200 Java Fullstack jobs in Qatar

Overview

mselect is looking to hire a Senior System Engineer (Development) – Java/Fullstack Solution Developer for an oil and gas operator in Doha, Qatar . Candidates must have a minimum of 3 years of experience as a Full-Stack Developer with strong JavaScript and Java proficiency. Fluency in English is a must.

• Design and develop robust, scalable, secure and efficient software solutions to meet business requirements
• Design, develop, and maintain backend microservices and RESTful APIs following the latest industry standards and best practices
• Implement effective security measures and best practices throughout the development lifecycle
• Integrate with various services and APIs using API Gateway
• Collaborate with cross-functional teams (projects, design, QA) to understand requirements and deliver solutions
• Write clean, well-documented, and maintainable code
• Participate in code reviews and knowledge sharing within the team
• Stay up-to-date with the latest technologies and industry trends

• Minimum bachelor’s degree in computer science, Software Engineering, or a related field (or equivalent experience)
• 3+ years of experience as a Full-Stack Developer with strong JavaScript and Java proficiency
• Experience in designing and building user-friendly and intuitive applications
• Strong understanding of data modelling and business process automation concepts
• Experience with other Microsoft technologies like Azure, SharePoint, and Office 365 is a plus
• Expertise in building modern UI experiences with JavaScript frameworks: Design and develop captivating user interfaces using JavaScript frameworks like Vuejs, Angular, or React; Ensure a consistent and seamless user experience across all platforms
• Strong understanding of RESTful API design principles and best practices
• Experience with designing and implementing APIs using Azure Functions, API Gateway, and on-premise solutions: Craft secure and efficient backend services with Java and modern frameworks like Spring Boot; Design and implement RESTful APIs using JavaScript, Azure Functions or on-premise solutions; Seamlessly integrate services and APIs through API Gateways on cloud or on-premise configurations
• Experience in database design in addition to writing efficient queries
• Experience with cloud platforms like Azure and on-premise server deployments: Deploy applications to both Azure cloud and on-premise servers using appropriate tools and methodologies
• Excellent problem-solving, analytical, and critical thinking skills
• Effective communication and collaboration skills
• Ability to thrive in a collaborative and fast-paced environment
• Write clean, documented, and maintainable code for both front-end and back-end
• Champion code reviews and knowledge sharing within the team
• Stay ahead of the curve by immersing yourself in the latest technological advancements

• Note: Only applicants meeting the strict criteria outlined above will be contacted as part of the shortlisting process.

We provides IT services and consulting tailored for small healthcare businesses and private practices. Our mission is to help providers enhance efficiency, ensure data security, and adopt cost-effective technology solutions that support high-quality care.

In addition to healthcare IT support, we develop custom software solutions designed to meet the unique needs of small healthcare organizations. Our team builds secure, user-friendly, and HIPAA-compliant tools that simplify operations and improve patient outcomes.

Flourish Health is also exploring opportunities in the blockchain industry, aiming to leverage decentralized technologies to improve data integrity, transparency, and trust in healthcare and beyond.

At Flourish Health, we make technology simple, reliable, and accessible-so healthcare professionals can thrive in a digital world.

We're an early-stage team building a project- a fully on-chain decentralized borrowing protocol - and we're currently looking to bring on two Web3 developers :

• Frontend Developer - to help update and improve our React.
• Smart Contract Developer - to build and integrate contracts using Solidity, ethers.js, wagmi, etc.

We're aiming to hire both by next month. Since we're a small, fast-moving startup, there's no formal hiring process - just a focus on working with skilled, motivated builders who can move fast.

These are short-term roles, but we're open to extending the collaboration if it's a good fit. Experience with multi-chain (EVM) development is a big plus.

• You have hands-on experience building in Web3, with strong skills in React or Solidity / EVM tools like ethers.js, wagmi, or hardhat.
• You have at least 3 years experience, ideally within a Software Engineer role.
• You thrive in early-stage startup environments - you're self-motivated, fast-moving, and able to take ownership without heavy structure.
• You possess strong analytical skills.
• You're passionate about blockchain, decentralized finance (DeFi), or the future of technology in healthcare.

• Join a fast-moving startup building a fully on-chain decentralized borrowing protocol - shape the future of Web3 in healthcare and beyond.

As a Software Engineer, you will be responsible for designing, developing, and maintaining high-quality software applications using the C# programming language. You will collaborate with cross-functional teams to analyze requirements, propose solutions, and implement robust software solutions.

Design and develop software applications using C#, adhering to coding standards and best practices.

Collaborate with product managers, data scientists, and other stakeholders to gather and analyze software requirements.

Translate software requirements into technical specifications and designs.

Write clean, efficient, and maintainable code to implement software solutions.

Conduct thorough unit testing to ensure the reliability and quality of the software.

Debug and resolve software defects and issues in a timely manner.

Collaborate with other software engineers to review code and provide constructive feedback.

Participate in code reviews and contribute to the improvement of coding standards and practices.

Stay up to date with the latest technologies, trends, and best practices in C# development. Collaborate with cross functional teams to ensure seamless integration of software components.

Troubleshoot and resolve software performance and scalability issues.

Document software designs, technical specifications, and implementation details.

Assist in the deployment and configuration of software applications.

Drive improvements in all areas, including data quality, testing and CI

Provide technical guidance and mentorship to junior software engineers.

Required Skills

Strong proficiency in C# programming language.

Experience in software development using .NET framework and related technologies.

Solid understanding of object-oriented programming principles and design patterns.

Proficiency in database development and SQL.

Familiarity with software development methodologies, such as Agile or Scrum.

Experience with version control systems, such as Git.

Strong problem-solving and analytical skills.

Excellent communication and collaboration abilities.

Ability to work effectively in a team-oriented environment.

Strong attention to detail and a commitment to delivering high-quality software.

Familiarity with front-end technologies (HTML, CSS, JavaScript) is a plus.

Experience with cloud technologies

We are seeking a Software Engineer to join our team and play a critical role in maintaining and improving the user experience of our digital platforms. This role is responsible for analyzing, troubleshooting, and resolving support tickets and incidents related to our applications. The ideal candidate will have hands-on experience in frontend development , SQL-based diagnostics , and technical support processes , along with a strong understanding of web analytics and agile workflows.

Key Responsibilities

• Monitor, prioritize, and resolve software support tickets via Jira or similar systems.
• Troubleshoot and debug issues across frontend (React.js, Blazor) and backend systems (C#/.NET, SQL)
• Collaborate with developers, QA, and product teams to reproduce, diagnose, and fix bugs
• Utilize SQL queries to investigate data-related issues and implement DBCRs
• Leverage tools like Google Analytics to understand user behavior and identify root causes
• Perform Excel-based analysis for reporting, ticket triaging, and internal data validation
• Write and maintain internal documentation and knowledge base articles
• Participate in agile sprint ceremonies and contribute to continuous improvement of the support process.
• Provide feedback to the development team on recurring issues, feature gaps, and customer pain points.

Required Skills & Experience

• 2+ years of hands-on experience in software development.
• Proficient in React.js , JavaScript , TypeScript , and MS Blazor for frontend support and diagnostics.
• Strong working knowledge of C# and .NET framework
• Intermediate to advanced SQL skills (writing queries, debugging database issues).
• strong in Google Analytics for event tracking and analysis.
• Excellent Excel skills (formulas, pivot tables, data cleansing).
• Experience working with Jira , or similar ticket management tools.
• Solid understanding of Agile methodologies and sprint-based workflows.
• Strong analytical thinking and problem-solving ability.
• Excellent communication and cross-functional collaboration skills.

Preferred Qualifications

• Background in software development or computer science.
• Experience working with logging and monitoring tools (e.g., Kibana, Application Insights).
• Exposure to RESTful APIs and network-level debugging.
• Familiarity with DevOps pipelines and release management is a plus.

Overview

We provides IT services and consulting tailored for small healthcare businesses and private practices. Our mission is to help providers enhance efficiency, ensure data security, and adopt cost-effective technology solutions that support high-quality care.

In addition to healthcare IT support, we develop custom software solutions designed to meet the unique needs of small healthcare organizations. Our team builds secure, user-friendly, and HIPAA-compliant tools that simplify operations and improve patient outcomes.

Flourish Health is also exploring opportunities in the blockchain industry, aiming to leverage decentralized technologies to improve data integrity, transparency, and trust in healthcare and beyond.

At Flourish Health, we make technology simple, reliable, and accessible—so healthcare professionals can thrive in a digital world.

We're an early-stage team building a project— a fully on-chain decentralized borrowing protocol — and we're currently looking to bring on two Web3 developers :

• Frontend Developer – to help update and improve our React.
• Smart Contract Developer – to build and integrate contracts using Solidity, ethers.js, wagmi, etc.

We're aiming to hire both by next month. Since we're a small, fast-moving startup, there's no formal hiring process — just a focus on working with skilled, motivated builders who can move fast.

These are short-term roles, but we’re open to extending the collaboration if it’s a good fit. Experience with multi-chain (EVM) development is a big plus.

• You have hands-on experience building in Web3, with strong skills in React or Solidity / EVM tools like ethers.js, wagmi, or hardhat.
• You have at least 3 years experience, ideally within a Software Engineer role.
• You thrive in early-stage startup environments — you’re self-motivated, fast-moving, and able to take ownership without heavy structure.
• You possess strong analytical skills.
• You’re passionate about blockchain, decentralized finance (DeFi), or the future of technology in healthcare.

• Join a fast-moving startup building a fully on-chain decentralized borrowing protocol — shape the future of Web3 in healthcare and beyond.

About nybl

We are developing an AI ecosystem that enables businesses across industries to deploy artificial intelligence solutions seamlessly using our platform and applications. Our technology empowers anyone to build AI solutions—without writing a single line of code or holding a Data Science degree. From healthcare to agriculture, education to industry, the applications of our technology are truly limitless.

The Role

As a Software Engineer, you will be responsible for designing, developing, and maintaining high-quality software applications using the C# programming language. You will collaborate with cross-functional teams to analyze requirements, propose solutions, and implement robust software solutions.

Responsibilities

Design and develop software applications using C#, adhering to coding standards and best practices.

Collaborate with product managers, data scientists, and other stakeholders to gather and analyze software requirements.

Translate software requirements into technical specifications and designs.

Write clean, efficient, and maintainable code to implement software solutions.

Conduct thorough unit testing to ensure the reliability and quality of the software.

Debug and resolve software defects and issues in a timely manner.

Collaborate with other software engineers to review code and provide constructive feedback.

Participate in code reviews and contribute to the improvement of coding standards and practices.

Stay up to date with the latest technologies, trends, and best practices in C# development. Collaborate with cross functional teams to ensure seamless integration of software components.

Troubleshoot and resolve software performance and scalability issues.

Document software designs, technical specifications, and implementation details.

Assist in the deployment and configuration of software applications.

Drive improvements in all areas, including data quality, testing and CI

Provide technical guidance and mentorship to junior software engineers.

Required Skills

Strong proficiency in C# programming language.

Experience in software development using .NET framework and related technologies.

Solid understanding of object-oriented programming principles and design patterns.

Proficiency in database development and SQL.

Familiarity with software development methodologies, such as Agile or Scrum.

Experience with version control systems, such as Git.

Strong problem-solving and analytical skills.

Excellent communication and collaboration abilities.

Ability to work effectively in a team-oriented environment.

Strong attention to detail and a commitment to delivering high-quality software.

Familiarity with front-end technologies (HTML, CSS, JavaScript) is a plus.

Experience with cloud technologies

We are seeking a Software Engineer to join our team and play a critical role in maintaining and improving the user experience of our digital platforms. This role is responsible for analyzing, troubleshooting, and resolving support tickets and incidents related to our applications. The ideal candidate will have hands-on experience in frontend development , SQL-based diagnostics , and technical support processes , along with a strong understanding of web analytics and agile workflows.

Key Responsibilities

• Monitor, prioritize, and resolve software support tickets via Jira or similar systems.
• Troubleshoot and debug issues across frontend (React.js, Blazor) and backend systems (C#/.NET, SQL)
• Collaborate with developers, QA, and product teams to reproduce, diagnose, and fix bugs
• Utilize SQL queries to investigate data-related issues and implement DBCRs
• Leverage tools like Google Analytics to understand user behavior and identify root causes
• Perform Excel-based analysis for reporting, ticket triaging, and internal data validation
• Write and maintain internal documentation and knowledge base articles
• Participate in agile sprint ceremonies and contribute to continuous improvement of the support process.
• Provide feedback to the development team on recurring issues, feature gaps, and customer pain points.

Required Skills & Experience

• 2+ years of hands-on experience in software development.
• Proficient in React.js , JavaScript , TypeScript , and MS Blazor for frontend support and diagnostics.
• Strong working knowledge of C# and .NET framework
• Intermediate to advanced SQL skills (writing queries, debugging database issues).
• strong in Google Analytics for event tracking and analysis.
• Excellent Excel skills (formulas, pivot tables, data cleansing).
• Experience working with Jira , or similar ticket management tools.
• Solid understanding of Agile methodologies and sprint-based workflows.
• Strong analytical thinking and problem-solving ability.
• Excellent communication and cross-functional collaboration skills.

Preferred Qualifications

• Background in software development or computer science.
• Experience working with logging and monitoring tools (e.g., Kibana, Application Insights).
• Exposure to RESTful APIs and network-level debugging.
• Familiarity with DevOps pipelines and release management is a plus.