Flutter CTO Report 2024
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We strengthen your team through our staff augmentation service

Credit Agricole logo
Welliba logo
We are your tech partner

Cloud of expert skills

We understand what it takes to excel in services. Never overpromise; always overdeliver. Hire one developer and get access to the 60-person technical team of experienced engineers who can help you with your problems using their knowledge and expertise.

Why are you looking for an external IT team?

New Flutter Application

If you’ve decided to build your first application in Flutter, we are here to help you build the foundations for such a project and scale your development efforts. You can deal with various problems at this stage, such as building scalable architecture, creating an efficient design system, or reskilling your in-house development team. Whatever the reason, our experts with experience in more than 60 Flutter projects can help you achieve your goals.

Frontend development using React

Our experienced Front-end Engineers can help you quickly scale up the software development process for any portal using React, Typescript, and other modern technologies. They can help you establish and maintain the whole process, from setting up the CI/CD pipeline through development covered with unit tests and building and running integration tests.

Backend system in .NET and Azure-based infrastructure

Are you facing the challenge of building and scaling your backend systems and their infrastructure? We have a lot of experience in building server apps and integrations based on C# and .NET framework. We have also created our application framework, which allows you to authenticate, manage users, generate fixed contracts for clients, and many more out of the box. Our backend services are typically paired with the typical DevOps activities, as all our backend engineers can configure and maintain the systems they create. 

QA Automation for Flutter using Patrol

For many years, Flutter universe was missing a critical component, which are cross-platform UI tests. As we have identified this need in our enterprise clients, we’ve decided to build our own UI Testing framework for Flutter called Patrol, which allows testing between Flutter widgets and native components. Our Patrol library is open-sourced, and we constantly develop based on feedback from existing clients.

What is included in IT Staff Augmentation 2.0?

Our clients often approach us with their business vision, which we have learned to transfer into the working product. This is why we provide the full range of optional services to build the mobile app from 0 to 1. 
Knowledge Transfer
Sparring Partners
Staff Trainings
Peer-To-Peer Mentoring
Help with the Recruitment
Architecture Workshops 
Design System Workshops
Flutter App Development
Backend Development
Fronted Development
Cloud Migration

What sets us apart from other agencies?


Experts on board

You have access to a team of experts in their fields and speakers at international tech conferences.


Automated tests

Forget regression bugs. Our robots make sure that everything is okay so that you don’t need to. This means higher overall app quality.


Large-scale apps

We’ve gathered the bulletproof experience from large (200+ people) projects so we provide you with a service that is tested, and proven.


Proactive approach

Our team actively contributes their ideas and technical expertise to enhance the quality and functionality of your app.


Solid university background

Graduates only from the best faculties in Poland in computer science and related fields, ensuring you receive the highest level of expertise.


Agile culture

We embrace Agile with Scrum as our default, but we also do Scrumban and Kanban. You gain the advantage of an adaptive approach to project management.


We love hard cases

Easy projects can be built with no/low-code tools. By choosing us, you partner with a team that thrives on overcoming difficulties and challenges.


We run a University grade course

We teach to code well both internally and externally. Our Experts are teachers who train other developers on mobile app architecture.


We build communities

We have founded Flutter Warsaw, co-founded Flutter Europe, and have been participating in all major Flutter meetups in Europe.


The Top European Flutter Agency

We are officially listed as a recommended Flutter Consultants, and you can find our case studies on Flutter.dev page.


We are on the tech edge

We closely monitor the new technologies and solutions to build state-of-the-art applications and software.


True leaders

Our Engineering Managers know how to train and lead the IT teams, and they can take care of your team as well.


Hire 2 Devs, get 60

Our 60 devs combined have knowledge of almost everything, and we facilitate knowledge transfer to solve complex problems together.


We build open source

We build our own packages and solutions that we often share with the community. We believe in the value of knowledge sharing.


We provide training of the staff

Our developers can help teach your team the skills necessary to continue your product development. We openly pass the know-how to our clients.

Examples of projects

Case Study of Credit Agricole Bank Polska App
Credit Agricole Bank Polska logo
Mobile Application

Credit Agricole Bank Polska

Case Study of Welliba App
Welliba logo
Mobile & Web Application


Reviews of working with our tech talents

Credit Agricole logo

LeanCode has delivered the MVP within 2.5 months, exceeding our expectations. Agile and detail-oriented, they've taken the time to understand the banking industry to deliver the most effective solution for our users. They are professional, efficient, and responsive.

Tomasz Czerwiński
Tomasz CzerwińskiDeputy CIOCredit Agricole Bank Polska
Welliba logo

Solid knowledge and trusting cooperation help us deliver new features to our customers quickly, continuously, and based on high-security standards. The sophisticated code base and experience within LeanCode provided us with a strong foundation for the IT security certification process. We are thrilled and grateful to have found LeanCode as a partner and look forward to our further cooperation.

Mario Martella
Mario MartellaManaging Director & CTOWelliba

How can you start with Staff Augmentation service?

Meet our expert

Let’s talk about scaling up your team!

Łukasz Kosman, CEO LeanCode

During our first interview, we will discuss your business needs, current resources, and how we can be helpful. You will also learn about the potential rates and timeline. 

Łukasz KosmanCEO at LeanCode

Learn more about our IT team augmentation services

How do you facilitate the knowledge transfer?

What are the cooperation models? 

We need to consult our architecture. Can we do that?

What are your hourly rates?

Can you provide some part-time experts to be the sparring partners for our team?

Can you help us with the recruitment and reskilling of our internal team?