I'm Walther, a full-stack engineer who builds complete products, not just features. I take projects from the first sketch to production: web apps, mobile apps, APIs, databases, and the infrastructure that keeps them running. What sets me apart is range. I've shipped everything from custom hardware and embedded firmware to Angular frontends and cloud backends, so when your project touches more than one layer, I can own the whole thing without handoffs. I've also run a product solo end to end, which means I work fast, I make the calls, and I don't need a committee to ship. I write clean, tested code, I document as I go, and I explain things in plain language so you always know where your project stands.

Walther Chavez

I'm Walther, a full-stack engineer who builds complete products, not just features. I take projects from the first sketch to production: web apps, mobile apps, APIs, databases, and the infrastructure that keeps them running. What sets me apart is range. I've shipped everything from custom hardware and embedded firmware to Angular frontends and cloud backends, so when your project touches more than one layer, I can own the whole thing without handoffs. I've also run a product solo end to end, which means I work fast, I make the calls, and I don't need a committee to ship. I write clean, tested code, I document as I go, and I explain things in plain language so you always know where your project stands.

Available to hire

I’m Walther, a full-stack engineer who builds complete products, not just features. I take projects from the first sketch to production: web apps, mobile apps, APIs, databases, and the infrastructure that keeps them running.

What sets me apart is range. I’ve shipped everything from custom hardware and embedded firmware to Angular frontends and cloud backends, so when your project touches more than one layer, I can own the whole thing without handoffs. I’ve also run a product solo end to end, which means I work fast, I make the calls, and I don’t need a committee to ship.

I write clean, tested code, I document as I go, and I explain things in plain language so you always know where your project stands.

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Experience Level

Expert
Expert
Expert
Expert
Intermediate

Language

Work Experience

Founder & Lead Engineer at Turing Hydro
January 1, 2025 - Present
Designed, architected, and shipped a complete IoT + application platform in under 5 months as a solo founder: custom PCB, ESP32 firmware, Angular-based mobile app, SSR e-commerce store, and a self-hosted Kubernetes cluster. Built a monorepo with multiple Angular projects using NgRx and TypeScript workspaces, and implemented a reactive BLE layer for device communication. Developed ESP32 firmware in C++ with non-blocking relay scheduling, multi-stream BLE telemetry, MQTT cloud synchronization, and OTA updates. Created a NestJS backend integrating Stripe payments and IoT REST/real-time APIs. Operated production infrastructure with K3s, Traefik, automated TLS, zero-trust network policies, PostgreSQL/Timescale, EMQX, Redis, and supporting services.
Full-stack developer at Keysight Technologies
January 1, 2022 - January 1, 2025
Built scalable microservices for a cloud technology venture using Angular, NestJS, and C#. Implemented NATS messaging and PostgreSQL for high-performance data synchronization across distributed systems. Delivered features for a revenue-generating data visualization platform (Angular, Electron, Plotly.js) that helps non-technical users interpret complex test results via AI-generated labels and annotations.
Full-stack developer at Setfive Consulting
January 1, 2020 - January 1, 2022
Developed and maintained client-facing Angular UIs including ad creation tools and analytics dashboards using Gridster.js and Puppeteer. Worked with PHP/Symfony backends and data/analytics components including ElasticSearch and Snowflake.
Full-stack developer at Mobilize.Net
January 1, 2019 - January 1, 2020
Built a Visual Basic to C# transpiler and a sales tooling app that analyzes class hierarchies, structs, and namespaces to generate migration quotes. Used Roslyn AST visitor patterns with Neo4j and SQLite, plus web/UI components using Angular and TypeScript, and backend MVC/Azure integration.
Full-stack developer at Instituto Costarricense de Electricidad
January 1, 2017 - January 1, 2018
Built SIDOC, a document management system for ISO 9001 compliance using Spring Boot, MS SQL Server, Hibernate, and AngularJS.

Education

Bachelor's Degree in Computer Information Systems Engineering at UNA, Costa Rica
January 1, 2015 - June 30, 2019

Qualifications

Add your qualifications or awards here.

Industry Experience

Computers & Electronics, Energy & Utilities, Software & Internet, Professional Services, Retail

Experience Level

Expert
Expert
Expert
Expert
Intermediate