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Maksym G.

Maksym G.

AI Fullstack Developer | C# Java PHP Ruby | AWS Azure GCloud | Fintech

I am a Senior AI Full-Stack Developer with over 15 years of experience building applications using Java, C#/.NET, PHP, Ruby, and Angular for SaaS and enterprise companies. Currently, I run Inventorsoft, a software development agency specializing in web and mobile development. We use AI tools for development in order to deliver high-quality software faster. Why hire me: 📌 Expert in Software developemnt using: Java .Net PHP Ruby and other technologies - Over 15 years of experience in developing Java, .Net, PHP, Ruby, C#, Angular applications. Designed and delivered 200+ robust backend systems for SaaS and fintech projects, and enterprise level clients. 📌 Cloud-Native Platform Engineering Specializes in building secure, scalable, cloud-native platforms using leading cloud providers: - 8+ years of production experience with AWS, EC2, RDS and others - 9+ years of hands-on Azure expertise – Delivered enterprise-grade solutions with Azure App Services, Azure DevOps, and SQL/Azure Storage. - 5+ years of experience on Google Cloud Platform (GCP) – Built and deployed containerized microservices using GKE, Cloud Run, and Firebase. - Experienced in Docker & Kubernetes, enabling CI/CD pipelines 📌 Full-Stack Leadership & Agile Team Management - Led and mentored development teams of 5–25 developers - Run an agency with 100+ developers in total - Specialized in building cross-functional teams for backend-heavy systems, modern UIs (React, Angular, Thymeleaf), and DevOps automation. My latest achievement as a Software Architect: 🤝 Partnered with 45+ SaaS companies to design and deliver secure, scalable platforms using Spring Boot, AWS, and modern cloud services. 🚀 Helped 10 tech startups scale from MVP to production—selecting the right tech stack, defining cloud-native architecture, and assembling strong dev teams. 💼 Enabled 5 client acquisitions through the development of enterprise-grade software that attracted major buyers and investors. 🏭 Led a digital transformation project for a multi-billion-dollar oil company, delivering a secure, API-first platform that automated mission-critical operations. 🧩 Technologies I Specialize In - Languages/Frameworks: Java, C#, .Net, Spring Boot, .Net, PHP, Laravel, Ruby - Cloud Platforms: AWS (8+ years), Azure (9+ years), Google Cloud (5+ years) - DevOps Tools: Docker (7+ years), Kubernetes (5+ years) - Integration & Architecture: RESTful API integration, microservices, clean architecture, CI/CD pipelines Clients that I am proud of: 💻 Shoeby – A fashion retail platform focused on modernizing the e-commerce experience with intuitive UI, product personalization, and seamless shopping journeys. 💻 CellRebel – Provides advanced mobile network analytics, helping telecom companies improve coverage and performance based on real user data. 💻 Blade – A technology-powered aviation company offering urban air mobility services, including helicopter and seaplane flights. 💻 Matics – A real-time operational intelligence system for manufacturers, offering production insights and process optimization across the factory. 💻 MedischeScholing – A medical e-learning platform that enables healthcare professionals to access, register for, and track accredited training and certifications. ➡️ Learn more about other projects on the InventorSoft portfolio Keywords: Java, Backend, Developer, Fullstack, Web, Cross-Platform, Mobile, Application, AI, OpenAI, Service, App, Development, Engineer, Integration, Build, Website, Expert, Spring boot, MySQL, Development Team, Integrated, SaaS Platform, remote, Full-stack, Senior, Software, Client Management, GraphQL, API, .NET, Asp.net, Programmer, Technical Lead, Dashboard, MVC, Developers, ASP.NET, AspNetZero, core, software, MAUI, C#, Angular, .Net, Core, Principal, Performance, Scalability, Microsoft, Blazor, SQL, Server, Frontend, React, Ruby on Rails, RoR/React, front-end, Tailwind, feature, TailwindCSS, Technical Staff, JavaScript, ROR, PHP

🇺🇦Chernivtsi, Ukraine$25/hr100% JSS4.99 (31)Since Aug 2015

Earnings and projects

MRR
$49

Last 6 months ÷ 6

World#150,822 / 412k
🇺🇦Country#5,436 / 14.3k
Revenue, last 30 days
$0

Last 6 months: $297

Total earnings
$586k

Billed in all: $654k

World#1,988 / 412k
🇺🇦Country#171 / 14.3k
Per project
$9.3k

$297 in the last 6 months

World#17,405 / 412k
🇺🇦Country#1,218 / 14.3k
Projects, last 6 months
1
100% fixed0% hourly
World#128,096 / 412k
🇺🇦Country#4,718 / 14.3k
Projects in all
63

Across 70 contracts

24% fixed76% hourly
World#48,158 / 412k
🇺🇦Country#2,262 / 14.3k

Earnings, last 30 days

$654kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$640k$650k$660k$670kOct 9Oct 24Nov 8

Skill rankings: Top 17% in Hibernate

Ranked by MRR among everyone on Upwork with the skill.

  1. #60Core Java275 freelancers · 🇺🇦 #6Top 22%
  2. #118Hibernate677 freelancers · 🇺🇦 #18Top 17%
  3. #167Spring Framework880 freelancers · 🇺🇦 #20Top 19%
  4. #506Spring Boot2,150 freelancers · 🇺🇦 #30Top 24%
  5. #1,049Database3,249 freelancers · 🇺🇦 #36Top 32%
  6. #1,582Back-End Development4,183 freelancers · 🇺🇦 #114Top 38%
  7. #1,706RESTful API6,064 freelancers · 🇺🇦 #103Top 28%
  8. #1,962Java8,313 freelancers · 🇺🇦 #123Top 24%