Senior software engineer · Technology consultantBuenos Aires, Argentina

HaraldSolaas

I started meditating at 15, teaching at 16, and writing code at 20. I haven’t stopped doing any of them.

I help companies build products that last — currently taking on consulting work.

Let’s build something

Scroll to meet me

Results

Carewell

A $21M rebuild that paid off in month one

$21M

Platform rebuilt

100

Lighthouse performance

Four engineers rebuilt Carewell's healthcare ecommerce from the ground up. We launched on time, engagement and sales rose in the first month, and the site works even with JavaScript turned off — a board-level requirement full of problems nobody in the industry had solved before.

Cruise

From weekly firefighting to a year of calm

14→0.3

Crashes per month

90%

Less execution time

The analytics platform executives and operations depended on crashed 14 times a month. I changed how the team tested — real use cases over coverage numbers — trained my colleagues, and it ran for a year at nearly zero. That infrastructure is still the team's foundation.

Estée Lauder

One system, 200+ storefronts

200+

Sites served

60→85%

Test coverage

One component system powering the ecommerce of 200+ brand sites worldwide. When hundreds of thousands of people shop every day, each deploy matters — we raised test coverage from 60% to 85% and cut the time to first interaction.

Legal industry · 2023–today

A platform that holds when the flood comes

A US legal company handling mass claims: when a case opens, traffic spikes massively within hours. I migrated their legacy single-page app to a server-rendered platform that stays fast, accessible and secure under load — and keeps their operation online.

01 / 03

I go for the last 1%.

Carewell

An ecommerce that works without JavaScript

The CDO tested the entire site with JavaScript disabled — nothing was allowed to break. Most of what that required had no documented solution, so I worked in proof-of-concepts: build small, validate with the team, incubate each feature on a corner of the site, then grow it to the whole stack.

Online academy

Done means measured

On a high-traffic learning platform we deployed progressively by user tiers. A feature wasn’t complete until 100% of users had run it for a week — with reliable data on its impact.

AI-augmented delivery

Three reviews before a human reads it

I build my own tooling: every pull request I open gets reviewed by two AI models, merged into one review, and pruned by a third agent before I read it. The last 1% includes how the work itself gets done.

“Not leaving anything for later. Going for the last 1% that makes the user experience awesome. Optimizing as much as it makes sense, as much as it adds value.”

02 / 03

I build things that outlive me.

Cruise

Testing infrastructure that became the foundation

At Cruise (autonomous vehicles, Silicon Valley) I didn’t just stop the crashes — I changed how the team tested and trained the engineers around me. Years later, the testing infrastructure I built is still what the team stands on.

Estée Lauder

Components that outlived my tenure

The component system I helped build keeps powering 200+ brand storefronts long after I moved on. Code that lasts is code that was thought through.

Community

A program that runs without me

I led 50 volunteers as part of a team to teach 500+ people in a Buenos Aires slum. I built the volunteer infrastructure, then stepped away. The program continues to this day without me.

03 / 03

I see the humans behind the system.

Origin

A psychologist’s son

My father was a psychologist and organizational consultant. From childhood, I learned to see systems as collections of people — their motivations, rewards, and sense of belonging.

Formative

Youngest trauma relief teacher in Latin America

At 16, I became the youngest Art of Living trauma relief teacher in Latin America. I worked with people who lost their homes in Villa La Angostura, with orphans, and with teenagers in conflict with the law. I learned that behind every difficult exterior, there’s a story and there’s love.

Professional

The bridge between engineering and people

At Carewell, I rebuilt a healthcare platform so exhausted family caregivers could find what they need faster. At Estée Lauder, a React component library serving 200+ ecommerce sites wasn’t about code — it was about the person trying to buy a product. At every company, I ended up as the bridge between engineering and product — because I see the humans, not just the code.

Beyond the code

The same principles, away from the screen.

Teaching

Talks and teaching on wellbeing

Certified Art of Living teacher since 2022. I give talks on habits, meditation and conscious leadership at wellness events, and facilitate a weekly meditation and writing gathering in Buenos Aires.

Service

Another way to grow up

Three years teaching teenagers in a Buenos Aires slum — breathing techniques, human values, how to play again. Helping them leave crime behind and see that another path exists.

Practice

9 years of daily practice

Sudarshan Kriya and meditation, every single day for 9 years. Joy isn’t accidental — it’s a discipline.

What I’m Building Right Now

I’m always building something — in code, in community, or in myself. Here’s what I’m working on these days.

TeachingEvery Wednesday

Sinergia — Meditation + reading/writing

Weekly gathering on Wednesdays at 7:30pm in Palermo. Meditation, time with a book or a blank page, and an optional dinner to stay for. By donation, no experience required.

Save your seat

BuildingOngoing

Technology & AI Partner for Businesses

I help businesses bring their operations into the digital world — from AI-powered automation to full product builds. Most recently: a ticketing and payments platform for a community event — MercadoPago checkout, QR tickets validated at the door, automated emails — built end to end. If you need a partner who understands both the tech and the business, let’s talk.

Get in Touch

PersonalOngoing

Follow My Adventures

Keeping adventure, art, travel and physical challenges as part of my everyday life. Follow along on Instagram.

Follow on Instagram

CommunityCycle closed · April 2026

BROTE — 100 trees in the ground

We closed the BROTE cycle: a reforestation party where every ticket planted a tree, and a closing plantation with Un Árbol at a nature reserve in San Miguel, ~30 of us with shovels in hand. 100 native trees planted in total.

TeachingOngoing

Breathwork & Leadership for Youth

Ongoing programs with university students and young professionals, combining breathwork, meditation, and practical tools for emotional strength, purpose, and conscious leadership.

Volunteer

The Full Story

A compact arc from age 15 to now.

Let’s build something.

I work as a senior technology consultant — helping companies build the right products with the right technologies, including AI that genuinely serves your team and your users. Consulting is how I usually work, and I’m open to the right full-time role. If you want an engineer who cares about your problem as much as you do, let’s talk.

Read the Carewell Case Study on Toptal

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