Lázaro Ansaldi
Backend Engineering Manager · AI Automation Engineer · Rosario, Santa Fe, Argentina
Tech-passionate engineering leader with 10 years of experience across the Microsoft ecosystem (.NET, Azure, SQL Server) and beyond — Node.js, AWS, React, MongoDB. I've led teams and owned architecture for clients in fintech, logistics, retail, and IoT, always under agile methodologies and focused on business goals. Today I manage the backend team at Fruition, and I'm deep into AI-first software delivery: at Wigou, an Argentinian startup, we build custom software for several companies with a development process 100% based on AI — agentic coding, automated reviews, and AI-driven workflows end to end.
Career
Dec 2023 — present
.NET Developer Lead → Backend Engineering Manager · Fruition
Joined as .NET Developer Lead and promoted to Backend Engineering Manager (Sept 2025). Shaping the platform's infrastructure and architecture while leading the backend team on standards and best practices.
- Spearheaded the adoption of a microservices architecture for modularity and scale
- Built an internal framework package based on Clean Architecture and CQRS, now the backbone of backend development
- Managed and optimized AWS infrastructure: S3, Lambda, RDS, and containerized services
- Technical leadership: standards, best practices, and a culture of engineering excellence
Ongoing
AI Automation Engineer · Wigou
Building custom software for several companies at an Argentinian startup with a development process 100% based on AI — agentic coding, automated code review, and AI-driven delivery pipelines.
- End-to-end AI-first workflow: from requirements to production with AI agents in every step
- Multiple client companies served in parallel, made possible by AI-scaled delivery
Jan 2023 — Dec 2023
Lead .NET Engineer · Eyrus
Combined technical expertise with strategic decision-making in a startup environment, leading key architecture and design decisions.
- Led development of modular, scalable microservices on .NET 6
- Orchestrated Azure-based solutions (App Service, Azure DevOps CI/CD) for scalable, resilient applications
- Conducted architectural reviews, mentored team members, and enforced coding standards
Jan 2021 — Jan 2023
Software Engineering Contractor · ShipBob, Inc.
Contractor on the migration of a legacy fulfillment system to a distributed, cloud-based architecture — both systems on Azure and .NET Core.
- Involved in all design and architecture discussions, code reviews, and task estimation
- Led the tech support team under Kanban with continuous customer communication
Apr 2020 — Jan 2021
Principal Engineer · SOUTHWORKS
Owned projects end to end: architecture definition, requirements refinement, estimation, and roadmap.
- Swisscom: migrated an on-premise architecture fully to Azure with .NET Core
- 7-Eleven: built a deployment management portal and AWS IoT agent handling 10k+ devices (Node.js)
- Contributed to hiring and training company-wide
Jul 2018 — Apr 2020
.NET Developer → Principal Engineer · Flexiti
Grew from .NET Developer to Principal Engineer in a consumer-lending fintech, working under SCRUM.
- Built CQRS-based microservice APIs over SQL Server and MongoDB
- Team leadership, project sizing, and agile estimations
- Maintained legacy WebForms sites, Windows apps, and services
Apr 2017 — Jul 2018
.NET Developer · Globant
Worked on .NET Framework applications across architectures — microservices, MVC, CQRS — for international clients under agile methodologies.
Nov 2015 — Apr 2017
.NET Developer · Saftec Sistemas de Seguridad
Developed and maintained .NET and SQL Server applications; owned user support and requirements gathering.
Achievements
100% AI-driven development process at Wigou
Delivering production software for several client companies where every step of the development lifecycle — coding, review, delivery — runs on AI agents. · 2026
Internal Clean Architecture / CQRS framework
Designed and built Fruition's internal backend framework package, enforcing architectural principles across all services. · 2024
10k+ device IoT fleet for 7-Eleven
Built the deployment management portal and AWS IoT agent (Node.js) operating more than 10,000 in-store devices. · 2020
Three monolith-to-microservices migrations
Drove cloud migrations at Eyrus, ShipBob, and Swisscom (via SOUTHWORKS) — from legacy .NET monoliths to Azure microservices.
Latest writing
All posts →AI Writes 100% of Our Code. Here's What Nobody Tells You.
I work on both sides: a development process fully run by AI agents, and a traditional engineering team. This is what actually works, what hurts, and what happens to our jobs.
Fri Jul 17 2026
Hello, world
Why I'm starting this blog, and what to expect here.
Wed Jul 08 2026