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java backend developer

Rasen Horse for Electronic Trading

<p>We are looking for a skilled Java Backend Developer to join our team for e-commerce and booking projects. The ideal candidate will have hands-on experience building scalable backend systems, booking/ e-commerce workflows, and deploying applications on cloud platforms.</p><p>Key Responsibilities:</p><ul><li>Develop and maintain backend services and APIs using Java and related frameworks (Spring Boot, Hibernate).</li><li>Design and optimize database schemas for e-commerce and booking systems.</li><li>Integrate payment gateways, booking flows, and inventory management systems.</li><li>Work with micro-services architecture and RESTful APIs.</li><li>Deploy and manage applications on cloud platforms (AWS, GCP, or Azure).</li><li>Ensure code quality, scalability, and performance.</li><li>Collaborate with frontend and mobile teams for seamless integration.</li><li>Participate in code reviews, testing, and continuous improvement of processes.</li></ul><p>Required Skills:</p><ul><li>2-4 years of experience in Java backend development.</li><li>Strong experience with Spring Boot, REST APIs, and micro-services.</li><li>Hands-on experience with cloud platforms (AWS, GCP, Azure) and deployment practices.</li><li>Experience with relational databases (PostgreSQL/MySQL) and ORM frameworks.</li><li>Knowledge of e-commerce workflows, booking systems, and payment integrations.</li><li>Familiarity with version control tools like Git.</li></ul><p>Preferred Skills:</p><ul><li>Experience with Docker/Kubernetes for containerization and orchestration.</li><li>Familiarity with message queues (RabbitMQ, Kafka) or caching (Redis).</li><li>Exposure to CI/CD pipelines.</li></ul><p>Job Types: Full-time, Permanent</p><p>Pay: From QAR4,000.00 per month</p><p>Education:</p><ul><li>Bachelor's (Preferred)</li></ul><p>Experience:</p><ul><li>Java Backend developer: 3 years (Preferred)</li></ul><p>Location:</p><ul><li>Doha (Preferred)</li></ul>

Java Backend Developer

Al Adyat consultancy

<p>Developer - As an Android Application Developer, you will be responsible to support, maintain, and troubleshoot backend systems in production. This role focuses on ensuring system reliability, resolving incidents, and collaborating with engineering teams to improve service stability and performance.</p><p>Roles &amp; Responsibilities:</p><p>- Expected to perform independently and become an SME.</p><p>- Required active participation/contribution in team discussions.</p><p>- Contribute in providing solutions to work-related problems.</p><p>- Collaborate with cross-functional teams to gather and analyze requirements.</p><p>- Design and develop software applications using Java Enterprise Edition.</p><p>- Write clean, efficient, and maintainable code.</p><p>- Perform unit testing and debugging of applications.</p><p>- Participate in code reviews to ensure code quality and adherence to coding standards.</p><p>Professional &amp; Technical Skills:</p><p>- Must To Have Skills: Proficiency in Java Enterprise Edition.</p><p>- Good To Have Skills: Experience with Spring Framework and Hibernate.</p><p>- Strong understanding of object-oriented programming principles.</p><p>- Experience with web application development using HTML, CSS, and JavaScript.</p><p>- Knowledge of relational databases and SQL.</p><p>- Familiarity with version control systems such as Git.</p><p>Additional Information:</p><p>- The candidate should have a minimum of 3 years of experience in Java Enterprise Edition.</p><p>- A BE or BTech degree is required.</p><p>- Troubleshooting experiences (tools, logs analysis etc.) and quick Troubleshooting skill</p><p>- 2 years of Experience in Application / Platform support activities, proficient in ITSM tool, processess and Support activities.</p><p>- Willing to work in shifts, on-call for Operational supports</p><p>Job Type: Full-time</p><p>Pay: QAR14,000.00 - QAR17,000.00 per month</p><p>Education:</p><ul><li>Bachelor's (Required)</li></ul><p>Experience:</p><ul><li>Android Application Developer: 3 years (Required)</li></ul><p>Language:</p><ul><li>Arabic  (Required)</li><li>English  (Required)</li></ul><p>License/Certification:</p><ul><li>degree in Computer Science (Required)</li></ul>

Android- Technology lead / Developer

<p>Developer - As an BPM Application Developer,you will be responsible to support, maintain, and troubleshoot backend systems in production. This role focuses on ensuring system reliability, resolving incidents, and collaborating with engineering teams to improve service stability and performance.</p><p>You will be responsible for ensuring the smooth functioning of applications and their integration with other systems. Your typical day will involve collaborating with cross-functional teams, analyzing user requirements, designing application architecture, coding and testing applications, and troubleshooting any issues that arise. You will also have the opportunity to contribute to the continuous improvement of application development processes and technologies.</p><p>Roles &amp; Responsibilities:</p><p>- Expected to perform independently and become an SME.</p><p>- Required active participation/contribution in team discussions.</p><p>- Design and implement BPM process in Camunda 8 and Zeebe client implementation</p><p>- Contribute in providing solutions to work-related problems.</p><p>- Collaborate with cross-functional teams to analyze user requirements and design application architecture.</p><p>- Code, test, and debug applications to ensure they meet business process and application requirements.</p><p>- Integrate applications with other systems and troubleshoot any integration issues.</p><p>- Ensure the smooth functioning of applications by monitoring performance and addressing any issues that arise.</p><p>- Contribute to the continuous improvement of application development processes and technologies.</p><p>Professional &amp; Technical Skills:</p><p>- Must To Have Skills: Proficiency in Camunda BPM version 8.</p><p>- Strong understanding of software development principles and methodologies.</p><p>- Experience in designing and building applications using Camunda BPM,</p><p>- Handson experience in writing Feel expressions, job workers, Camunda APIs, Restful services</p><p>- Knowledge of Java programming language and related frameworks.</p><p>- Familiarity with web technologies such as HTML, CSS, and JavaScript.</p><p>- Experience with database management systems and SQL.</p><p>- Good To Have Skills: Experience with Agile software development methodologies.</p><p>- Knowledge of cloud platforms and technologies.</p><p>- Understanding of DevOps principles and tools.</p><p>Additional Information:</p><p>- The candidate should have a minimum of 3 years of experience in Camunda BPM.</p><p>- A 15 years full-time education is required.</p><p>- Troubleshooting experiences (tools, logs analysis etc.) and quick Troubleshooting skill</p><p>- 2 years of Experience in Application / Platform support activities, proficient in ITSM tool, processess and Support activities.</p><p>- Willing to work in shifts, on-call for Operational supports</p><p>Job Type: Full-time</p><p>Pay: QAR14,000.00 - QAR17,000.00 per month</p><p>Education:</p><ul><li>Bachelor's (Required)</li></ul><p>Experience:</p><ul><li>Developer - As an BPM Application Developer: 3 years (Required)</li></ul><p>Language:</p><ul><li>Arabic  (Required)</li><li>English  (Required)</li></ul><p>License/Certification:</p><ul><li>degree in Computer Science (Required)</li></ul>

BPM- Technology Developer

Power Diet

<p><b>Full-Stack Developer (React Native &amp; NestJS)</b></p><p><b>Company:</b> <b>Lumi Super AI App</b><br/><b>Location:</b> Qatar<br/><b>Job Type:</b> Full-time</p><p><b>Lumi Super AI App</b> is looking for a highly skilled <b>Full-Stack Developer</b> to join our growing team. The ideal candidate will have strong experience in <b>mobile application development</b> and <b>backend systems</b>, with a passion for building scalable, high-quality applications.</p><p><b>Key Responsibilities</b></p><ul><li>Develop and maintain mobile applications using <b>React Native</b></li><li>Design, build, and maintain backend services using <b>NestJS</b></li><li>Build and consume <b>RESTful APIs</b></li><li>Collaborate with cross-functional teams to deliver high-quality solutions</li><li>Write clean, maintainable, and well-documented code</li><li>Troubleshoot, debug, and optimize application performance</li></ul><p><b>Requirements</b></p><ul><li><b>3+ years</b> of professional experience in full-stack development</li><li>Strong expertise in <b>React Native</b></li><li>Proven experience with <b>NestJS</b></li><li>Expert-level knowledge of <b>JavaScript</b></li><li>Solid experience with <b>RESTful APIs</b></li><li>Good understanding of version control systems (<b>GitHub</b>)</li><li>Hands-on experience with <b>Android and iOS</b> app development</li></ul><p><b>What We&rsquo;re Looking For</b></p><ul><li>Strong problem-solving and debugging skills</li><li>Ability to work independently and within a team</li><li>Experience building scalable and performance-oriented applications</li><li>High attention to code quality and best practices</li></ul><p>Job Type: Full-time</p><p>Pay: QAR5,000.00 - QAR7,000.00 per month</p>

Full-Stack Mobile Application Developer (React Native & NestJS)

<div>
 <strong>
  Your role
  <br/>
  <br/>
 </strong>
 We are seeking a highly skilled and innovative Senior Software Engineer to join our engineering team. In this role, you will design and build scalable software systems that power next-generation applications, with a focus on Python, Java, and intelligent AI agent development. You will work on complex technical challenges, shape architectural decisions, and collaborate with cross-functional teams to deliver impactful solutions
 <br/>
 <br/>
 <ul>
  <li>
   design, develop, and maintain high-performance, scalable, and secure systems in Python and Java.
  </li>
  <li>
   design test automation architecture of client applications for cross-platform and technologies such as UI, REST API and backend automation.
  </li>
  <li>
   architect, implement, and deploy AI agents that integrate with business workflows and enhance user experiences.
  </li>
  <li>
   collaborate with product, design, and research teams to translate requirements into technical solutions.
  </li>
  <li>
   contribute to system architecture discussions and long-term technical strategies.
  </li>
  <li>
   stay current with industry trends in AI frameworks, agent-based systems, and distributed computing.
  </li>
  <li>
   drive innovation by experimenting with emerging tools and methodologies in AI and backend engineering.
   <br/>
   <br/>
  </li>
 </ul>
 <strong>
  Job Type
  <br/>
  <br/>
 </strong>
 Full Time
 <br/>
 <br/>
 <strong>
  Job Reference #
  <br/>
  <br/>
 </strong>
 328865BR
 <br/>
 <br/>
 <strong>
  City
  <br/>
  <br/>
 </strong>
 Doha
 <br/>
 <br/>
 <strong>
  Your team
  <br/>
  <br/>
 </strong>
 You&rsquo;ll be working in our delivery team in Qatar. You&rsquo;ll be working together with global IT team to provide robust and reliable IT services and solutions to help our clients to manage their assets and investments.
 <br/>
 <br/>
 <strong>
  Your expertise
  <br/>
  <br/>
 </strong>
 <ul>
  <li>
   university degree in computer science, information systems or related field of study with around 5 years of experience in overall SDET and development experience.
  </li>
  <li>
   proven expertise in Python and Java with strong knowledge of software design patterns, data structures, and algorithms.
  </li>
  <li>
   experience building and deploying AI/ML systems or intelligent agents
  </li>
  <li>
   strong understanding of distributed systems, APIs, and microservices.
  </li>
  <li>
   strong communication and collaboration skills with the ability to work across teams.
  </li>
  <li>
   experience with LangChain, LangGraph, RAG, or agent-based architectures.
  </li>
  <li>
   familiarity with modern cloud platforms (AWS, GCP, Azure) and containerization (Docker, Kubernetes).
  </li>
  <li>
   prior contributions to open-source AI/ML frameworks or projects.
  </li>
  <li>
   strong technical experience of working with APIs testing using Java, Postman, Karate, SoapUI or any other proficient tool.
  </li>
  <li>
   have developed end to end automation frameworks with dynamic test data, reusable utilities, database test and detailed reporting for web-services.
  </li>
  <li>
   proficient in the execution of different forms of testing like functional testing, component test, integration testing for APIs, acceptance testing and performance testing
  </li>
  <li>
   ability to interpret, evaluate and communicate detailed information. Ability to effectively manage multiple tasks and meet deadlines.
   <br/>
   <br/>
  </li>
 </ul>
 <strong>
  About Us
  <br/>
 </strong>
 UBS is a leading and truly global wealth manager and the leading universal bank in Switzerland. We also provide diversified asset management solutions and focused investment banking capabilities. Headquartered in Zurich, Switzerland, UBS is present in more than 50 markets around the globe.
 <br/>
 <br/>
 We know that great work is never done alone. That&rsquo;s why we place collaboration at the heart of everything we do. Because together, we&rsquo;re more than ourselves. Want to find out more? Visit ubs.com/careers.
 <br/>
 <br/>
 <strong>
  Join us
  <br/>
  <br/>
 </strong>
 At UBS, we know that it's our people, with their diverse skills, experiences and backgrounds, who drive our ongoing success. We&rsquo;re dedicated to our craft and passionate about putting our people first, with new challenges, a supportive team, opportunities to grow and flexible working options when possible. Our inclusive culture brings out the best in our employees, wherever they are on their career journey. And we use artificial intelligence (AI) to work smarter and more efficiently. We also recognize that great work is never done alone. That&rsquo;s why collaboration is at the heart of everything we do. Because together, we&rsquo;re more than ourselves.
 <br/>
 <br/>
 We&rsquo;re committed to disability inclusion and if you need reasonable accommodation/adjustments throughout our recruitment process, you can always contact us.
 <br/>
 <br/>
 <strong>
  Disclaimer / Policy statements
  <br/>
  <br/>
 </strong>
 UBS is an Equal Opportunity Employer. We respect and seek to empower each individual and support the diverse cultures, perspectives, skills and experiences within our workforce.
</div>


Senior Software Engineer (Java/Python/AI)

Qatar Airways

<div><div><div><div><div><div><div><div>Job title
</div><div>Technical Lead - Java
</div></div><div><div>Ref #
</div><div>230263
</div></div><div><div>Location
</div><div>Qatar - Doha
</div></div><div><div>Job family
</div><div>Corporate &amp; Commercial
</div></div><div><div><ul><li>Closing date: 19-Jan-2026</li></ul><br>
</div></div></div></div></div><div><div><div><div><div><p><b>About Role</b></p><p>
We are looking for a <b>Java Developer / Lead</b> who possesses a passion for pushing technologies to the limits. <b>Java Developer / Lead</b> will work with our cross-technical teams to design and build the next generation of our web and mobile applications.</p><p><b>
Key Responsibilities</b></p><ul><li>
Design and develop high quality and reliable code with unit test cases, meeting given specifications.</li><li>
Create Documentation, sequence diagram and other low-level design artefacts.</li><li>
Perform code analysis, peer reviews, requirements analysis, software review, system risk analysis and software reliability analysis.</li><li>
Ensures the developed code covers the non-functional requirements including performance, security, auditing and integrity.</li><li>
Resolve production incidents or defects as needed, and proactively identify potential issues before they appear in the production environment; contribute to the root cause analysis.</li><li>
Drive high performance and accountability for own deliverables. Work well within a team and always work for team success by supporting other team members, constructively acting on feedback, and identifying challenging opportunities that enhance career growth.</li><li>
Contribute in in defining secure coding standards, and work in a team to follow best practices to ensure quality, scalability, and security of deliverables.</li><li>
Tackle challenges and solve complex problems on a daily basis.</li></ul><p><b>
Be part of an extraordinary story</b></p><p>
Your skills. Your imagination. Your ambition. Here, there are no boundaries to your potential and the impact you can make. You&rsquo;ll find infinite opportunities to grow and work on the biggest, most rewarding challenges that will build your skills and experience. You have the chance to be a part of our future, and build the life you want while being part of an international community.</p><p>
Our best is here and still to come. To us, impossible is only a challenge. Join us as we dare to achieve what&rsquo;s never been done before. Together, everything is possible.</p>
</div></div></div></div></div><div><div><div><h3 class="jobSectionHeader"><b>Qualifications
</b></h3></div></div><div><div><div><div><p><b>Knowledge Skills &amp; Experience</b></p><ul><li>
Relevant college or University qualification to minimum Bachelor&rsquo;s level.</li><li>
Java developer with Minimum 6 years&rsquo; experience in designing and developing Java applications.</li><li>
Expertise in Spring boot, micro services and hibernate.</li><li>
Knowledge in cloud technologies and Kubernetes.</li><li>
Knowledge of DDD and design patterns.</li><li>
Hands-on experience working with RESTful web services and JSON.</li><li>
Hands-on experience working with elastic search to identify trends and potential issues.</li><li>
Good knowledge of agile devops process with SCRUM.</li><li>
Demonstrated ability to troubleshoot and program complex application stack.</li><li>
Hands-on experience in building customer facing applications preferably in travel, payment domain will be an added advantage.</li><li>
Ability to work independently with minimal supervision and ensure the transparency of the work.</li><li>
Good communication skills</li></ul><p><b>
About Qatar Airways Group</b></p><p>
Our story started with four aircraft. Today, we deliver excellence across 12 different businesses coming together as one. We&rsquo;ve grown fast, broken records and set trends that others follow. We don&rsquo;t slow down by the fear of failure. Instead, we dare to achieve what&rsquo;s never been done before.</p><p>
So whether you&rsquo;re creating a unique experience for our customers or innovating behind the scenes, every person contributes to our proud story. A story of spectacular growth and determination. Now is the time to bring your best ideas and passion to a place where your ambition will know no boundaries and be part of a truly global community.</p><p><b>
How to Apply</b></p><p>
If you&rsquo;re ready to join a progressive team and have a challenging and rewarding career, then apply now by uploading your CV and completing our quick application form.</p><br>
</div></div><div></div><div><div><br>
<div><b>About Qatar Airways Group
</b></div><br>
Our story started with four aircraft. Today, we deliver excellence across 12 different businesses coming together as one. We&rsquo;ve grown fast, broken records and set trends that others follow. We don&rsquo;t slow down by the fear of failure. Instead, we dare to achieve what&rsquo;s never been done before.<br>
<br>
So whether you&rsquo;re creating a unique experience for our customers or innovating behind the scenes, every person contributes to our proud story. A story of spectacular growth and determination. Now is the time to bring your best ideas and passion to a place where your ambition will know no boundaries, and be part of a truly global community.<br>
</div></div><div><div>https://aa115.taleo.net/careersection/QA_External_CS/jobapply.ftl?lang=en&amp;job=230263</div></div></div></div></div></div></div></div>

Technical Lead - Java

<p>As a <b>Senior Full-Stack Developer</b>, you will play a critical role in developing, maintaining, and scaling Lumi&rsquo;s mobile and backend systems. You will work on both <b>React Native mobile applications</b> and <b>NestJS-based backend services</b>, contribute to architectural decisions, and ensure high performance, security, and scalability.</p><p>This role requires hands-on expertise, strong problem-solving skills, and experience working with real-world production systems.</p><p><b>Key ResponsibilitiesFrontend / Mobile Development</b></p><ul><li>Develop, enhance, and maintain <b>React Native</b> mobile applications (<b>Android &amp; iOS</b>).</li><li>Improve UI/UX performance, responsiveness, and stability.</li><li>Fix bugs, optimize existing features, and implement new functionality.</li><li>Integrate APIs and third-party services efficiently.</li><li>Ensure smooth app deployment to <b>App Store &amp; Play Store.</b></li></ul><p><b>Backend Development</b></p><ul><li>Design, develop, and maintain backend services using <b>NestJS (Node.js)</b>.</li><li>Build and manage <b>RESTful APIs</b> for mobile and web platforms.</li><li>Optimize backend performance, security, and scalability.</li><li>Work with authentication, authorization, and role-based access control.</li><li>Integrate real-time services and background jobs where needed.</li></ul><p><b>AI &amp; Smart Features</b></p><ul><li>Collaborate on AI-driven features such as automation, recommendations, and intelligent workflows.</li><li>Work with AI APIs, data pipelines, and AI-based decision systems.</li><li>Support integration of AI modules into mobile and backend systems.</li></ul><p><b>DevOps &amp; Infrastructure</b></p><ul><li>Work with <b>CI/CD pipelines</b> for automated build, test, and deployment.</li><li>Experience with <b>Azure Cloud</b> (App Services, Storage, Databases, Functions, etc.).</li><li>Manage environments (Development, UAT, Production).</li><li>Ensure system reliability, monitoring, and performance optimization.</li></ul><p><b>Code Quality &amp; Collaboration</b></p><ul><li>Maintain clean, scalable, and well-documented code.</li><li>Use <b>GitHub</b> for version control, pull requests, and code reviews.</li><li>Collaborate with product managers, designers, and QA teams.</li><li>Participate in technical planning, estimations, and architecture discussions.</li></ul><p><b>Required Skills &amp; ExperienceMust-Have Skills</b></p><ul><li><b>4+ years of experience</b> in mobile and full-stack development.</li><li>Strong expertise in <b>React Native</b>.</li><li>Strong experience with <b>NestJS</b> and <b>Node.js</b>.</li><li>Excellent knowledge of <b>JavaScript / TypeScript</b>.</li><li>Experience building and consuming <b>RESTful APIs</b>.</li><li>Solid understanding of <b>Git / GitHub workflows</b>.</li><li>Experience with <b>CI/CD pipelines</b>.</li><li>Hands-on experience with <b>cloud hosting (Azure preferred)</b>.</li><li>Strong debugging, optimization, and problem-solving skills.</li><li>Experience maintaining and improving existing production apps.</li></ul><p><b>AI &amp; Advanced Skills (Highly Preferred)</b></p><ul><li>Experience working with <b>AI-powered features or APIs</b>.</li><li>Understanding of AI workflows, data processing, or ML integration.</li><li>Experience integrating AI into mobile or backend systems.</li></ul><p><b>Email at support@lumi.qa</b></p><p>Job Types: Full-time, Permanent, Contract<br/>Contract length: 24 months</p><p>Pay: QAR5,000.00 - QAR7,000.00 per month</p>

Mobile App Developer (React Native / NestJS / AI-Focused)

Explore 74+ Java backend developer in Charge Jobs In Doha this January. Find roles across top companies and apply now to boost your career.