Top 70 SQL Developers in Warsaw

Decerto reviewed third-party API docs to custom build and test integration projects for a business services company. Using the client's flagship software, they implemented authentication mechanisms, timeout parameters and data validation. Decerto's templates have significantly reduced the time required for users to accomplish their use case, which has led to multiple customer deals.

“The team demonstrated keen documentation skills, navigating new territory in a systematic way. The team provided daily updates and tracked their work carefully. The project manager regularly offered helpful advice on how to communicate more effectively using Jira, Slack, and other communication tools.” – Product Manager, Business Services Company

An automotive company hired Deviniti to develop a mobile app, available in both Android and iOS, for their customers. Deviniti developed the mobile application server and connection to the company's main server, and did the coding, the testing, the UX development, and the overall project management. The project was completed and Deviniti met all expectations with the successfully launched app that is now used by many users.

"We appreciate most of all the adjustment to the requirements and operational efficiency." - Product and Process Specialist, Automotive Company

createIT.com recently worked on platform development for an e-commerce solutions business. They conducted software development on the platform for that client.

“It's a very open-minded and valuable partnership. They have outstanding skills, and they’re a dedicated team. ” — Managing Director, E-Commerce Solutions Business

 

A household goods provider hired e-point SA to take over the development of their e-commerce system while taking into account its effect on overall operational and technical areas. As part of the engagement, e-point SA eliminated the provider's technological debt, implemented various optimization techniques, and developed the provider's online store on SAP Commerce, which is known for its stability, security, and international e-commerce support. They also provided their proprietary e2m storefront and CMS ActiveContent solutions in building the system. e-point SA completed the project which resulted in 178% more transactions and 370% more revenue, among other significant growth metrics.

"Providing intuitive purchasing process across devices quickly produced measurable effects." - E-Commerce & Marketing Manager, Household Goods Provider

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
 

A financial services company hired 3e Software House to develop the frontend system of their individual client app from scratch. The engagement also included maintenance and ongoing development of the application as well as virtual server maintenance. The technology 3e Software House used were PostgreSQL for the database and PHP and Yii for the framework, which was later updated. The app was successfully launched and meets all requirements and expectations.

"The project management has been always very efficient," - CFO and COO, Financial Services Company

JAVEO modernized a call routing application for an auto and property insurance company. Their work resulted in a fully operational system.

“We cooperated well together, and the project progressed very well.” - Director, Link4

A financial services company hired Isolution to develop software that would simplify and help manage their company's organizational structure. The software solution would handle tasks like define team compositions, managing employee files, handle employee requests, create and assign competencies and responsibilities, register fixed assets, and manage stored documents. Isolution completed the project and met all expectations.

"Implementing the solution provided by Isolution allowed for optimizing the processes throughout the entire organization." - IT Manager, Financial Services Company

InterSynergy updated a quiz game web app and built an additional web app optimized for mobile devices. They used AngularJS and WebSocker technologu. Their work reduced defects in the original app, while the mobile version allows players to get the game on the go. The team worked hard and communicated well. They’re a reliable partner.

“Their primary responsibility was development according to our assigned specifications, but they assisted several times to improve UX issues and conceptually contribute to new features.” – CEO, Quiz Game Platform

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

ISCG recently worked on IT consulting for an engineering company. They provided consultation on the implementation of a mobile device management system for that client.

“Overall, our company is happy with their work. We have future plans to engage with them on more projects.” — IT Manager, Engineering 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

A music streaming service hired NVT to develop their platform. The platform allowed users to stream and download tracks from a library containing millions of songs. The team developed iOS, Android, and web apps. Their contribution allowed the client to become very successful shortly after launch.

"We created and launched the first commercial internet music store in Poland, which soon became the country's third most popular music portal." — CFO, Music Streaming Service

Brandmed provided digital marketing services for an online mental health marketplace. Key deliverables were website, social media content, photos and videos, blog content, and SEO improvements.

"I was very satisfied with their speed of work as well as their quality of work."

IT Touch developed web applications to simplify bidding and sales processes for a communications operator. They created product specifications, selected technologies, integrated APIs, and directed testing. The solution increased operational efficiency and generated significant engagement.

"...it was so successful that we have been successfully cooperating to this day." — Head of CRM Systems Management, Communications Operator

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

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

A consultancy company hired Move Closer to develop a new website with chat functionality. The team also provided design and content. The website can be translated into a variety of different languages to appeal to several target audiences. Move Closer continues to provide technical support.

"They remained patient even when we pushed them or failed to deliver what we promised. The team was polite, open-minded, and friendly throughout." – Office Manager, Consultancy Company 

AlterPage developed a web portal for an internet hiring agency using Phalcon. They implemented conversion requests, server infrastructure, and online streaming. The final platform functions well and bugs were fixed quickly by AlterPage.

“AlterPage has good knowledge of new trends in development and has a professional work method. The team was communicative and willing to answer questions throughout the process.” – General Manager, Internet Hiring Agency

Rebased developed several telematics applications for a firm that specialized in telematics hardware for vehicles. The applications enable clients to install a black box on a fleet vehicle, for example, that enables remote teams to track location, diagnostics, and other important information. The client noted that the quality of Rebased's programs earned them a large contract with an auto manufacturer and that their technical approach is particularly forward-thinking in terms of tools and methods.

"Rebased's work has had a great amount of impact on our business and has allowed us to focus more on research and development of new functionality." — Managing Director, Telematics Firm

Sidnet delivered performance improvement updates for a mobile app provider. The team provided several updates, including database query optimization. Their efforts helped make the app more reliable.

"The Sidnet team are true professionals." — Product Owner, Mobile App

Onwelo provided data and business intelligence support to a Multinational Bank, assisting in the different stages of BI development. The Onwelo team delivered the required results to the satisfaction of management. The engagement is ongoing. 

"We’re very pleased with the quality of the work they’re delivering." - Head of Data Integration and BI, Multinational Bank 

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 

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
 

LLInformatics provides ongoing maintenance for multiple software products, as well as ongoing feature development. To date, they've leveraged skillsets include database restructuring and app flow development.

"I’m constantly pushing to work more with them."

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."

Devapo provided application management and support for an airport. They were responsible for the stock and services management.

"The team was open to any ideas."

NOMA SOLUTIONS built a parking meter payment software for a car park company. Compatible with web and mobile platforms, the solution allowed users to locate parking lots and pay fees. NOMA SOLUTIONS' dev team kept up with dynamic project requirements, which made for a successful product.

"NOMA SOLUTIONS always kept tabs on changing regulations. They anticipated changes in the Android Google Store and rewrote the app to pass acceptance tests." – Advisor to Management Board, Car Park Company

A donation platform company hired AvoTechs to build the platform's end-to-end architecture in AWS. They also created specification and design documents that external developers can use. They are also responsible for the development of the company's website, the e-commerce plugins, and the entire dashboard. All these works exceeded the company's expectations.

"They are very flexible. Their simple and fast solutions for all critical areas are beyond our expectations." - CEO, Donation Platform Company

Sigmoidal worked with a web and mobile app development company to assist in building an iOS app that allows users to find unclaimed property around the US. The app had a complex frontend and was supported by Amazon Web Services. The layout was well-received by the client.

"In addition to meeting our specs, they provided invaluable suggestions to help improve the end product." – CEO, Website and Mobile App Development Company