Freelancers using SQL in WarsawFreelancers using SQL in Warsaw
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Tomasz Iwanski's avatar
Tomasz Iwanski
proWarsaw, Poland
+ 12 years Full-Stack & Data Engineer | CRM | AI Integration
1x
Hired
5.0
Rating
30
Followers
BUILDSHIP_EXPERT

expert

+ 12 years Full-Stack & Data Engineer | CRM | AI Integration
Cover image for CRUD API Workflow (Create Record) with Buildship
CRUD API Workflow (Create Record) with Buildship
0
4
Cover image for FaithAwake Alarm App Development
FaithAwake Alarm App Development
0
8
Cover image for Founder Portfolio — Product Builder & Co-Founder Website
Founder Portfolio — Product Builder & Co-Founder Website
0
9
Cover image for Sports Platform Website — Landing page Design & Full-Stack Build
Sports Platform Website — Landing page Design & Full-Stack Build
0
6
SQL(1)
Dima Umen's avatar
Dima Umen
proWarsaw, Poland
Web & Mobile Developer | React Node ASP.NET Vue React Native
13
Followers
Web & Mobile Developer | React Node ASP.NET Vue React Native
Cover image for Web platform for efficiency monitoring
Web platform for efficiency monitoring
0
7
Cover image for Brights developed a SaaS booking
Brights developed a SaaS booking platform for beauty service providers to replace manual scheduling through Instagram messages and phone calls. The platform allows customers to book appointments online, view real-time availability, and pay directly through the app. We built a seamless scheduling experience that simplifies appointment management for both clients and salon staff. The system also includes CRM features, notifications, payment integrations, and tools for managing specialists and services. A key focus was creating an intuitive user experience that reduces friction during booking and improves operational efficiency. The platform was designed to support scalability for growing salons and beauty businesses with multiple locations or specialists. Automated workflows helped reduce missed appointments and manual coordination efforts. By digitizing the entire booking process, the solution improved customer convenience while helping businesses streamline daily operations and increase booking conversions.
1
27
Cover image for The AVIS photo capture app
The AVIS photo capture app was built to standardize vehicle photography across rental, leasing, and return workflows. Brights developed a mobile solution that guides users through a structured photo-taking process to ensure consistent image quality and coverage. The app helps employees capture vehicle condition data faster while reducing human error during inspections. We implemented guided capture flows, validation logic, and seamless upload functionality to streamline documentation. The solution was designed to work efficiently in real-world conditions with different lighting, locations, and user experience levels. By automating and standardizing the process, the platform improved operational consistency across teams and locations. The app also simplified review and verification workflows for back-office operations. As a result, the client received a scalable mobile tool that accelerated inspections, improved documentation accuracy, and reduced manual processing effort.
1
30
Cover image for Brights developed an AI-powered consultant
Brights developed an AI-powered consultant widget that delivers instant, human-like responses directly on business websites. The solution helps companies automate consultations, answer customer questions in real time, and reduce support workload without sacrificing user experience. Built with intelligent conversation flows and contextual understanding, the widget can guide users through products, services, and decision-making processes naturally. The system was designed to scale across high volumes of conversations while maintaining fast response times and accurate answers. We also focused heavily on seamless integration with existing business workflows and CRM systems. The result was a scalable AI assistant that improved customer engagement, increased response efficiency, and provided 24/7 automated support.
0
33
SQL(1)
Francesco Stara's avatar
Francesco Stara
Warsaw, Poland
Insightful Dashboards: See Data, Drive Action
21
Followers
Insightful Dashboards: See Data, Drive Action
Cover image for Professional Power BI dashboard for an English E-Commerce
Professional Power BI dashboard for an English E-Commerce
1
23
Cover image for From Spreadsheet Chaos to Executive Clarity
From Spreadsheet Chaos to Executive Clarity
13
633
Cover image for Logistics: Power BI
Logistics: Power BI
2
80
Cover image for Using Excel for dashboard creation: Warsaw Weather Analysis
Using Excel for dashboard creation: Warsaw Weather Analysis
1
38
SQL(1)
Chris Gawlinski's avatar
Chris Gawlinski
Warsaw, Poland
I'll handle the entire project's tech side for you
I'll handle the entire project's tech side for you
Cover image for App development and consulting services
App development and consulting services
0
7
Cover image for Professional Consulting
Professional Consulting
0
3
Cover image for Social gambling platform
Social gambling platform
0
1
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SQL(1)
Tetiana Vinnytska's avatar
Tetiana Vinnytska
Warsaw, Poland
Data Analytics Expert
New to Contra
Data Analytics Expert
Cover image for Analyzed revenue lifecycle using cohort
Analyzed revenue lifecycle using cohort tables and MMR tracking. Visualized user payment behavior, retention shifts, and total revenue dynamics for data-driven growth.
0
25
Cover image for Comprehensive financial analysis across USA,
Comprehensive financial analysis across USA, EMEA, and APAC. Tracks ARPPU, Paid User dynamics, and revenue by software category to drive global growth strategy.
0
29
Cover image for Global Media & Entertainment Data Analysis: 25k+ Movies Dataset
Global Media & Entertainment Data Analysis: 25k+ Movies Dataset
0
1
Cover image for Developed a comprehensive SaaS analytics
Developed a comprehensive SaaS analytics system to track MRR dynamics and Unit Economics. Backend: Wrote complex SQL scripts (Window functions, CTEs) to transform raw payment data into monthly cohorts. Frontend: Built a Tableau dashboard for monitoring LTV, Churn Rate, and Revenue expansion/contraction. Result: Business can now identify exactly why revenue is changing and track customer lifetime value in real-time.
0
38
SQL(4)
Ibrokhimkhon Abbasov's avatar
Ibrokhimkhon Abbasov
Warsaw, Poland
Financial Analyst
Financial Analyst
Cover image for Financial Analyst at Citi Bank
Financial Analyst at Citi Bank
0
2
Cover image for Flight-Finder
Flight-Finder
0
2
Cover image for Pomodoro
Pomodoro
0
6
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SQL(1)