LeanCode

BACKGROUND

Introduce your business and what you do there.

I'm the engineering lead at Maingau Energie GmbH, a German energy supplier that offers electricity, gas, e-mobility, internet, mobile communications, and an online shop. We develop innovative, customer-oriented solutions for everyday life.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire LeanCode to accomplish for Maingau Energie's project?

We needed support building a new cross-platform customer energy app for web, iOS, and Android.

SOLUTION

What was the scope of their involvement?

We built a hybrid team of internal and external resources. LeanCode has supported us with UI/UX experts, engineers, and QA testers. The team has delivered UI/UX designs and Flutter code. LeanCode has handled the entire app development process, but we also have an internal engineer who works with them. We started from scratch with them, and they've also built CI/CD pipelines.

What is the team composition?

We've worked with 2–5 teammates from LeanCode.

How did you come to work with LeanCode?

Someone referred LeanCode to me, I already knew them for their open-source work and engineering know-how, and they were a great fit for both me and our internal technical team.

What is the status of this engagement?

We started working with LeanCode in April 2025, and our engagement is ongoing.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

LeanCode has delivered what we expected: a working software product that meets our business requirements.

How did LeanCode perform from a project management standpoint?

LeanCode always delivers on time. We communicate via virtual meetings and messaging apps.

What did you find most impressive about them?

LeanCode's technical expertise is great and much better than most other agencies; they're real experts. Moreover, their UI/UX experts have done a great job asking the right business questions and truly understanding our business needs.

Are there any areas they could improve?

I can't think of anything for LeanCode to improve.

BACKGROUND

Please describe your company and position.

I am the Engineering Manager of Solflare

Describe what your company does in a single sentence.

Solflare is a comprehensive, non-custodial digital wallet specifically designed for the Solana blockchain, allowing users to securely manage SOL, tokens, and NFTs. It offers a user-friendly interface for advanced features like staking, swapping assets, and interacting directly with decentralized applications (dApps).

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire LeanCode to accomplish?

• Feature Implementation
• Infrastructure Improvement

SOLUTION

How did you find LeanCode?

Online Search

Why did you select LeanCode over others?

• High ratings
• Good value for cost

How many teammates from LeanCode were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

Ongoing mobile app development and full integration with the team on site.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

We track progress and performance on a monthly basis, focusing on a holistic set of metrics rather than a single outcome. The Leancode team is fully integrated into this company-wide performance tracking system.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

We were responsible for project management and they for delivery. All deliverables were arriving consistently on schedule. They remained attentive to our requirements throughout the project, providing prompt and practical responses whenever our needs evolved.

What was your primary form of communication with LeanCode?

Virtual Meeting

What did you find most impressive or unique about this company?

Their Flutter knowledge is impressive, and they are constantly seeking to improve how they work.

Are there any areas for improvement or something LeanCode could have done differently?

If I were to offer a minor critique, there is some room for improvement in English language proficiency. Aside from that, I have no significant concerns to note.

BACKGROUND

Please describe your company and position.

I am the Engineering Manager of INFINIT

Describe what your company does in a single sentence.

Vertical banking services for SMEs, with AI-powered business tools.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire LeanCode to accomplish?

• Build MVP
• Active software development and maintenance
• Product management

SOLUTION

How did you find LeanCode?

Referral

Why did you select LeanCode over others?

• High ratings
• Great culture fit

How many teammates from LeanCode were assigned to this project?

6-10 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

Their involvement began with the design and delivery of our initial MVP, where they provided end-to-end engineering capabilities that enabled us to validate the product vision quickly and effectively. As our business scaled, LeanCode became a long-term partner, contributing both to the development of core features and to the evolution of the platform’s architecture. Beyond pure engineering, LeanCode also took ownership of product management responsibilities in one of the most strategic and complex domains of our application. They guided the product definition, coordinated with stakeholders, and ensured timely delivery of features critical to our business operations. Key deliverables included: A robust MVP that laid the foundation for the platform Continuous delivery of new features and improvements across multiple modules Contributions to technical architecture decisions, ensuring scalability and maintainability What has truly set LeanCode apart is not only their technical expertise, but their exceptional ways of working. Their level of engagement, sense of ownership, and collaborative spirit consistently exceeded expectations and distinguished them from other contractors we have worked with. They seamlessly integrated with our internal teams, proactively raised and solved problems, and always demonstrated a strong commitment to the success of the product.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

The collaboration with LeanCode directly contributed to several measurable outcomes that demonstrate the success of the partnership:

• Accelerated time-to-market: With LeanCode’s support, we were able to deliver our initial MVP within months, enabling us to validate the product vision early and start engaging customers sooner
• Platform scalability: Over three years, the platform successfully evolved from MVP stage to a production-grade solution supporting thousands of users, reflecting the quality and robustness of their engineering work
• Business-critical domain ownership: By managing a critical domain end-to-end, LeanCode enabled us to launch and operate one of the most complex and strategic parts of the business
• Consistent delivery pace: Their teams maintained a steady output of new features and improvements, allowing us to meet key business milestones
• Team effectiveness: Compared to other contractors we worked with, LeanCode’s level of engagement and proactive problem-solving reduced coordination overhead and improved overall delivery velocity

Describe their project management. Did they deliver items on time? How did they respond to your needs?

LeanCode’s project management has been exemplary throughout our collaboration. They consistently delivered items on time and demonstrated strong ownership of commitments, which gave us confidence in hitting critical milestones. What stood out was their ability to quickly adapt to shifting priorities and evolving requirements, always aligning their work with our business objectives.

They kept pragmatism at the heart of their approach, making the right calls when it mattered most: whether it was adjusting scope to ensure delivery, proposing a more efficient solution, or raising potential risks early. This pragmatic mindset, combined with transparent communication and a collaborative way of working, made them highly responsive to our needs and a reliable partner in the long run.

What was your primary form of communication with LeanCode?

Virtual Meeting

What did you find most impressive or unique about this company?

What impressed us most about LeanCode is their unique blend of technical excellence and product mindset. They are truly at the state of the art of modern software development practices, robust engineering standards, and efficient delivery methods. But what sets them apart is that they don’t stop at code: their developers consistently demonstrate a strong product sense, ensuring that every feature delivered creates tangible value for end users.

Equally remarkable is their ability to shape a standard within their teams, fostering developers who combine advanced technical abilities with a customer-oriented approach. This rare mix of skills made LeanCode not just a service provider, but a partner who elevated the way we build products.

Are there any areas for improvement or something LeanCode could have done differently?

N/A

BACKGROUND

Please describe your company and position.

I am the Head of R&D Wroclaw IoT&Frontends department of Viessmann R&D Center Wroclaw

Describe what your company does in a single sentence.

In January 2024, Viessmann Climate Solutions became part of Carrier Global Corporation. The combined expertise in the field of efficient energy and climate solutions, with a strong focus on quality and resource-efficient products, creates optimal conditions for a successful future.

As a part of Carrier, we will continue to develop technologies and solutions to meet the challenges of the 21st century.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire LeanCode to accomplish?

• Expertise
• Flexibility
• Experience

SOLUTION

How did you find LeanCode?

Referral

Why did you select LeanCode over others?

• High ratings
• Referred to me

How many teammates from LeanCode were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

Our company embarked on a significant project to transition our existing Android and iOS applications to Flutter.

We have completely streamlined boiler commissioning and moved the process to a user-friendly mobile app.

In a couple of simple steps, ViGuide will safely guide users through the process of commissioning a Viessmann boiler.

Even you are new to the Viessmann boiler model, the simplified app allows you to carry out the steps with ease, as efficiently as possible and in less time.

The app will guide you step-by-step through the commissioning process and thus ensures that all necessary commissioning steps are carried out completely and in the correct order.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

Successful implementation of Flutter architectural best practices by internal team: This demonstrates that the team is not just writing Flutter code, but doing it in a scalable and maintainable way, thanks to Lean Code's guidance.

Increased number of internal developers actively contributing to the Flutter codebase: This shows that the team is successfully adopting and learning the new framework..

We've seen a significant increase in the number of our internal developers confidently contributing to the Flutter codebase since partnering with Lean Code.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

Their technical knowledge was evident from the outset, and they consistently provided insightful solutions to the challenges we encountered. This was particularly crucial for our internal development team, which was primarily composed of developers transitioning from web and native mobile development to Flutter.

Lean Code's experience and guidance in this area were absolutely essential in navigating the intricacies of the framework and ensuring our team's growth. We particularly appreciated their proactive communication and their commitment to delivering high-quality results.

What was your primary form of communication with LeanCode?

• In-Person Meeting
• Virtual Meeting
• Email or Messaging App

What did you find most impressive or unique about this company?

The blend of deep Flutter expertise with their ability to effectively support and upskill a client's existing team during a major technological transition.

This was a critical undertaking, and we needed a partner with deep expertise and a reliable approach. Lean Code not only demonstrated exceptional proficiency in Flutter development but also proved to be a highly dependable and trustworthy team throughout the entire process.

Importantly, as our project is still underway and not yet released, we continue to benefit from their support, and we are confident that with Lean Code by our side, this will be a successful story.

Lean Code truly feels like an extension of our own team, and we wouldn't hesitate to recommend them to any company looking for expert Flutter development support, especially those navigating a similar transition.

Are there any areas for improvement or something LeanCode could have done differently?

nothing

BACKGROUND

Please describe your company and position.

I am the Head of Technology of NOS

Describe what your company does in a single sentence.

Leading Tech Portuguese company providing cutting-edge cloud, AI and telecommunications solutions, including fixed and mobile services, while also being the country's top film distributor and exhibitor, committed to innovation and sustainability.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire LeanCode to accomplish?

• Trainning
• Mobile App Development
• Consultancy

SOLUTION

How did you find LeanCode?

Online Search

Why did you select LeanCode over others?

• Great culture fit
• Good value for cost
• Flutter community presence

How many teammates from LeanCode were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

LeanCode was engaged as a partner to migrate natively developed applications to a cross-platform solution using Flutter. Their scope of work included training the existing team on Flutter best practices and large-scale project collaboration, providing technical consultancy to resolve challenges, conducting code reviews to ensure quality, and assisting with the integration of native components for Android, iOS, and web platforms. Key deliverables included upskilling the team, resolving technical issues, improving code quality, and ensuring seamless cross-platform functionality, resulting in a successful migration and a high-quality, unified application.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

The team’s enhanced skills in Flutter, combined with the seamless migration to a cross-platform solution, resulted in a high-quality application with consistent performance across Android, iOS, and web platforms. Improved code quality and streamlined collaboration further underscored the project’s progress, ensuring timely delivery and a robust, scalable product. These achievements reflect the project’s overall success and the effective transition to a modern, unified development approach.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

Working with LeanCode has been an exceptional experience. Their project management is highly professional, with clear communication and well-organized processes ensuring smooth collaboration. They consistently delivered items on time and demonstrated a strong commitment to meeting our needs, promptly addressing any challenges or adjustments required. The team’s dedication and expertise have made the project run seamlessly, reflecting their high level of competence and reliability.

What was your primary form of communication with LeanCode?

• In-Person Meeting
• Virtual Meeting
• Email or Messaging App

What did you find most impressive or unique about this company?

What stood out most about LeanCode was their commitment and availability. Communication was always clear and efficient, with no delays or misunderstandings. Beyond their technical expertise, they provided support on multiple levels, offering programming assistance and an out-of-the-box approach to solving our challenges. This dedication to go above and beyond made them a unique partner.

Are there any areas for improvement or something LeanCode could have done differently?

No. LeanCode consistently delivered work of the highest standard, and there are no notable areas for improvement. Their professionalism, expertise, and commitment ensured that every aspect of the project was handled exceptionally well.

BACKGROUND

Please describe your company and position.

I am the CTO of Avy AB

Describe what your company does in a single sentence.

Tenant Experience Platform

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire LeanCode to accomplish?

• Build Flutter App & Web
• Support React team members transitioning to Flutter

SOLUTION

How did you find LeanCode?

• Online Search
• Other

Why did you select LeanCode over others?

• High ratings
• Close to my geographic location
• Great culture fit

How many teammates from LeanCode were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

We partnered with LeanCode to assist in the migration of our mobile application from React Native to Flutter. During this process, we decided to extend the scope of the project to include a web application built in Flutter as well. LeanCode was hired to lead the development of this initiative and provide crucial support to our internal team during the transition. 

Their team played a key role not only in executing the technical aspects of the migration and development but also in onboarding and upskilling our existing team members in Flutter, ensuring a smooth handover and effective collaboration.

The LeanCode team demonstrated their expertise in Flutter and their ability to integrate seamlessly with our team, adding value both in development and team empowerment.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

Project is ongoing. All deliverables in the roadmap so far are delivered on time.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

LeanCode delivers items on time. There is a great communication where they communicate clearly and transparently.

What was your primary form of communication with LeanCode?

• Virtual Meeting
• Email or Messaging App

What did you find most impressive or unique about this company?

I'm impressed with LeanCode's Flutter engineers. High seniority among people with not that many years of experience on the paper.

Are there any areas for improvement or something LeanCode could have done differently?

Nothing I would change

BACKGROUND

Please describe your company and position.

I am the Executive Director of MMG ART PRODUCTION LLC ( MMG Talent )

Describe what your company does in a single sentence.

MMG Talent is the premier online casting agency/interactive talent database of models, actors, hostesses, influencers and performers - the one stop revolutionary interface connecting talent and clients.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire LeanCode to accomplish?

We partnered with Leancode to develop a sophisticated mobile app that seamlessly integrates with our online platform. The aim is to provide our users with a primary tool that simplifies profile creation, job applications, and management of the application process, enhancing efficiency and transparency throughout their journey.

SOLUTION

How did you find LeanCode?

Referral

Why did you select LeanCode over others?

• High ratings
• Great culture fit
• Referred to me
• Company values aligned

How many teammates from LeanCode were assigned to this project?

6-10 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

Our objective was to create a dual-platform mobile app using Flutter. Leancode, known for their expertise in Flutter, came highly recommended. We were impressed by their reviews and skill level. 

The project began with a UX Design Sprint, which led to our decision to engage Leancode for the full development based on their strong communication and design acumen. After successful beta launch to demo testers, we released to stores the MVP version of the app, and are now developing the full version with all planned functionalities.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

The MVP app launch has garnered very positive feedback, particularly for its user-friendly profile creation process.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

Leancode's project management was structured around bi-weekly sprints, which allowed for meticulous planning and regular refinement sessions to finalize features and tasks. While we established milestones well in advance, we encountered some unexpected bugs that necessitated slight adjustments to our final delivery dates. Despite these challenges, the team was proactive in addressing the issues and optimizing solutions in subsequent sprints. 

Throughout the project, we utilized a suite of communication tools, including Slack, Email, Jira, and Figma, complemented by consistent online meetings via Google Meet. This suite of tools facilitated clear and effective communication, which was key to our project's progression.

We were particularly impressed with the professionalism and communication prowess of the Product Owner. The UX designer demonstrated outstanding design and analytical abilities, while the QA team's dedication ensured quality control. Furthermore, the developers' expertise in Flutter was evident and greatly appreciated. Their collective responsiveness to our needs has been commendable, and we are quite pleased with the partnership's results thus far.

What was your primary form of communication with LeanCode?

• Virtual Meeting
• Email or Messaging App

What did you find most impressive or unique about this company?

LeanCode’s dedication, communication, and Flutter expertise have been most impressive, showcasing a commitment to both product improvement and partnership enhancement.

Are there any areas for improvement or something LeanCode could have done differently?

not really

BACKGROUND

Please describe your company and position.

I am the CMO of The Audio Bible. 

Describe what your company does in a single sentence.

The Audio Bible is an audiobook in the form of a radio play launched in February 2015 - lasting about 110 hours, being an audio adaptation of the most popular book in the world - the Holy Bible.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire LeanCode to accomplish?

• Mobile App Development
• IT&CX Consulting
• Marketing automation
• Web Development

SOLUTION

How did you find LeanCode?

Referral

Why did you select LeanCode over others?

• Great culture fit
• Referred to me
• Company values aligned

How many teammates from LeanCode were assigned to this project?

6-10 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

• Subscriptions: Regardless of payment source, users can access their accounts on different devices (with different operating systems). Pricing can be managed without app releases, allowing for differentiation prices among users/user groups. Prices for given users may be changed manually or by providing promotion codes to users. 
• Virtual bookmarks: In this case, we used Firestore to enable the storage of information. Users can mark their favorite chapters or see the last played part of the audiobook. The virtual bookmark will remember when a given chapter was paused in the listening session, and the user can continue from that moment the next time it is played back. 
• Multi-language content: The user can choose which language version they prefer (Polish, English, Spanish). The challenge was that from the backend server side, the content was structured uniformly regardless of the language version but depending on the user’s language preferences, we had to present the content differently.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

• Mobile app test versions

Describe their project management. Did they deliver items on time? How did they respond to your needs?

• Weekly meetings
• JIRA management
• AGILE project management

What was your primary form of communication with LeanCode?

Virtual Meeting

What did you find most impressive or unique about this company?

They keep their deadlines and their word.

Are there any areas for improvement or something LeanCode could have done differently?

faster resolution of minor technical errors

BACKGROUND

Please describe your company and position.

I am the Product Owner of Finelf.com (Kontomierz.pl)

Describe what your company does in a single sentence.

Finelf.com is a company specialized in making financial decisions easier. Our portfolio consists mostly of affiliate pages for products and services from financial field in Poland and other countries.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire LeanCode to accomplish?

• Development of the new version of Kontomierz.pl
• Development of new features
• New app design
• Mobile app

SOLUTION

How did you find LeanCode?

Referral

Why did you select LeanCode over others?

• High ratings
• Pricing fits our budget
• Great culture fit
• Good value for cost

How many teammates from LeanCode were assigned to this project?

6-10 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

1. Designing a new look&feel and improving the User Experience of the application. 

2. Recreating some of the features from the previous app version. 

3. Migrating data from the old version of the app. 

4. Implementing subscription payment options. 

5. Developing new features.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

• Creating a demo application and a new Kontomierz.co.uk website. Then systematically releasing more versions of the application along with monetization. Working on new features and implementing them.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

Working with LeanCode is at a very high level! Interviews and meetings go smoothly, the team is committed to the work and the project. The project is very well managed.

What was your primary form of communication with LeanCode?

• In-Person Meeting
• Virtual Meeting
• Email or Messaging App

What did you find most impressive or unique about this company?

Commitment and availability. No communication problems. Assistance on many levels, not only programming assistance, but also business assistance.

Are there any areas for improvement or something LeanCode could have done differently?

No. Everything is of a high standard!