Cosmin Rusu

Duty Ventures - Software Design and Engineering Company

I'm leading a software development agency focused on fast iterations. Most of our clients are shipping more features, responding faster to support tickets, and have accelerated growth because of us.

We focused on HealthCare a lot lately due to the accelerated digitalization in this industry. I am a strong believer that we can make healthcare more technically advanced via pure software. 

In terms of technologies, our previous projects involved Ruby on Rails, React, React Native, Scala, Java, Kubernetes, GCP, AWS (ECS, RDS, AKS), Stripe Connect, HIPAA compliance.

Some of our previous clients: 
- Spotify
- Colgate
- Go4Ellis (incl. HIPAA compliance)
- KindBody (+1 HIPAA)
- NXT Sports
- Noom (Healthcare)
- Mochila Fulfillment
- 3Step
- Mylk Guys (YCombinator)
- NLV Productions
- SH Technologies
- One Step Software (Techstars)
- Ergodic Labs
- Med Prep
- Testing Psych
- Abundance Digital
- Tookitaki

Founder & Lead software engineer

Apple

Web Answers on the Siri Experience team, working on open-ended question answering. BERT, SBERT, TensorFlow

Machine Learning Engineer

Google

Intern in Google Ads team. Developed a daily training and prediction pipeline for a machine learning model. Worked closely with the data science and development team to integrate the R model in C++.

Intern in the Google Photos team. The project involved extending the selection framework for auto-created movies based on user content and implementing three new concept movies. Exposed to: Java 8, Protocol Buffers

Software Engineering Intern

Amazon

Amazon Development Center Iasi - Robot Detection Research team
The project involved creating a linkage and score system for robotic attributes. The main challenge was the huge amount of nodes and data that had to be processed every day.
Exposed to: Hadoop, MapReduce, Machine Learning, JavaScript, NodeJs

Software Engineer Internship

Transforming Visions into AI MVPs & Products | Founder @Duty Ventures | Ex {Google, Apple and Amazon}

Hi, I’m Cosmin, the Founder and Lead Engineer of Duty Ventures. 

After some experience as a software developer in companies such as Google, Apple, and Amazon, I decided to launch my project.

With several former colleagues and college friends, we launched our own startup specializing in software development for entrepreneurs and customers needing software development services. 

Duty Ventures is all about developing software products from start to finish, thanks to the experiences we have all acquired in the past years.

One of our most successful services is aimed at entrepreneurs and early-stage founders, for whom we provide an MVP-builder service getting their product from 0 to 1 within weeks!

However, our services are not limited to that. The teams we create do much more than just create MVPs and are able to adapt to the different technologies requested, all of this in an agile way.

Our most recurrent services are the following:
- MVP creation
- Custom Software Development
- Blockchain Development
- Mobile Development
- Checkout pages
- E-Commerce

And our most used technologies are:
- Ruby on Rails
- React
- React Native
- Java
- NodeJS


If you want to learn more about how we can help you, head over to: https://dutyventures.com


Phone: (+1) 669 200 9568 / (+40) 754 973 314
Email: cosmin@dutyventures.com

Engineering Teams for Ambitious Founders | Founder @Duty Ventures | Ex {Google, Apple and Amazon}

Perhaps my biggest lesson from working more than 5 years providing Software Development Services is: don’t burn bridges. It’s hard to do it. At some point, you might not deliver as well as you used to. There are peaks, and they are valleys. We need to be able to cross both, since we only have a North Star. What’s important is the process, not the outcome. If you focus on the process, the right outcomes will naturally come.

Now back to my idea: no matter what happens with a relationship, it’s best to end it on good terms. Make sure both sides are happy after moving in completely different directions. Why? Because really, that leaves the door open for future opportunities. This happened to me! Not once, not twice, but many times. Your current project might end, but the founder will have another side project they want to pursue, or they will move to a high-growth startup that could use your expertise.

It’s easier and better to invest in current and previous relationships than to build new ones. But one needs to do both for the best outcomes.

Remote work sounds simple. Hire from anywhere. Get talent everywhere.

But here’s what nobody tells you - compliance is a minefield.

Every country has its own labor laws, tax codes, regulations. What’s fine in the US might get you flagged in Germany or India.

I’ve worked with startups scaling global teams and seen founders blindsided by fines, audits, or even payroll freezes. Usually because they tried to copy-paste a US process onto the world.

Here’s what I tell anyone building a remote team:
- Never assume the rules are the same. Research each country before you hire.
- Don’t rely on guesswork. Use proper global payroll and compliance platforms.
- If you’re unsure, talk to a local expert. A quick check can save you months of trouble.
- Pay attention to IP and confidentiality laws. These differences can bite you later.

Bottom line: remote work makes geography irrelevant for talent, but not for compliance.

Get this wrong, and small mistakes become big distractions. Get it right, and your team can focus on what matters.

Ran into compliance surprises building your team? I’d love to hear what happened and what you learned.

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Bloomberg

Software Engineer

Services:
- Web App Development (front-end and back-end)
- Mobile App Development
- UX/UI App Design
- App Testing & Quality Assurance (QA)
- App Maintenance & Support

Some of our previous clients include:
Go4Ellis, NXT Sports, NLV Productions, SH Technologies, One Step Software (Techstars), Ergodic Labs, Mochila Fulfillment, Med Prep, Testing Psych, Abundance Digital, Mylk Guys (YCombinator)

Technologies:
Mobile iOS and Android apps crafted with Swift, React Native, or Flutter.
Web apps built with the Ruby on Rails Tech Stack or the MERN Stack (MongoDB, Express.js, React, Node.js), using Heroku, Kubernetes, DigitalOcean, Microsoft Azure, Docker Cloud, Google Cloud, Amazon Web Services.
Planning and managing of projects with Trello and Slack (for communication).
Beautiful UX/UI Design and prototyping using Sketch, Photoshop, Figma.

Industries we worked with:
Fintech, Health, E-Commerce, Media, Transportation, IoT, Construction, Hospitality, Finance

Software Developer

Software Engineering Intern @Bloomberg

Raluca Rusu

Improving a system older than me.

What started as a “tiny feature” turned into a full-blown archaeological dig:
  no way to test end-to-end,
  no relevant docs,
  countless hidden dependencies,
  and enough dead code to fill a museum.

At first, it’s overwhelming. But as you dig deeper, fix one issue at a time, and piece things together, something shifts: you actually understand it ☠️.

The deeper the mess, the steeper the learning curve, and the sharper you come out on the other side. 

All that chaos just to make deployments faster - totally worth the headaches.

Software Engineer - excited about data-driven development and remote work

Built a thing... remove stAIn (truly peak naming right here)

This weekend I got hot chocolate on my coat at a Christmas market,
went home with no idea how to remove it,
Googled like crazy for chocolate stain removal for the exact fabric mix in my coat (turns out not everything I own is 100% cotton... shocking, I know), 
realized this happens to me quite a lot.

So I made this: https://lnkd.in/dhbPqCKW (removestain.netlify.app)

Upload a pic of the stain,
add all the fabric types + % in the clothing item,
and it'll give you a way to get rid of it.

It works. Probably.
Try it! Let me know.

At least I got rid of the chocolate stain.

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