Total 1,193 engineering job vacancies in Australia

Interested applicants are invited to apply directly at the NUS Career Portal. Please note your application will only be processed if you apply via NUS Career Portal.

NUS Career Portal link: https://careers.nus.edu.sg/job/Research-Fellow-%28Quantum-Engineering%29/33413-en_GB/

We regret that only shortlisted candidates will be notified.

Job Description

We are seeking a highly motivated Research Fellow to join our growing team developing next-generation electrical interfaces to diamond quantum sensors based on nitrogen-vacancy (NV) centers. The successful candidate will lead efforts to develop novel electrical readout, control, and sensing architectures that complement or potentially replace conventional optical detection methods.

The research will combine semiconductor device physics, quantum sensing, spin-dependent transport, and diamond electronics, with opportunities to explore hybrid platforms involving two-dimensional materials, field-effect devices, and advanced electrical detection techniques.

Key Responsibilities

•    Electrical interfaces for diamond quantum systems: Lead efforts to develop and optimize electrical approaches for detecting and controlling NV-center spin and charge states, including device design, fabrication, and characterization.
•    Semiconductor device architectures: Explore p-i-n, Schottky, field-effect, and related device structures for integrating diamond defects with electrical readout and control platforms.
•    Spin-dependent transport and recombination: Investigate spin-dependent electrical, optical, and recombination processes in diamond and related defect systems for quantum sensing applications.
•    Diamond–hybrid devices: Develop hybrid device architectures incorporating diamond with novel and/or CMOS-compatible materials, including graphene, silicon nitride, or other functional layers for electrical transduction.
•    Device modelling and simulation: Model carrier transport, charge-state dynamics, photoelectric processes, recombination pathways, and electrostatic device behaviour to guide experiments and optimize device performance.
•    Team collaboration and mentorship: Work closely with PhD students, research engineers, and undergraduate researchers while contributing to the growth of a multidisciplinary research programme.
•    Cross-disciplinary exploration: Engage with applications spanning quantum sensing, integrated electronics, semiconductor diagnostics, quantum materials, and bioelectronic sensing.

What We Offer
•    Opportunity to pioneer new approaches to electrical quantum sensing and spin-based technologies in diamond.
•    Access to state-of-the-art facilities for diamond characterization, device fabrication, optics, microwave engineering, and electrical measurements.
•    Freedom to pursue ambitious and innovative research directions at the intersection of quantum technology, semiconductor electronics, and advanced sensing.
•    Participation in building a new research programme from the ground up, with significant opportunities for intellectual leadership, technology development, and independent project ownership.
•    Strong emphasis on translation beyond academic publications, including the development of enabling technologies, prototype systems, intellectual property, and real-world sensing applications.
•    Opportunities to contribute to patent generation, technology commercialization, industry partnerships, and potential future spin-out ventures arising from the research.
•    Exposure to a broad range of application areas, including semiconductor diagnostics, advanced manufacturing, quantum instrumentation, materials characterization, healthcare technologies, and next-generation sensing systems.
•    Collaboration with experts across quantum sensing, nanofabrication, semiconductor devices, materials science, photonics, and engineering.
•    Strong support for publishing impactful research while simultaneously pursuing technologies that can deliver tangible scientific, industrial, and societal benefits.

Job Requirements

Job Requirements
•    PhD in Physics, Electrical Engineering, Materials Science, Applied Physics, or a closely related field.
•    Strong background in one or more of the following:
     o   Semiconductor device physics
     o   Quantum sensing or spin physics
     o   Diamond defects and color centers
     o   Electronic transport measurements
     o   Semiconductor characterization techniques
•    Experience with electrical device fabrication and characterization, including Schottky diodes, p-i-n structures, FETs, or related semiconductor devices.
•    Familiarity with low-noise electrical measurements, RF electronics, lock-in techniques, impedance spectroscopy, capacitance measurements, or microwave spin-resonance methods.
•    Experience with carrier transport simulations, semiconductor modelling, finite-element analysis, or device design tools is advantageous.
•    Knowledge of NV centers, spin-dependent recombination, charge-state physics, PDMR, ODMR, or related quantum defect systems is desirable but not strictly required.
•    Experience with graphene, hBN, other two-dimensional materials, or hybrid quantum-semiconductor devices would be highly advantageous.
•    Strong publication record, scientific communication skills, and ability to work independently while contributing effectively within a collaborative team.
•    Open to Fixed Term Contract.

We are looking to speak to Software Engineering Managers!

Key Responsibilities

• Lead, mentor, and develop a team of software engineers, fostering a culture of collaboration, innovation, and continuous improvement.
• Drive technical design, architecture discussions, and implementation strategies for scalable and resilient applications.
• Oversee the end-to-end software development lifecycle, from planning and design to deployment and support.
• Partner with Product Managers, Architects, and cross-functional teams to define technical roadmaps and deliver business objectives.
• Establish engineering best practices, coding standards, CI/CD processes, and quality assurance frameworks.
• Ensure high system availability, performance, security, and scalability across cloud-based applications.
• Manage team capacity, sprint planning, resource allocation, and delivery commitments.
• Conduct performance reviews, career development planning, and coaching for team members.
• Participate in technical decision-making, code reviews, and architecture governance.
• Drive cloud adoption and modernization initiatives leveraging AWS services.
• Monitor project risks and proactively address technical and operational challenges.

Required Qualifications

• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
• 8+ years of software development experience with at least 3+ years in an engineering leadership or management role.
• Strong hands-on experience with: Golang, Java, ReactJs, AWS
• Experience designing and building microservices-based architectures.
• Strong understanding of distributed systems, APIs, event-driven architectures, and cloud-native development.
• Experience with Agile/Scrum methodologies and modern engineering practices.
• Proven ability to lead multiple engineering initiatives simultaneously.
• Excellent stakeholder management, communication, and leadership skills.

EA Registration No: R21101138

"Sanderson-iKas" is the brand name for iKas International (Asia) Pte Ltd, a company incorporated in Singapore under Company UEN No.: 200914065E with EA license number 16S8086.

Website: www.sanderson-ikas.sg

Company Overview

HOYA Electronics focuses on developing optical and extreme ultraviolet (EUV) photomask blanks essential for manufacturing advanced chips used in AI, high-performance computing, 5G, memory, logic, and power devices.

Job Summary

The Application Engineering Technician supports engineers to ensure customer satisfaction, product compliance, and timely resolution of quality issues by collaborating across departments and assisting with new product launches and customer concerns.

Responsibilities

• Receive and accurately log customer complaints to maintain complete records for quality tracking
• Support daily customer quality operations by managing feedback and inquiries promptly
• Assist engineers in performing initial containment actions such as identifying risky products and coordinating rework
• Collaborate with Application Engineering and Quality Assurance Engineers to support root cause investigations
• Prepare 8D reports and document corrective and preventive actions to address quality issues
• Follow up on open quality issues to ensure timely resolution and closure
• Assist in preparing customer quality reports, including defect trends and statistical process control (SPC) data
• Monitor quality trends and report non-conformances to engineers for further action
• Support engineers during customer visits by preparing and delivering required data and samples
• Coordinate testing and assessment of engineering samples to support product evaluation

Required competencies and certifications

• NITEC or Diploma in any Engineering field, or equivalent
• Ability to work in a cleanroom environment and perform overtime as needed

Preferred competencies and qualifications

• 1 to 2 years of relevant semiconductor industry experience or related roles
• Proficiency in Microsoft Office, specifically Excel, to manage data and reports
• Basic knowledge of statistical or quality tools for quality analysis
• Experience in quality documentation and organized record keeping
• Strong communication skills to effectively collaborate with cross-functional teams
• Problem-solving skills to support investigations and corrective actions
• Ability to work independently and as part of a team

Other Information

• Office hour position
• Able to work in a cleanroom environment and perform overtime as and when necessary

HOYA Electronics Singapore Pte Ltd is an equal opportunity employer committed to diversity and inclusion. We do not charge candidates any recruitment fees or unlawful payments for employment consideration.

The Test Engineering Engineer will be responsible for developing, implementing, and maintaining test systems and strategies to support manufacturing operations and new product introduction (NPI). This role ensures product quality, reliability, and compliance with customer and industry standards while driving continuous improvement in test processes.

Job Duties:

Test System Development & Maintenance

• Design, develop, and maintain automated and manual test systems for production.
• Ensure test equipment and fixtures are calibrated, reliable, and compliant with standards.
• Troubleshoot and resolve test-related issues to minimize downtime.

Manufacturing Support

• Provide technical support to production teams on test processes and equipment.
• Analyze test data to identify root causes of failures and recommend corrective actions.
• Collaborate with Quality and Manufacturing teams to ensure smooth operations.

New Product Introduction (NPI)

• Work with R&D and design teams to define test requirements for new products.
• Develop test plans, procedures, and documentation for NPI projects.
• Support pilot builds and validate test systems before mass production.

Continuous Improvement

• Drive initiatives to improve test coverage, efficiency, and cycle time.
• Implement lean and Six Sigma methodologies in test engineering processes.
• Introduce new technologies and automation to enhance test capabilities.

Compliance & Documentation

• Ensure test processes comply with industry standards and customer requirements.
• Maintain accurate documentation of test procedures, results, and system configurations.
• Support audits and certification processes related to testing.

Qualifications:

• Bachelor’s degree in Electrical Engineering, Electronics, Computer Engineering, or related field.
• Experience in test engineering within manufacturing or product development environments.
• Knowledge of test equipment (oscilloscopes, ICT, functional testers) and automation tools.
• Strong analytical and problem-solving skills.
• Excellent communication and teamwork abilities.

Preferred Skills

• Experience with LabVIEW, TestStand, Python, C# or similar test automation platforms.
• Ability to design, build, and maintain test fixtures, jigs, and automated test equipment.
• Knowledge of statistical analysis tools for test data (Minitab, JMP).
• Understanding of NPI processes, validation, and qualification testing.

Job Description

• Industry/ Organization Type: Construction
• Position Title: Technical Engineer
• Working Location: Boon Lay
• Working Hours: 5 days (Mon – Fri, 9.00am – 6.30pm)
• Salary Package: Basic salary up to $4,500 + Variable Bonus
• Duration: 2-years Contract (Convertible to Permanent)

Key Responsibilities

• Prepare technical reports, design calculations, and specifications
• Create 2D and 3D drawings as needed
• Plan and oversee engineering projects
• Conduct feasibility studies and technical assessments, including site investigations
• Carry out site inspections and investigations as required
• Coordinate and communicate with clients, authorities, architects, engineers, contractors, and suppliers to resolve design and development issues
• Conduct research and gather data for projects and Capstone initiatives
• Ensure project compliance with current codes of practice and legal requirements
• Attend training courses provided by the company

APPLY NOW!!!

• Bachelor’s degree in civil & structural engineering, or relevant discipline
• Recognised qualification by the Professional Engineers Board Singapore (PEB) preferred
• Experience in restoration, civil or structural engineering design, or project management is an advantage
• Proficient in Microsoft Office and engineering design software
• Able to perform engineering hand calculations to relevant codes (BS/EC)
• Experience with CAD or BIM is preferred
• Willing to travel as required

Kindly apply through ANY of the following methods:

• Submit your application by clicking the APPLY button;
• Email your resume to Job@anradus.com.sg. Please indicate #65005 on the email subject.

Anradus Application Policy: We value each application and ensure every resume is reviewed. Our process is efficient, typically concluding within 3 working days. If you do not receive communication from us within this timeframe, it's likely that your application has not been shortlisted by our client. In such cases, we recommend continuing your job search to maximize your opportunities.

Anradus Pte Ltd | EA License No. 20C0161 | Angel Lim | EA Reg No.: R1769781

Location

• East

• Door-to-Door Company Transport Provided
  

Responsibilities:

• Perform troubleshooting and repair of aircraft engines

• Disassemble aircraft engines for inspection and maintenance

• Conduct testing and servicing of engine components

• Carry out operational checks on aircraft systems
  

Requirements:

• Minimum Nitec in Engineering

• Open to shift hours
  

Applicants who possess relevant experience for the above responsibilities are most welcome to apply. If you do not possess the above experience, your application will still be considered on individual merits and you may be contacted for other opportunities.

Please submit your updated resume in MS Words format by using the APPLY NOW BUTTON.

By submitting your personal data and/or resume, you give consent to collection, use and disclosure of your personal data and/or resume by the company (or its agent) for the purpose of the processing and administration by the company relating to this job application.

https://www.mci.com.sg/wp-content/uploads/2025/09/MCI-Job-Applicant-Data-Protection-Notice.pdf

**We regret to inform that only shortlisted candidates would be notified.

Lee Shi Le (Cheryl)
CEI Registration Number: R1434624
EA Licence No: 06C2859 (MCI Career Services Pte Ltd)

Engineering & Process Safety Manager

Location: Singapore

Employment Type: Full-Time, Permanent

About the Role

Our client, a growing industrial technology company, is seeking an experienced engineering and process safety professional to lead engineering governance, asset integrity, operational excellence, and process safety initiatives across its operations.

Key Responsibilities

• Drive engineering, asset integrity, and process safety standards across the organization.
• Lead Process Safety Management (PSM) programs, including HAZOP, MOC, risk assessments, incident investigations, and permit-to-work systems.
• Ensure compliance with applicable regulations and recognized engineering standards.
• Improve plant reliability, operational discipline, and safety performance.
• Lead technical reviews, audits, troubleshooting, and root cause investigations.
• Mentor engineering and operations teams while promoting a strong safety culture.
• Manage external stakeholders, including consultants, contractors, and regulatory bodies.
• Support facility expansion and continuous improvement initiatives.

Requirements

• Degree in Chemical, Mechanical, Process Engineering, or related discipline.
• At least 10 years of experience in petrochemical, refining, gas processing, LNG, hydrogen, or similar process industries.
• Strong knowledge of Process Safety Management and engineering governance.
• Familiarity with international standards such as API, ASME, NFPA, IEC, and ISO.
• Proven leadership experience in high-hazard industrial environments.
• Strong stakeholder management, communication, and problem-solving skills.

Job Description:

• In charge of leading and directing projects and ensure they are directed towards a common objective
• Responsible for engaging and communicating with stakeholders to deliver project milestones and comply with strict deadlines
• In charge of ensuring client satisfaction and manage escalations, acting as single point of contact to the client
• In charge of ensuring that the project delivers as-sold solution, remains within the baseline budget and is delivered on time whilst maintaining quality criteria and client satisfaction
• Coordinate activities of the project teams through task delegation, resource assignment and programme management
• Take charge of proper documentation is in order
• Any other duties as assigned

Job Requirement:

• Minimum Nitec in Electronics / Mechanical / Electrical/ Mechatronics Engineering or related field
• Minimum with 1 year working experience in assembly of equipment / machinery industry

To submit your application, please apply online to apply@rn-care.com or call +(65) 6513 5697 for private and confidential discussion.

Your interest will be treated with the strictest of confidence. We regret that only shortlisted candidates will be notified or contacted.

RN Care Pte. Ltd
EA License No: 17C8900

Job Description

• Industry/ Organization Type: Wholesale of Marine Equipment and Accessories
• Position Title: Sales Engineer (Marine Engineering)
• Working Location: Tuas West Road (8 minutes walking distance from the MRT)
• Working Hours: Monday – Friday, 9AM – 5:30PM (One Saturday per month, 9AM – 12PM)
• Salary Package: Up to $3,800 + Variable Bonus + Medical Benefits
• Duration: Permanent

Key Responsibilities

• Prepare and deliver technical presentations to customers, explaining products and services clearly.
• Coordinate with customers and the operations team to assess service job requirements.
• Work with administrative staff to arrange engineer deployment.
• Manage order securing, renewal processes, and oversee overseas delivery/logistics.
• Collaborate with sales teams to understand customer needs and provide appropriate sales or technical support.
• Perform other ad-hoc duties as assigned by the department head.

APPLY NOW!!!

• Diploma/ Bachelor’s degree or higher in Marine Engineering or a relevant field.
• At least 1 year of experience in the marine industry.
• Strong technical knowledge of marine engines and spare parts.
• Excellent communication and interpersonal skills with the ability to build client relationships quickly.
• Analytical and problem-solving mindset.
• Mature, independent, and team-oriented with a positive work attitude.
• Hands-on, proactive, and willing to take initiative.
• Willingness to travel as required.

Kindly apply through ANY of the following methods:

• Submit your application by clicking the APPLY button;
• Email your resume to Job@anradus.com.sg. Please indicate #70837 on the email subject.

Anradus Application Policy: We value each application and ensure every resume is reviewed. Our process is efficient, typically concluding within 3 working days. If you do not receive communication from us within this timeframe, it's likely that your application has not been shortlisted by our client. In such cases, we recommend continuing your job search to maximize your opportunities.

Anradus Pte Ltd | EA License No. 20C0161 | Angel Lim | EA Reg No.: R1769781

Network Engineering Lead (Attractive Bonus/ Central/ Permanent Role)

Responsibility:

• Lead the implementation and administration of multi-vendor network environments, including switches, routers, firewalls, load balancers, and DNS appliances.
• Design, deploy, and support LAN/WAN infrastructure, including SD-WAN, MPLS, VPNs, and ISP connectivity.
• Collaborate with stakeholders to develop network solutions supporting infrastructure, voice, desktop, and video services.
• Ensure network changes comply with change management policies and procedures.
• Develop network proof-of-concepts (POCs) and provide technical guidance to implementation teams.
• Manage network hardware and software lifecycle, including technology refresh initiatives.
• Maintain network documentation, standards, and operational processes.
• Mentor team members and participate in a 24/7 on-call support rotation.

Requirement:

• Bachelor’s Degree Computer science/ Computer Engineering/ Information Security or related certifications.
• Minimum 4 years of network engineering experience in medium to large enterprise environments.
• CCNP certification preferred; Check Point or Palo Alto certifications are advantageous.
• Strong knowledge of LAN/WAN technologies, routing and switching, VPNs, DNS, DHCP, OSPF, BGP, ACLs, NAT, IPv6, and load balancing.
• Hands-on experience with Cisco ACI, Cisco Nexus/Catalyst, and Check Point, Palo Alto, or Fortinet firewalls.
• Solid understanding of infrastructure operations, monitoring, and change/configuration management.
• Experience implementing large-scale network solutions; payments or financial services industry experience is an advantage.

How to apply

Interested candidates who wish to apply for the post, you may click the Apply Now Button or send in your updated resume (in MS Word format) to jackyooi@careerally.com.sg

We regret to inform that only shortlisted candidates will be notified.

Careerally Pte Ltd | EA Licence: 24C2215

Ooi Chuan Yi (Jacky)| EA Registration No: R24122948

CCTV Technician x 2

• Salary: $ 2,450 - $ 3,200
• Address: 3 Bus stop from Tiong Bahru MRT
• Working Hours: Monday - Friday / 8.45am to 6pm
• Alternate Saturday / 8.45am to 1.15pm

 
Job Requirements:

• ITE / Diploma graduate
• Class 3 (Manual or Auto) License

 Job Description:

• Technical knowledge for cabling & tracing work (UTP)  
• Skillset in CCTV / Door Access / Telephony / WIFI setup
• Able to handle customer / basic project coordination
• Basic Programming / IT for above product in item 3 added advantages
• Ad-hoc duties as per assign
   

Interested applicants kindly submit your resume through here or Whatsapp +65 9019 3218 (Joevy), and allow our Consultant to match you with our Clients. No Charges will be incurred by Candidates for any service rendered.

Tan Yu Jing Reg No: R26161199

The Supreme HR Advisory Pte Ltd EA No: 14C7279

Responsibilities

·      Review design package and prepare/ approve shop drawing of RC structural works and temporary works (strut, waler, etc.)

·      Coordination of structural design works with design-relevant counter parties (i.e. civil consultant, accredited checker, and Arch/SWC consultant) and construction team, as well as authorities if necessary

·      Design of temporary works (e.g. scaffolding, false work, form work etc.) related to structural design

·      Lead/ Assist project department in solving design related matters

·      Manage and resolve production, quality, design, engineering and scheduling issue

·      Other duties as required

Requirements

·      Min. 5 yrs engineering experience in civil &structural works

·       Experience in infrastructure projects is mandatory (Land Transport Project preferrable)

·      Site experience in underground roadway project is preferred

·      Design management with consultancy on structural engineering is highly advantageous

·      Proficient knowledge of structural design, analysis software such as STADD and AutoCAD (or Microstation)

·      Good knowledge of authorities’ requirement

To findout more about this opportunity, please contact Lionel Liew at lionel.liew@gmprecruit.com.

We regret that only shortlisted candidates will be notified.

GMP Technologies (S) Pte Ltd  |   EA Licence: 11C3793|   EA Personnel: Lionel Liew   |  Registration No: R1330693

• MNC Company
• Basic $2200 - $2500 + AWS + Variable Bonus
• Excellent Welfare and Benefits + Career progression
• Working location: West
• Working hours: Monday to Friday (8.30am to 5.30pm)

Job Responsibilities:

• Responding to calls for scheduled and unscheduled maintenance service request in accordance with the Company’s Service Agreement
• To trouble-shoot and repair any system abnormality during maintenance service call at the customers’ premises
• To supervise and control sub-contractors’ work quality for maintenance work and to render technical support to the other departments’ staff
• Any others ad hoc duties as assigned

Job Requirements:

• Possess minimum Nitec in Electronics and/or Electrical Engineering or relevant
• Possess minimum 1 year of experience in service and maintenance of alarm, card access and CCTV systems

Candidates are encouraged to apply this position via Apply Now button with the following information in the resume

• Work experiences and job responsibilities
• Current and Expected salary
• Reason for leaving
• Date of availability
• Education background

We regret that only shortlisted candidates will be contacted.

LIONG ZHAO GUAN (R22107632)

EA Recruitment Pte Ltd

EA License No: 21C0492

• Well Established Company
• Basic $3700 - $5000 + Allowance + Variable Bonus
• Excellent Welfare and Benefits + Career progression
• Working location: East / On-site
• Working hours : Normal working hours

Job Responsibilities:

Technical Service & Maintenance:

• Perform periodic servicing, maintenance, and troubleshooting of CRAC/WDS systems.
• Diagnose hardware/software faults, identify root causes, and recommend solutions.
• Conduct equipment power-up/down procedures and respond promptly to e-calls (emergency calls).

Client Support & Training:

• Provide technical support and onsite training on Operation & Maintenance Manuals (OMM).
• Maintain strong client relationships, particularly with site engineers.
• Liaise with customer engineering departments to ensure compliance with company procedures and quality guidelines.

Documentation & Reporting:

• Complete detailed service reports after each servicing/e-call.
• Submit weekly/monthly reports on work activities, progress, and remedial actions.
• Maintain accurate filing, documentation, and tracking of all service records.

Site & Contractor Management:

• Monitor and manage contractor activities to ensure adherence to safety/operational procedures.
• Review site "Events and Actions," implementing corrective measures as needed.
• Plan, execute, and update daily work schedules.

Safety & Compliance:

• Strictly follow data center safety rules, regulations, and quality standards.
• Ensure all work activities comply with occupational safety guidelines.
• Support ad-hoc tasks assigned by superiors

Job Requirements:

• Minimum Diploma/Degree in Mechanical Engineering or equivalent with minimum 1-2 years of relevant experience

Candidates are encouraged to apply this position via Apply Now button with the following information in the resume

• Work experiences and job responsibilities
• Current and Expected salary
• Reason for leaving
• Date of availability
• Education background

We regret that only shortlisted candidates will be contacted.

LIONG ZHAO GUAN (R22107632)

EA Recruitment Pte Ltd

EA License No: 21C0492

• Well Established Company
• Basic $4000 - $5000 + Allowance + Variable Bonus
• Excellent Welfare and Benefits + Career progression
• Working location: West / On-site
• Working Days: Monday to Friday
• Working hours: 8.30am to 5.30pm

Job Responsibilities:

• Planning / Assign sub-contractors and manpower for the maintenance work and from project handover
• Supervising & Managing of Sub-contractor to carry maintenance & servicing works
• Plan and schedule Preventive Maintenance
• Perform routine check, system back-ups & restoration, troubleshooting and upgrading / improvement of system to ensure optimal functioning of BMS/DCS/PLC/SCADA System
• Record servicing & maintenance data and generate service report
• Provide Technical / Operational guidance, engineering solution to the Maintenance Site Facility Management
• Others ad hoc duties as assigned

Job Requirements:

• Minimum Diploma in Mechanical Engineering or equivalent with 1-3 years of experience
• Knowledge on BMS / PLC / HVAC will be a plus point

Candidates are encouraged to apply this position via Apply Now button with the following information in the resume

• Work experiences and job responsibilities
• Current and Expected salary
• Reason for leaving
• Date of availability
• Education background

We regret that only shortlisted candidates will be contacted.

LIONG ZHAO GUAN (R22107632)

EA Recruitment Pte Ltd

EA License No: 21C0492