Oil Refinery Jobs in Saudi Arabia remain an important part of the Kingdom’s energy and industrial employment market. Refinery work covers much more than petroleum engineers: refineries require plant operators, process engineers, mechanical and electrical technicians, instrumentation specialists, maintenance workers, HSE professionals, laboratory technicians, welders, inspectors, planners, warehouse staff and management professionals.

Saudi Arabia’s refinery and downstream sector includes major industrial centres such as Jubail, Yanbu and Rabigh. Current recruitment pages show refinery-related positions at Saudi Aramco and Petro Rabigh, including process engineering, corrosion, reliability, instrumentation, turnaround and refinery-specialist roles.

This 2026 guide covers Oil Refinery Jobs in Saudi Arabia, Refinery Operator Jobs, Process Operator Jobs, Refinery Technician Jobs, Petroleum Engineering Jobs, Maintenance Jobs, HSE Jobs, Refinery Jobs in Jubail, Yanbu and Rabigh, salary expectations, qualifications, foreign-worker opportunities and how to apply, along with practical financial topics including health insurance, life insurance, personal loans, car finance, home loans, property investment and real estate.

Why Saudi Arabia Has Refinery Jobs

Saudi Arabia has one of the world’s largest oil and downstream industries. Refining converts crude oil into products used in transportation, manufacturing, construction, chemicals and other industries.

Refinery operations can involve:

  • Crude oil processing
  • Distillation
  • Hydrocracking
  • Catalytic cracking
  • Sulfur recovery
  • Utilities
  • Tank farms
  • Blending
  • Product storage
  • Export terminals
  • Maintenance
  • Process control
  • Laboratory testing

Saudi Aramco’s current international careers listings include multiple roles specifically requiring refinery experience, including process engineering, corrosion, metering, manufacturing performance, turnaround and maintenance positions.

Oil Refinery Jobs in Saudi Arabia

Common refinery career categories include:

  • Refinery Operator
  • Process Operator
  • Control Room Operator
  • Process Engineer
  • Mechanical Engineer
  • Electrical Engineer
  • Instrumentation Engineer
  • Maintenance Technician
  • Mechanical Technician
  • Electrical Technician
  • Instrument Technician
  • Welder
  • Pipe Fitter
  • Quality Inspector
  • Corrosion Engineer
  • Reliability Engineer
  • HSE Officer
  • Laboratory Technician
  • Warehouse Worker
  • Planner
  • Turnaround Specialist
  • Project Engineer

The higher-skilled positions normally require relevant technical education and documented industrial experience.

Refinery Operator Jobs in Saudi Arabia

A refinery operator monitors and operates processing equipment and helps maintain stable plant production.

Depending on the facility, operators may work with:

  • Distillation units
  • Pumps
  • Compressors
  • Heat exchangers
  • Reactors
  • Furnaces
  • Storage tanks
  • Utilities
  • Control systems

A typical career path is:

Operator Trainee → Field Operator → Senior Operator → Panel Operator → Shift Supervisor

This can become a strong long-term industrial career, but refinery operations are safety-critical and normally require formal training.

Process Operator Jobs

Process operators may monitor:

  • Pressure
  • Temperature
  • Flow
  • Levels
  • Pumps
  • Valves
  • Process alarms
  • Equipment condition

Operators often work rotating shifts because refinery production can run continuously.

Control Room Operator Jobs

Control-room personnel monitor plant processes through distributed control systems.

Relevant skills can include:

  • DCS
  • SCADA
  • Process control
  • Alarm management
  • Emergency procedures
  • Process troubleshooting

Experienced control-room operators can command significantly higher salaries than entry-level plant helpers.

Refinery Process Engineer Jobs

Process engineering is one of the higher-value technical areas.

Responsibilities can include:

  • Process optimisation
  • Production analysis
  • Troubleshooting
  • Energy efficiency
  • Unit performance
  • Process simulation
  • Capacity improvement
  • Technical support

Current Saudi Aramco vacancies include Process Engineer – Fluid Catalytic Cracking, Process Engineer – Sulfur Recovery and Process Engineer – Utilities & Tank Farm, all listed with refinery-experience requirements.

Mechanical Engineer Jobs in Refineries

Mechanical engineers can work with:

  • Pumps
  • Compressors
  • Turbines
  • Heat exchangers
  • Pressure vessels
  • Piping
  • Rotating equipment

Reliability and equipment integrity are major concerns in refinery operations.

Current Aramco listings include roles involving reliability, rotating equipment, compressors and steam turbines.

Electrical Engineer Jobs

Electrical systems keep refinery operations running.

Electrical professionals can work with:

  • Motors
  • Transformers
  • Switchgear
  • Power distribution
  • Emergency power
  • Electrical protection
  • Industrial control systems

Experience in large industrial plants can be valuable.

Instrumentation Engineer Jobs

Instrumentation specialists work with measurement and control systems.

Potential responsibilities include:

  • Sensors
  • Control valves
  • Transmitters
  • DCS
  • PLC
  • Safety instrumented systems
  • Calibration
  • Instrument reliability

Saudi Aramco currently lists Instrumentation Engineer – Refinery Experience Only among its international vacancies.

Refinery Maintenance Jobs

Maintenance is essential because refinery equipment operates under demanding conditions.

Jobs include:

  • Mechanical Maintenance Technician
  • Electrical Technician
  • Instrument Technician
  • Maintenance Planner
  • Reliability Engineer
  • Maintenance Engineer
  • Turnaround Engineer
  • Inspection Specialist

Current Aramco recruitment includes a Maintenance Engineering Specialist – Refinery Experience Only and a Lead Turnaround Engineer – Refinery Experience Only.

Refinery Turnaround Jobs

A turnaround is a major planned shutdown for inspection, maintenance, repair and equipment upgrades.

Turnaround work can require:

  • Mechanical technicians
  • Welders
  • Pipe fitters
  • Inspectors
  • Planners
  • Engineers
  • HSE personnel
  • Project managers

Turnaround experience can be particularly valuable for contractors and specialist maintenance companies.

Refinery Welder Jobs

Industrial welders may work on:

  • Pipelines
  • Pressure vessels
  • Structural components
  • Piping systems
  • Maintenance projects

Specialised welding certifications can significantly improve employability.

However, applicants should verify exactly which welding certification the employer requires.

Pipe Fitter Jobs in Refineries

Pipe fitters work on refinery piping systems.

Duties can involve:

  • Pipe installation
  • Alignment
  • Flanges
  • Valves
  • Maintenance
  • Shutdown work

Previous petrochemical or refinery experience can be useful.

Refinery Corrosion Jobs

Corrosion control protects expensive refinery assets.

Potential roles include:

  • Corrosion Engineer
  • Corrosion Technician
  • Inspection Engineer
  • Materials Specialist

Petro Rabigh’s current careers page lists a Corrosion Engineer vacancy in Rabigh, along with reliability and asset-integrity positions.

Refinery Reliability Jobs

Reliability professionals aim to reduce equipment failures and unplanned downtime.

Work can involve:

  • Failure analysis
  • Preventive maintenance
  • Predictive maintenance
  • Reliability-centred maintenance
  • Root-cause analysis
  • Equipment performance

Petro Rabigh currently lists Senior Reliability Engineer, Reliability-Centered Maintenance Specialist and Root Cause Analysis Specialist positions.

Refinery HSE Jobs

Health, safety and environmental professionals are critical in refinery operations.

Potential roles include:

  • HSE Officer
  • Safety Engineer
  • Process Safety Engineer
  • Environmental Specialist
  • HSE Supervisor
  • HSE Manager

Skills may include:

  • Risk assessment
  • Permit to work
  • Incident investigation
  • Emergency response
  • Process safety
  • Environmental compliance

Refinery Laboratory Jobs

Refinery laboratories test crude oil and finished products.

Laboratory professionals may work on:

  • Chemical analysis
  • Fuel quality
  • Sulfur content
  • Product specifications
  • Sampling
  • Quality assurance

Chemistry, laboratory science and relevant industrial experience can be useful.

Refinery Quality Control Jobs

Quality professionals can monitor:

  • Product specifications
  • Equipment inspection
  • Documentation
  • Materials
  • Welding quality
  • Process compliance

Inspection experience can open pathways into specialised technical roles.

Refinery Jobs in Jubail

Jubail Industrial City is one of Saudi Arabia’s most important industrial centres and is a major location to search for refinery and petrochemical employment.

Potential jobs include:

  • Refinery operators
  • Process engineers
  • Mechanical technicians
  • Instrument technicians
  • HSE professionals
  • Welders
  • Maintenance planners
  • Reliability engineers

SASREF, a major refinery company in Jubail Industrial City, maintains a careers programme and describes opportunities in areas including operations, procurement and other professional functions.

Refinery Jobs in Yanbu

Yanbu is another major Saudi industrial and refining centre.

Job seekers can search for:

  • Refinery operator jobs Yanbu
  • Process engineer jobs Yanbu
  • Maintenance jobs Yanbu
  • Mechanical technician jobs Yanbu
  • Electrical technician jobs Yanbu
  • HSE jobs Yanbu
  • Petrochemical jobs Yanbu

The industrial ecosystem makes Yanbu particularly relevant for candidates with refinery and petrochemical experience.

Refinery Jobs in Rabigh

Rabigh is an important location because of Petro Rabigh, which produces refined products and petrochemicals.

Petro Rabigh’s current careers portal lists vacancies including:

  • Instrumentation/TCS specialist
  • Corrosion Engineer
  • RCA Specialist
  • Senior Reliability Engineer
  • RCM Specialist
  • Process Engineer
  • Asset Management
  • Contracting
  • Finance
  • Talent Management

Saudi Aramco Refinery Jobs

Saudi Aramco is one of the most important employers to consider when researching refinery careers in Saudi Arabia.

Its current international recruitment portal lists refinery-specific positions such as:

  • Downstream Corrosion Engineer
  • Metering Engineer
  • FCC Process Engineer
  • Manufacturing Performance Expert
  • Analyzer Engineer
  • Instrumentation Engineer
  • Sulfur Recovery Process Engineer
  • Utilities & Tank Farm Process Engineer
  • Turnaround Engineer
  • Refinery Maintenance Engineering Specialist

Saudi Aramco Careers

Refinery Jobs for Freshers

Freshers should be realistic about refinery recruitment.

Possible entry routes include:

  • Graduate engineering programmes
  • Operator trainee programmes
  • Technical trainee programmes
  • Internships
  • Apprenticeships
  • Junior technician roles

Saudi Aramco currently has separate graduate and experienced recruitment routes for Saudi applicants.

For international applicants, Aramco says it generally seeks professionals with five to ten years of applicable experience, making direct overseas entry-level recruitment considerably more difficult.

Refinery Jobs for Diploma Holders

Diploma holders can target suitable technical vacancies where the employer accepts their qualification.

Relevant disciplines include:

  • Mechanical
  • Electrical
  • Instrumentation
  • Process technology
  • Chemical technology
  • Industrial maintenance
  • HVAC

The diploma should match the specific job requirements.

Refinery Jobs for Engineers

Engineers can target:

  • Chemical Engineering
  • Mechanical Engineering
  • Electrical Engineering
  • Petroleum Engineering
  • Process Engineering
  • Instrumentation
  • Industrial Engineering
  • Environmental Engineering

Relevant refinery experience can be more important than having a generic engineering degree.

Oil Refinery Jobs for Indians

Indian professionals with refinery or petrochemical experience can search for:

  • Process engineering
  • Mechanical maintenance
  • Electrical maintenance
  • Instrumentation
  • HSE
  • Inspection
  • Reliability
  • Turnaround
  • Operations

For international Aramco roles, the company states that it generally looks for experienced professionals with 5–10 years of applicable experience.

Oil Refinery Jobs for Pakistanis

Pakistani candidates with experience in:

  • Refinery operations
  • Petrochemicals
  • Mechanical maintenance
  • Welding
  • Piping
  • HSE
  • Instrumentation
  • Electrical work

can target relevant Saudi vacancies where expatriate recruitment is permitted.

Oil Refinery Jobs for Bangladeshis

Bangladeshi workers with industrial experience can search for eligible roles in:

  • Maintenance
  • Welding
  • Fabrication
  • Cleaning
  • Warehousing
  • Plant support
  • Technical services

Specialised refinery roles generally require documented experience and technical credentials.

Oil Refinery Jobs for Filipinos

Filipino professionals with oil-and-gas, petrochemical, engineering, maintenance, safety or technical experience can search relevant Saudi opportunities.

English communication can be particularly useful in multinational industrial environments.

Oil Refinery Salary in Saudi Arabia

Refinery salaries vary substantially by company, position, experience, nationality, qualification and contract.

An indicative 2026 market guide is:

PositionApprox. Monthly Salary (SAR)
Refinery Helper1,800 – 2,800
General Plant Worker2,000 – 3,500
Process Operator3,500 – 6,500
Control Room Operator5,000 – 9,000
Mechanical Technician4,000 – 8,000
Electrical Technician4,000 – 8,000
Instrument Technician4,500 – 9,000
Welder / Pipe Fitter3,000 – 7,000
HSE Officer5,000 – 10,000
Maintenance Engineer8,000 – 16,000
Process Engineer10,000 – 20,000+
Reliability Engineer10,000 – 20,000+
Senior Engineer15,000 – 28,000+
Turnaround Specialist10,000 – 22,000+
Refinery Manager25,000 – 50,000+

These are indicative market ranges, not official salary bands.

Actual compensation can be considerably different depending on the employer and employment package.

What Increases Refinery Salary?

Direct Refinery Experience

This is one of the strongest advantages for specialist positions.

Process-Unit Experience

Experience with specific units such as:

  • FCC
  • Hydrocracker
  • Sulfur recovery
  • Distillation
  • Tank farm
  • Utilities

can make a candidate more relevant.

Current Aramco vacancies explicitly specify refinery experience for several specialised roles.

DCS Experience

Control-room and process-control skills can increase employability.

Reliability Skills

Knowledge of:

  • RCA
  • RCM
  • FMEA
  • Predictive maintenance

can support progression into higher-value engineering positions.

HSE Certifications

Relevant safety credentials can strengthen industrial applications.

Turnaround Experience

Shutdown and turnaround experience can be valuable in refinery maintenance.

Refinery Working Hours

Refineries operate continuously, so many employees work:

  • Day shifts
  • Night shifts
  • Rotating shifts
  • Weekend shifts
  • Holiday shifts

Operators and control-room personnel should expect shift work.

Refinery Overtime

Depending on the contract, overtime may be available during:

  • Shutdowns
  • Turnarounds
  • Maintenance campaigns
  • Emergency repairs
  • Production peaks

Do not calculate your expected income using overtime that is not guaranteed in the contract.

Accommodation and Transportation

Some refinery employers and contractors may provide:

  • Accommodation
  • Transportation
  • Medical insurance
  • Annual leave
  • Return air tickets

The package varies by employer.

A SAR 4,000 salary with accommodation and transport can have greater practical value than SAR 5,000 where the employee pays for rent and commuting.

Health Insurance for Refinery Workers

Health insurance is especially important for industrial workers.

Before accepting a position, check:

  • Insurance provider
  • Hospital network
  • Family coverage
  • Deductibles
  • Specialist treatment
  • Prescription coverage
  • Exclusions

Compare the complete employment package rather than salary alone.

Life Insurance for Refinery Workers

Because refinery work involves industrial hazards, workers supporting families may consider life insurance and personal accident protection.

First determine what coverage is already provided by the employer.

Compare:

  • Coverage amount
  • Premium
  • Beneficiaries
  • Exclusions
  • Policy term

Banking for Refinery Employees

A Saudi salary account can help manage:

  • Salary
  • Savings
  • Family remittances
  • Insurance
  • Personal finance
  • Emergency funds

Major Saudi banks include:

  • Al Rajhi Bank
  • Saudi National Bank
  • Riyad Bank
  • Saudi Awwal Bank
  • Banque Saudi Fransi

Compare account and financing terms rather than choosing a bank solely based on promotional offers.

Personal Loans for Refinery Workers

Stable employees may qualify for personal loans, subject to lender requirements.

Before accepting financing, compare:

  • Profit rate
  • Processing fee
  • Monthly payment
  • Repayment period
  • Total repayment
  • Early settlement

A high refinery salary can increase borrowing capacity, but that does not mean maximum borrowing is financially sensible.

Car Finance

Refinery workers may consider car finance, especially when accommodation is outside the industrial city.

Calculate:

Car Payment + Car Insurance + Fuel + Maintenance + Registration

Do not judge affordability using the finance payment alone.

Home Loans and Mortgage Planning

Long-term industrial employees may eventually consider home loans or mortgage financing where eligible.

Before committing, calculate:

  • Down payment
  • Monthly instalment
  • Financing cost
  • Existing personal loans
  • Insurance
  • Maintenance
  • Job stability

A mortgage should remain affordable without overtime.

Real Estate Investment in Saudi Arabia

Refinery workers with stable income may eventually consider real estate investment.

Potential property categories include:

  • Apartments
  • Villas
  • Commercial units
  • Warehouses
  • Industrial property
  • Retail shops

Jubail, Yanbu and Rabigh have industrial economies, but industrial activity alone does not guarantee a good property investment.

Property Investment Near Industrial Cities

Potential demand can come from:

  • Industrial workers
  • Contractors
  • Engineers
  • Families
  • Logistics companies
  • Businesses

Before buying, assess:

  • Purchase price
  • Rental yield
  • Vacancy
  • Service charges
  • Financing cost
  • Local demand
  • Future property supply

Do not buy property purely because a refinery is nearby.

Major Saudi Refinery and Energy Employers

Job seekers can research employers such as:

  • Saudi Aramco
  • Petro Rabigh
  • SASREF
  • SABIC
  • Saudi Electricity Company
  • Other refinery, petrochemical and industrial contractors

Each company has different recruitment policies.

Petro Rabigh currently maintains a dedicated careers portal with active vacancies in Rabigh.

SASREF also maintains an official recruitment process covering sourcing, shortlisting, interviewing, selection and job offers.

Refinery Jobs vs Oil Field Jobs

FeatureRefinery JobsOil Field Jobs
Main LocationIndustrial plantField/site
Main WorkProcessing crude/productsExploration/production
OperationsContinuous plantField operations
Major SkillsProcess + maintenanceDrilling + production
Shift WorkCommonCommon
Technical RolesExtensiveExtensive
Safety RequirementsVery highVery high

Refinery experience is not automatically equivalent to upstream oil-field experience.

Refinery Jobs vs Petrochemical Jobs

Refineries primarily process crude oil into fuels and related products.

Petrochemical facilities focus more heavily on chemical products and feedstocks.

There is significant overlap in:

  • Maintenance
  • Process engineering
  • Instrumentation
  • HSE
  • Reliability
  • Operations

That means refinery experience can sometimes transfer into petrochemical employment.

Career Growth in Refinery Operations

A practical operator pathway is:

Trainee → Field Operator → Senior Operator → Panel Operator → Shift Supervisor → Operations Manager

Technical:

Technician → Senior Technician → Maintenance Supervisor → Maintenance Engineer → Maintenance Manager

Engineering:

Junior Engineer → Engineer → Senior Engineer → Specialist → Engineering Manager

HSE:

HSE Officer → HSE Engineer → HSE Specialist → HSE Manager

How to Find Oil Refinery Jobs in Saudi Arabia

Useful search terms include:

  • Oil Refinery Jobs in Saudi Arabia
  • Refinery Jobs Saudi Arabia
  • Refinery Operator Jobs Saudi Arabia
  • Process Operator Jobs Saudi Arabia
  • Refinery Technician Jobs
  • Refinery Engineer Jobs Saudi Arabia
  • Refinery Maintenance Jobs
  • Refinery HSE Jobs Saudi Arabia
  • Refinery Jobs Jubail
  • Refinery Jobs Yanbu
  • Refinery Jobs Rabigh
  • Petrochemical Jobs Saudi Arabia
  • Process Engineer Jobs Saudi Arabia
  • Mechanical Technician Refinery Jobs
  • Instrumentation Engineer Refinery Jobs
  • Refinery Turnaround Jobs
  • Oil and Gas Jobs Saudi Arabia

Searching by job title + city + refinery is generally more useful than simply searching “oil jobs Saudi Arabia.”

Official Refinery Career Pages

For Aramco, use the official careers portal:

Saudi Aramco Careers

For Petro Rabigh:

Petro Rabigh Careers

Petro Rabigh currently lists active vacancies in engineering, reliability, asset integrity, process engineering and other functions.

For SASREF:

SASREF Careers

Documents Applicants May Need

Depending on the job:

  • Passport
  • CV
  • Degree or diploma
  • Experience certificates
  • Technical certifications
  • Professional registration
  • Medical documentation
  • Work-authorisation documents
  • References

For experienced refinery professionals, experience letters should clearly show the job title, employer, dates and relevant technical responsibilities.

How to Avoid Fake Refinery Jobs

Oil and gas jobs are heavily targeted by recruitment scams because applicants expect high salaries.

Be suspicious of:

  • “Guaranteed Aramco refinery job”
  • “Saudi refinery visa”
  • “No interview required”
  • “Pay registration fee”
  • “Pay visa processing fee”
  • “Pay medical fee to recruiter”
  • WhatsApp-only recruitment
  • Personal bank-account payment
  • Extremely high salary for an unskilled position

Saudi Aramco’s official international recruitment guidance says it generally seeks experienced professionals and provides a formal hiring process.

Never pay an unknown person for a guaranteed refinery job.

Frequently Asked Questions

What is the salary for refinery jobs in Saudi Arabia?

Entry-level industrial roles may start around SAR 1,800–3,500, while experienced technicians and operators can earn more. Engineers, specialists and managers can earn substantially higher salaries. These are indicative ranges rather than official company salary bands.

Are refinery jobs available in Jubail?

Yes. Jubail is a major industrial centre and home to refinery and petrochemical employers. SASREF, for example, operates in Jubail Industrial City and maintains a careers programme.

Are there refinery jobs in Yanbu?

Yes. Yanbu is a major Saudi industrial and refining centre, making it an important city to include in refinery and petrochemical job searches.

Are there refinery jobs in Rabigh?

Yes. Petro Rabigh currently lists multiple technical and engineering vacancies in Rabigh, including process engineering, corrosion and reliability positions.

Can foreigners apply for Saudi refinery jobs?

Some employers recruit international professionals. For example, Aramco maintains an international applicant route and says it generally seeks candidates with 5–10 years of applicable experience.

Can freshers get refinery jobs?

Saudi Aramco has graduate pathways for Saudi applicants, but international freshers should not assume that they can directly enter specialist refinery positions.

Which refinery skills are most valuable?

Process operations, DCS, instrumentation, reliability, rotating equipment, corrosion, process engineering, HSE and turnaround experience can all be valuable.

Are refinery jobs dangerous?

Refinery work involves significant industrial hazards, so safety procedures, training, PPE and permit systems are critical.

Do refinery jobs provide accommodation?

Some employers and contractors provide accommodation and transportation, but this varies by contract.

Can refinery workers get personal loans?

Potentially, depending on salary, employer, residency and lender eligibility.

Can refinery workers invest in Saudi real estate?

Eligible workers can explore property investment subject to applicable Saudi laws and financing requirements.

How do I find genuine refinery jobs?

Use official company career portals such as Aramco, Petro Rabigh and SASREF, and verify the employer before submitting documents or accepting an offer.

Conclusion

Oil Refinery Jobs in Saudi Arabia offer career opportunities across plant operations, process engineering, mechanical and electrical maintenance, instrumentation, reliability, corrosion, inspection, HSE, laboratory work, turnaround projects and industrial management.

The strongest refinery markets to target include Jubail, Yanbu and Rabigh, while major employers such as Saudi Aramco, Petro Rabigh and SASREF provide official recruitment channels. Current vacancy data confirms that refinery-specific positions are actively listed across process engineering, instrumentation, maintenance, reliability and other specialist areas.

For beginners, the realistic route is often through technical training, operator programmes, apprenticeships or junior industrial roles. For experienced professionals, direct refinery experience in process units, DCS, reliability, turnaround, corrosion, instrumentation or maintenance can significantly strengthen an application.

The financial side should also be considered beyond salary. Health insurance, life insurance, accommodation, transportation, banking, personal loans, car finance, home loans, mortgage planning and real estate investment can materially change the value of a Saudi employment package.

Most importantly, use official recruitment channels, verify the exact employer and job description, confirm salary and benefits in writing, and never pay an unknown recruiter for a guaranteed Saudi refinery job.

Disclaimer

This article is for general informational purposes only. It is not an official recruitment announcement, employment offer, immigration service or financial advice. Salary figures are indicative market estimates and are not official salary bands for Aramco, Petro Rabigh, SASREF or any other employer. Job availability, qualifications, nationality requirements, benefits and recruitment procedures can change by company and position. Insurance, personal loans, banking, car finance, mortgages and real estate decisions depend on individual circumstances and applicable Saudi regulations. Always verify current vacancies and employment terms through the relevant employer’s official career portal.