Top 40 C# Developers in Warsaw

Itransition has cooperated with an insurance platform since 2017, helping them launch multiple products. They helped grow the project team to more than 60 professionals, including developers, business intelligence resources, and QA engineers. Itransition stays with the insurance platform to deliver ongoing improvements to their well-received digital projects.

"A key attribute they possess is the ability and willingness to provide valuable feedback and ideas. They're collaborative and flexible." – CTO, Insurance Platform

Euvic developed a small-scale desktop application for commodity traders in the British market. Over time, their work expanded to provide additional features and functionalities for their development product. 

"[Euvic] has proven easy to do business with which is a major benefit." – Owner, Commodity Trading Software Company 

Avenga built analytics databases for an insurance tech company. They analyzed and proposed improvements before executing on a new product from scratch. The client was impressed with the accuracy and easy movement of the data sets. 

"They always ask key questions and they have a vision of what our company is trying to do, and how they’re contributing to that effort." – Data Engineer, Insurance Tech Company

JCommerce worked on insurance platform development for an IT transformation company. They provided long-term web and mobile platform development services. They also built a new platform using Java architecture on the backend and JavaScript on the frontend. The client was impressed with the results of the project.

“We went live with the system and it’s now used by the end customer of leading insurance companies, which is significant a factor of success.” – Engineering Project Lead, IT Transformation Company

Software Mind was tasked by a navigation software company to assist in developing their platform that is used for ocean vessels. They greatly sped up the development process of the platform, using C# and WPF, and Postgres.

"They’re extremely flexible and easy to work with. You can have really good conversations with them, and they’re very knowledgeable about what they do. They have been great partners so far." - CTO, Navigation Software Company

ITMAGINATION served as a development partner to a corporate travel company. They mostly worked on an app’s backend but also provided frontend support and API integration services, while their DevOps resources did AWS migration and monitoring. ITMAGINATION’s involvement impacted the quality of the client’s products. 

“They’re a big part of our team with a major impact on the quality of our products.” – Engineering Transformation Manager, Corporate Travel Company

Altkom Software & Consulting does software management for an oil company. The client needed a user-friendly pricing tool, and Altkom Software & Consulting is building the tool with the features that fit the client's needs. The company also consistently communicates with the client. Since working with the company, the client is satisfied with the quality of their work and wants to continue the partnership. 

“Their work is of an extremely high standard in terms of design, management, and execution.”– Pricing Manager, Oil Company
 

CROSS sp. z o.o. provided custom software development services for a utilities company. The client needed a new system that would help make their business run more smoothly. CROSS sp. z o.o. built the system for the client’s employees; the system allows employees to do things such as sell products and make reports. The client has stated that this system is essential to the company.

“We can’t operate without this system.” —Director, Utilities Company

Ideo Agency partnered with a medical device company for web design and development project with ongoing support and maintenance. Additionally, the team also helps grow e-commerce shops and optimize ROI rates. Since their hire, Ideo has offered the best value compared to others in the industry.

“One of Ideo’s best attributes is an ability to adapt their workforce to meet our company’s needs.” — Digital Marketing Specialist, Medical Device Company

9BITS developed iOS and Android apps for a bike-sharing company. They integrated the app with the client’s core system, existing apps, Revel Systems, VPNs, and tunnel links for connections in certain cities. The client appreciated the level of quality that 9BITS put into their work.

“We’ve worked with 9BITS on projects in the past, and were happy with the quality of their work and ability to understand our business.” – Project Manager, Bike-Sharing Company

JMMJ designed and developed a mobile workflow application for a financial services company. They implemented an integrated and sophisticated calculation engine, and handled modifications and new features for later releases. The app is regarded as a game changer and was expanded to all business lines due to its success.

“JMMJ is an exceptional partner due to their ability to work expeditiously and remain adaptive. Their team is able to fill in the gaps when planning initial scopes, and always delivers on time.” – New Business Development Manager, Financial Services Company

RAD4M built an intranet solution for a power company using Microsoft SharePoint. They also helped create several project management systems for web and mobile. The client was impressed with their efficient, cost-effective deliveries. The new system provided a more fluid, dynamic way for employees to communicate with suppliers and customers.

“They are very efficient. RAD4M understands our goals, and we have a business relationship on a high level. Their team is good for the cost and they’re more efficient than other developers.” – IT Manager, Power Company
 

LeanCode developed a mobile app for a workplace fitness SaaS. The goal was to develop an app that was to be used by clients such as Google and Microsoft. LeanCode’s contributions to the app made it have a 4.4 rating.

“LeanCode taught us how to build a great product effectively.” - CEO, Workplace Fitness SaaS

Brights developed a CRM portal that tracked employees' KPIs; they designed the UX/UI. Consequently, efficiency and statistics tracking improved. 

"They are open to sharing ideas and discussing alternative solutions. They are also flexible in switching from one concept to another." – Manager of Business Intelligence, International Firm 

JMR Technologies developed a mobile fitness game. They used Unity to build out the backend, then they integrated GPS tracking, and allowed users to sign up through social media accounts.

"Our developer has managed the whole project and done a great job." Executive Sports Company

SoftProdukt provided development services, coding in a Django framework with Python for a data analytics company. They managed application analytics as well as UX/UI design efforts. They offered valuable expertise and produced deliverables efficiently. 

"Their capabilities and skills are very good." — Founder & CEO, Data Analytics Company

Uptime Development provides web development services for an Estonian consumer electronics distributor. The team has revamped the client's site, building the frontend using Vue.js and coding it with C#. 

"They’ve become pretty good partners, and we can communicate freely with them."

SvitSoft provided marketing and web development services to a real estate company. Their work also involved advertising, marketing research, and strategy. The team produced satisfactory results, and the partnership was successful.

“My budget keeps growing and I keep giving them new directions because I’m satisfied.” – CDO, Real Estate Company

ImpiCode developed a custom backend database from scratch to centralize content for a literary research institute. They built the product to host bibliographies and compendiums in one file format. The platform increased efficiency by consolidating materials in one system.

“...they, as a company, were available for our calls and questions at any time.” – Researcher, Literary Research Institute

Directpl provided app development services to a consumer goods company. These efforts included linking CRM services to the mobile app in order to facilitate customer intel to salespersons, among other features.

‘‘They delivered everything on time and budget.’’

Grad Agency recently worked on web development for a startup company. They designed and implemented a customized WordPress site  for that client.

“Their project management style was great. They had a clear team structure.” — CEO, Startup Company

IP Partner helped a tourism company improve the efficiency and speed of its web-based booking transaction system. The client was satisfied with their work, obtaining a system that's not only easier to use but also produced more bookings. 

"Our payment system and transaction system was working better." – Director of Marketing, Tourism & Leisure Company

A digital marketing company hired SotaTek JSC to provide software development and IT consultancy services. Following the company's specifications, SotaTek developed a software that enabled the company's team to track marketing analytics metrics and performance in company website and various social channels, including Google, Youtube, Twitter, Linkedin, keywords trackers. This software exceeded the company's expectations.

"A timely partner, SotaTek always worked in the fastest pace, met deadlines and encouraged direct communication with all team so that we can catch up daily. Reliable." - Digital Marketing Team Leader, Digital Marketing Company

A software company worked with Pragmasoft Sp. z o.o. to develop new software. In addition, they worked with the client’s in-house developers to integrate the software’s features. The client was impressed with the coding abilities of the employees at Pragmasoft Sp. z o.o.

“I’ve worked with many companies before, and Pragmasoft is the most easy-going one. We are very well matched. They’re agile, spirited, performance-focused, and committed to delivering great results.” – CTO, Software Company

Appstronauts partnered with an automotive company where they created a mobile app and a web app. The website they designed featured a more efficient way for the owner to conduct business online and reach more customers. The client appreciated how easy Appstronauts was to work with.

"I was so excited for my product; whenever a certain feature was completed, they’d automatically upload it to a server, thus making it possible for me to test it." – Owner, Automotive Company 

Madiff provided frontend and backend .NET programmer teams to an assistance company as SCRUM teams to help the internal team of developers enhance the company's core assistance system and web-based insurances selling portal. Madiff delivered on their tasks and met all expectations.

"Good quality of deliverables, effective work started after 2 weeks already (first 2 weeks needed to get familiar with local specifics)." - Local CIO, Assistance Company

Crystal Apps helped a parking management company develop a validation app. They built the iOS and Android solutions using React. It communicates with the parking barriers and cash machines.

"Everything was on schedule, which was important to us."

Vicson Digital provided assistance to an engineering company by developing an app that assists with engineering drawings. The app reduces the drawing process time by an hour or so.

"Project management was good. They communicated with us without delays and always were in touch." – Project Manager/Structural Engineer, Engineering Company