Hire the best XML Developers in Poland

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$40 hourly
Natallia K.
- 4.8/5
- (28 jobs)
Need a bespoke Drupal system that pushes boundaries? With over 15 years of experience across Drupal 6 to 10, I design and build complex, scalable solutions with custom logic, seamless API integrations, and cutting-edge AI capabilities. My 150+ projects prove I thrive on innovation. What I Bring to Your Project: - Custom modules with sophisticated business logic tailored to your needs. - Architecting intricate Drupal systems for scalability and performance. - Expert API integrations (REST, OAuth, social media, payment gateways, email platforms). - AI-powered integrations to enhance functionality and user engagement. - Deep expertise in customizing Search API for advanced, tailored search solutions. - E-commerce solutions with marketplace and accounting integrations (Russian platforms included). - High-performance enhancements and XML feed management. Key Achievements: - Optimized a Drupal site’s Google PageSpeed score from 40 to 100, enhancing user experience and SEO performance. - Built a custom email delivery system that increased user engagement for an e-commerce client. - Implemented AI-driven features for a Drupal site. Why Work With Me? - I turn ideas into robust, one-of-a-kind systems from scratch. - Complex challenges that require a lot of customization, are my passion. Let’s create something extraordinary—contact me for a free consultation!

XML
Customer Relationship Management
Website Customization
Amazon S3
Software Integration
RESTful API
Vue.js
Web Development
MySQL
Drupal
PHP
HTML
AJAX
jQuery
CSS
$50 hourly
Tomasz S.
- 4.6/5
- (9 jobs)
My interests are finance and its decentralization, hence I develop blockchain related projects, both as a developer and analyst.

XML
Truffle
XPath
XSLT
Data Cleaning
Finance
Data Migration
Data Management
JavaScript
Solidity
Blockchain Development
Blockchain Architecture
Bitcoin
Ethereum
Smart Contract
$60 hourly
Anatolii K.
- 5.0/5
- (7 jobs)
Totally I have: 19 years of experience in software development, 11+ years in Java development and design of web applications 8+ years of Management experience (Project Manager position and Team Lead). High level of communication, organization and negotiation skills

XML
Google Cloud Platform
Liquibase
JAXB
Continuous Integration
Web Application
Apache Maven
Hibernate
JUnit
Spring Framework
Spring Boot
Quartz
Java
Apache CXF
PostgreSQL
$58 hourly
Tomasz M.
- 5.0/5
- (4 jobs)
I have more than fifteen years of experience in programming - both back and frontend. For multiple years I have worked for a professional congress and conference organizer and as full stack developer created from scratch a system that has served many thousands of conference participants, with registration, accommodation or abstract submission modules. That system also successfully handled on-site registration with personalizing plastic and RFID cards and generating certificates. One of other systems created and designed from scratch is a system based on Laravel framework for a cardboard factory. Even two factories now with different production processes. This system allows to plan, mix and match orders on the fly taking into account different machines efficiencies and specification. Working in TDD methodology and Laravel framework is something that gives me great satisfaction and drives to learn new things. I'm a fast learner and have good problem solving skills. I have also worked fully remotely with clients from UK and Germany on multiple projects based on microservices, extensive APIs with DDD approach. I feel attracted to new technologies.

XML
API
Web UI
PHPUnit
Vue.js
AngularJS
CSS 3
jQuery
Smarty
MySQL
Laravel
Git
npm
JavaScript
PHP
$50 hourly
Mariusz J.
- 5.0/5
- (10 jobs)
Django / Java / JavaScript / XPages Developer Public repositories: https://github.com/mariusj/ http://www.openntf.org/Internal/home.nsf/profile.xsp?name=Mariusz%20Jakubowski

XML
HCL Notes
Vue.js
Dojo
JavaScript
HCL Domino
SQL
Django
Python
Java
$90 hourly
Jacek F.
- 5.0/5
- (48 jobs)
Do you need IT help for your business but find working with developers difficult? Are you struggling to achieve your business goals with the software you use? I'm here to take this burden off your shoulders so that you can focus on what you do best - your business. Programming, for me, is a tool only - not an objective itself. I will take care of all IT work and make sure it is aligned with your goals. Here are the ways I help companies thrive: • Building XML related systems — many times XML is the best choice for exchanging data, especially when you need to control the structure of nested nodes of data. I'll help you utilize the best of XML technology so it can effectively serve your business needs. • Design of tailored systems — when your business model that needs a boost with an automated, intelligent software. I'll work with you closely to understand the goals and build software that moves your productivity and profits to a completely new level. • Optimization of existing systems — when your software doesn't fully serve your needs. I'll transform it in the most effective way to keep all that is good in it and add the new value you are seeking. • Building a team - when you need to effectively achieve your IT goals. I'll find the best people that can achieve your goals within the budget and time. • Building a website - when you want to improve your online presence. I'll design a beautiful and fast website that brings you more clients and conversions. You will see a major increase in your productivity and profitability, your systems will start bringing you clients and money. With me, you get someone who understands your business and speaks your language - an honest professional whom you can trust. What clients say about my work: "Single handedly the best developer I have ever come across in my 15 years working in this industry. I cannot recommend Jacek enough. His professionalism, quality of work, delivery, communication are all of the highest quality. I will be putting more work Jacek's way." - Richard "I've already scheduled another project with Jacek. It's always a pleasure!" - Cheryl "Designed the page within my guidelines and requirements. Made front end elegant and functional. Back end was clean and user-friendly. Fantastic communication, extensive expertise. Will hire in future" - Vitold Technologies I work with: * XSLT, XPath, XML, XML Schema, exist-db, Apache FOP, Ibex, Xalan, MSXSL, Saxon, Dita, Docbook, EXSLT, XQuery, xsltproc, HTML5, XHTML, SVG, SpreadsheetML, WordProcessingML, lxml * GIS Systems: Google Maps, OpenStreet Maps, Gisgraphy, Geocoding, Leflet, Mapbox, FusionTables, OpenLayers, Geonames * PHP: PHP5, PHP7 * MySQL: optimisation, speed up, complex queries * API's: design and various integrations: Quickbooks, Expedia, Highrise, Airtable, Zapier, Google and many more, * JavaScript, ECMA6, React.js, Canvas * Drupal: Drupal 7, Drupal 8 * Wordpress * Apache SOLR * Chess: Stockfish, * ImageMagick, * CRM, * OSTicket Businesses I am usually a good match for: * Sport: tennis, chess, ski, freeride, snowboard, gym, fitness * Travel: booking engines, travel websites To take this chat to the next level, here's what you should do next: Let's see if we're the right fit. If you're looking for a tailored IT system for your business and a developer that will bring you a productivity boost and more results, we're aligned. To get the conversation started, hit the Hire Now button in the top-right corner. P.S. I travel a lot. No matter what country you are from, feel free to reach out - I may already know how to say 'hello' in your language! :) Jacek Francuz

XML
Laravel
GIS
MySQL
Drupal
Google Maps API
API Development
PHP
XSLT
API
Web Development
Node.js
JavaScript
WordPress
React
$60 hourly
Tigran K.
- 4.9/5
- (6 jobs)
Hey there, my name is Tigran. Being an experienced developer, I've built many large-scale web, mobile applications from the ground up, including a variety of chrome extensions, wordpress plugins, mobile applications which are currently being used by big companies like letoile and so on. I worked both as a remote developer in large foreign companies and in local offices in my country. I preserved high quality, readable code, always delivered results within their required deadline. I maintain good and clear communication with my clients and I am always open to and suggest improvements to make clients' experience as favorable as possible.

XML
Core Java
React Native
Android
Android App Development
Jakarta Server Pages
jQuery
Node.js
Desktop Application
JavaScript
$25 hourly
Piotr P.
- 5.0/5
- (30 jobs)
✅ Excel & VBA ✅ Python (data analysis, task automation, AI/ML) ✅ web development (JavaScript & React, HTML, CSS/Sass, XML/XSD, PHP, SQL) ✅ cybersecurity & computer networks ✅ AutoHotkey ✅ web automation (Selenium) ✅ RPA (UiPath)

XML
Back-End Development
SQL
HTML
Web Development
Linux
Data Processing
CSS
Visual Basic for Applications
UiPath
Data Extraction
Automation
Microsoft Excel
JavaScript
Python
$30 hourly
Aleksandra W.
- 5.0/5
- (0 jobs)
Technical Content Expert | 8+ Years Experience | Content Architecture | docs-as-code | MadCap Flare | DITA | Process Optimization | Strategy | First and only writer on your team | Clear and effective docs for startups I am a technical documentation specialist experienced in building documentation from scratch for technical and non-technical audiences in a variety of technical environments. From minimalistic guides to robust knowledge bases, from XML-based systems to docs-as-code, there is a solution for you and your audience. I will find it, plan it and build it with you.

XML
Static Site Generator
Git
MadCap Software
Markdown
Document Review
Management Skills
Content Planning
Information Architecture
Content Development
Content Audit
Documentation
$30 hourly
Yaroslav R.
- 5.0/5
- (4 jobs)
Hi there! I’m a senior Odoo developer with over seven years of hands-on experience building, customising, and implementing powerful Odoo solutions for businesses across a wide range of industries. I help companies streamline their operations, boost productivity, and drive growth with solutions tailored to their unique needs. Why work with me? Proven experience: I’ve successfully delivered projects of all sizes — from simple customizations to complex, full-scale ERP implementations. Technical know-how: Deep expertise in Odoo’s tech stack, including Python, XML, JavaScript, and PostgreSQL. Business-focused: I understand real-world business challenges and translate them into smart, effective Odoo solutions aligned with your goals. Client-first approach: I’m committed to clear communication, reliable delivery, and top-quality service throughout the project. Services I provide: Custom Module Development: Bespoke modules tailored to your business workflows. Full ERP Implementation: Comprehensive solutions to manage your entire operation. Integrations: Smooth integration with third-party tools and platforms. Migration & Upgrades: Hassle-free upgrades and migrations to the latest Odoo versions. Ongoing Support & Maintenance: Reliable support to keep your Odoo system running at its best. Tech stack & tools: Odoo (v8 to v18) Python, XML, JavaScript, HTML/CSS PostgreSQL RabbitMQ AWS Git RESTful APIs & Web Services Agile methodologies & project management Industry experience: Manufacturing Retail & E-commerce Logistics & Supply Chain Healthcare Professional Services Let’s work together! Whether you need a small customization or a complete ERP solution, I’m here to help. Get in touch and let’s talk about how we can use Odoo to take your business to the next level.

XML
RESTful API
API Integration
Database Architecture
Database Design
Database
PostgreSQL
Python
JavaScript
HTML
Odoo Administration
Odoo Development
Odoo
GitHub
CSS
$60 hourly
Piotr K.
- 0.0/5
- (0 jobs)
Solutions Architect with 30+ years of experience in the software industry both in Development as well as in Professional Services. Strong engineering professional with a Master of Science degree in Computer Science from the University of Houston, TX. And instead of yet another boilerplate blah blah blah intro let me tell that after 30+ years of working in the software industry I still enjoy coding, solving customer problems, and simply put - having and expressing honest opinions, not beating around the bush, and getting things done.

XML
Java Persistence API
Java Servlet API
Java RMI
JavaScript
SQL
Java
$30 hourly
Lizaveta P.
- 0.0/5
- (0 jobs)
Custom Magento 2 and Shopify Development. Hyva Theme customization expertise. Long-term collaborations and small fixes. Support and maintenance. - Full project management from start to finish - 2-month warranty after release - Regular and transparent communication

XML
Back-End Development
Front-End Development
Ecommerce SEO Audit
Joomla
WordPress
MySQL
API Integration
PHP
Laravel
Performance Optimization
Web Development
Shopify Development
Ecommerce Website Development
Magento 2
$10 hourly
Raman S.
- 0.0/5
- (0 jobs)
7 years of experience MYSQL, JAVA, BASH, PYTHON, XSLT, DOCKER, JENKINS API development(XML,JSON, SOAP, REST) Data transformation

XML
SQL
CSV
JSON
Python
XSLT
Java
Bash
MySQL
API Development
$28 hourly
Dmytro S.
- 0.0/5
- (0 jobs)
I am Oracle APEX Developer with 5+ years of experience on warehousing, logistics and financial projects as Oracle Apex developer / Oracle SQL developer / PL-SQL Developer including Senior, Technical Lead and Lead Developer positions. I am proficient in creating and maintaining Oracle APEX applications, developing new modules and updating existing ones, creating API services, parsing XML/JSON document, implement ETL solutions. My stack of technologies include, PL/SQL, Oracle Database, HTML, CSS, JavaScript, XML, JSON, REST API, AOP, utPLSQL, Git/SVN, ODI. I have two certificates of recognition 'Oracle APEX Certified Professional' achieved in 2023 and 2025. I'm skillful and well motivated

XML
Oracle Database
API
REST API
JSON
Oracle PLSQL
Oracle APEX
$7 hourly
Joanna S.
- 0.0/5
- (0 jobs)
3rd year Computer Science Student at UKEN University Cracow. Interested in subtitling and translating work.

XML
Microsoft Office
Microsoft Visual Studio
Autodesk AutoCAD
Database Architecture
SQL
SQL Programming
PHP
HTML
C++
C#
C
Java
Python
$35 hourly
Wilhelm O.
- 0.0/5
- (0 jobs)
I'm a software developer with spare time on the side. I like working with complex problems that require dedicated solutions. I'm interested in both specialised inquiries, and developing my own solutions

XML
SQL
POS Terminal Development
REST API
C#
Scripting
Multithreaded, Parallel, & Distributed Programming Language
Multithreaded Programming
Server
Desktop Application
Mobile App Development
Jira
Python
XQuery
C++
$35 hourly
Dzmitry V.
- 0.0/5
- (0 jobs)
I am a Fullstack .NET Developer with 10 years of experience and strong background in designing, developing, and maintaining web applications. Proficient in both front-end and back-end technologies, with extensive experience in writing complex queries for MS SQL Server. Adept at collaborating with cross-functional teams to deliver high-quality software solutions

XML
XAML
Web Development
Web Application
Script
Database Development
Docker
Front-End Development
Back-End Development
C#
TypeScript
CSS
HTML
SQL
.NET Core
$25 hourly
Kiryl K.
- 0.0/5
- (0 jobs)
As a goal-driven and motivated software engineer with over four years of experience in software development, I specialize in improving software performance, testing and upgrading existing software, and developing new software services and features using optimized algorithms and data structures. I am dedicated to delivering high-quality results on time and within project budget, and I am detail-oriented to ensure all tasks are completed to the highest standard. Additionally, I am passionate about mentoring new and less experienced team members through knowledge transfer sessions, such as pair programming and onboarding sessions. As a member of SCRUM/SAFe, I actively collaborate with Development/QA teams, BA, and participate in all SCRUM ceremonies, including retrospectives, demonstrating team progress during demo sessions, and providing accurate estimates during grooming sessions.

XML
Cypress
CI/CD
.NET Core
Computer Science
Angular
Front-End Development
Blazor
Microsoft Azure
C#
PostgreSQL
RESTful API
Docker
$25 hourly
Artem B.
- 0.0/5
- (0 jobs)
I am an experienced ESB Integration Developer with over five years of expertise in designing and implementing integrations for various clients and industries. I specialize in Dell Boomi, Jitterbit, and Mulesoft, leveraging my deep understanding of JSON, XML, XSLT, error handling strategies, flat/CSV structures, external system connectors, and CI/CD processes. My strong problem-solving skills and attention to detail allow me to create robust, scalable, and efficient integration solutions. Additionally, my C1-level English proficiency ensures smooth and effective communication with clients and teams worldwide.

XML
Data Migration
Git
CI/CD
Postman
GraphQL
CSV
XSLT
JSON
SOAP API
REST API
Mulesoft
Jitterbit
Dell Boomi
$20 hourly
Ihor H.
- 0.0/5
- (0 jobs)
I specialize in developing Android applications that are efficient, user-friendly, and maintainable. I work best when I'm building mobile solutions using Kotlin and Android SDK, focusing on clean architecture and smooth user experiences.

XML
Retrofit
Java
Koin
Room
Kotlin
Mobile App Development
Android App Development
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