Top Kotlin Developers

UX/UI Design & Mobile App Development for Retail Company

They work with an agile methodology, so it’s easier for them. Futured is very supportive, not only with development, but also with timelines. They’ve hit all the deadlines we’ve set and fulfilled everything we expected from them. All in all, everything has been excellent.

Mobile App Development for Sporting Goods Retailer

Most feedback was done through email. But after a while it got confusing and messy so we decided to switch to Slack. Much more useful. We receive frequent updates and the project manager is really easy to communicate with.

Mobile App Development for Car Manufacturing Company

They performed well from a project management perspective as they strictly adhered to the timelines. We used to communicate in person, but since the COVID-19 pandemic started, we mostly interacted through email.

Android & iOS App Dev & UX/UI Design for Health Services Co

Futured's work is part of a more significant solution we're working on, and it has been critical that they deliver on time because of market timing. The team has also stayed on budget, going over by only 10%, which is acceptable, and we've had no problems with it. Well, we've used Google Meet. Futured has also visited to run account management tours. We also communicate through Slack channels. We've also used Jira for project management. Their team has a lot of expertise in business, development, design, and project management, and they excel at thoroughly following up and challenging us, and we liked it.

Mobile App Dev for Healthcare NGO

The project management was exceptional; they met all our needs, even handling tasks that seemed almost impossible. Nothing posed a problem for them, and they exhibited a high level of professionalism and flexibility to ensure the successful delivery of every aspect. It fostered a highly collaborative and friendly environment.

Web & Mobile App Dev for Business Referral Platform

Two of the strengths we’ve experienced are their development and project management. Geniusee understood the business context, and they were able to run with it to perform tasks. They were also accommodating to onboard additional resources on short notice to help us meet goals and deadlines.

Mobile App Dev & UI/UX Design for Social Marketplace

We were most impressed with their unwavering commitment to deliver our goals and understand our vision. Droids On Roids was a young and creative team that delivered quality results and maintained an organized and collaborative partnership with us.

Product Design Workshop for Bank

Of the workshops we did with five companies, Droids On Roids led the best one. They had fresh ideas and a good understanding of what we do. Their ideas were really helpful for me, and I knew what direction to take. They had really helpful, creative people.

UX/UI Design for E-Commerce Company

Project management was fantastic. Everyone felt invested in the product & had an ownership mentality to go above and beyond to think of scenarios we hadn't considered as well as how to further obtain value. Team was amazing at sharing progress updates, presenting roadblocks that we could help with, and ensuring we had visibility & transparency throughout the engagement.

UI/UX Design for Mobile App Dev Company

The project management exhibited by this team was exceptional. They consistently delivered project milestones on time, ensuring a smooth and efficient process throughout.

Mobile App Design & Dev for Consultancy Co

I have been exceptionally satisfied with Urlaunched's project management, notably ahead of schedule. Our project manager, Tetiana, is one of the most professional I have encountered in my over 20 years in the field. Her listening and communication skills are outstanding, and she is proactive in offering valuable opinions.

Mobile App Dev for Legal Services Startup

Their project management provided the open communication I was hoping for while delivering on time, within budget, and mitigating any risks before they became issues.

Web Development for Meal Plan Company

They're great project managers. They're always available, and they're on top of any issues or bugs. The contract moves smoothly, and most of our communication is through Skype and text.

Mobile App Design & Dev for Transportation & Caregiving Co

Synergy Labs is very professional. They've done a good job meeting all the deadlines and my expectations, so I'm very satisfied. Moreover, they're very professional and have a great experience in the market.

Web & Mobile App Dev & Design for Laundry Outsourcing Co

Synergy Labs consistently exhibited outstanding punctuality and responsibility during our project. Their prompt delivery of quality work within the specified timelines showcased their professionalism and dedication. This dependable and responsible approach made Synergy Labs a trustworthy partner.

Web & Mobile App Dev for Nail Salon

Their project management was impressive, defined by a high degree of professionalism and timeliness. The team reliably met all deadlines, ensuring the project stayed on track. Their systematic approach and careful attention to detail were visible in every part of the project.

App Redesign & Development for Family Organizing App

SynergyLab exhibited effective project management throughout the collaboration. Their responsiveness to our needs was commendable, with prompt communication and proactive problem-solving. Overall, their professionalism and commitment contributed to a smooth and efficient collaboration experience.

Mobile App Redesign & Dev for Financing Application Provider

Synergy Lab was providing excellent service and management, consistently delivering on time, responding swiftly, maintaining clear and fast communication, completing tasks quickly, and demonstrating a professional approach.

Mobile App Dev & UI/UX Design for Healthcare Technology Co

Their project management is generally very good, especially in planning and delivering work. The team is quite good at collaborating with our team. Since we do the backend and they work on the frontend, our project requires quite a bit of coordination, and they’ve been good at helping us manage this process.

Software Development Kit for Engineering Company

We worked with nomtek in an agile approach by sprinting with daily stand ups, planning and retros. We held additional backlog refinement meetings to talk over tasks and assign them a story point measurement.

Mobile App Development for Driving School Platform

They really shine in this area; project management has been exceptionally well. They’re proactive, and the team constantly reaches out to check for any issues. We have a virtual office in Graviton, do Zoom calls, and use Slack to communicate.

Ruby on Rails iOS Dev for Health & Fitness Platform

We valued the project management from the start. We’re really big believers in continuous emphasis on collaboration and have a continuous chain of communication. There are multiple platforms that keep us organized, including Jira and Slack. It’s all very well structured.

Mobile App Dev for Event & Social Networking Platform

We use Jira for project tracking and keep in close contact through weekly calls and a lot of Slack communication. I usually communicate directly with the developers, especially with one frontend developer. Although he develops code, he also acts as a project manager since we don’t have a full-time project manager allocated to this project.

App Dev for Patient Communication Platform

We had really good contact all the time and we talked over Slack, phone calls, and in-person. There were no problems.

Mobility Dispatch System Dev for SaaS Product Dev Co

The team demonstrated excellent project management throughout the collaboration, consistently delivering on time and maintaining clear, effective communication. They have been highly responsive to our needs, quick to adapt, and very easy to work with. What stands out is their strong understanding of our business requirements and their proactive approach.

Web Platform for Fresh Food Product Distributor

They were easy to work with. They took responsibility for the work and knew how to talk to us as non-IT people, which was very helpful. They were also responsive, and if they needed something, they’d ask. If we weren’t performing, they pressed us for the information they needed, which was good.

Native Mobile Apps for Online Grocery Solution

I appreciate their passion for their work and commitment to delivering the best product possible in a limited timeframe.

Staff Augmentation Services for Software Company

Their pricing model and the flexibility to scale the team as needed helped manage the budget effectively. We were able to scale the team from 2 to 10 very quickly. TechnoYuga provides numerous advantages, including access to specialized skills like flutter, react, and AI, cost savings (Quite reasonable), faster time-to-market, and robust quality assurance. Their expertise and flexibility make them an ideal partner for mobile app projects and staffing needs.

Web App Development & UX/UI Design for Recruitment Agency

Technoyuga handled the project with a clear and professional approach. They were also highly adaptable to our evolving needs, making changes quickly whenever required. Communication was seamless—we never had to wait long for a response, and they were always open to feedback. They remained flexible, responsive, and committed throughout the project.

Custom Software Development for Strategic Consulting Company

Their project management is well-structured, communicative, and flexible enough to adapt when needed, it gives me confidence that the project will be successful and that they’re serious about delivering quality work. That kind of professionalism really makes a difference.

Mobile App Dev & Testing for Payment Platform

They’re highly skilled in programming. The whole team is passionate, determined, and responsible. NerdzLab delivers complicated functionality in a short timeframe with no bugs. Additionally, they’re highly client-oriented and cultivate a friendly environment that made us feel comfortable.

Mobile App Dev for Digital Projects Company

Delivery of assets outlined in RFP on time and on budget, with a high level of attention to detail and fostering of an open, collaborative relationship.

Ability to collaborate and attention to detail, particularly in design.

Platform Development for Freelancing Startup

We most appreciated Wolfpack Digital’s efficient pace and attention to details.

Application Optimization for Machine Tool Company

Tapptitude put time into explaining the process to me because it was my first time buying software. I didn’t know about the contracts and how they work. I had so many questions, but they have been patient in explaining them to me. Know what you like and be clear with what you need. I think it is a common problem in the software business.

Mobile App & Web Dev for Banking & Capital Markets AI Firm

We find them very easy to work with, they are proactive, and responsive to our requests.

Upgrade for Addiction Recovery Mobile App

TechAhead wanted to ensure the quality of the work. They were extremely responsive, accommodating, and easy to work with.

iOs Development for Construction Software Company

They were very helpful throughout the design, development, and testing process. TechAhead also had a very fast response time to questions and feedback. We found them very easy to work with. They are very understanding of minor changes as the project moved along.

Construction Site Reporting Automation App

We have a phone call every week and email 3–4 times every week. We also use Skype. They’ve been easy to communicate with, which surprised me. I haven’t worked with an international team before, so I was a little worried about language barriers, but it’s been a breeze.

Web Dev & UI/UX Design for Creative Collaboration Platform

What impressed me most about Bolder was their ability to truly understand the vision behind Producers Link and translate it into a functional product. They didn’t approach the project as simply completing a list of features but instead they took the time to understand what we were trying to build and why. Their communication, attention to detail, flexibility, and ability to deliver ahead of schedule really stood out.

Staff Augmentation for SaaS Startup

Direct access to the team. They are always available. Support, kindness Professionalism

iOS Design & Development for Music Producing App

Jelvix was able to design and develop the app exactly as it was intended, and launch it on the App Store. Based on several completed and approved app updates, I'm confident that their professionalism can't be matched.

Custom Software Development for Insurance Firm

Their project management technique is okay as they kept us in the loop all through the project and till now they still handled everything professionally. If there were any issues, they tackled it swiftly. Their technical expertise I must say is highly impressive as they handled the project effectively, they even provided ongoing maintenance.

Mobile App Dev for Bullying Support Program

Throughout this process, the team, with Florian at its head, proved to be open-minded and willing to adapt to our realities and pace. Our team was dedicated to testing every iteration, which was facilitated by the use of an agile-inspired framework. The whole team took our project to their own hearts, and went well above and beyond to satisfy our requests.

Mobil App Dev & UI/UX Design for Online Casting Agency

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.

Web App Development for Venture Builder

The team worked in a timely fashion but at the same time was flexible when we needed to adjust the scope. Every week we had a demo meeting when we could see the current state of the app and the progress made in the previous week. Engaged and professional team, good communication.

Platform Dev for Digital Venture Company

We had daily stand-ups with the entire team and also refinements once a week. The project was run transparently with good communication and pace of work. Everything in the project was implemented appropriately.

Web Dev for Food Company

What we appreciated the most was the constant communication during dailies and planning sessions as well as demo meetings. Thanks to that we felt safe at each stage of the project that everything would be delivered according to our expectations.

Development Support for Farm & Breeding Specialists

Communication was good. We met in person to go over the project before the development started. In every meeting, we were able to solve problems. They were always on time and the ideas they had to solve the different problems were very innovative.

Multiple Development Projects for MVP Development Firm

TRIARE, LLC is very professional. It’s not as if they just use a bunch of plugins and put them together. That’s what really separates their creative work and output from others. Their team has good skills. I’m super excited about working with them.

Multiple Development Projects for MVP Development Firm

Even when I give them rare specifics, they understood the expected outcome. Their team provides it in time. Even with very few instructions, they’re able to create magic.

E-Commerce Web Dev & UX/UI Design for Clothing Retailer

What impressed us most about TRIARE, LLC was their combination of technical expertise and a consultative approach. They didn’t just follow instructions — they took the time to understand our business, align the solution with our goals, and proactively offer valuable insights. Their high level of responsibility, clear communication, and genuine commitment to quality made them stand out as a partner, not just a vendor.

Software Development for Mobile Gaming Company

Steelkiwi’s project management is their best asset. They’ve been very helpful, flexible, and agile in changing their model a couple of times to help accommodate what we were trying to do. I’m in constant communication with a number of people from their team over Slack, and even though there is a time difference between us, they’re always very responsive. The rapport and communication that I’ve built with Steelkiwi are impressive. They’ve shown a great ability to adapt their processes to work with us, an American-based customer with a different time zone and a challenging product.

Multiple Dev Projects for Civil Engineering Firm

SteelKiwi has provided a professional service from top to bottom. The team has been responsive, helpful, and quick to resolve any issues that we encountered. They have been able to adapt to all the new technologies and environments which we’ve requested thus far. It's neat to find a team that can adapt so well to a variety of business requirements and have the level of consistent quality offered by SteelKiwi.

Trading Platform Dev for IT Consultancy & Outsourcing Co

They are proactive and have the ability to adapt quickly to technological advancements.

Custom Software & App Dev for Education Company

The team is adaptable, working hard to meet all the requirements. Overall, we’re satisfied with the partnership so far. We work in two-week sprints, which gives us the ability to shift requirements and schedules as needed.

Mobile App Dev for Travel Agency

They listened to my ideas and incorporated them effectively. Then they delivered any changes to me on time. Throughout the process, goals, budget, and timelines were made extremely clear. They were respectful of all my needs and my questions to understand the scope of the project.

Web & App Development for Education Platform Company

Designli has exceeded our expectations; our project is complex, and we came to them with a lot of ideas, but they’ve been able to understand our needs and are building a fantastic design with an organized and user-friendly interface. Their team is knowledgeable, friendly, easy to communicate with, responsive, and dedicated to every step of the process. Moreover, they commit to learning and understanding our business to provide professional suggestions, showing that they care about us.

Development Services for Career Placement Service

The culture of this company is unique because they always want what’s best for the client.

App Content Audit & Strategy for Bank

I’m impressed with the quality of their deliverables, communication, and teamwork.

Heroku Platform Update for Study Abroad Programs Company

NetGuru managed the Heroku upgrade project effectively, delivering all items on time. They were responsive to our needs, communicated regularly, and provided timely updates. Their structured approach and clear communication ensured that milestones were met and any issues were promptly addressed, contributing to the project's success.

Application Dev & UX/UI Design for Investment Advisory Co

The project was managed perfectly on Netguru's side. It was transparent with direct communication between all parts of the project and obviously with us as well. In general, all deliverables were delivered on time and with great quality.

Mobile App Design, Dev & Maintenance for Nonprofit Magazine

Very good communication, keeping the client informed on the process, flagging the issues. Since this is a pro bono work, it was clear that resources sometimes may not be available due to other (paid) clients.

Mobile App Dev Staff Aug for Healthcare Technology Company

Netguru’s project management was very good, and they were very accurate. Additionally, we both were very efficient in our communication, which was a big plus. We had a 15-minute meeting every morning to align on the tasks for the day.

UX/UI Design & Software Development for Cleaning Services Platform

Yes, they did an incredible job at communicating and meeting deadlines as well as tracking over a thousand requests, notes, and needed changes. Their communication, tracking, and delivery is unmatched. We found Olearis to be excellent listeners at the foundational level and throughout the entirety of the project.

Mobile App, Web App Dev & UI/UX Design for Software Dev Co

Olearis exhibited exemplary project management throughout the engagement. They consistently demonstrated a high level of professionalism, organization, and effective communication. Olearis ensured that we were well informed at every stage of the project, from initial planning to final delivery. This level of openness instilled confidence in their work and fostered a strong sense of trust in their capabilities.

Real Estate App Dev for IT Company

We used Slack as our main communication channel. We have weekly meetings and biweekly demos at the end of every sprint. The most important was a clear communication and efficient meetings.

Mobile App Development for Consulting & Software Development Firm

Olearis' ability to communicate effectively and always be on the same page was very helpful. They very rarely have to explain anything twice. They always understand where we're coming from and are very practical in every step of the project.

Mobile App Development for Language Services Provider

The project was managed by our side, since it was outstaff cooperation. What was your primary form of communication with Olearis? In-Person Meeting, Email or Messaging App. What did you find most impressive or unique about this company? Excellent communication throughout the process.

Custom Software Dev for Business Intelligence Platform

High levels of integrity across the entire team established a lot of trust up front. Flexibility when it comes to resourcing and billing is appreciated. Fantastic leadership and management shows; the individual contributors show the same integrity, responsibility and accountability.

Staff Aug, Web Dev & System Support for Online Printing Co

The measurable outcomes from the project demonstrate Dualboot's commitment to stability and reliability. They maintained uninterrupted operation of our proprietary, complex admin/ERP system for over five years without major outages or data loss, ensuring consistent business continuity. Furthermore, they built a long-term, trusted partnership—particularly through the work of developer Jose Bidegain—who became an embedded team member, ensuring secure handling of company systems and data. This close working relationship fostered a high level of trust and provided tremendous peace of mind, knowing our development and IT needs were in expert hands.

Web App, Web & Backend Development for Consulting Company

What impressed me most is how quickly they integrated into our team culture. As someone without a technical background, I needed partners I could trust completely with both technical execution and business understanding. They immediately felt like an extension of our team rather than external contractors.

Application Design & Development for Software Dev Company

I also like the team's openness and ability to incorporate changes according to my feedback. DianApps accommodates my schedule since I have two companies, allowing me to take more time to provide feedback. DianApps offers a cooperative journey. The project is a creative endeavor on my part, so we had an estimated timeline that has expanded because of my design change requests.

SaaS Platform Dev for Telecommunications Firm

The team is very receptive and completes work on time. This is evident from the sprints that are help and completed every 2 weeks. We have weekly discussions on tasks & project wise discussion with individual members.

iOS & Android App for Gamer Streaming Platform

They have a lot of insight and are always looking for new solutions. Still, they listened to our vision and did their best to accomplish what we wanted. They treat the project and our team with the utmost respect.

Mobile & Web App Development for Nonprofit Organization

3 SIDED CUBE is always highly communicative and delivers things when they say they will. Their testing team and process is great and ensures that production apps has as few issues as possible.

iOS and Android App Dev for Charity

The project managers have changed over the development but we've always felt that their communication has been good and easy. We have had regular meetings every 3 weeks so we can meet up virtually to discuss any concerns we may have. 3-sided-cube introduced us to a tool called BaseCamp.

Mobile App Dev for Environmental Nonprofit

Communication with them is great. Our standard line of communication has been Slack, and we are on there all the time. They are based in the UK, so there is a bit of a time difference, but they are usually pretty responsive even in their evening when it is our afternoon.

iOS Mobile App Dev for Personalized Children's Book Platform

We also had daily meetings through Slack. Everyone would be online simultaneously and submit their updates. That enabled conversations to take place in real time. We scheduled a call once a week to recap anything that needed to be addressed.

Mobile App Dev for Vision Screening Tool

If I have a question, they get back to me within a day. They’re prompt and friendly; I can call and talk to anyone there, and they’ll do their best to help me on the spot. We mainly communicate via Basecamp, phone, and Skype.

App Development for Food Delivery Startup

Wve Labs has offices throughout California as well as an international presence in London and India, which made it easy for us to reach people in the company outside of business hours, whenever we had questions or concerns. We've had great customer service throughout the development. Wve Labs' project coordinator was very friendly, efficient, and professional.

Mobile App Dev, Design & Marketing for Development Startup

The biggest thing that has impressed us is Wve Labs' personal touch. We didn't want a prominent app developer with whom we'd have no personal interactions. We've searched for a partner to interact with personally and daily, and that's precisely what we've received. Anthony has been excellent. We have his personal and work phone numbers. We can reach out to him anytime we have questions.

Website Redesign for Device Management Solutions Platform

They stood out for their adaptability and agility in offering efficient solutions. They responded quickly to issues and changes, resulting in minimum disruption to the project timeframe. Their ability to adapt and innovate in response to changing requirements was genuinely outstanding and set them apart from other service providers.

Subscription Platform Dev for Vehicle Software Solutions Co

Their project management strategy was structured and coordinated, which generated trust in our team right away. Regular communication channels made seamless cooperation possible, allowing us to offer input and handle problems quickly. Their adaptability and understanding were especially admirable, as they adjusted our changing demands with elegance and expertise. Despite the lack of a predetermined budget during our original engagement, they remained strong in their assistance, leading us through each stage of development with unrelenting devotion.

Mobile App Dev for Hair Loss Products & Services Company

The team managed the project through regular check-ins and responded well to feedback and changing priorities. They were collaborative and willing to make adjustments as our needs evolved. Some deliverables took longer than initially expected, particularly during testing and refinement, but they communicated with us and worked through the issues. They were willing to understand a complex product and adapt as we refined it.

Web App Dev & UI/UX Design for Software Company

Blink22 Tech Agency demonstrated exemplary project management throughout the Swyt project, showcasing efficiency and responsiveness across various key areas: Timely Delivery: Blink22 consistently delivered project milestones on time, adhering to the agreed-upon schedule and ensuring timely completion of tasks. Implementation Excellence: Blink22 demonstrated technical proficiency in the seamless implementation of proposed solutions, ensuring that the final deliverables met or exceeded Swyt's expectations.