43 Java Kotlin jobs in Qatar

About Lillia:

Lillia is a Digital Health company based in India and the Middle East, collaborating with healthcare partners—including clinic chains specializing in Ayurveda, Allopathy, and Homeopathy—to empower individuals to enhance their metabolic health.

Founded in 2018, Lillia leverages an innovative app-based solution that follows a three-member coaching model and clinical protocol to drive lasting behavioral change.

We are revolutionizing the way people manage their health and well-being by applying the principles of Behavioral Science, built on advanced technology to provide a seamless user experience.

Job Description:

We are looking for an experienced Backend Java Developer with 2–5 years of hands-on experience in building scalable and secure backend systems. The ideal candidate will be responsible for developing and maintaining RESTful APIs, integrating backend services with frontend applications, and ensuring system reliability and performance.

You will collaborate with cross-functional teams including frontend, data, and AI teams to deliver innovative digital health solutions. Experience or interest in agentic or multi-agent systems (Python-based) is a strong plus.

Key Responsibilities:

• Design, develop, and maintain efficient, reusable, and reliable Java code.
• Build and optimize REST APIs for mobile and web platforms.
• Integrate frontend applications (React Native / Web) with backend services.
• Ensure application performance, scalability, and security.
• Identify bottlenecks, debug issues, and implement effective fixes.
• Implement authentication, authorization, and data protection measures.
• Design and manage data storage solutions using SQL and NoSQL databases.
• Collaborate with AI and data science teams on agentic/multi-agent modules (Python).
• Participate in code reviews, maintain code quality, and follow best practices.
• Work closely with DevOps teams on CI/CD, deployment, and cloud infrastructure.

Technology Stack:

• Backend: Java, Spring Boot
• Database: MongoDB, SQL
• Cloud & DevOps: GCP, Docker, Kubernetes
• Others: Microservices, REST APIs, JWT/OAuth2
• Plus (Preferred): Python exposure, especially in multi-agent or AI-driven systems

Qualification & Experience:

• 2–5 years of backend development experience in Java/Spring Boot.
• Bachelor's or Master's degree in Computer Science or a related field.
• Strong understanding of REST architecture, microservices, and data design.
• Experience with GCP/AWS/Azure environments is a plus.
• Familiarity with Python-based agentic systems is an advantage.
• Prior experience in a startup or fast-paced tech environment is preferred.
• Passionate about writing clean, maintainable code and contributing to product innovation.

Job Type: Full-time

• Design and implement robust APIs that facilitate seamless communication between the frontend and backend components of applications.
• Optimize database queries and data storage solutions to enhance application performance and ensure scalability.
• Develop and maintain microservices architecture, enabling independent deployment and scaling of different application modules.
• Collaborate with frontend developers to integrate user-facing elements with server-side logic effectively.

• Bachelor's degree in Computer Science, Engineering, or a related field is preferred for foundational knowledge.
• Proven experience of 3+ years in backend development, showcasing a strong understanding of server-side technology.
• Familiarity with cloud platforms such as AWS, Azure, or Google Cloud for deploying scalable applications.
• Proficient in programming languages like Python, Java, or , demonstrating expertise in at least one backend framework.

Company Description

At EMMA Systems, we help airports visualize real-time data and sensory information by monitoring key parameters, conditions, and systems to optimize overall efficiency and safety. Our unique hands-on approach allows us to understand airport operations and stakeholders, enabling easy adoption of our plug-and-play A-CDM solution. Complying with EUROCONTROL A-CDM objectives, our solution is designed to improve resource utilization and event predictability through our advanced AI technologies, thereby enhancing the overall efficiency of airport operations.

Role Description

This is a full-time, on-site role for a Senior Backend Software Engineer located in Qatar. The Senior Software Engineer will be responsible for back-end web development, software development, programming, and object-oriented programming (OOP). Daily tasks include designing, implementing, testing, and maintaining software. The Senior Software Engineer will also work with other engineers to improve software quality, mentor junior engineers, and share knowledge across teams.

Key Responsibilities

• Design, build, and maintain efficient, reusable, and reliable Python code using Django.
• Develop RESTful APIs to support frontend services and mobile applications.
• Collaborate with frontend developers to define and implement data structures and APIs.
• Ensure data security, scalability, and performance in backend systems.
• Optimize backend processes to maximize speed and efficiency.
• Troubleshoot, debug, and upgrade existing backend systems.
• Write and maintain comprehensive documentation for backend systems and APIs.
• Conduct code reviews and provide mentorship to junior developers.
• Stay informed about emerging technologies and best practices in backend development
• Develop and maintain data integrations and adapters with external systems using various protocols (HTTP, TCP, message-passing, etc.).
• Experience in building resilient and multithreaded applications.

Skills and Qualifications

Education

Bachelor's or Master's degree in Computer Science, Engineering, or a related field.

Experience

5+ years of experience in backend development, particularly in Python and Django.

Technical Skills

• Expertise in Python and Django framework.
• Experience with RESTful API design and implementation.
• Strong understanding of relational databases (e.g., PostgreSQL) and NoSQL databases.
• Proficiency in version control systems such as Git.
• Familiarity with cloud services (AWS, Azure, etc.) and containerization (Docker).
• In-depth knowledge of Cross-Origin Resource Sharing (CORS), Cookies, and Caching systems.
• Skilled in Continuous Integration and Continuous Deployment (CI/CD) pipelines and tools.
• Familiarity with SSL/TLS protocols.
• Understanding of Authorization/Authentication mechanisms, including OAuth2 and OIDC.

Nice to have

• Strong analytical and problem-solving skills.
• Excellent communication and collaboration skills.
• Experience in the aviation industry and familiarity with products like AODB, RMS and A-CDM is a plus.
• Basic to advanced knowledge of front-end technologies.
• Proficiency in unit testing.
• Well-versed in system design principles.
• Strong commitment to secure coding practices
• Demonstrated proficiency in Agile methodologies, including Scrum and Kanban.
• Required experience with microservices architecture.
• Skillful in enhancing back-end system performance.

Senior Android Developer

Location:
Doha, Qatar

Department:
Technology & Development

Reports to:
Solution Architect / Project Manager

About Applab

Applab is a leading technology solutions provider in Qatar, specializing in secure, scalable, and innovative digital products for government, enterprise, and private sectors. We deliver impactful mobile applications and platforms aligned with national cybersecurity standards.

Role Overview

We are seeking a
Senior Android Developer
to join our Qatar office. The role involves leading Android application development, ensuring performance, scalability, and security of mobile solutions. You will work closely with cross-functional teams, mentor junior developers, and contribute to shaping the mobile technology roadmap at Applab.

Key Responsibilities

• Design, develop, and maintain
  advanced Android applications
  using
  Kotlin and Java
  .
• Architect
  clean, modular, and maintainable codebases
  using MVVM, MVP, and Clean Architecture.
• Lead development of
  enterprise and government Android applications
  in compliance with cybersecurity guidelines.
• Implement secure authentication mechanisms (
  OAuth, JWT, biometric authentication, etc.
  ).
• Integrate
  RESTful APIs, GraphQL, and WebSockets
  for real-time features.
• Ensure
  high performance, low latency, and optimized memory/battery usage
  .
• Set up and maintain
  CI/CD pipelines
  (Jenkins, GitHub Actions, Bitrise, etc.) for seamless delivery.
• Conduct
  code reviews, unit/UI testing (JUnit, Espresso)
  , and enforce best practices.
• Collaborate with UI/UX designers to build
  responsive and accessible interfaces
  .
• Mentor junior developers and foster technical excellence within the team.

Qualifications

• Bachelor's/Master's degree in Computer Science, Software Engineering, or related field.
• 6+ years
  of proven Android development experience.
• Strong expertise in
  Kotlin, Java, and Android SDK
  .
• Proficiency with
  Jetpack components (Room, LiveData, ViewModel, Navigation, Compose)
  .
• Experience with
  networking libraries (Retrofit, OkHttp)
  and dependency injection frameworks (
  Dagger/Hilt, Koin
  ).
• Familiarity with
  CI/CD pipelines, Git, and agile practices
  .
• Strong debugging, problem-solving, and performance optimization skills.
• Excellent communication and leadership abilities.

Preferred Skills

• Experience delivering
  large-scale or government mobile applications
  .
• Knowledge of
  Azure, Firebase, or other cloud platforms
  .
• Expertise in
  security, data encryption, and compliance standards
  .
• Familiarity with
  Play Store publishing and release management

Android Developer:

Mid-Level Android Developer

Experience: 5+ years

Job Description

We're looking for a skilled Android Developer to build scalable and maintainable apps using Jetpack Compose, modular architecture, and Clean Architecture. You'll own features end-to-end, from designing modular layers to delivering pixel-perfect UIs and ensuring smooth performance.

Responsibilities

• Develop and maintain features using Jetpack Compose, Navigation-Compose, and StateFlow.
• Work on modular projects, splitting responsibilities across base/core/data/domain/ui modules.
• Enforce clean separation of concerns with Clean Architecture principles.
• Integrate APIs using Retrofit, manage caching with Room or DataStore.
• Collaborate closely with designers and backend teams to define REST contract requirements.
• Ensure a high level of app performance and responsiveness.
• Conduct code reviews and contribute to shared component libraries.
• Write unit and UI tests using JUnit, MockK, Turbine, and Compose UI testing APIs.
• Contribute to internal documentation and technical design documents.

Requirements

• Strong command of Kotlin, Coroutines, Flow, and Jetpack Compose.
• Experience working on multi-module Android apps.
• Solid understanding of Clean Architecture, repository pattern, and domain-driven design.
• Familiar with tools such as Android Studio, ADB, Firebase, LeakCanary, and Crashlytics.
• Experience with Koin, Hilt, or other DI tools.
• Good grasp of CI/CD, Gradle optimization, and Git workflows.
• Bonus: Familiarity with Compose Animation APIs and Accompanist libraries.

At Dibsy, we're on a mission to change the way businesses accept payments in Qatar — helping accelerate the shift from cash to seamless digital transactions. We are building the digital financial infrastructure for the region, with a vision where every transaction flows securely through Dibsy.

We're growing fast — and we're looking for passionate builders to help shape the future.

About the Role

We are looking for an experienced Android Developer to join our team and help build Dibsy Terminal, our SoftPOS solution. You will be responsible for developing secure, high-performance Android applications that allow businesses to accept in-person payments directly on their smartphones

What You'll Do

• Design, develop, and maintain Android applications focused on contactless SoftPOS payments.
• Implement secure payment flows using NFC, EMV, and card-present technologies.
• Work closely with product managers, backend engineers, and UI/UX designers to deliver a seamless merchant experience.
• Integrate third-party SDKs and payment libraries as required (e.g. Visa Tap to Phone, Mastercard MPoC).
• Troubleshoot and resolve issues related to performance, connectivity, and device compatibility.
• Write clean, scalable, and testable code in Java and Kotlin.

What We're Looking For

• 3+ years of experience in Android app development.
• Strong command of Java and Kotlin with experience using Android SDKs, tools, and best practices.
• Previous experience working on payment, NFC, or SoftPOS applications is a strong plus.
• Strong problem-solving skills and attention to detail.
• Comfortable working in a fast-paced, startup-like environment.

Ready to build the future of digital payments in Qatar?

Apply now and join us on this exciting journey.

Hiring: Software Engineer

Location: Onsite – Qatar

Duration: 6 Months & Extendable

Salary: QAR 12,000/- (Full Package)

Key Skills & Experience:

• Strong expertise in Java 17, Spring Framework, and Spring Boot
• Hands-on experience with Angular, AngularJS, JavaScript, NodeJS
• Skilled in developing REST APIs and Graph Query Language (preferred)
• Solid understanding of collections frameworks
• Proficiency in SQL, PL/SQL, Oracle, MySQL, SQL Server
• Familiar with PostgreSQL, MongoDB, or NoSQL databases
• Knowledge of database design, data modeling, and administration
• Experience with NiFi and retrieving data via APIs is an advantage

Requirements:

• Minimum 5–8 years of relevant development experience
• Strong problem-solving and debugging skills

Job Type: Contract

Contract length: 6 months

Pay: QAR11, QAR12,000.00 per month

Application Question(s):

• Do you have experience working with Angular, AngularJS, JavaScript, and
• How many years of hands-on experience do you have with Java, Spring Framework, and Spring Boot?
• How many years of experience do you have with SQL, PL/SQL, and RDBMS like Oracle, MySQL, or SQL Server?
• Have you developed and exposed REST APIs or worked with HTTP REST/JSON web services?
• Do you have experience with database design, NoSQL databases (PostgreSQL, MongoDB), or using tools like Nifi?

*

What is your notice period? (Immediate / 15 days / 30 days / Other – please specify)

Ready to build the future of food?

The global food supply chain runs on outdated systems of paper and phone calls, and we believe it's time for a revolution. This inefficiency is the root cause of massive food waste, and we're on a mission to fix it.

At Wady AI, we're building the digital backbone for the entire industry. We are set to lead the race in the GCC and MENA by transforming how food moves, digitizing the supply chain, and reducing waste using the power of data.

We're looking for ambitious, passionate young talent in Qatar to join our mission. If you are an aspiring engineer in
Back End, Front End, Machine Learning, or AI
, this is your chance to build a better future with us. We're offering a bonus for those with a strong foundation in
React, React Native, and NodeJS
.

This isn't just an internship; it's an opportunity to join a team set on a global mission, with a clear path to a full-time role for the right candidate. The work is challenging, the vision is bold, and the impact is real.

If you are ready to help us build a smarter, more sustainable food system, we want to hear from you.

We have an Senior C# Developer, 6 month+ contract that has opened up

Working for a large Energy provider, specifically in their trading team, you will play a key role in designing, developing, and maintaining high-quality applications. using C# and .NET technologies.

Key responsibilities include:

• Design, development and maintenance of various applications like Trade Capture, ETRM
• Integration, Data Platforms, Pricing Engine, Charting and Algorithmic Execution.
• Integrating real-time price and trade data from various exchanges using microservice APIs. (Trayport, ICE, CME, EPEX SPOT/ETS, Nodal, OMIE, NEXTRA, EXXETA)

To be considered, applicants will need be proficient in algorithmic trading, including the development and implementation of strategies

This role can be based in London or Qatar with some travel to Qatar throughout the year.