Helping a US SaaS company grow their product and tech team.

15Five helps companies improve employee performance by delivering everything managers need to impact employee engagement and performance, including continuous feedback, objective (OKR) tracking, peer recognition, 1-on-1s, and reviews.

15Five is a growing US-based startup behind a SaaS product for lightweight employee performance management. Since its founding in 2011, 15Five grew to a team of 35+ people serving over 1,400 clients such as LinkedIn, Spotify, Hubspot or Citrix and “INC. 5000” representatives.

San Francisco / New York



We met Nazar (Co-founder & CTO) back in 2015 when he was looking for experienced Python engineers to help grow his SaaS product and join his strong team of 15. Local recruitment was not enough as Nazar wanted to be able to scale his team faster and more effortlessly, so he could spend more time focusing on the product and technology. He had very high standards and looked for experienced, self-reliant developers driven by integrity and passion. After initial contact, we met in NYC and decided to kick off the first project.


15Five is a state-of-the-art web-based SaaS platform serving thousands of users every day, sporting public and mobile app APIs. It consists of application servers, relational databases, caching layer, asynchronous task queues, and many more - all designed for security, scalability, and continuous integration. Backend development requires designing performant data structures, implementing complex business rules, and optimization of database load. Managing visibility and privacy of data is also a key factor. There are multiple integrations to manage with third-party services, both for back office and the end users. Frontend requires combining different technologies while maintaining consistency, clean look, performance, and responsiveness to deliver a great user experience.


We started our collaboration by assigning one half-time senior backend engineer to the project. Our first job was working with the customer support team to help tackle bugs and reported issues. After a successful first few months during which we acquired solid knowledge of the product and codebase, we started working on core elements of the system, as well as some new features. In time, we grew the team of engineers and expanded our support to include frontend development as well.

  • Full-stack web development
  • API development
  • Third-party service integration and data migration
  • System maintenance
  • Team extension / Dedicated team
  • Python / Django
  • JavaScript
  • Vue.js, ES6


Our team has now become an integral part of 15Five - we not only work side by side on scaling the product but also take time to visit each other to foster our relationship and celebrate victories together.

since 2015

Working together


engineers involved in a project


in team size since they started working with us


“All of the features built by Sunscrapers have been successful. I was surprised by the level of attention to detail shown by their team, and by how much Sunscrapers cared about our project and the product itself. Sunscrapers has come back with suggestions for alternative approaches, trying to make our product better and more successful.”

Nazar Ivaniv, Co-founder and CTO at 15five

Client since 2015

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Sunscrapers Sp. z o.o.
ul. Słomińskiego 7/254
00-195 Warsaw

New Business
[email protected]

[email protected]


Clutch award top Python & Django Developers 2019 Clutch award top financial services software developers 2019 Clutch award top B2B companies Poland 2019 Clutch award top developers Poland 2017


Sunscrapers Sp. z o.o.
ul. Słomińskiego 7/254
00-195 Warsaw
New Business
[email protected]

[email protected]

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