Startup engineering acceleration
Kelsus provides expertly assembled software engineering teams that span the whole gambit of what startups need from lean product experimentation and guidance, to beautiful intuitive UI/UX design, to deep technical software planning and implementation.
Our mission is to get you from seed round to successful exit with reliable execution on the software side so that you can focus on that startup hustle.

headquarters
other locations
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French 2769 - 6CBuenos Aires, C 1425Argentina
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15215 287th Ave NEDuvall, WA 98019United States
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AVENIDA PTE H YRIGOYEN 421Resistencia, H H3500Argentina
Focus
Portfolio
Sphero, Equifax, Zoopix, DigitalTown, Chatbunker. Intel

Specdrums for Sphero
We met Specdrums in 2017. They were a scrappy Kickstarter out of the CU in Boulder. They had raised over $200,000 from their Kickstarter based on a concept of wearable rings that could be used like drums -- playing different sounds when they struck different colors. Kelsus provided some minimal mobile development support and startup advice and has since stood by proudly to see them be acquired by Sphero and achieve distribution in all Apple Stores.

Keynote and booth demos for CES 2016
Much of what Kelsus did for Intel is locked behind our agreements, but the public that participated in CES 2016 was able to meet with us at the Intel booth and learn from us about how Intel had created virtual musical instruments using their new Curie chips embedded into wearable wristbands. Also, Intel used these same wristbands and software in musical performances during the opening keynote with CEO Brian Krzanich.
Intel was still using much of the software we built during this high energy, very tight deadline project over a year later and has used it in some very visible performances all over the world.

Zoopix mobile apps and back end systems
Kelsus has plenty of experience building social networks. And when we built ZooPix, we leaned on that experience to build an app that has easily garnered 4.9 stars with over 240 reviews as of the time of this writing on the app store. The app is intuitive, clean, and performant, but most of all fun! Users are saying things like
This app is perfect for us. We love sharing our furbabies online with all of our friends and new friends we meet daily. After a long day of LIFE we love to get online and look at all the furbabies who make us laugh, smile, cry. The pet community is amazing.TINY PETUNIAS LOVE ZOOPIX and cannot wait to see what it turns into in the future
The app is already available on the app store and will be on the Play Store in early 2019. Kelsus continues to partner with ZooPix to add engaging new features and additional back end components to be able to scale to millions of users.

KBS IT Custom Software Team
KBS is a billion dollar services business that provides cleaning and maintenance solutions to some of the nation’s largest big box stores such as The Home Depot, Walgreens, and other multi-location businesses like 24 Hour Fitness. They manage a roster of 20,000 employee cleaners and have operations capable of handling heavy staff turnover. Kelsus is building new data handling, IoT, and BI systems for them to help them with operational efficiency with a view towards improving margins for their private equity ownership.

Mobile apps and CMS
Construction instruction is a mobile application that teaches construction practices and concepts to construction professionals. Designed by and for builders, contractors, and architects, Construction Instruction has earned excellent reviews from industry-leading publications such as Green Building Advisor, Fine Homebuilding, Professional Builder, Constru-Guia al dia, Energy Design Update, and Builder magazine.
Kelsus has been working with Construction Instruction since 2012. We’ve iteratively added features and improved the app’s UX based on user feedback and analytics data over the years. We also revamped the back end services with WordPress to provide an easy to use CMS backing both the mobiles apps and the constructioninstruction.com website.
Reviews
the project
API Development for Cloud Services Company
"They get work done fast with high-quality, which is exactly what we wanted."
the reviewer
the review
A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.
Introduce your business and what you do there.
I’m the director of outsourced development for a cloud services company.
What challenge were you trying to address with Kelsus?
We integrate with multiple cloud vendors and needed help with building those integrations via APIs.
What was the scope of their involvement?
Kelsus is an extension of our technology team specifically tasked with bringing on more vendors quickly. We have a standard set of functions for every vendor integration using the vendor API. In the beginning, Kelsus sits in our meetings with vendors, learning how they work, what their business model is, and what product we’re going to sell. They then dig deep into the APIs available from the vendor and implement that knowledge in a JavaScript framework to perform the action.
A common use case was a customer creating a partner and provisioning an order. Kelsus would write the code to build all of that out. Their team then wraps up with a comprehensive testing review of work done in integration testing as well as a documentation review of what they’ve learned. This is done over and over again with multiple vendors.
What is the team composition?
We work with five people on our current project, and we’re looking to expand.
How did you come to work with Kelsus?
I have followed the progress of Kelsus over the years. I know one of the founders and have worked with people who worked there, so I had trust in their ability to deliver. They also have a very strong agile culture that would integrate well with our agile culture. When I had the opportunity to source, I reached out to Kelsus and some other firms. I let our internal team decide on the vendor, and Kelsus came out on top.
What is the status of this engagement?
The partnership started in January 2020 and is ongoing.
What evidence can you share that demonstrates the impact of the engagement?
Kelsus delivered our first vendor integration — which was also the hardest integration — faster than our team was able to accept it. They get work done fast with high-quality, which is exactly what we wanted. We haven’t had any major issues.
How did Kelsus perform from a project management standpoint?
Their resources are based in Argentina, so they had to flex their schedules slightly to align with the Mountain time zone. Their team has excellent written and spoken English skills: I can put them on a call with vendors with no risks or concerns. Our source repository is GitHub, and Kelsus also leverages productivity tools like Microsoft Teams and Microsoft Office.
What did you find most impressive about them?
We provided Kelsus with a framework to build each integration, but it has some limitations that we acknowledge. Kelsus actually built tools and utilities outside of what we delivered to make their process more scalable and of higher quality. They didn’t just take orders; instead built a process that will be sustainable.
Are there any areas they could improve?
The Kelsus team is agile, small, and nimble. However, when they integrate with our larger project management process, there seems to be a divide between the developers and project managers. We can bridge that gap for, but as we scale, it may get harder and harder.
Any advice for potential customers?
Partner with Kelsus. Don’t dictate to them exactly what you want the process to look like; invite them into your decision-making process. They have smart people, and if you partner with them, you’ll get a much better result.
the project
Mobile App/Backend Dev for Pet Social Networking Platform
“Not all software development firms are created equal; Kelsus is a team that you can trust.”
the reviewer
the review
A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.
Introduce your business and what you do there.
I am the co-founder and CEO of ZooPix, a social network for animal lovers.
What challenge were you trying to address with Kelsus?
We hired Kelsus to develop our software and handle the programing for our mobile social networking platform.
What was the scope of their involvement?
Kelsus developed our pet-owner social platform from scratch, setting up the database on AWS and building out our mobile apps. Originally, they used React Native to build a hybrid solution, but we later opted to create specific apps for iOS and Android.
One of the key challenges was creating an algorithm for our weekly pet show competition. It’s a nationwide event where North American users can post photos and videos of their pets. Users then comment and vote on the pets to rank them in real time.
People take it quite seriously. The event draws in at least a thousand participants per week, and the atmosphere can be extremely competitive. Kelsus had to engineer a high-quality solution that could handle a huge influx of users and then refine the algorithm over time.
Currently, they’re in the process of introducing direct messaging along with several little unique features. For example, the app will send out different sound notifications based on your pet type. So, if you have a dog, your phone will bark when you get notifications. Cat owners will hear meows.
What is the team composition?
John (President & Founder, Kelsus) and Federico (Principal, Kelsus) are my main points of contact. Both have been extremely valuable to building our business. John is heavily involved, ensuring that we’re making intelligent, wise decisions for our product. We’ve also worked with a UX designer and about five developers.
How did you come to work with Kelsus?
We found them through a personal connection in the tech industry who had heard good things about them. They’re pretty selective about whom they partner with, so we knew we had to come prepared. In our first call, we went over what we wanted to build and provided them with a detailed 50-page write up. The project started about a month later.
What is the status of this engagement?
We’ve been working with them since July 2017.
What evidence can you share that demonstrates the impact of the engagement?
Despite the fact that we’ve only allocated a minimal amount of money to marketing, we’ve gained over 20,000 users and more than 30,000 pets. We’re at the point where we’re actually looking to secure big funding to take our numbers to the millions. I believe we can do that because they’ve built a great, scalable platform.
How did Kelsus perform from a project management standpoint?
Overall, it’s very good. As with anything, it’s definitely been a learning process for both sides. We’ve never made an app of this caliber before, and our app is one of their first social networking projects.
The team manages everything on Trello and Slack, from guiding us through the development process to keeping everything organized. Anytime there is an error, they treat it as a learning experience so that we can move forward. They’re professional about revising work, suggest cost-effective practices, and are conscientious of our budget and time.
What did you find most impressive about them?
I can’t say enough positive things about them. Rather than just building whatever we ask of them, Kelsus has been very helpful about leading us through the development process. As a self-funded startup, we don’t always know what we’re building, so they advise us on the most efficient ways to proceed.
Are there any areas they could improve?
No, there’s nothing that sticks out to me. Not all software development firms are created equal; Kelsus is a team that you can trust.
Do you have any advice for potential customers?
Maintaining a consistent dialogue is key to building a good working relationship. They’re good at managing everything that they do, but it’s still important for you to stay involved in all of the product decisions. Be aware of what’s going on, and you’ll be successful.
the project
Web and Mobile Apps for Growing Online Platform
"Their guidance was more about the success of the project than their profit margins."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
TheDropp was an app that helped connect buyers with expiring inventory.
For what projects/services did your company hire Kelsus?
Kelsus inherited the original codebase and continued the development of the product.
What were your goals for this project?
To build a two sided marketplace that worked seamlessly on all devices
How did you select this vendor?
Jon, the owner of Kelsus, worked with me on an experimental project a few year prior.
Describe the project and the services they provided in detail.
Kelsus built and maintained a web application as well as an iPhone application. The product was quite complex, and required very keen attention to detail.
What was the team composition?
The team consisted of Jon, a PM, and about 5-7 developers, depending on the current sprint.
Can you share any information that demonstrates the impact that this project has had on your business?
We were able to build the product quickly, as to validate the business model. Moving fast, while maintaining a high level of quality is a challenge, and Kelsus was able to deliver.
How was project management arranged and how effective was it?
The project was managed by a SCRUM master.
What did you find most impressive about this company?
There are a lot of good software developers. Their ability to invest themselves in the project as if they founded it really distinguishes them. Their guidance was more about the success of the project than their profit margins.
Are there any areas for improvement?
Everyone has areas for improvement, but I can't think of anything specifically at the moment.
The first integration arrived ahead of schedule without sacrificing quality. The feat impressed the client and has led to an ongoing relationship. Timely, professional, and communicative, the team is willing to go above and beyond to make the builds top-notch and the process scalable.