Freelancers using C#

Freelancers using C#Freelancers using C#

Projects People

maxDnipro, 49000

Software Architect | From Idea to Production | 140+ Projects

$100k+: Earned

5x: Hired

5.0: Rating

100: Followers

Software Architect | From Idea to Production | 140+ Projects

Cover image for Making Mobile Chat Feel Instant & Native

Making Mobile Chat Feel Instant & Native

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27

Cover image for CrewTraka Mobile App Optimization

CrewTraka Mobile App Optimization

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68

Cover image for Open Source | Fluent Terminal for Windows

Open Source | Fluent Terminal for Windows

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47

Cover image for Maxsip Telecom | CTO working on scalable telecom solution

Maxsip Telecom | CTO working on scalable telecom solution

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46

.NET Developer | Sitecore, Kentico & Umbraco Expert

2x: Hired

5.0: Rating

7: Followers

.NET Developer | Sitecore, Kentico & Umbraco Expert

Cover image for Blytheco - Umbraco Full Site Build

Blytheco - Umbraco Full Site Build

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32

Cover image for Pinnacle Propane - Sitecore Content and Development

Pinnacle Propane - Sitecore Content and Development

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23

Cover image for PRG - Full Sitecore Build

PRG - Full Sitecore Build

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27

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Copenhagen, Denmark

AI & Software Expert for Advanced Industry Solutions

$1k+: Earned

1x: Hired

5.0: Rating

32: Followers

expert

AI & Software Expert for Advanced Industry Solutions

Cover image for RhinoGPT - A GPT Specialized For Rhino Software Development

RhinoGPT - A GPT Specialized For Rhino Software Development

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103

Cover image for Synchronous Evolutionary Optimization Solver For Rhino Compute

Synchronous Evolutionary Optimization Solver For Rhino Compute

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68

Cover image for Integrated Design For Manufacturing & AR-Aided Assembly

Integrated Design For Manufacturing & AR-Aided Assembly

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179

Cover image for We’ve been getting a surge of urgent requests for Agentic AI...

We’ve been getting a surge of urgent requests for Agentic AI consulting — and it’s exciting to see how fast the field is moving. Graph Technologies develops systems that combine reasoning, automation, and adaptability across real-world contexts — from games to financial trading platforms. We deliver high-performance, low-latency systems, focusing on keeping models fast, accurate, and cost-efficient — not just clever in theory. We’re preparing a set of whitepapers that share insights, benchmarks, and case studies from our recent projects — stay tuned on graphtechnologies.xyz (http://graphtechnologies.xyz) for their release. If you’re exploring agentic AI, automation, or intelligent integrations, feel free to reach out via Contra or at ryan@graphtechnologies.xyz (mailto:ryan@graphtechnologies.xyz) to collaborate or exchange ideas.

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proDnipro, 49000

From UX/UI design to full app development

19: Followers

From UX/UI design to full app development

Cover image for Really proud of how this

Really proud of how this project is turning out. Mobile gaming deserves a higher standard, and this is exactly the direction we want to push it toward. Dark atmosphere, cinematic visuals, optimized performance, and a smooth experience across most modern smartphones without sacrificing quality. We spent a lot of time balancing visuals and optimization so the game feels immersive even on mobile hardware. This is the kind of mobile experience we want to see more often in the industry.

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Cover image for LIMSCAPE: The Liminal Space Explorer

LIMSCAPE: The Liminal Space Explorer

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2

11

Cover image for Pocket Battles: NFT War

Pocket Battles: NFT War

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2

8

Cover image for Drift Runner: Racing Masters Game Development

Drift Runner: Racing Masters Game Development

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11

Harshit Bhandari

Game Developer | Prototyping, Mobile, AI & Multiplayer

Game Developer | Prototyping, Mobile, AI & Multiplayer

Cover image for Balance Master - Monogame based arcade game

Balance Master - Monogame based arcade game

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12

Cover image for Evolution lab touch based arcade game

Evolution lab touch based arcade game

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7

Cover image for Creature Lab Arcade Game Development

Creature Lab Arcade Game Development

1

14

Cover image for Quiz Clash arcade game with Unity

Quiz Clash arcade game with Unity

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7

Eduard Plotnychenko

From UX/UI design to full app development

13: Followers

From UX/UI design to full app development

Cover image for Polygun Arena Mobile Game Development

Polygun Arena Mobile Game Development

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3

13

Cover image for Cusspy Live Video Chat App Development

Cusspy Live Video Chat App Development

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2

8

Cover image for dotmoovs: AI Fitness & Diet App Development

dotmoovs: AI Fitness & Diet App Development

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3

Cover image for Stippl: All-in-One Travel Planner App Development

Stippl: All-in-One Travel Planner App Development

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7

Arkadiusz Staniek

proGrave, Netherlands

C#/.NET Desktop Developer building reliable Windows tools

New to Contra

C#/.NET Desktop Developer building reliable Windows tools

Cover image for New portfolio project: Data Importer

New portfolio project: Data Importer & Cleaner v1.0.1 Messy spreadsheets are easy to clean. Cleaning them safely, reproducibly and without losing track of what changed is the harder problem. I built a Windows desktop application that turns inconsistent CSV and Excel files into validated, cleaned and reusable datasets through a complete reviewable workflow: Import → Profile → Map → Validate → Clean → Deduplicate → Review → Export Built with C#, .NET 10, WPF, EF Core and SQLite. Engineering highlights: → immutable source data → before/after transformation evidence → separate validation and cleaning engines → deterministic duplicate detection → CSV, XLSX and SQLite export → 63 automated tests → zero-warning Release build → 50,000-row pipeline completed in 2.853 seconds → CI, coverage gates and automated release verification The complete project, documentation and Windows release are available on GitHub: https://github.com/Staniek-Tech-NL/data-importer-cleaner #dotnet #csharp #wpf #dataprocessing #softwareengineering

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Cover image for Development of Data Importer & Cleaner Application

Development of Data Importer & Cleaner Application

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4

Cover image for Reporting & Analytics

Reporting & Analytics

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5

Cover image for Activity Gap Reconstruction System for ETS2 Tachograph

Activity Gap Reconstruction System for ETS2 Tachograph

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5

Karachi, Pakistan

.NET Developer building scalable APIs, SaaS & business apps

New to Contra

.NET Developer building scalable APIs, SaaS & business apps

Cover image for Hotel Management System
A complete and

Hotel Management System A complete and user-friendly Hotel Management System designed to streamline daily hotel operations and improve overall efficiency. The system helps manage rooms, guests, reservations, room services, billing, and other essential hotel operations from a centralized platform. Key Features: 🏨 Room & Room Type Management 📅 Reservation & Booking Management 👤 Guest Management 🛎️ Room Service Management 💳 Billing & Payment Management 📊 Reports & Dashboard 🔄 Room Availability & Booking Status ⚙️ Easy-to-use Management Interface The system reduces manual work, keeps hotel operations organized, and provides staff with quick access to important information—making day-to-day hotel management faster, simpler, and more efficient.

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Cover image for Inventory Management System to help

Inventory Management System to help businesses manage stock and operations with ease. The system includes modules for categories, products, stock history, customers, and suppliers, along with purchase and sales orders to keep track of transactions. It also features detailed reports and analytics, plus a chart of accounts and accounting tools to manage finances in one place. A smart assistant is included to answer queries, generate quick reports, and provide useful suggestions. This system brings everything together to save time, improve accuracy, and make day-to-day management simpler.

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Cover image for Tracking Management System that helps

Tracking Management System that helps businesses monitor vehicles in real time and streamline job dispatching. The system provides live GPS tracking, route history, and status updates for every vehicle, giving complete visibility of fleet operations. Along with tracking, There is dispatch module where dispatchers can create, allocate, and monitor jobs from start to finish. The platform includes alerts and notifications for events such as Arrived, On Route, and completed jobs, ensuring quick response and smooth coordination.

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Cover image for The 340B Price Guide will

The 340B Price Guide will be a simple and reliable tool that helps hospitals, clinics, and pharmacies keep track of drug prices under the 340B program. It’s designed to make it easier for healthcare teams to see the right prices, compare costs, and stay compliant with program rules without spending hours digging through spreadsheets or confusing data.

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