XML (eXtensible Markup Language) is a specialized language used for applications such as data exchange and web services, where structured communication is needed between legally, syntactically and semantically different systems. XML Developers are those with an in-depth understanding of the language and all its technical aspects. With an XML Developer, a client can structure their data, automate web service communication, optimize data analysis and transfer, format documents or integrate an XML API onto their system.

Here's some projects that our expert XML Developers made real:

  • Developed efficient solutions to process large volumes of data exchange
  • Created automated communication systems to ensure smooth operations
  • Optimized complex data analysis initiatives for better organization
  • Developed customized document formatting solutions to fit the client's requirements
  • Improved user interface design by integrating APIs into existing system

At Freelancer.com, our expert XML Developers have put their skills to countless projects with successful results. Clients have hired freelancers on Freelancer.com and trusted them to create innovative solutions while solving meaningful problems.

If you're looking for an experienced XML Developer to help develop, optimize or integrate your application or system, why not post a project on Freelancer.com to take advantage of our vast pool of talented developers today.

From 169,850 reviews, clients rate our XML Developers 4.91 out of 5 stars.
Hire XML Developers

XML (eXtensible Markup Language) is a specialized language used for applications such as data exchange and web services, where structured communication is needed between legally, syntactically and semantically different systems. XML Developers are those with an in-depth understanding of the language and all its technical aspects. With an XML Developer, a client can structure their data, automate web service communication, optimize data analysis and transfer, format documents or integrate an XML API onto their system.

Here's some projects that our expert XML Developers made real:

  • Developed efficient solutions to process large volumes of data exchange
  • Created automated communication systems to ensure smooth operations
  • Optimized complex data analysis initiatives for better organization
  • Developed customized document formatting solutions to fit the client's requirements
  • Improved user interface design by integrating APIs into existing system

At Freelancer.com, our expert XML Developers have put their skills to countless projects with successful results. Clients have hired freelancers on Freelancer.com and trusted them to create innovative solutions while solving meaningful problems.

If you're looking for an experienced XML Developer to help develop, optimize or integrate your application or system, why not post a project on Freelancer.com to take advantage of our vast pool of talented developers today.

From 169,850 reviews, clients rate our XML Developers 4.91 out of 5 stars.
Hire XML Developers

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    I have a complete SMS Backup & Restore XML archive containing approximately 20,000 messages spanning about 10 years between two Android users. This includes SMS, MMS, and RCS messages. Goal: Restore this conversation onto the OTHER participant's Android phone so that it appears as a normal conversation thread in Google Messages. Source: Samsung Galaxy S26+ SMS Backup & Restore XML archive Approximately 20,000 messages Mostly SMS Some MMS (photos/videos) Small amount of RCS content (can be converted to SMS if necessary) Destination: Samsung Galaxy S21+ Google Messages Challenge: The backup was created from my phone. Messages are stored from my perspective. To restore the conversation onto the other participant's phone, message ownership must be reversed: Messages I...

    $484 Average bid
    $484 Avg Bid
    110 bids

    PROJECT: Complete Gym Management SaaS (Laravel) We are looking for an experienced Laravel/PHP developer to complete and optimize our Gym Management SaaS platform. Current Status: * Laravel-based system already developed * Membership management working * Renew membership module working * Payment tracking available * Email notifications available * WhatsApp integration pending * Dashboard partially redesigned Required Tasks: 1. Membership & Subscription * Fix renewal workflow * Support upgrade, renew, PT packages, classes, and additional services * Maintain full membership history * Prevent old memberships from disappearing * Ensure only one active membership at a time 2. Payment & Transactions * Complete transaction history * Pending balance tracking * Partial payment suppor...

    $3 / hr Average bid
    $3 / hr Avg Bid
    60 bids

    I need the internal metadata in a collection of .docx files rewritten—not the Windows file properties, only what Word shows under File > Info > Properties > Advanced. The task is purely to modify three fields: • Creation Date • Modified Date • Total Editing Time I will send the documents one by one. For each file I will supply the exact values that should appear, and I expect the returned document to open flawlessly in Word with those new timestamps reflected. How you achieve this is up to you—Open XML SDK, python-docx, PowerShell, or another reliable method—as long as the text content stays intact and the new metadata persists after saving or sharing the file. Along with the updated documents, a short note (or script if you automate the ...

    $9 / hr Average bid
    $9 / hr Avg Bid
    9 bids

    I am rolling out Odoo in my business and want both the Inventory Management and Accounting modules fully implemented, configured, and fine-tuned to match our daily operations. Beyond the out-of-the-box setup, I need several custom features built directly inside the platform: • Custom reports and dashboards that will let my team track stock movement, valuation, and financial KPIs in real time. These must sit neatly inside Odoo’s reporting menu and respect user-level permissions. • Additional fields and forms within key screens—think product, partner, and journal entries—so we can capture the extra data points we rely on and keep workflows intuitive for staff. All development should follow Odoo best practices (studio/xml for quick tweaks, proper Python modules...

    $513 Average bid
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    94 bids

    Two hundred multiple-choice, single-answer questions are ready in a spreadsheet and now need to live inside my Moodle LMS. Your task is simply to transfer them, assign the correct answer for each item, and confirm that every question previews without error. All wording, options, and keys are final; no answer explanations are required. I am flexible on the method—manual entry, GIFT, or Moodle XML import—as long as the end result is clean, properly formatted, and sits in the course question bank I specify. Deliverable: a Moodle backup (or direct course access) showing all 200 questions correctly entered, categorized, and test-run so the right choice grades as 100 %. Future Opportunity: If the work is completed quickly, accurately, and professionally, there is potential f...

    $22 Average bid
    $22 Avg Bid
    40 bids

    I’m running a DHIS2 instance for a health programme and need reliable support for ongoing data entry and management. The work is entirely within DHIS2—importing routine service data, checking for completeness, running the built-in validation rules, and resolving any inconsistencies before the monthly reporting deadline. You should already know your way around DHIS2 data entry forms, the data import wizard (CSV/XML), and basic data management features such as bulk editing and metadata maintenance. If you can also create simple pivot tables or charts once the data are clean, that’s a plus, though the core focus remains accurate, timely entry. Deliverables will be measured by: • 99 % accuracy against validation rules • All assigned datasets entered and validate...

    $441 Average bid
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    29 bids

    Our small hospital relies on a XOOPS-based application that tracks newborn admissions, handles user accounts, offers data-entry forms for nurses, and produces routine reports. The original hosting provider deleted the entire install, and although I still have a backup of the source files and the Oracle + XML data sets, restoring them on a fresh server doesn’t bring the site back online—XOOPS throws errors before the front page even loads. What I need is straightforward: get the exact same system running again, with no new features added. Once everything is operational, the familiar user-management screens, data-entry forms, and reporting tools should behave just as they did before the deletion. Key points you’ll tackle: • Diagnose why the restored backup fails to r...

    $2017 Average bid
    $2017 Avg Bid
    103 bids
    Restore XOOPS Newborn App
    4 days left
    Verified

    Our small hospital relies on a XOOPS-based application that tracks newborn admissions, handles user accounts, offers data-entry forms for nurses, and produces routine reports. The original hosting provider deleted the entire install, and although I still have a backup of the source files and the Oracle + XML data sets, restoring them on a fresh server doesn’t bring the site back online—XOOPS throws errors before the front page even loads. What I need is straightforward: get the exact same system running again, with no new features added. Once everything is operational, the familiar user-management screens, data-entry forms, and reporting tools should behave just as they did before the deletion. Key points you’ll tackle: • Diagnose why the restored backup fails to r...

    $1942 Average bid
    $1942 Avg Bid
    122 bids

    JOB TITLE: Automation Developer — AI Pipeline Build (SignoSI) PROJECT OVERVIEW: Build a complete automation pipeline for SignoSI, an AI-powered strategic review platform. The system routes client submissions through four AI models APIs (OpenAI GPT-4o, Anthropic Claude, Google Gemini, Perplexity) and delivers a structured PDF report by email within 30 minutes. WHAT YOU WILL BUILD: • Airtable base: 3 tables, 56+ fields (complete schema provided) • Tally intake form connected via webhook • 5 scenarios: - Main pipeline: 14 modules, parallel API execution - Acknowledgement email - Outcome validation (scheduled daily) - Calibration shadow layer (monitoring) - Manual approval release • Documint PDF template (38+ placeholders, 15-...

    $284 Average bid
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    56 bids

    Developer with experience in Electronic Billing (DGII) (Dominican Republic) – Integration API Development Project Description We are looking for a developer with proven experience in electronic billing in the Dominican Republic to develop an integration API with the DGII (e-CF) that will connect our ERP/POS system to the test environment and subsequently to production. The candidate must have previously implemented integrations with the DGII and be familiar with the complete process of authentication, digital signature, and electronic invoice submission. Scope of Work The API must include: 1. Authentication with DGII * Obtain seed phrase * Sign seed phrase with digital certificate (.PFX / .P12) * Authenticate and obtain token 2. Generation and Signing of e-CF * Generate XML o...

    $340 Average bid
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    73 bids

    Junior Software Engineer (AI & Product Development) - USA Based * Junior Only We are an early-stage startup building AI-powered products and are looking for a motivated Junior Software Engineer based in the United States to join our growing team. We're not looking for someone who knows everything. We value curiosity, creativity, ownership, and a genuine interest in learning new technologies. If you enjoy solving problems, experimenting with ideas, and building things from scratch, we'd love to hear from you. **What You'll Work On** * Building and improving web applications and internal tools * Integrating AI/LLM APIs into real-world products * Developing backend services, APIs, and automations * Working with product and design teams to turn ideas into features * Tes...

    $20 / hr Average bid
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    99 bids

    ITS NEED TO BE DELIVERED ON SUNDAY .I NEED FREELANCER ONLY . BUDGET 2500 ONLY I’m enhancing an existing travel platform and now need someone who already knows their way around both the Travelport Universal API and a certified NDC flight API. My immediate goal is to wire up robust flight-search capability for domestic as well as international routes, then return clean, book-ready itineraries into our front-end. Here is what I’m expecting: • A single, reusable integration module that talks to both Travelport and the chosen NDC endpoint, merges the results, and hands back structured JSON we can render straight into our UI. • Clear handling of credentials, sessioning, and any supplier-specific quirks so that end users experience consistent response times and pricing...

    $71 Average bid
    $71 Avg Bid
    27 bids

    ITS NEED TO BE DELIVERED ON SUNDAY .I NEED FREELANCER ONLY . BUDGET 2500 ONLY I’m enhancing an existing travel platform and now need someone who already knows their way around both the Travelport Universal API and a certified NDC flight API. My immediate goal is to wire up robust flight-search capability for domestic as well as international routes, then return clean, book-ready itineraries into our front-end. Here is what I’m expecting: • A single, reusable integration module that talks to both Travelport and the chosen NDC endpoint, merges the results, and hands back structured JSON we can render straight into our UI. • Clear handling of credentials, sessioning, and any supplier-specific quirks so that end users experience consistent response times and pricing...

    $84 Average bid
    $84 Avg Bid
    35 bids

    I need the internal metadata in a collection of .docx files rewritten—not the Windows file properties, only what Word shows under File > Info > Properties > Advanced. The task is purely to modify three fields: • Creation Date • Modified Date • Total Editing Time I will send the documents one by one. For each file I will supply the exact values that should appear, and I expect the returned document to open flawlessly in Word with those new timestamps reflected. How you achieve this is up to you—Open XML SDK, python-docx, PowerShell, or another reliable method—as long as the text content stays intact and the new metadata persists after saving or sharing the file. Along with the updated documents, a short note (or script if you automate the ...

    $18 / hr Average bid
    $18 / hr Avg Bid
    26 bids

    Title: Senior Java Developer / Manhattan MIF Framework (Remote ) Budget: ₹60,000 per month Experience Required: 5 to 6+ Years Location: Remote Working Hours: 2:00 PM – 11:00 PM IST --- Job Overview We are seeking a highly experienced Senior Manhattan MIF / ProActive Developer to lead integration development and event-driven solutions within the Manhattan WMS (WMOS / Manhattan Active) ecosystem. The ideal candidate will have strong expertise in MIF, ProActive, and WMS integrations along with solid backend and database skills. --- Key Responsibilities - Design and develop inbound and outbound integrations using Manhattan Integration Framework (MIF) - Configure and manage integration endpoints, message queues, and XML transformations - Develop and optimize ProActive rules, alerts...

    $562 Average bid
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    25 bids

    RBI e-Kuber Integration Expert Required for IFMIS Project Project Description We are implementing an IFMIS (Integrated Financial Management Information System) and need an experienced consultant/developer who has previously integrated with RBI e-Kuber for Government Treasury or IFMIS projects. Scope of Work * Understand RBI e-Kuber payment integration requirements. * Review available technical documentation. * Assist in designing the integration architecture. * Provide guidance on payment file formats, XML schemas, digital signing, and SFTP-based exchange. * Assist with implementation of outward payment processing. * Guide the development of ACK/NACK handling. * Assist in Debit Notification (DN) and Return Notification (RN) processing. * Help design payment reconciliation and status tr...

    $11 / hr Average bid
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    14 bids

    I have a collection of images featuring plates that contain both numbers and alphabet characters. The plates are already labeled, but I need each annotation carefully validated and, whenever necessary, corrected. Your task is to open every image, check that the plate region truly matches the ground-truth label, and fix any inaccuracies you see so the dataset is production-ready. Accuracy is absolutely critical here—if a bounding box is off by even a few pixels or if a character has been mis-read, the file must be updated. I would like the final result to be a clean set of corrected annotation files (JSON or XML, whichever you prefer) plus the revised images, zipped and ready for model training. A brief change log noting the number of fixes you made will also help me keep track of ov...

    $19 Average bid
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    17 bids

    We are Sarkis AI Inc., an automation agency at the intersection of precision healthcare and business technology. We need a highly skilled developer (or small team) to build a robust event‑driven middleware that seamlessly integrates our GoHighLevel CRM with a bespoke AI‑powered decision layer. This is a full‑scope project with clear milestones – from architecture through deployment – not a piecemeal or consulting engagement. What You’ll Build Custom Middleware: A secure, scalable application (language of your choice) that receives and normalises CRM events via webhooks, stores them in a database, prevents duplicate processing, and makes decisions using deterministic rules and controlled AI logic. GoHighLevel Integration: Complete API integration to create/update contact...

    $1587 Average bid
    $1587 Avg Bid
    246 bids

    I need a small, reliable service that sits between Busy Accounting Software (desktop) and my cloud-based ERP. The goal is simple: every time my ERP creates an invoice, payment voucher, credit note or debit note the same document must appear in Busy instantly—no manual export-import, no delays. My ERP already exposes a well-documented REST API and its data lives in MySQL. Your task is to read the new or updated records, apply the correct field mapping (most fields match one-to-one, but a handful will need custom logic for tax and cost-centre breakdowns) and then push the payload into Busy through the method you know best—SDK, XML import, ODBC or any proven Busy integration technique. Key expectations • Sub-second or near real-time sync for invoices, payment vouchers and...

    $266 Average bid
    $266 Avg Bid
    71 bids

    Wir suchen einen erfahrenen Odoo-Freelancer oder eine Agentur, die uns bei kleineren Anpassungen und Optimierungen unterstützt. Die Aufgaben umfassen unter anderem: Anpassungen an bestehenden Odoo-Modulen Optimierung von Workflows und Reports Unterstützung bei der Pflege und Verbesserung unserer Odoo-basierten Webseite Beratung zu Best Practices innerhalb der Odoo-Umgebung Anforderungen: Nachweisbare Erfahrung mit Odoo Erfahrung mit Anpassungen von Odoo-Apps und Webmodulen Kenntnisse in Python, XML, JavaScript und Odoo-Framework Fähigkeit, Anforderungen schnell zu verstehen und umzusetzen Eigenverantwortliche und strukturierte Arbeitsweise Gute Deutsch- oder Englischkenntnisse Zeitrahmen & Budget: Projektstart: sofort Umfang: kurzfristige, projektbasierte Unterst&uu...

    $539 Average bid
    $539 Avg Bid
    79 bids

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