and Angular 2-based unified dashboards that simplified complex backend HR/payroll processes into intuitive workflows for enterprise users
  • Implemented Redis caching strategies to reduce API latency on large-scale datasets serving millions of employee records
  • Optimized database queries and indexing for high-volume payroll processing, improving batch job throughput by significant margins

Tech stack: Java, NodeJS, AngularJS, Angular 2, Redis, REST APIs, Oracle DB, JavaScript, HTML/CSS

CXC Corporate Services - Dec 2015 - Feb 2016 - Senior Front-End Architect/Engineer

Client: Deloitte Australia

Delivered data-driven web applications for government and enterprise clients, specializing in interactive data visualization and mobile-first single-page applications.

  • Built responsive HTML5/D3.js dashboard for the Greater Sydney Commission, transforming complex urban planning datasets into interactive choropleth maps and drill-down charts for government stakeholders
  • Designed and implemented mobile SPA for Johnson & Johnson TotalView APAC, embedded within Salesforce Service Cloud using Visualforce and Lightning components
  • Architected front-end layer with responsive breakpoints and touch-optimized interactions for field-sales teams accessing the platform on tablets
  • Coordinated with Deloitte's design team to ensure WCAG 2.0 accessibility compliance across all deliverables

Tech stack: HTML5, CSS3, JavaScript, D3.js, Salesforce (Visualforce, Lightning), Responsive Design, SVG

Ecologie e-Media Group - Jun 2014 - Jul 2014 - Senior Software Engineer

Client: Foxtel

Short-term engagement delivering backend and frontend enhancements for Foxtel's Play entertainment streaming packages during a critical product launch window.

  • Developed and enhanced RESTful services using Spring MVC to support Foxtel Play's subscription and content delivery workflows
  • Built front-end features with HTML, jQuery, and CSS for the content discovery and package selection interfaces
  • Implemented API endpoints for content catalog retrieval and user entitlement validation
  • Ensured cross-browser compatibility across desktop and early smart-TV embedded browsers

Tech stack: Java, Spring MVC, REST APIs, HTML, CSS, jQuery, Tomcat

FINEOS Australia - Jan 2014 - May 2014 - Senior Software Engineer

Client: TAL

Solution Designer and Full-Stack Engineer on FINEOS's insurance claims management platform, delivering custom features for TAL (Australia's largest life insurer by claims paid).

  • Gathered requirements directly from TAL business analysts and translated them into technical specifications with effort estimations for sprint planning
  • Developed full-stack features using Core Java backend with JSP-based server-rendered views and jQuery/CSS interactive front-end layers
  • Built claims workflow automation components that reduced manual processing steps for case managers
  • Delivered solutions within FINEOS's proprietary platform constraints while maintaining upgrade compatibility

Tech stack: Java, JSP, jQuery, CSS, FINEOS Platform, Oracle DB, Maven

Adaptra Group - Jun 2011 - Dec 2013 - Senior Integration Engineer

Led multiple concurrent enterprise integration projects for major insurance and financial services clients, designing SOA-based architectures to connect disparate legacy systems.

  • IAG GO Claims: Integrated Guidewire ClaimCenter with IAG's existing policy administration and payment systems using Java-based adapters, SOAP/REST web services, and message queues
  • Employers Mutual: Designed and implemented integration layer connecting workers compensation claims processing with external regulatory reporting systems
  • Xchanging: Built data transformation and routing components for workers compensation claim data exchange between multiple insurers and government bodies
  • Designed reusable SOA integration patterns and Java API libraries adopted across multiple projects, reducing implementation time for subsequent engagements
  • Developed web portal front-ends using HTML, CSS, and jQuery for operational dashboards and claims status tracking
  • Mentored junior developers on integration patterns, enterprise messaging, and Java best practices

Tech stack: Java, Spring, SOAP/REST Web Services, Guidewire ClaimCenter, SOA, XML/XSLT, Oracle DB, HTML, CSS, jQuery, JBoss/Tomcat

Uber Consulting - Oct 2010 - Jul 2011 - Full Stack Java/Flex Engineer

Built incident tracking and safety management web application for NSW government, supporting workplace health and safety compliance workflows.

  • Developed rich-client incident reporting interface using Flex/ActionScript 3 with real-time form validation and multi-step workflow navigation
  • Implemented GWT-based administrative module for case managers to review, escalate, and resolve safety incidents
  • Built Spring/Hibernate backend with complex domain model mapping workplace hierarchies, incident classifications, and regulatory compliance requirements
  • Delivered RESTful APIs consumed by both the Flex front-end and third-party government reporting systems
  • Participated in user acceptance testing sessions with government stakeholders to refine workflows and reporting outputs

Tech stack: Java, Spring, Hibernate, Flex, ActionScript 3, GWT, HTML, CSS, jQuery, Oracle DB, REST APIs

Shaw of Australia - Sep 2008 - Sep 2010 - Senior Software Engineer

Full-stack development and systems administration for a mid-size Australian manufacturing/distribution company, integrating web applications with enterprise resource planning systems.

  • Developed VB.NET reporting tool generating complex business intelligence reports from multiple data sources for executive decision-making
  • Built Java web application using Vaadin framework providing real-time inventory visibility and order management integrated with Pronto ERP backend
  • Designed data models and managed Oracle database schemas supporting product catalog, supply chain, and financial modules
  • Administered Pronto ERP system including user management, module configuration, and data migration between system versions
  • Managed on-premise server infrastructure, deployment processes, and backup procedures for business-critical systems

Tech stack: Java, Vaadin, Flex, Spring, Hibernate, VB.NET, Oracle DB, Pronto ERP, HTML, CSS

Education/Certifications/Training/Seminars

  • 2012 - Prince2 Practitioner certified - APM Group / ILX group
  • 2012 - Prince2 Foundation certified - APM Group / ILX group
  • 2012 - Architecture IFC certified - International Association of Software Architects (IASA)
  • 2012 - Business Architecture training - International Association of Software Architects (IASA)
  • 2009 - Project Management Course - PMI (IAAP PMI rep.)
  • 2008 - Bachelor degree System Analysis - C.E.Te.C (Patagonia, Argentina)
  • 2007 - Diploma Programmer Analyst - C.E.Te.C (Patagonia, Argentina)
  • 2005 - Ethical Hacking - I-Sec Information Security