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I help businesses build, improve, and maintain reliable .NET applications, APIs, and SaaS products.
I am a full-stack .NET developer with 6+ years of experience working with C#, ASP.NET Core, .NET Core, .NET Framework, ASP.NET MVC, SQL Server, JavaScript, React, Next.js, and Microsoft Azure.
I work on both new development and existing systems. That includes bug fixing, feature development, API integration, performance improvement, database work, cloud deployment, and long-term product support.
I have built and maintained admin portals, dashboards, reporting modules, SaaS applications, and business systems across multiple domains, including fintech, hotel, payments, transportation, logistics, and healthcare.
I am comfortable with both modern .NET applications and legacy systems. I can quickly understand an existing codebase, fix issues carefully, and add new features without breaking what already works.
My experience includes:
Backend development with C#, ASP.NET Core, .NET MVC, Web API
Third-party integrations and API-based systems
REST, GraphQL, gRPC, and service-based communication
SQL Server, MongoDB, Oracle, and other business databases
React, Next.js, JavaScript, jQuery, Bootstrap, and Material UI
Microsoft Azure deployment, maintenance, and cloud support
AI integrations using modern tools and APIs such as GPT, Claude, and Gemini
Clients hire me when they need a developer who can take ownership, communicate clearly, solve real business problems, and deliver production-ready work.
Whether you need a full-stack .NET developer, backend API engineer, integration specialist, or long-term support for an existing application, I am ready to help.
$35/hr
100%
Job Success
Available now
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⚡ If your system needs to scale, stay secure, and actually work under real-world pressure I’m the person you bring in.
I’m a Senior Full Stack Architect with 10+ years of experience designing and building enterprise-grade platforms, microservices ecosystems, and AI-powered applications.
I don’t just build features I design systems that don’t break.
💼 What I Help You Achieve
Most clients come to me when they face:
• A system that’s slowing down or failing at scale
• Poor architecture decisions causing long-term issues
• Need to integrate AI into real business workflows
• Backend that works… but isn’t reliable or secure
• A product that needs to go from MVP → production properly
👉 I fix these by building clean, scalable, and production-ready systems from the ground up (or improving existing ones).
🧠 My Core Expertise
🔹 Backend & Architecture (My Strongest Area)
• Java (Spring Boot, Spring Security, JPA, Hibernate)
• Microservices & event-driven systems
• API design & system integrations
• Performance optimization & reliability engineering
🔹 Full Stack Development
• Angular, React, Next.js
• Scalable frontend architecture
• Clean, maintainable UI systems
🔹 AI Integration (Where I Add Extra Value)
• OpenAI, LangChain, LlamaIndex
• RAG pipelines & semantic search
• AI agents & workflow automation
• Document intelligence systems
👉 I don’t just add AI I integrate it in a way that actually improves business outcomes.
☁️ Cloud & DevOps
• AWS architecture & deployment
• Docker & CI/CD pipelines
• Scalable, distributed systems
🏆 Proven Track Record
✔ 100+ systems delivered (enterprise + startups)
✔ 15,000+ hours of real-world development
✔ Long-term client relationships & repeat work
💡 How I Work (This Is Why Clients Stay)
• I think in architecture, not just code
• I focus on long-term scalability, not quick hacks
• I communicate clearly — no confusion, no guessing
• I take ownership from planning → deployment
• I build systems that are easy to maintain and extend
🎯 When You Should Hire Me
✅ You need a serious engineer, not just a coder
✅ Your system must be stable, secure, and scalable
✅ You want to integrate AI properly (not just hype)
✅ You care about long-term quality over shortcuts
🚫 Not a Good Fit If
❌ You’re looking for the cheapest option
❌ You need quick fixes without proper architecture
❌ You don’t value clean, maintainable code
🚀 Let’s Build Something That Lasts
If you’re building a product where performance, scalability, and reliability actually matter Send me a message with your project details.
I’ll quickly tell you the best way to approach it.
Associated with
Thinkitive Technologies Private Limited
$70/hr
100%
Job Success
$60K+ earned
Available now
Offers consultations
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Most integration projects don't fail because of technology. They fail because nobody mapped the actual process before connecting the systems.
$60K+ earned. 100% Job Success. Top Rated Plus. 38 completed projects. These aren't just badges, they're the result of building integrations that actually work, long-term, at scale.
I specialize in connecting complex systems, from enterprise platforms like Dell Boomi and MuleSoft to no-code tools like Zapier, Make, and n8n. Whether you're a startup automating your first workflow or an enterprise syncing mission-critical systems, I've done it at your level.
What sets me apart:
One of my longest-running engagements was a 600+ hour project automating Clio Grow (legal practice management), syncing matter status changes, applying checklists, and eliminating manual follow-up across an entire legal operations team. The client stayed for months. That's not luck, that's what happens when integrations are built right the first time.
Industries I work with:
Manufacturing & Industrial Equipment, Transportation & Logistics, Legal Services, Healthcare & Clinic Services, Renewable Energy & Solar.
What I've shipped integrations across:
✦ Enterprise platforms: Dell Boomi, MuleSoft (REST, SOAP, RAML APIs)
✦ Automation tools: Make, Zapier, n8n, Zoho
✦ Business systems: Salesforce, NetSuite, Clio (Grow & Manage), HubSpot, Oracle, SQL Server, Azure AD
✦ Comms & ops: Slack, Gmail, WhatsApp Business API, Microsoft Teams, Twilio, Notion
Case Studies:
▸ Legal Services, Clio & Make Automation:
Built automations for a law firm to reduce manual work inside Clio. One workflow monitored trademark filings and automatically sent client updates and deadline reminders, while another streamlined the litigation intake process by assigning tasks to the legal team as soon as a new matter was created.
▸ Manufacturing, Dell Boomi, Tipalti & IFS Cloud:
Developed a Dell Boomi integration that synced vendor data between IFS Cloud ERP and Tipalti. The automation eliminated manual vendor onboarding and kept payment details, contact information, and vendor records updated across both systems.
▸ Transportation & Logistics, MuleSoft, Dayforce & Motive:
Designed and deployed a MuleSoft integration between Dayforce HCM and Motive to automatically sync employee data. The solution also resolved a recurring daylight saving time issue that had been affecting employee punch times, making the system much more reliable.
How I work:
I don't just "connect things." I map your actual process first, your pain points, your data flows, your edge cases, then build automations that are error-handled, logged, documented, and designed to grow with you. Every project ends with clean handover docs so your team is never dependent on me to keep the lights on.
If your operations are bottlenecked by manual handoffs between tools, vendor onboarding that takes hours, data that lives in three systems and matches in none, or workflows that break the moment someone leaves the team, that's exactly what I fix.
Send a short description of what's slowing your operations down. I'll come back within 24 hours with how I'd approach it, what tools fit, and a realistic scope.
$25/hr
100%
Job Success
$200K+ earned
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🚀 I’m a Senior Full Stack Developer with 12+ years of experience building scalable, high-performance web applications, SaaS platforms, and custom business solutions.
🚀 I specialize in React.js, Next.js, Node.js, and Laravel development, delivering clean, maintainable, and production-ready code for startups, SaaS products, dashboards, marketplaces, and enterprise systems.
💻 My Core Skills & Technologies as a Full Stack Developer:
Frontend Development
React.js, Next.js, Vue.js, TypeScript, JavaScript, Tailwind CSS, HTML5, CSS3, Responsive Design, UI/UX Optimization
Backend Development
Node.js, Express.js, NestJS, PHP, Laravel, REST API Development, GraphQL, Server Architecture
Databases
MySQL, PostgreSQL, MongoDB, Supabase, Oracle
SaaS & Product Development
SaaS MVP Development, Dashboard Development, Admin Panels, Marketplace Development, API Integration, Scalable Architecture
AI Integration
OpenAI, ChatGPT API, AI SaaS Apps, Automation Tools, AI Chatbots, AI Workflows, LLM Integration
⚡What I Build as a React.js and Laravel | PHP Developer:
SaaS Platforms (MVP → Scalable Product)
Web Applications & Dashboards
Marketplace & Booking Platforms
AI-powered Tools & Automation Systems
Custom Admin Panels & CMS
API-based Applications & Integrations
🤝 Why Clients Work With Me as a Senior Full Stack React and Node.js Developer with Laravel | PHP hands-on experience:
Clean, scalable, and maintainable code
Strong architecture & full-stack expertise
Performance optimization & SEO-friendly builds
Reliable communication and on-time delivery
Experience with complex, real-world systems
If you're looking for a reliable full stack developer to build or scale your SaaS, web app, or AI-powered product, feel free to reach out — I’d be happy to discuss your project.
🔹 Keywords
React.js Developer, Next.js Developer, Node.js Developer, Laravel Developer, Full Stack Developer, JavaScript Developer, TypeScript Developer, SaaS Developer, AI Developer, ChatGPT Integration, API Development, Web Application Development, Dashboard Developer, Marketplace Development, Supabase Developer, PostgreSQL, MongoDB, Tailwind CSS, Frontend Developer, Backend Developer PHP
Oleksii N.
has worked
.
Associated with
Golden Team Soft
$6M+
earned
$27/hr
$6K+ earned
Offers consultations
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With over a decade of experience in Business Intelligence (BI) and Data Analytics, I have successfully designed and delivered a wide range of dynamic dashboards and key reports for organizations across diverse industries, including manufacturing, healthcare, aviation, banking, financial services, and consulting. My expertise spans BI tools like Qlik, Power BI, and OBIEE, with a strong emphasis on QlikSense’s full suite of analytics capabilities, including dashboard development, reporting, automation, and advanced data visualization. I am highly skilled in data modeling, which I believe is the cornerstone of any effective dashboard or reporting solution, ensuring clean, scalable, and high-performance data architectures. I also have hands-on experience in creating automated reports with Qlik NPrinting and utilizing Qlik’s powerful data integration and scripting features to streamline BI workflows. Additionally, I specialize in building operations-focused dashboards that drive business insights and support data-driven decision-making. My ability to deeply understand client requirements, coupled with a robust professional network, ensures I can deliver comprehensive end-to-end BI solutions that align with business goals and optimize operational efficiency.
Philippines
$30/hr
80%
Job Success
$100K+ earned
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Over 10 years of NetSuite Support experience handling various Product Areas. Experienced in Implementing CRM Components of NetSuite.
CRM SuiteGuru and Full NetSuite Expert.
$150/hr
$50K+ earned
Offers consultations
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I architect and deliver complete AI-powered production systems — from infrastructure design to live deployment — as a single senior engineer.
Over 15 years, I've built systems that process 1B+ records, powered 17+ specialized AI agents serving healthcare platforms at sub-500ms latency, and launched multi-agent orchestration pipelines used in production by enterprise teams.
**What makes this different from hiring 3–4 specialists:**
You get one senior engineer who owns architecture, backend, frontend, AI integration, and cloud infrastructure end-to-end. No handoffs between contractors. No integration gaps. No coordination overhead. One person accountable for the entire system working in production.
**Core capabilities:**
- **AI/ML Systems** — Multi-agent orchestration (Google ADK, LangChain), LLM integration and routing (Gemini, OpenAI), RAG pipelines with vector search, production AI automation
- **Full-Stack Development** — React/Next.js + FastAPI/Node.js, real-time WebSocket systems, scalable microservices architecture
- **Data Engineering** — Distributed pipelines processing 100M+ records/day, BigQuery analytics, Spark/Kafka ETL, PostgreSQL/MongoDB at scale
- **Cloud Infrastructure** — GCP (Cloud Run, Pub/Sub, Vertex AI, BigQuery), AWS (EC2, Lambda, ECS, S3), Terraform IaC, Docker/Kubernetes, CI/CD
**How I work with enterprise teams:**
Every engagement follows a structured process: discovery and architecture review → defined milestones with clear deliverables → focused sprints with documented progress → milestone-based delivery with client sign-off. I'm experienced with enterprise onboarding requirements including NDA/IP agreements, compliance documentation, and background checks.
**Recent enterprise-scale work:**
- Architected 17+ specialized AI agents on GCP with 98%+ reliability and sub-500ms P95 latency across 20+ API endpoints
- Built distributed data pipeline processing 1B+ eCommerce reviews across 87M products (100M reviews/day)
- Designed 22-agent AI orchestration system with QA loops, multi-model routing, and runtime sandboxing
- Launched 25+ automated trading systems handling 10,000+ requests per minute
**Available for long-term engagements. Timezone: UTC+8 (Asia) with flexible overlap for US/EU business hours.**
---
## Skills Tags (up to 20)
1. Artificial Intelligence
2. Machine Learning
3. LLM Integration
4. Multi-Agent Systems
5. Python
6. FastAPI
7. React
8. Next.js
9. Node.js
10. Google Cloud Platform
11. AWS
12. Data Engineering
13. ETL Pipeline
14. BigQuery
15. PostgreSQL
16. Docker
17. Kubernetes
18. Terraform
19. System Architecture
20. RAG Pipeline
---
## Key Changes from Current Profile (Enterprise Optimization Notes)
### What Changed and Why
1. **Removed all emojis** — Enterprise hiring managers and Upwork talent specialists scan profiles quickly. Emojis signal freelancer-tier, not consultant-tier positioning.
2. **Led with enterprise-relevant credentials** — The first two sentences now establish scale (1B+ records, 17+ agents, sub-500ms latency) rather than speed ("1–4 weeks"). Enterprise clients care about reliability and scale first, speed second.
3. **Added structured methodology section** — Enterprise clients need to justify hiring decisions internally. A documented process (discovery → milestones → sprints → delivery) signals you understand corporate engineering workflows.
4. **Signaled compliance readiness** — Explicitly mentioning NDA/IP willingness, background checks, and compliance documentation reduces friction in Enterprise onboarding (which takes 5+ business days).
5. **Replaced casual tone with consultant positioning** — Changed from "Let's talk" to structured availability language. Enterprise clients interact with vendors, not buddies.
6. **Removed the emoji-heavy tech stack list** — Replaced with categorized capabilities that match Enterprise search filters and hiring manager mental models.
7. **Added timezone and availability** — Enterprise clients operate across global teams. Stating UTC+8 with flexibility shows you understand their coordination needs.
8. **Skills tags optimized for Enterprise search** — Removed generic terms, added specific searchable keywords that Upwork's matching algorithm and Enterprise talent specialists filter by.
$20/hr
100%
Job Success
Available now
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Project, IT & Operations Manager | AWS Cloud/DevOps | CMS & GIS Developer
I’m an IT Project & Operations Manager with strong skills in Cloud Engineering, DevOps, CMS development, GIS mapping, and technical support. I help agencies and digital teams deliver projects efficiently with clear workflows, fast communication, and reliable execution.
🔷 Project Management & Operations
⭐ Managing IT/software projects from planning to delivery
⭐ Timelines, sprint/task management, resource allocation
⭐ SOPs, workflows, dashboards, KPI tracking
⭐ Tools: Jira, Trello, Asana, ClickUp, Notion, Slack
🔷 IT Support & Technical Operations
⭐ Windows/macOS/Linux, AD, Microsoft 365, Google Workspace
⭐ Troubleshooting, VPN, backups, remote support
⭐ Ticketing: Zendesk, Freshdesk, ServiceNow
🔷 AWS Cloud & DevOps
⭐ EC2, S3, Route53, CloudFront, ACM, ELB
⭐ CI/CD, GitHub automation, Docker deployments
⭐ Server setup, DNS, security & performance
🔷 CMS & Web Development
⭐ WordPress, Shopify, Webflow, Wix, Weebly
⭐ E-commerce builds, landing pages, site fixes
⭐ Maintenance, migrations, speed/security
🔷 GIS & Mapping
⭐ ArcGIS Pro, QGIS, ArcMap, ERDAS
⭐ Georeferencing, spatial analysis, geodatabases
⭐ Leaflet.js interactive maps, environmental/tourism mapping
💠 Why Hire Me
⭐ Multi-skill: Management + IT + Cloud + CMS + GIS
⭐ Clear communication & fast turnaround
⭐ Reliable, structured, detail-oriented
⭐ Experience with agencies, IT firms, NGOs & global clients
If you need a single professional who can manage projects, run IT operations, and handle technical tasks across Cloud, CMS, and GIS — I’m here to help.
Associated with
Arbob Tech Team
$90/hr
100%
Job Success
$30K+ earned
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Summary:
I am SAP Basis System Administrator and ABAP developer for enterprise customers.I have experience of SAP ERP, Solution Manager, PI/PO, Webdispatcher. Also I developed ABAP for Logistics modules of enterprise SAP systems. I have Bsc. and Msc of Computer Engineering.
- 20+ years of experience in SAP, including 4 full life cycle implementations for enterprise projects using a broad range of technologies (ERP, BW, Solution Manager, PO, Content Server).
- 5+ years of SAP Basis experience.
-13+ years of ABAP development experience (MM, HR, TEM, PM).
- Enterprise Architecture expertise.
- 5+ years of desktop programming experience with Delphi and C#
Technical skills:
-SAP AS ABAP installation/Upgrade/Configuration,
-SAP AS JAVA installation/Upgrade/Configuration,
-Sap ERP, Solution Manager Installation/Upgrade/Configuration, System Monitoring
-ABAP(MM, HR, PM, FI , non-SAP integrations ), OOP, BadI / Enh. Framework, SAP ATC, Performance Tuning, Desktop programming, Fiori, Webdynpro
-HANA administration
-SUSE Linux
-C#, Delphi
Personal/soft skills:
Social Commitment
Creativity
Organization
Communication
Team Player
CERTIFICATES:
S4/HANA Conversion and SAP System Upgrade - 2020
System Administration (SAP HANA) with SAP
NetWeaver 7.5 - 2020
ABAP with SAP NetWeaver 7.50 - 2020
SAP Sol. Man. Mandatory and Managed System
Configuration (7.2 SPS8) - 2020
SAP HANA 2.0 (SPS03) - 2020
$80/hr
100%
Job Success
Available now
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🏆 13x Salesforce Certified Architect | Enterprise CRM, CPQ & Integration Specialist
I don't just implement Salesforce — I architect scalable revenue platforms that connect CRM, data, AI and enterprise systems into one powerful ecosystem.
With 10+ years across Telecom, Energy, Insurance, Manufacturing and SaaS — I've delivered transformations that reduce operational costs, accelerate quote-to-cash cycles and turn CRM data into real business intelligence.
⚡ What makes me different from other Salesforce developers:
Most developers build features.
I build systems that scale — with clean architecture, deep integrations and AI-driven automation baked in from day one.
🎯 Core Expertise
Salesforce Platform
→ Sales Cloud, Service Cloud, CPQ, Commerce Cloud (B2B)
→ Experience Cloud, Data Cloud, Health Cloud
→ Salesforce Industries (Vlocity) — Telecom, Energy, Insurance
→ Agentforce AI Agents — workflow automation & intelligent operations
→ Einstein Analytics, CRM Analytics (SAQL, Dataflows, Dashboards)
→ Apex, Triggers, LWC, Aura, Visualforce, Flow, Process Builder
Integration & ETL
→ Boomi (Dell Boomi) — ETL pipelines, data orchestration, enterprise integration
→ MuleSoft-style REST/SOAP API architecture
→ AWS integrations (S3, SQS, SNS, Textract)
→ ERP, billing & order management connectors
→ Microservices architecture & event-driven systems
Full Stack Development
→ Backend: Java (Spring Boot), Python, Oracle PL/SQL
→ Frontend: React.js, Angular, Vue.js
→ Database: SQL Server, MySQL, Oracle DB, MongoDB, NoSQL
→ AI implementation: Agentforce, OpenAI integrations, intelligent document processing
CPQ & Revenue Architecture
→ Salesforce CPQ — custom pricing engines, discount frameworks, approval workflows
→ Vlocity CPQ & Order Management
→ Quote-to-Cash end-to-end architecture
→ Complex product catalog configuration
🏗️ Industries I've Delivered In
✦ Telecom ✦ Energy ✦ Insurance
✦ Manufacturing ✦ SaaS ✦ Healthcare ✦ Aviation
📊 What Clients Get
✅ Architect-level thinking on every project
✅ Clean, documented, maintainable code
✅ Business-first approach — solutions tied to revenue outcomes
✅ Clear communication & milestone-based delivery
✅ Long-term partnership mindset
🤖 AI & Intelligent Automation
I've built and deployed multiple Agentforce AI agents and AI-powered CRM workflows — helping enterprises automate service operations, sales processes and data pipelines while reducing manual workload significantly.
This isn't theoretical AI knowledge — I've implemented it in production environments across multiple clients.
🔗 Tech Stack at a Glance
| CRM | Salesforce, MS Dynamics 365, Zoho |
| Integration | Boomi, REST/SOAP, AWS, MuleSoft patterns |
| Languages | Java, Python, Apex, JavaScript |
| Frontend | React.js, Angular, Vue.js |
| Database | Oracle PL/SQL, SQL Server, MongoDB, NoSQL |
| AI | Agentforce, Einstein GPT, OpenAI |
| Cloud | AWS, Salesforce Cloud suite |
📞 Let's Talk
If you're planning a Salesforce implementation, CPQ rollout, enterprise integration or AI automation — I offer a free 30-minute strategy call before any engagement.
Let's turn your CRM into a revenue engine — not just a database.