By continuing to browse this website, you agree to our use of cookies. Learn more at the Privacy Policy page.

Building complex data-centric solutions

Your go-to technology provider for solving complex big data, AI and high-load problems, building dev teams, and delivering large-scale data-centric solutions.

Contact Us

Recognized by:

How we can help you


Dedicated development teams

We gather and smoothly incorporate a dedicated team of top engineers, architects, designers, and other tech specialists to increase your in-house team capacity.


Technology consulting

A set of consulting services aimed at solving complex issues with your software. We assess and evaluate your system to provide actionable insights and recommendations.

Trusted by leading tech vendors

  • ad-lib logo
  • adstream logo
  • Plarium Logo
  • ironSource logo
  • OpenX logo
  • Pulsepoint Logo
  • Kochava Logo
  • Viewster logo
  • telefonica logo
  • ogury logo
  • Sizmek logo

Mat Cannon


We've been a client of Xenoss for a year now and find them an excellent technology partner. Highly skilled and knowledgeable with the ability to rapidly adapt to our needs. We intend to double the size of our current team with them in 2021.

Mat Cannon


Picture of Oli Marlow Thomas, CEO & FOUNDER, AD-LIB

Oli Marlow Thomas


We were looking for an experienced vendor to develop a performance-based media buying solution from scratch. One of the main reasons why we chose Xenoss was their extensive domain knowledge. It allowed us to save time and effort at the initial stages and dive right in product development. The team’s been very professional and responsive to our needs and was able to deliver the MVP under just several months. Later on, they’ve transformed it into a fully featured platform for in-game advertising, which already proved highly scalable and able to manage high load. I’ve been truly happy with their work, high quality standards, and communication.

Oli Marlow Thomas


Picture of Edward Lyon, HEAD OF PRODUCT, AD-LIB

Edward Lyon


Our business has grown since we started working with Xenoss by an enormous amount and much of that has to do with the software that they’re developing. The most impressive aspect of our collaboration is that the Xenoss team keeps on solving challenges we put in front of them and these are challenges that anecdotally, other businesses have tried solving but are not successful.

Edward Lyon



Ben Dzamba


Before turning to Xenoss, we had a demand-side platform that was costly and not scalable. Having access to a wealth of experience on the Xenoss team related to our domain of real-time bidding, we’ve cut costs and now have a much more efficient, reliable DSP for our customers. I’d gladly recommend Xenoss as a technology partner. I’ve found the team to be very professional and diligent, ensuring that our needs and expectations are met through every step of the development process.

Ben Dzamba


Photo of David Philippson on conference

David Philippson


We were looking for an experienced vendor to develop a performance-based media buying solution from scratch. One of the main reasons why we chose Xenoss was their extensive domain knowledge. It allowed us to save time and effort at the initial stages and dive right in product development. The team’s been very professional and responsive to our needs and was able to deliver the MVP under just several months. Later on, they’ve transformed it into a fully featured platform for in-game advertising, which already proved highly scalable and able to manage high load. I’ve been truly happy with their work, high quality standards, and communication.

David Philippson


Xenoss is recognized as one of the best AdTech service providers by AdExchager

An award-winning media and events company lists Xenoss among “The 2020 Programmatic Power Players”.


Building performance-oriented mobile DSP with innovative user behavior prediction mechanism

How Xenoss helped a leading demand-supply platform deliver a complex MVP within 14 weeks and achieve above-market conversion rates.

Xenoss to Speak at Data Science fwdays’21

The Xenoss Team will participate in Data Science fwdays’21 – one of Ukraine’s leading tech events dedicated to Big Data and AI/ML.


Developing a gaming advertising platform with 1.4B monthly video impressions

How Xenoss helped one of the leading global AdTech platforms focusing on gaming and entertainment improve system performance by 10x times.

Xenoss is recognized by Techreviewer as a Top Machine Learning company in 2021

A leading B2B research agency lists Xenoss among the best machine learning companies globally.


Building a video-on-demand platform with 1.1M monthly users for a leading content distributor in Europe

How Xenoss helped a contextual video platform provider lower the costs of CDN maintenance by 73%.

Xenoss is ranked among Top 30 software development partners in New York by DesignRush

One of the leading global b2b listing agencies features Xenoss among the best software dev companies in NYC in 2021.


Cutting infrastructure costs by 20x times for a programmatic ad marketplace with 1B audience reach

How Xenoss helped a real-time ad creative automation platform increase scalability to 1M QPS and reduce infrastructure costs by 20x times.

Facing a particularly difficult tech challenge?

Let’s discuss how Xenoss team could solve it for you.

Contact us

Xenoss: What we’re all about

Xenoss is a NY-based software development house solving complex big data, AI and high-load problems. We develop the solutions from scratch for our clients, build development сenters, or assist their tech team with improving existing solutions, building particular modules, and performing system optimization.

Our clients are leading SaaS companies, world-known enterprises, and aggressively growing startups. The software we’ve delivered is now the tech basis of multi-billion businesses and is being used by Nestlé, Adidas, Virgin, Uber, HSBC.

Partner with Xenoss to develop top-quality solutions at the first try

15 years

of building data-centric solutions


of our clients recommend us


Average solution uptime is 99.4%

Our solutions are used by Nestlé, Adidas, Samsung, Uber

Industry-recognized as Digital Transformation Leader by top media

Lower solution operational costs than market alternatives

Building technology that manages millions of operations per second

Working with all cloud services (Google Cloud, AWS, Azure)

Solutions that process dozens of petabytes per month at a reasonable cost

A proprietary library of read-to-use code components helping drastically reduce development time

Small efficient ultra-senior teams


Can't find the answer you're looking for? We've shared some of our most frequently asked questions to help you out

About Xenoss

Where is the Xenoss team located?

We have an R&D office in Ukraine and work with developers globally. Our main offices are in New York (US), and London (UK).

Why should I choose Xenoss over other providers?

We know how to build complex highload solutions and have over a decade of experience and dozens of successful projects to prove it. We’ve accumulated best practices and methodologies and built a proprietary library of reusable components. All of this can help reduce your development costs by 2-3 times and speed up time to market.

What is the Xenoss technology stack?

You can check out our full tech stack at this link.

Do you have experience working with products similar to mine?

Our main focus is on complex data-centric solutions for both startups and enterprises. You can find examples of our work on the case study page. To better understand your product and whether we have sufficient expertise to deliver it, we initiate a discovery call. Feel free to send us an inquiry on the Contact us page and let’s discuss it.

Do you provide any services besides development?

Apart from development, we also provide technology consulting (AI/ML, software architecture, due diligence, infrastructure cost optimization, Big Data, etc.), cloud and cross-server migration, legacy product modernization, and other value-added services. We also have our own MarTech Dev Center, focused solely on building solutions for MarTech, AdTech and Media companies. 

Can I request references from clients with whom you worked?

Absolutely. We can provide you with references from our clients upon request. To find out more about who our clients are and their feedback on our work, visit the Clients page. 

How do you communicate with clients’ in-house tech teams?

We use the leading virtual communication and PM tools to fully immerse our team into the client’s in-house development environment and vice versa, to ensure transparency and shared vision. We provide 24/7 customer support and have an open-door policy, which means our tech leadership is always available to answer our clients’ questions and assist.

What level of involvement do you expect from me?

Our approach depends on the client and their needs. Generally, we expect our client to be actively involved in strategic product management. That means we count on the client to tell us what needs to be done while our team will determine how to do it. 

How can I track the progress of our development efforts?

We measure progress by positively executed tasks. To ensure full transparency we have a strong collaboration tool set, hold regular meetings and provide direct contact with each team member. 

Will I have access to each team member working on my project?

Yes, as part of our communication strategy, you can easily reach each team member working on your project to ask your questions, check task status or just check in. Our developers are dedicated to your project and act as an organic extension of your in-house team, so you can have direct access to them.

Who will be my point of contact?

The dedicated project/product manager will be your main point of contact. However, you’ll also have direct access to our delivery managers, team leads and top leadership. So you’ll never feel alone or adrift during your software development journey with Xenoss.

How will I learn if anything goes wrong with development?

We make sure nothing does. We have a product development methodology of well-balanced KPIs that measure where we are in terms of timelines. You can keep track of them with a real-time dashboard and check whether everything is going as planned. In addition, we’ll have regular status meetings to keep tabs on the pulse of your project.

What are the initial steps of collaboration if I partner with Xenoss?

The first step is a free consultation where we carefully look into your current product and its roadmap to discover any weaknesses and potential bottlenecks. If you have no existing product and come to us just with an idea – we’ll help you validate your idea, create a prototype, map out the user journey, and specify the project. After that, we build an MVP and proceed to full-fledged product development.

How do I switch from the previous provider of development services?

We took over about half of our projects from previous vendors. We’ve established a polished handover procedure that ensures a fast takeover without any data loss and with a minimum impact on business operations. You will be able to easily switch from the previous vendor because our know-how ensures a smooth takeover.

What project management methodologies do you leverage?

We highly customize Agile-based methodology to suit our clients’ needs.

What kind of tech specialists do you have on your team?

Each team at Xenoss is equipped with a Team/Tech Lead, Solution architect, Tech Product Manager, Software Engineers with required skill sets and QA engineers/testers (manual and automation). If needed, we can provide business analysts (BA), UX/UI designers, DevOps engineers, mathematicians/data scientists and other roles required for successful product development. Each team construct is based on project specifics.

How fast can you scale up a team?

We can swiftly find new talent to fill a project need thanks to our strong local employer brand. To ensure we hire only the best of the best we’ve established a rigorous hiring process. On average, our team construction time is 1-2 months depending on project complexity, but we also have special ready-to-go Launcher Teams that can start the initial phase of your project within a week.

What is your team retention rate?

In the software development industry, the average turnover rate is 13.2 percent (source: LinkedIn). We keep a steady 96 percent retention rate which is by 10 percent better than the market average.

What is your typical team structure?

For all our projects we have established clear tech management roles such as solution architect, tech product manager, delivery manager and any additional tech staff depending on the project, stage of the development and tasks to be executed.

Do you sign an NDA/ SOW with clients?

Yes, we sign an NDA/SOW with all our clients. We value our clients’ safety and data privacy.

Will I own the source code?

Absolutely, the client is the sole IP owner. We take IP protection very seriously and warrant its upholding on three main levels: legal (severe penalties for breach of IP Protection contract), technical (access control and meticulous monitoring of developer activities by the security team), and cultural (mandatory IP Protection training).

Does Xenoss work with contractors?

No, we do not work with third-party contractors.

Let’s discuss your challenge