Toptal Blog

The Toptal Blog is the top hub for developers, designers, management consultants, executives, and entrepreneurs, featuring key technology updates, tutorials, freelancer resources, and management insights.

Toptal core team members share their experience, expertise, and perspectives on the Toptal Edge Blog

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Unit Testing in Flutter: From Workflow Essentials to Complex Scenarios

Incorporate comprehensive unit testing into your Flutter project to ensure best practices and reduce bugs before—not after—the app’s release.

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Dacian Florea

Dacian is a senior full-stack mobile applications developer, a Flutter expert, and a contributor to the Flutter framework. He helps companies around the world design and implement quality software solutions and deliver excellent user experiences.

The KPI Cure: How Healthcare Data Analytics Can Improve Medical Center Finances

Runaway costs have plagued the US healthcare system for decades, and providers are always looking for ways to increase efficiency without jeopardizing care. Developing smarter key performance indicators can help.

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Sean Heberling

Sean is a Chartered Financial Analyst who serves as the founder and CEO of Marion Street Capital, a management consulting firm that has saved healthcare providers millions through the development of KPIs. Previously, he worked at Morgan Stanley and BNY Mellon. Sean has analyzed 10,000+ companies, built complex models, and helped facilitate investment transactions totaling in excess of $1 billion. Additionally, he is on the boards of several companies, advising on operations, growth strategy, and fundraising.

Identifying the Unknown With Clustering Metrics

Clustering in machine learning has a variety of applications, but how do you know which algorithm is best suited to your data? Here’s how to amplify your data insights with comparison metrics, including the F-measure.

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Surbhi Gupta

Surbhi is a data scientist and developer with expertise in machine learning and robotics. A former senior data science engineer at Utopia Global, her experience ranges across ML fields including NLP, computer vision, and OCR. She has a master’s degree in mechatronics, and has published research in the field of robotics and optimization.

Future-proof Your Android Code, Part 2: Functional Reactive Programming in Action

The functional reactive programming (FRP) paradigm is becoming increasingly mainstream. In this installment, we discuss FRP essentials like system design and libraries, and implement a sample application.

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Iliyan Germanov

Iliyan is an Android developer and CTO who has founded four startups and created several top-rated apps, including Ivy Wallet, which has received 10 YouTube tech community “best UI/UX” awards. He specializes in functional programming, UX, Kotlin, and Haskell.

You’ve Landed Your Next Scrum Master Job. Now What?

The first days in a new position can be confusing and lead to avoidable mistakes. These Scrum master best practices will help you become the servant-leader your team needs.

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Anna Zakoyan

Anna is an Agile coach, senior Scrum master, trainer, and consultant with 16 years of experience in project and team management. She has helped more than 50 companies, including SGS Digicomply, Krisp, Ucraft, HSBC, Ameriabank, and Joomag, transform how teams collaborate and how work gets done.

The Foundations of Functional Reactive Programming in Android

This tutorial explores the mathematical concepts behind two key programming paradigms, functional programming and reactive programming, so you can build long-lasting Android architecture.

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Iliyan Germanov

The Allure and Impact of Minimalist UX Design

Minimalism is a prevalent design approach, but putting its principles into practice is challenging. Follow these minimalist UX design strategies to build frictionless digital products that help users reach their goals.

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Ravi Talajiya

Ravi is a UI/UX designer and certified IBM Enterprise Design Thinking Practitioner. He has designed mobile products in the healthcare, finance, and sustainability sectors, and was a senior UI/UX designer at IndiaNIC, a leading web and mobile solutions developer with a global client list that includes McDonald’s, Cartier, Adidas, AstraZeneca, Gulfstream, and Best Buy. He has a bachelor’s degree in computer science and engineering.

SAFe Case Studies: Transformation Notes From the Field

In the final installment of Toptal’s Agile scaling series, the creator of SAFe, Dean Leffingwell, shares his expertise alongside three case studies from Toptal project managers who discuss the challenges and rewards of implementing an Agile scaling framework.

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Daniel Carroll

Daniel is a Senior Editor for the Toptal Projects and Product Blogs. He has more than 20 years of experience at publications of the University of Chicago Press, Cambridge University Press, and Elsevier.

A .NET Programmer’s Guide to CancellationToken

Microsoft created a standardized cancellation implementation that has far-reaching capabilities beyond its original use case—from application run states and timeouts to interprocess communications.

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Davit Asryan

Davit is a software engineer specializing in .NET and C#. He has created enterprise software for companies like Veritas, serving as a Senior Principal Software Developer. Davit has overseen complex architecture migrations and worked on multimillion-dollar projects.