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$60/hr
100%
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Frank Z.
has worked
.
Is your team losing hours to manual data processing, format conversions, or repetitive document tasks? I build the tools and scripts that eliminate that work: reliable, low-maintenance, and built to last.
With 20+ years of delivering automation and data solutions across industries, I turn complex requirements into clean, working software. Clients come back because the result actually holds up: no duct tape, no black box — just solid code their team can understand and maintain. I adapt the technology to your project (Python, C#, Java, XSLT, JavaScript), not the other way around.
What I deliver:
• Data Extraction & Conversion – Pull and transform data from XML, JSON, CSV, Excel, or legacy formats into PDF, HTML, Word/Excel, databases, or plain text — write once, publish everywhere.
• Document & Publishing Automation – XSLT transformations, single-source publishing pipelines, automated layout and content placement (including Adobe InDesign scripting).
• Workflow Automation – Scripts that eliminate manual steps, schedule processing, and enforce consistency across your data — so nothing falls through the cracks and no one has to babysit the process.
• Custom Tools & Utilities – Command-line tools and lightweight desktop apps (Python, C#, Java) for data processing, report generation, or system-specific tasks.
• System Integration – Connect disparate systems so data flows between them without manual intervention.
I communicate throughout — not just at delivery. You'll always know where things stand, and you'll get documentation so your team isn't dependent on me afterward.
If you have a data, automation, or document challenge, let's talk. I'll give you an honest picture of what's feasible and the smartest approach for your situation.
$40/hr
100%
Job Success
$30K+ earned
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Mohamed Z.
has worked
.
"Your repetitive manual task is a one button click."
Automation is not a nice thing to have in job, It is a business necessity.
Hello, I am a Top Rated Freelancer at Upwork specializing in Python development with 4+ years experience in coding, designing, and testing with the ability to implement GUI for python scripts. I am also a Microsoft Excel Expert with 12+ years experience.
My Top Skills are 📍Scripting 📍Data transformation 📍Data Analysis📍Data Entry 📍Data processing 📍Data manipulation 📍Data Mining 📍Data Scraping 📍Data visualization 📍Data Conversion from and to PDF/Txt/Word/Excel/Images.
I have the tools, Knowledge, and experience to most efficiently and accurately manage data.
I am an expert in using following tools and software: ✅Python ✅Excel ✅Acrobat ✅Pycharm ✅Pandas ✅Pyqt ✅Jupyter notebook ✅Google Colab ✅Microsoft office
I have proven experience in ✔Excel Data Reshapping ✔Excel Data visualization ✔Scripting and automation ✔Desktop application.
My work is characterized by precision and speed. I always show my respect to clients needs through the service I deliver. And I am always there even after the contract ends to assure everything is working as it should be.
Looking forward to your projects to make your Job needs more exciting!
Thank you :)
United States
$45/hr
100%
Job Success
$100K+ earned
Available now
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Sen C.
has worked
.
If your data is stuck in the wrong system, in messy files, or behind an awkward API, I can help. I turn complex data problems into working systems and usable deliverables.
I help clients move data between platforms, automate manual work, clean up unreliable exports, and build workflows that save time and reduce errors. Whether the deliverable is a program they can keep using, or a clean CSV, Excel file, report, or database, I can make it happen.
Most of my work is API integrations, ETL pipelines, backend automation, data processing, and data migrations. I'm at my best when the problem is not clean or perfectly defined. I'll solve that problem first.
I build data workflows that are meant to hold up in real use. I work with complex APIs, big JSON or XML data files, elaborate schema, folders full of CSV and Excel files, and large datasets where correctness matters. The result is a cleaner dataset, a dependable program, or a responsive and well-designed workflow.
If you need a dependable program, a solid new system, or a clean final dataset, I can help.
$44/hr
100%
Job Success
Offers consultations
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Sairem Romen K.
has worked
.
Warm Greetings!
Find the best minds across the globe. No Matter where we are!
We have a rate less than one-third of the rate you find in the USA, Europe, and Canada, but we deliver better quality than those working out there. We are committed, accountable, and you can count on us.
My name is Romen. Over the past 17 years, I’ve successfully supported numerous clients and companies in roles such as Product Owner for B2B Integrations, Lead Integration Architect, Project Manager, Senior Principal Consultant, Senior DBA, Senior EDI & API Developer for integration, Cin7 Specialist, Cargowise One, CargowiseNext and b2b & EDI-related projects across B2B, B2C, EDI, and API domains. I have served companies like Sherwin-Williams in their e-commerce support, EDI, and B2B enhancements, development, and onboarding of trading partners whose revenue is in terms of billions and trillions of dollars. Have served Stryker Corporation, D2L, Walgreens, Xpediator UK, Diesel, Carters, KIKCorp, Penguin Random House, US Foods, Amazon, Target, Eaton Corporation, and many 3PLs.
I’ve delivered multiple projects involving:
SQL DB updates, reporting, DBA Architecture, ETL Pipelines, API Integration
David Joines Integrations
SPS Fulfillment
SPS Testing and Certification
Spring Systems
Amazon EDI Integrations
Wlamart RetailLink
Sam's Club
Target
Kroger
The Home Depot EDI Integrations via a VAN provider like SPS Commerce.
Nexus API Integrations
Walmart EDI Integrations, Target, Kroger,
Walgreens, and 1000s of trading partner companies.
SPS Commerce -Fulfillment,
SPS Testing & Certification,
ECGRID
CommerceHub
Rithum DSCO
The Home Depot, Walgreens, Kohl’s, TrueCommerce, Shopify, ShipStation, ShipBob.
Salesforce, Sterling B2Bi, IBM Solid DB, Oracle SQL, Gentran, Logic Apps, Boomi, MuleSoft, BizTalk, Cin7 Omni, Cin7 Core, Xero, Oracle SQL, Azure, Jira, DevOps, Altova MapForce, XSLT, Liquid, Web EDI support and migration, and more.
I specialize in business workflow automation and integration with third-party or custom applications, including ERPs like Cargowise One, CargowiseNext, Cin7 Core, Cin7 Omni, SAP, SAP B1, Oracle JDE, and platforms like Shopify API integrations.
I’ve worked extensively with iPaaS platforms such as:
Azure Logic Apps
Azure Virtual Machines
Azure KeyVaults
Azure Integration Accounts
Azure Blob
Azure Vision
Azure AI Agents
Boomi
Cin7 Core & Omni
Mergeform/ MergeField Customisation
MuleSoft
Celigo
Integrator.io
Bubble IO - Apps Development Expert
Cleo CIC
Certified AWS Cloud Practitioner
Certified AWS Fundamentals of Machine Learning and Artificial Intelligence
Certified AWS Exploring Artificial Intelligence Use Cases and Applications
Certified AWS Responsible Artificial Intelligence Practices
AWS Lambda
AWS Step Function
AWS EC2 set up
AWS IAM
AWS S3
AWS B2B Data Interchange
🔧 Technical Skills & Expertise
Integration & Automation: EDI, API, Web Services, SOA, XPath, XSLT, JSON, XML, CSV, Flat Files
EDI Standards: ANSI X12, EDIFACT, HL7, HIPAA
EDI Transactions: 846, 850, 856, 855, 860, 864, 810, 820, 997, 999, 837, 834, 835, 270, 271, 276, 180, 204, 214, 210, 990, 940, 945, ORDERS, INVOIC, IDoc
Tools & Platforms: Gentran, Sterling Integrator, BizTalk, Tibco, Altova MapForce, SAP, Syspro, Boomi, Logic Apps
Protocols: FTP, SFTP, AS2, Connect:Direct, VAN
Industries: Retail, eCommerce, Supply Chain, Logistics, Manufacturing, Healthcare, Finance, Pharmacy
🧠 Training & Mentorship
I’ve trained over 30+ EDI developers who are now working in top MNCs globally. I also offer training in:
EDI & B2B Integration
Business Analysis
Mapping & Business Process Development
💼 Project Goals
I’m currently seeking well-organized projects from small to large companies. My objectives are:
Deliver solutions effectively and efficiently
Ensure cost-effective and reliable outcomes
Scale your business and mine through partnership
Sign NDAs and agreements for long-term collaboration
💡 Core Values
Continuous improvement
Adoption of new technologies
Clear and transparent communication
📌 Additional Skills
Adwords, Analytics, Web Design, Salesforce, CRM
Trading Partner Onboarding, BOTS EDI, Python, Workflow Automation
I’m excited to collaborate with both new and returning clients.
Let’s build something great together!
⚠️ Note: I work exclusively through Upwork and am looking for genuine clients.
Best Regards,
Romen
Associated with
Dsysinfo
$90/hr
100%
Job Success
$300K+ earned
Available now
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Jacek F.
has worked
.
I help scaling companies fix the exact moment when off-the-shelf software stops working — too many records, too much manual work, tools that cost more than they save, workflows too tangled for the team you have.
Two of my clients have generated over $1,000,000 in combined value working with me as their technical partner. I'm recognized by Upwork as top 1% talent (Expert-Vetted).
PROOF, NOT PROMISES
→ High Rock Studios — I embedded as a seasoned technical partner for 7 years, shipping 5+ six-figure projects at a 90% client ROI, without them adding a single developer to headcount.
→ Canadian Travel Platform — replaced a stack of expensive SaaS subscriptions with a custom-built system, cutting their software costs by $484k and giving them full ownership of the platform instead of a rented one.
WHO I WORK WITH
Companies that have hit the volume threshold where "just buy more software" stops being the answer:
* Marketing agencies that need senior technical capacity without the cost or risk of a full-time hire — I plug in as embedded CTO/developer, running point on integrations, custom tooling, and the technical calls that would otherwise sit on the founder's desk.
* Agencies running PPC and native ad campaigns at a scale where attribution breaks — I build the pipelines and dashboards that tie spend to outcomes reliably, instead of guessing.
* Businesses paying for SaaS tools that no longer fit — I replace them with custom-built systems that do exactly what you need and that you own outright.
* Any SMB that's outgrown its systems — too many manual steps, too many disconnected tools, processes that only work because one person remembers how.
WHAT I BUILD
* Custom software & SaaS development
* Enterprise & internal tools
* Platform modernization / legacy rebuilds
* Systems & API integration (Airtable, CRM, Quickbooks, Zapier, and 100+ others)
* Workflow & business process automation
* AI integration — LLM integration, RAG, AI agents, document AI, prompt engineering
* Backend & full-stack development (Node.js, Laravel, PHP, Python, React, Next.js, TypeScript) * XML/XSLT data exchange systems
* PPC & native ad attribution pipelines
* Cloud & DevOps (AWS, GCP, Docker, CI/CD)
WHAT CLIENTS SAY
"Jacek and his team were by far the best external hire we've made. Extremely knowledgeable in all areas of their field. They were hard working, detail oriented, met all deadlines, and always willing to go above and beyond." — Dave Schleigh, President & Partner @ High Rock Studios
" worked with Jacek on a complex project developing a sophisticated elevator control system with a connected advertising system. Jacek and his team were always professional and completed the project on time and on budget. I have since worked with them on another 2 projects with the same great experience. I highly recommend their services." — David Winegar, Founder @ Absolute-North Ltd.
"Jacek is great to work with in every way. We have worked together for several years and he is professional, experienced, responsible, accountable and a great communicator. Jacek is a key part of our team and I would recommend Jacek to anyone." — Derek Elliott, Manager @ Private Villa Rentals
HOW I WORK
I act as a technical partner, not a task-taker. Programming is a tool, not the goal — the goal is your business working better. I take ownership of the technical side end to end so you can stay focused on running the company.
If your systems are starting to creak at the seams, message me. I'll tell you honestly, in one message, whether it's a real bottleneck or something you can safely ignore for now.
DON'T WAIT - REACH OUT NOW AND ASK ME HOW I CAN HELP YOU GAIN HUNDREDS OF THOUSANDS OF $$$!
Jacek Francuz
Founder @ Milestones IT
United States
$45.99/hr
100%
Job Success
$200K+ earned
Start of list.
End of list.
Over 20 years of experience in planning, developing and implementing various information technology and CRM solutions across Institutions.
Salesforce Certified Administrator.
•Over 5 years of implementing customized CRM solutions to various clients like Verizon, Allianz Re-Insurance .
•Automated Service, Sales and marketing processes using Salesforce Lightning flows, AI Agentforce and APEX/Visualforce
• Implemented core Salesforce modules like Sales, Service, Financial, Health cloud for small businesses using Agile/Scrum methodologies
• Integrated Salesforce with apps like Zoom, RingCentral, Box, Gmail using Zapier
• Utilized Webservices/REST API to integrate Salesforce with third party applications.
• Implemented Web to Lead, Web to Case and Email to Case channels.
• Created OMNI Channel and Web Chat for customer service.
• Built reports and dashboards to measure kpis.
• Imported data into Salesforce using tools like DataLoader and workbench.
• Implemented and created the full life cycle process for large-scale software development
• Identified architectural improvements resulting in increased product reliability and responsiveness to new feature requests
• Utilizing strong functional knowledge to drive product design
• MS (Computer Science) , University of South Carolina, Columbia
Salesforce Certified Administrator
Sun Certified Programmer for Java 2 Platform
Sun Certified Web Component Developer for Java 2 Platform
Sun Certified Business Component Developer for Java 2 Platform
Project management for IT Profession
TECHNICAL SKILLS
• Java, J2EE, Java Servlets, JSP, JNDI, JFCs, EJB’s, Java Script, AJAX, Web services
• Spring Webflow 2.5, STRUTS, Google Web Tool Kit, XML, XSL, ASP, .NET, Shell Scripts, JUnit
• WebSphere 8.5, Tomcat, Web Logic 6.0, IIS, Silver Stream App Server, JRun, JWS
• RAD 7.5, Eclipse, Visual Studio, JDeveloper, CVS, Clear Case, Stash, UML, Rational Rose
• Oracle 11g, D2000, IBM DB2, MYSQL, MS SQL SERVER, MS ACCESS, Toad
• Windows XP, IBM AIX and Unix (SUN SOLARIS 5.7), Silver Stream e-portal 2.2
• JIRA, Confluence, Cloud Services (PaaS), SalesForce Administration, APEX, Visualforce, LWC, AI Agentforce
United States
$100/hr
100%
Job Success
$400K+ earned
Available now
Offers consultations
Start of list.
End of list.
20+ years of professional development experience. Industry experience includes: Finance, Broadcast TV, Distribution & Transportation, Manufacturing, Oil Services, Non-Profit, Retail.
▬ Microsoft Full Stack Development
▬ Data Analysis, Data Modeling, Data Warehouse, Data Mart
▬ Data Integration, ETL, Data Quality
▬ Database Administration/Development
▬ SQL Server. SSIS, SSAS, SSRS, T-SQL
▬ PostgreSQL, MySQL
▬ Business Intelligence Solutions
▬ Software Development (.NET, .NET Core, MVC, C#, VB.NET)
▬ SAP Crystal Reports, Power BI
▬ Power Apps, SharePoint, Power Automate (Flow), Logic Apps
$15/hr
100%
Job Success
$30K+ earned
Available now
Offers consultations
Start of list.
End of list.
Hello, I’m Sukunj — Full Stack Web & Mobile App Developer | 14+ Years Building High-Impact Products
I help businesses build scalable SaaS platforms, CRM systems, and custom web applications that streamline operations, automate workflows, and drive growth.
With 14+ years of experience, I don’t just write code—I design and develop complete business systems used in real-world operations across industries like real estate, fintech, marketplaces, and enterprise platforms.
🚀 What I Can Help You Build
--> SaaS platforms (multi-tenant, scalable architecture)
--> CRM systems (lead management, deal tracking, automation)
--> Business process systems (ERP, dashboards, internal tools)
--> Real estate platforms (property listings, lead generation, CRM integration)
--> Marketplace & booking systems
--> AI-powered tools & automation systems
💡 What Makes Me Different
System Thinking – I understand business workflows, not just features
End-to-End Development – From planning → architecture → deployment
Scalable Solutions – Built for long-term growth, not quick fixes
Proven Experience – 40+ systems delivered across industries
Reliable Execution – Clear communication, on-time delivery
🧠 Technical Expertise
Backend:
-> PHP (Laravel, Yii, CodeIgniter)
-> Node.js, Python (FastAPI)
Frontend:
-> React.js, Vue.js, JavaScript, HTML5, CSS3
Mobile:
-> Flutter
Database:
-> MySQL, MongoDB,PostgreSQL
Integrations:
-> Stripe, PayPal (payment systems)
-> Twilio (SMS, calling, automation)
-> Third-party APIs & custom integrations
🏆 Notable Work
-> Developed multi-company CRM systems with role-based access, automation, and communication tools
-> Built real estate platforms with lead generation, property management, and advanced filtering
-> Created AI-powered tools and automation systems
-> Delivered inventory, marketplace, and enterprise platforms handling complex workflows
🤝 Let’s Work Together
If you're looking for a developer who can:
-> Understand your business
-> Suggest the right architecture
-> Build a reliable, scalable system
Then let’s discuss your project.
Associated with
Amcodr IT Solutions Private Limited
$10K+
earned
$50/hr
100%
Job Success
$20K+ earned
Offers consultations
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As a Director of Technology, Leonardo combines deep technical expertise with strategic leadership. He excels at building resilient backends, driving architecture decisions, and aligning technology with business goals.
Leonardo is a Senior Java Developer and AWS Certified Solutions Architect with 15+ years of experience designing cloud-native systems and leading cross-functional teams. He has delivered scalable, mission-critical platforms for high-growth startups and enterprises across Latin America.
🔹 Java, Spring Boot, REST APIs, Hibernate, Maven, Gradle
🔹 AWS (EC2, S3, Lambda, Route 53, CloudFront, IAM, CloudWatch, ECS, ECR, Load Balancers)
🔹 Microservices, RabbitMQ, asynchronous/event-driven architecture
🔹 MySQL, PostgreSQL, SQL optimization, Redis, Liquibase
🔹 CI/CD pipelines, Docker, Git, Bash scripting, Linux administration
🔹 Reporting & analytics: Tableau, Power BI, MyDBR, complex SQL views
🔹 Team leadership, agile delivery, digital transformation, mentoring tech teams
$85/hr
100%
Job Success
$400K+ earned
Offers consultations
Start of list.
End of list.
Leon H.
has worked
.
25+ years in Software Development
Available for 40-60 hrs./wk. Excellent references from CEOs of the companies.
Bringing products to market: inception, spec, architecture, implementation, testing.
Seeking for software development projects in the following areas on Windows Platforms:
- Recent successful GPT-3/3.5/4 API experience with C#, DALL-E interface, and OpenAI Whisper.
- Experience of developing RAG Web Service enabling chatting with private corpus of documents, based on Azure Cognitive Search SDK, Azure OpenAI API and Azure Cosmos Vector DB for vector, hybrid, and semantic search. Segmenting Word/PDF/Excel/CSV/Text documents, embeddings, and ingestion.
- Worked with ML.NET in VSTO Outlook Add-In environment for email classification.
- Experience with Text-To-Speech and Speech-To-Text using AWS, Azure, Google, Eleven Labs, and other vendors. Experience with Google Voice Services, including Diarization (recognition of different speakers and designation in the transcript), and Medical Transcription. Able to produce STS (Speech-to-Speech) application - interacting with ChatGPT over microphone and speakers.
Recent Development Experience of TTS with OpenAI.
- AI Training of basic GPT models using fine-tuning, and embedding techniques with vector databases, such as Pinecone, Qdrant, and Milvus APIs.
- OpenAI Completion and Embeddings API, GPT-3/3.5/4, Whisper API for Transcribing and Translation
- Azure Semantic Kernel, Azure Data Explorer (ADX), Azure Blob Storage, Azure Analytical Services.
- AWS Text-To-Speech, AWS Storage
- Web Services: REST-API, ASP.NET Framework and Core, WCF Web Services, Microservices
- Azure Active Directory Authentication from Desktop Applications in C#
- Desktop applications with C#/.NET Framework/.NET Core, WinForms, WPF, DevExpress
- Microsoft Office VSTO/COM Add-Ins for Outlook, Excel, Word, and PowerPoint
- Client/Server Systems: Sockets and high-level protocols, such as HTTP, FTP, MQTT
- Windows Services
- Microsoft Dynamics 365
- Hardware Interface: USB/RS232/RS485
Technologies and Frameworks:
- Languages: C#, C/C++, Python, MicroPython, XML, JSON
- Databases: SQL, SQLite, MySQL, Entity Framework 6/Core and LINQ.
- Networking: Sockets (.NET and Winsock), REST API, WCF, HTTP, FTP, MQTT, packet-level TCP/IP,
- Serial (RS232/RS485), MODBUS.
- IDE: Visual Studio 2010 through 2022
- Office Add-Ins: VSTO Add-ins for Outlook, Excel, Word, PowerPoint. Add-In Express Framework.
- VOIP: PJ SIP Stack with DBUS, Asterisk, Open Phone Abstract Library (OPAL)
- Active Directory/LDAP/ADSI
- Monte Carlo Simulations in C#
- Linux: C/C++ and Python with MQTT Development on Ubuntu and Raspbian.
- AES256 Encryption, Monte-Carlo Simulations, SHA256, PGP/GnuPG PKI (Public Key Infrastructure)
Application binaries signing (Authenticode), Security Certificate generation in code based on CA.
- Installers with Advanced Installer, Deployment strategies.
- Product Licensing