sales engineer

devops & support engineer

application support engineer Jobs in Muscat

application support engineer

application support engineer ( hardware & software ) Jobs in Muscat

application support engineer ( hardware & software )

technical sepport engineer Jobs in Muscat

technical sepport engineer

technical support engineer

TOZED KANGWEI MALAYSIA SDN. BHD.

<p><b>Description:</b></p><p>1. Collect and summarize customers' feedback on product and technology-related issues such as requirements, inquiries, complaints etc., and provide timely, correct and complete feedback on the issues to company, track the process of internal resolution and resolution results until the customer confirms the closure of the issue.</p><p>2. Responsible for pre-sales access testing of new products,includes both hardware and software testing and requires timely and accurate feedback to the company on test results.</p><p>3. Communicate with customers on products and technologies, and enhance customer satisfaction.</p><p>4. Responsible for after-sales, including but not limited to on-site maintenance,product installation, etc.</p><p><b>Job requirements:</b></p><p>1. Majoring in network, communication engineering, electronic information engineering, with bachelor degree or above.</p><p>2. Good communication and coordination skills, with good emergency response ability for unexpected events.</p><p>3. Strong sense of responsibility, strong execution and professionalism.</p><p>4. Energetic and able to handle high-intensity work.</p><p>5. Ability to work independently, manage time effectively, and handle multiple tasks simultaneously.</p><p>6. Fluent in English and Arabic.</p><p>7. Familiarity with communication products (routers/AP/CPE/ONT, etc.) is preferred.</p><p>8. Experience in working with operators would be a plus.</p><p>Job Type: Full-time</p><p>Pay: RO350.000 - RO600.000 per month</p>

Technical Support Engineer

Klystron Global LLC

<p><b>Job Summary</b></p><p>Application Support Engineer responsibilities include resolving Hardware issues, Application issues, network issues, configuring systems and using remote connections to provide immediate support. You will diagnose and troubleshoot software and hardware problems and help our customers install applications and programs. To be qualified for this role, you should hold a degree in a relevant field, like Computer Science, IT or Software Engineering. Microsoft, Cisco, Linux or similar certification is a plus. If you&rsquo;re naturally a helper, enjoy assisting people with computer issues and can explain technical details simply, we&rsquo;d like to meet you. Ultimately, you will be a person our customers trust. They will rely on you to provide timely and accurate solutions to their technical problems.</p><p><b>Job Responsibilities</b></p><ul><li>Research and identify solutions to software and hardware issues</li></ul><ul><li>Diagnose and troubleshoot technical issues, including account setup and network configuration</li></ul><ul><li>Ask customers targeted questions to quickly understand the root of the problem</li></ul><ul><li>Track computer system issues through to resolution, within agreed time limits</li></ul><ul><li>Talk clients through a series of actions, either via phone, email or chat, until they&rsquo;ve solved a technical issue</li></ul><ul><li>Properly escalate unresolved issues to appropriate internal teams (e.g. software developers)</li></ul><ul><li>Provide prompt and accurate feedback to customers</li></ul><ul><li>Refer to internal database or external resources to provide accurate tech solutions</li></ul><ul><li>Ensure all issues are properly logged</li></ul><ul><li>Priorities and manage several open issues at one time</li></ul><ul><li>Follow up with clients to ensure their IT systems are fully functional after troubleshooting</li></ul><ul><li>Prepare accurate and timely reports</li></ul><ul><li>Document technical knowledge in the form of notes and manuals</li></ul><ul><li>Maintain jovial relationships with clients</li></ul><p><b>Job Requirements</b></p><ul><li>Proven work experience as a Technical Support Engineer, Desktop Support Engineer, IT Help Desk Technician or similar role</li></ul><ul><li>Hands-on experience with Windows/Linux/Mac OS environments</li></ul><ul><li>Hands on experience in supporting ATM or Kiosks</li></ul><ul><li>Hands on experience in supporting applications</li></ul><ul><li>Good understanding of SQL</li></ul><ul><li>Good understanding of computer systems, mobile devices and other tech products</li></ul><ul><li>Ability to diagnose and troubleshoot basic technical issues</li></ul><ul><li>Familiarity with remote desktop applications and help desk software (eg. Zendesk)</li></ul><ul><li>Excellent problem-solving and communication skills</li></ul><ul><li>Ability to provide step-by-step technical help, both written and verbal</li></ul><ul><li>BS degree in Information Technology, Computer Science or relevant field</li></ul><ul><li>Additional certification in Microsoft, Linux, Cisco or similar technologies is a plus</li></ul><ul><li>Good command of English.</li></ul><p>Job Types: Full-time, Permanent</p><p>Pay: RO300.000 - RO500.000 per month</p><p>Application Question(s):</p><ul><li>Do you have Oman Driving License?</li></ul>

Application Support Engineer

Klystron Global

<p>Job Responsibilities</p><ul><li>Research and identify solutions to software and hardware issues</li><li>Diagnose and troubleshoot technical issues, including account setup and network configuration</li><li>Ask customers targeted questions to quickly understand the root of the problem</li><li>Track computer system issues through to resolution, within agreed time limits</li><li>Talk clients through a series of actions, either via phone, email or chat, until they&rsquo;ve solved a technical issue</li><li>Properly escalate unresolved issues to appropriate internal teams (e.g. software developers)</li><li>Provide prompt and accurate feedback to customers</li><li>Refer to internal database or external resources to provide accurate tech solutions</li><li>Ensure all issues are properly logged</li><li>Prioritize and manage several open issues at one time</li><li>Follow up with clients to ensure their IT systems are fully functional after troubleshooting</li><li>Prepare accurate and timely reports</li><li>Document technical knowledge in the form of notes and manuals</li><li>Maintain jovial relationships with clients Job Requirements</li><li>Proven work experience as a Technical Support Engineer, Desktop Support Engineer, IT Help Desk Technician or similar role</li><li>Hands-on experience with Windows/Linux/Mac OS environments</li><li>Hands on experience in supporting ATM or Kiosks</li><li>Hands on experience in supporting applications</li><li>Good understanding of SQL</li><li>Good understanding of computer systems, mobile devices and other tech products</li><li>Ability to diagnose and troubleshoot basic technical issues</li><li>Familiarity with remote desktop applications and help desk software (eg. Zendesk)</li><li>Excellent problem-solving and communication skills</li><li>Ability to provide step-by-step technical help, both written and verbal</li><li>BS degree in Information Technology, Computer Science or relevant field</li><li>Additional certification in Microsoft, Linux, Cisco or similar technologies is a plus</li><li>Good command of English.</li><li>Driving license is mandatory</li></ul><p>Job Type: Full-time</p><p>Pay: RO300.000 - RO400.000 per month</p>

Application Support Engineer ( Hardware & Software )

<p><b>Description:</b></p><p>1. Collect and summarize customers' feedback on product and technology-related issues such as requirements, inquiries, complaints etc., and provide timely, correct and complete feedback on the issues to company, track the process of internal resolution and resolution results until the customer confirms the closure of the issue.</p><p>2. Responsible for pre-sales access testing of new products,includes both hardware and software testing and requires timely and accurate feedback to the company on test results.</p><p>3. Communicate with customers on products and technologies, and enhance customer satisfaction.</p><p>4. Responsible for after-sales, including but not limited to on-site maintenance,product installation, etc.</p><p><b>Job requirements&#65306;</b></p><p>1. Majoring in network, communication engineering, electronic information engineering, with bachelor degree or above.</p><p>2. Good communication and coordination skills, with good emergency response ability for unexpected events.</p><p>3. Strong sense of responsibility, strong execution and professionalism.</p><p>4. Energetic and able to handle high-intensity work.</p><p>5. Ability to work independently, manage time effectively, and handle multiple tasks simultaneously.</p><p>6. Fluent in English and Arabic.</p><p>7. Familiarity with communication products (routers/AP/CPE/ONT, etc.) is preferred.</p><p>8. Experience in working with operators would be a plus.</p><p>Job Type: Full-time</p><p>Pay: RO450.000 - RO600.000 per month</p>

Technical Sepport Engineer

TRACTEBEL

<div>
 <strong>
  Job title
  <br/>
  <br/>
 </strong>
 Substation Electrical Engineer
 <br/>
 <br/>
 <strong>
  Location(s)
  <br/>
  <br/>
 </strong>
 Oman - Mahout
 <br/>
 <br/>
 <strong>
  Ready to engineer your positive impact?
  <br/>
  <br/>
 </strong>
 Then join Tractebel, part of the ENGIE Group, and our 5,600 passionate experts around the globe, driven by shaping a more sustainable world every day. It&rsquo;s your chance to be a part of the adventure of the century: accelerating the energy transition &ndash; while enhancing people&rsquo;s lives through meaningful projects. Make your contribution to carbon neutrality in markets like nuclear, renewables, power &amp; gas, electrical grids, hydropower &amp; dams, water resources &amp; supply, desalination, complex &amp; high-tech buildings, transport infrastructures, and ports &amp; waterways.
 <br/>
 <br/>
 Are you ready to make a difference? Then we look forward to meeting you!
 <br/>
 <br/>
 <strong>
  What We Offer
  <br/>
  <br/>
 </strong>
 Tractebel is more than a place to work. It&rsquo;s your chance to evolve alongside top experts on impactful projects around the world. It&rsquo;s an environment built on team spirit, where you can reach your highest potential.
 <br/>
 <br/>
 We actively support the development of our people, and the opportunities for growth within the ENGIE Group are wide open.
 <br/>
 <br/>
 We offer a competitive salary package including paid holidays, performance-based bonuses (for eligible roles), comprehensive health insurance, and ENGIE stock options, among other perks.
 <br/>
 <br/>
 Flexible, hybrid arrangements allow one day of remote work per week.
 <br/>
 <br/>
 We value team spirit and celebrate our achievements with events like our annual Iftar gathering and year-end festivities.
 <br/>
 <br/>
 <strong>
  Your mission
  <br/>
  <br/>
 </strong>
 As Substation Electrical Engineer in our Transmission &amp; Distribution department, you will assist the Resident Engineer in supervising electrical works for high-voltage substations. You will ensure that construction activities are carried out in compliance with the contract documents, drawings, method statements, and industry standards. Your role will focus on site inspections, contractor coordination, and ensuring quality and safety during project execution.
 <br/>
 <br/>
 <strong>
  Your Key Responsibilities
  <br/>
  <br/>
 </strong>
 <ul>
  <li>
   Assist the Resident Engineer in day-to-day supervision of substation electrical works.
  </li>
  <li>
   Conduct regular site inspections to verify contractor performance and compliance with drawings and approved methods.
  </li>
  <li>
   Liaise with all technical disciplines and attend Site Technical Coordination Meetings.
  </li>
  <li>
   Review contractor submissions, shop drawings, and construction-related documents.
  </li>
  <li>
   Monitor and witness construction and testing activities to ensure contract compliance.
  </li>
  <li>
   Support final inspections, completion certification, and handover of works.
  </li>
  <li>
   Ensure effective implementation of safety measures on site.
   <br/>
   <br/>
  </li>
 </ul>
 <strong>
  Your Qualifications
  <br/>
  <br/>
 </strong>
 <ul>
  <li>
   Bachelor&rsquo;s degree in Electrical Engineering (approved by relevant authorities).
  </li>
  <li>
   Minimum 8 years&rsquo; experience in electrical engineering projects, with proven experience in substation works.
  </li>
  <li>
   Previous OETC approval is preferred.
   <br/>
   <br/>
  </li>
 </ul>
 <strong>
  Who You Are
  <br/>
  <br/>
 </strong>
 <ul>
  <li>
   Strong knowledge of electrical engineering practices in high-voltage substations.
  </li>
  <li>
   Skilled in site supervision, contractor coordination, and reviewing technical submissions.
  </li>
  <li>
   Familiar with regional authority standards and utility requirements.
   <br/>
   <br/>
  </li>
 </ul>
 <strong>
  Your Soft Skills
  <br/>
  <br/>
 </strong>
 <ul>
  <li>
   Strong interpersonal and coordination abilities.
  </li>
  <li>
   Detail-oriented and proactive in resolving technical/site issues.
  </li>
  <li>
   Comfortable working in multicultural, fast-paced environments.
   <br/>
   <br/>
  </li>
 </ul>
 <strong>
  Preference
  <br/>
  <br/>
 </strong>
 <ul>
  <li>
   Prior experience with OETC or other major utilities will be highly preferred.
   <br/>
   <br/>
  </li>
 </ul>
 <strong>
  Who We Are
  <br/>
  <br/>
 </strong>
 Our top priorities are people, ethics, safety, and sustainability. With Tractebel, you are uniquely positioned to make a positive impact on global net-zero targets. The driving force behind reaching these goals is our greatest asset: you. Our people come first, and our strength is in our diversity. Because diversity leads to fresh perspectives that drive performance and innovation!
 <br/>
 <br/>
 Find out more about Tractebel, our activities and why you should join us here!
 <br/>
 <br/>
 As part of the 96,000-strong ENGIE Group, your career path in pioneering low-carbon solutions around the world knows no limits. Every day is your opportunity to shape a more sustainable world.
 <br/>
 <br/>
 Business Unit: Tractebel
 <br/>
 <br/>
 Division: Tractebel Div2
 <br/>
 <br/>
 Legal Entity: TRACTEBEL ENGINEERING CONSULTANCY LLC OMAN
 <br/>
 <br/>
 Professional Experience: Skilled ( &gt;3 experience &lt;15 years)
 <br/>
 <br/>
 Education Level: Bachelor's Degree
 <br/>
 <br/>
 Company Name: Tractebel
</div>


Electrical Engineer Substation - Masirah

<div>Job Description
<div><div><div><div>Electrical Engineer Substation - Masirah
</div></div></div></div><div><div><div><div>Posting Start Date: 12/4/25
</div></div></div></div><div><div><div><div>Requisition ID: 57804
</div></div></div></div><div><div>Apply now
</div></div><div><div><h2 class="jobSectionHeader"><b>Informations g&eacute;n&eacute;rales
</b></h2></div></div><div><div><div><div>Muscat, Oman, 100 | Muscat, Oman, 100
</div></div></div></div><div><div><div><div>TRACTEBEL ENGINEERING CONSULTANCY LLC OMAN
</div></div></div></div><div><div><div><div>Skilled ( &gt;3 experience &lt;15 years)
</div></div></div></div><div><div><div><div>Engineering
</div></div></div></div><div><div><div><div>Fixed-Term
</div></div></div></div><div><div><div><div>Full - Time
</div></div></div></div><p></p><div><div><div><div><p><b>Job title
</b></p><p>Substation Electrical Engineer
</p><p></p><p><b>Location(s)
</b></p><p>Oman - Mahout
</p><p></p><p><b>Ready to engineer your positive impact?
</b></p><p>Then join Tractebel, part of the ENGIE Group, and our 5,600 passionate experts around the globe, driven by shaping a more sustainable world every day. It&rsquo;s your chance to be a part of the adventure of the century: accelerating the energy transition &ndash; while enhancing people&rsquo;s lives through meaningful projects. Make your contribution to carbon neutrality in markets like nuclear, renewables, power &amp; gas, electrical grids, hydropower &amp; dams, water resources &amp; supply, desalination, complex &amp; high-tech buildings, transport infrastructures, and ports &amp; waterways.
</p><p>Are you ready to make a difference? Then we look forward to meeting you!
</p><p></p><p><b>What we offer
</b></p><p>Tractebel is more than a place to work. It&rsquo;s your chance to evolve alongside top experts on impactful projects around the world. It&rsquo;s an environment built on team spirit, where you can reach your highest potential.
</p><p>We actively support the development of our people, and the opportunities for growth within the ENGIE Group are wide open.
</p><p>We offer a competitive salary package including paid holidays, performance-based bonuses (for eligible roles), comprehensive health insurance, and ENGIE stock options, among other perks.
</p><p>Flexible, hybrid arrangements allow one day of remote work per week.
</p><p>We value team spirit and celebrate our achievements with events like our annual Iftar gathering and year-end festivities.
</p><p></p><p><b>Your mission
</b></p><p>As Substation Electrical Engineer in our Transmission &amp; Distribution department, you will assist the Resident Engineer in supervising electrical works for high-voltage substations. You will ensure that construction activities are carried out in compliance with the contract documents, drawings, method statements, and industry standards. Your role will focus on site inspections, contractor coordination, and ensuring quality and safety during project execution.
</p><p></p><p><b>Your key responsibilities
</b></p><div>&bull; Assist the Resident Engineer in day-to-day supervision of substation electrical works.
<br>
<ul><li>Conduct regular site inspections to verify contractor performance and compliance with drawings and approved methods.
</li><li>Liaise with all technical disciplines and attend Site Technical Coordination Meetings.
</li><li>Review contractor submissions, shop drawings, and construction-related documents.
</li><li>Monitor and witness construction and testing activities to ensure contract compliance.
</li><li>Support final inspections, completion certification, and handover of works.
</li><li>Ensure effective implementation of safety measures on site.
</li></ul></div><p></p><p><b>Your qualifications
</b></p><div>&bull; Bachelor&rsquo;s degree in Electrical Engineering (approved by relevant authorities).
<br>
<ul><li>Minimum 8 years&rsquo; experience in electrical engineering projects, with proven experience in substation works.
</li><li>Previous OETC approval is preferred.
</li></ul></div><p></p><p><b>Who you are
</b></p><div>&bull; Strong knowledge of electrical engineering practices in high-voltage substations.
<br>
<ul><li>Skilled in site supervision, contractor coordination, and reviewing technical submissions.
</li><li>Familiar with regional authority standards and utility requirements.
</li></ul></div><p></p><p><b>Your soft skills
</b></p><div>&bull; Strong interpersonal and coordination abilities.
<br>
<ul><li>Detail-oriented and proactive in resolving technical/site issues.
</li><li>Comfortable working in multicultural, fast-paced environments.
</li></ul></div><p></p><p><b>Preference
</b></p><p>&bull; Prior experience with OETC or other major utilities will be highly preferred.
</p><p></p><p><b>Who we are
</b></p><p>Our top priorities are people, ethics, safety, and sustainability. With Tractebel, you are uniquely positioned to make a positive impact on global net-zero targets. The driving force behind reaching these goals is our greatest asset: you. Our people come first, and our strength is in our diversity. Because diversity leads to fresh perspectives that drive performance and innovation!
</p><p>Find out more about Tractebel, our activities and why you should join us here!
</p><p>As part of the 96,000-strong ENGIE Group, your career path in pioneering low-carbon solutions around the world knows no limits. Every day is your opportunity to shape a more sustainable world.<br>
</p></div></div></div></div><p></p><div><div><div><div>Business Unit: Tractebel
</div></div></div></div><div><div><div><div>Division: Tractebel Div2
</div></div></div></div><div><div><div><div>Legal Entity: TRACTEBEL ENGINEERING CONSULTANCY LLC OMAN
</div></div></div></div><div><div><div><div>Professional Experience: Skilled ( &gt;3 experience &lt;15 years)
</div></div></div></div><div><div><div><div>Education Level: Bachelor's Degree
</div></div></div></div><div><div><div><div>Company Name: Tractebel
</div></div></div></div><div><div><div><h3 class="jobSectionHeader"><b>Nos valeurs
</b></h3><p>L&rsquo;inclusion et la diversit&eacute; sont au c&oelig;ur de notre politique de ressources humaines. Nous assurons l'&eacute;galit&eacute; des chances entre tous les candidats et sommes engag&eacute;s &agrave; cr&eacute;er l&rsquo;environnement de travail le plus accessible possible.</p></div></div></div></div>

ENGIE

<div></div><div><div><div><div><div><div><p><b>Job title</b></p>
<p>
Substation Electrical Engineer</p>
<p></p>
<p><b>Location(s)</b></p>
<p>
Oman - Mahout</p>
<p></p>
<p><b>Ready to engineer your positive impact?</b></p>
<p>
Then join Tractebel, part of the ENGIE Group, and our 5,600 passionate experts around the globe, driven by shaping a more sustainable world every day. It&rsquo;s your chance to be a part of the adventure of the century: accelerating the energy transition &ndash; while enhancing people&rsquo;s lives through meaningful projects. Make your contribution to carbon neutrality in markets like nuclear, renewables, power &amp; gas, electrical grids, hydropower &amp; dams, water resources &amp; supply, desalination, complex &amp; high-tech buildings, transport infrastructures, and ports &amp; waterways.</p>
<p>
Are you ready to make a difference? Then we look forward to meeting you!</p>
<p></p>
<p><b>What we offer</b></p>
<p>
Tractebel is more than a place to work. It&rsquo;s your chance to evolve alongside top experts on impactful projects around the world. It&rsquo;s an environment built on team spirit, where you can reach your highest potential.</p>
<p>
We actively support the development of our people, and the opportunities for growth within the ENGIE Group are wide open.</p>
<p>
We offer a competitive salary package including paid holidays, performance-based bonuses (for eligible roles), comprehensive health insurance, and ENGIE stock options, among other perks.</p>
<p>
Flexible, hybrid arrangements allow one day of remote work per week.</p>
<p>
We value team spirit and celebrate our achievements with events like our annual Iftar gathering and year-end festivities.</p>
<p></p>
<p><b>Your mission</b></p>
<p>
As Substation Electrical Engineer in our Transmission &amp; Distribution department, you will assist the Resident Engineer in supervising electrical works for high-voltage substations. You will ensure that construction activities are carried out in compliance with the contract documents, drawings, method statements, and industry standards. Your role will focus on site inspections, contractor coordination, and ensuring quality and safety during project execution.</p>
<p></p>
<p><b>Your key responsibilities</b></p>
<ul><li>Assist the Resident Engineer in day-to-day supervision of substation electrical works.</li><li>Conduct regular site inspections to verify contractor performance and compliance with drawings and approved methods.</li><li>Liaise with all technical disciplines and attend Site Technical Coordination Meetings.</li><li>Review contractor submissions, shop drawings, and construction-related documents.</li><li>Monitor and witness construction and testing activities to ensure contract compliance.</li><li>Support final inspections, completion certification, and handover of works.</li><li>Ensure effective implementation of safety measures on site.</li></ul>
<p></p>
<p><b>Your qualifications</b></p>
<ul><li>Bachelor&rsquo;s degree in Electrical Engineering (approved by relevant authorities).</li><li>Minimum 8 years&rsquo; experience in electrical engineering projects, with proven experience in substation works.</li><li>Previous OETC approval is preferred.</li></ul>
<p></p>
<p><b>Who you are</b></p>
<ul><li>Strong knowledge of electrical engineering practices in high-voltage substations.</li><li>Skilled in site supervision, contractor coordination, and reviewing technical submissions.</li><li>Familiar with regional authority standards and utility requirements.</li></ul>
<p></p>
<p><b>Your soft skills</b></p>
<ul><li>Strong interpersonal and coordination abilities.</li><li>Detail-oriented and proactive in resolving technical/site issues.</li><li>Comfortable working in multicultural, fast-paced environments.</li></ul>
<p></p>
<p><b>Preference</b></p>
<ul><li>Prior experience with OETC or other major utilities will be highly preferred.</li></ul>
<p></p>
<p><b>Who we are</b></p>
<p>
Our top priorities are people, ethics, safety, and sustainability. With Tractebel, you are uniquely positioned to make a positive impact on global net-zero targets. The driving force behind reaching these goals is our greatest asset: you. Our people come first, and our strength is in our diversity. Because diversity leads to fresh perspectives that drive performance and innovation!</p>
<p>
Find out more about Tractebel, our activities and why you should join us here!</p>
<p>
As part of the 96,000-strong ENGIE Group, your career path in pioneering low-carbon solutions around the world knows no limits. Every day is your opportunity to shape a more sustainable world.</p><br>
<p></p>
</div></div></div></div><div></div><div><div><div><div><b>Business Unit: </b>Tractebel
</div></div></div></div><div><div><div><div><b>Division: </b>Tractebel Div2
</div></div></div></div><div><div><div><div><b>Legal Entity: </b>TRACTEBEL ENGINEERING CONSULTANCY LLC OMAN
</div></div></div></div><div><div><div><div><b>Professional Experience: </b>Skilled ( &gt;3 experience &lt;15 years)
</div></div></div></div><div><div><div><div><b>Education Level: </b>Bachelor's Degree
</div></div></div></div><div><div><div><div><b>Company Name: </b>Tractebel
</div></div></div></div><div><div><div><p>Why this matters to us</p>
<p>Our organisation is an equal opportunity employer and is committed to fostering a diverse and inclusive workplace. We offer reasonable accommodations upon request for individuals with disabilities.</p></div></div></div></div></div>

Explore 407+ Technical support engineer in Muscat this December. Find roles across top companies and apply now to boost your career.

407 technical support engineer jobs IN Muscat

Technical Support Engineer

Application Support Engineer

Application Support Engineer ( Hardware & Software )

Technical Sepport Engineer

Electrical Engineer Substation - Masirah

Electrical Engineer Substation - Masirah

Electrical Engineer Substation - Masirah