Twenty Holland codes and UK jobs
Your three highest interest areas, in order
The interests test gives you a three-letter code: your three highest areas, highest first. O*NET describes over 900 occupations with the same codes. The twenty below are the codes that the most O*NET occupations carry, grouped by first letter, each with one line on what the combination means and UK jobs mapped from O*NET occupations with that exact code.
If your code is not here, read the page for your first letter and then your second: the first letter says most about the work, and the order of the second and third matters less than the letters themselves.
RCI
realistic, conventional, investigative
RCI: practical work to a procedure, with some technical understanding: operating, maintaining and inspecting.
- Construction plant operator Operating Engineers and Other Construction Equipment Operators
- Train driver Locomotive Engineers
- Motor mechanic Automotive Service Technicians and Mechanics
- Radiographer Radiologic Technologists and Technicians
- Wind turbine technician Wind Turbine Service Technicians
RIC
realistic, investigative, conventional
RIC: engineering and technical work: designing, building and testing things that have to work.
- Civil engineer Civil Engineers
- Mechanical engineer Mechanical Engineers
- Electrical engineer Electrical Engineers
- Chemical engineer Chemical Engineers
- Dental technician Dental Laboratory Technicians
RCE
realistic, conventional, enterprising
RCE: hands-on work with responsibility for people or a vehicle: driving, cooking, policing, flying.
- Police officer Police and Sheriff's Patrol Officers
- Chef Cooks, Restaurant
- Airline pilot Airline Pilots, Copilots, and Flight Engineers
- Train conductor Railroad Conductors and Yardmasters
- Merchant navy deck officer Captains, Mates, and Pilots of Water Vessels
RCS
realistic, conventional, social
RCS: practical work done for people, one at a time: prisons, salons, buses, operating theatres.
- Prison officer Correctional Officers and Jailers
- Hairdresser Hairdressers, Hairstylists, and Cosmetologists
- Bus or coach driver Bus Drivers, Transit and Intercity
- Operating department practitioner Surgical Technologists
- Embalmer Embalmers
RAC
realistic, artistic, conventional
RAC: making things by hand to a design: flowers, sound, furniture, cloth, stone.
- Florist Floral Designers
- Studio sound engineer Sound Engineering Technicians
- Furniture restorer Furniture Finishers
- Pattern cutter Fabric and Apparel Patternmakers
- Stonemason Stone Cutters and Carvers, Manufacturing
IRC
investigative, realistic, conventional
IRC: laboratory and field science: measuring, analysing and recording.
- Chemist Chemists
- Physicist Physicists
- Microbiologist Microbiologists
- Meteorologist Atmospheric and Space Scientists
- Forensic scientist Forensic Science Technicians
ICR
investigative, conventional, realistic
ICR: technical investigation to a method: networks, biology, transport, safety.
- Network engineer Computer Network Architects
- Biologist Biologists
- Biotechnologist Molecular and Cellular Biologists
- Transport planner Transportation Planners
- Health and safety adviser Occupational Health and Safety Specialists
ISR
investigative, social, realistic
ISR: medicine with people and with your hands: eyes, anaesthetics, wards, surgery.
- Optometrist Optometrists
- Anaesthetist Anesthesiologists
- Hospital doctor General Internal Medicine Physicians
- Surgeon Pediatric Surgeons
IRS
investigative, realistic, social
IRS: medicine with your hands first: teeth, bones, feet, eyes.
- Dentist Dentists, General
- Surgeon Orthopedic Surgeons, Except Pediatric
- Podiatrist Podiatrists
- Orthoptist Orthoptists
- Hospital doctor Cardiologists
SIC
social, investigative, conventional
SIC: helping through expertise: speech, health education, teaching, assessment.
- Speech and language therapist Speech-Language Pathologists
- Health promotion specialist Health Education Specialists
- Physician associate Physician Assistants
- Higher education lecturer Mathematical Science Teachers, Postsecondary
- Psychologist School Psychologists
SRI
social, realistic, investigative
SRI: helping with hands-on care: ambulances, teeth, backs, muscles.
- Paramedic Paramedics
- Emergency care assistant Emergency Medical Technicians
- Dental hygienist Dental Hygienists
- Chiropractor Chiropractors
- Massage therapist Massage Therapists
ECS
enterprising, conventional, social
ECS: managing and selling with people: a hotel, a team, a sales floor, a client list.
- Hotel manager Lodging Managers
- Recruitment consultant Human Resources Specialists
- Events manager Meeting, Convention, and Event Planners
- Estate agent Real Estate Sales Agents
- Retail manager First-Line Supervisors of Retail Sales Workers
ECR
enterprising, conventional, realistic
ECR: managing practical operations: sites, kitchens, buildings, buying.
- Restaurant manager Food Service Managers
- Retail buyer Wholesale and Retail Buyers, Except Farm Products
- Construction manager Construction Managers
- Facilities manager Facilities Managers
- Football referee Umpires, Referees, and Other Sports Officials
CEI
conventional, enterprising, investigative
CEI: finance and systems with judgment: audit, underwriting, claims, analysis.
- Auditor Accountants and Auditors
- IT project manager Computer and Information Systems Managers
- Insurance underwriter Insurance Underwriters
- Insurance claims handler Claims Adjusters, Examiners, and Investigators
- Investment analyst Financial and Investment Analysts
CES
conventional, enterprising, social
CES: organised work with customers: lending, accounts, front desks, arrangements.
- Mortgage adviser Loan Officers
- Credit controller Bill and Account Collectors
- Customer service assistant Customer Service Representatives
- Personal assistant Executive Secretaries and Executive Administrative Assistants
- Funeral director Morticians, Undertakers, and Funeral Arrangers
CRI
conventional, realistic, investigative
CRI: technical support and measurement: IT support, networks, surveying, energy.
- IT support technician Computer User Support Specialists
- Network manager Network and Computer Systems Administrators
- Land surveyor Surveyors
- Domestic energy assessor Energy Auditors
- Telecoms engineer Telecommunications Engineering Specialists
CER
conventional, enterprising, realistic
CER: procedures around goods and money: purchasing, borders, dispensing, freight.
- Purchasing manager Purchasing Agents, Except Wholesale, Retail, and Farm Products
- Pharmacy assistant Pharmacy Aides
- Border Force officer Customs and Border Protection Officers
- Store detective Retail Loss Prevention Specialists
- Import-export clerk Freight Forwarders
CIR
conventional, investigative, realistic
CIR: checking systems and places against a standard: compliance, mapping, quality.
- Environmental health officer Environmental Compliance Inspectors
- Geospatial technician Geographic Information Systems Technologists and Technicians
- Systems analyst Computer Systems Engineers/Architects
- Cartographer Cartographers and Photogrammetrists
- Quality control assistant Quality Control Analysts
CRE
conventional, realistic, enterprising
CRE: procedures that keep things moving: stock, airspace, flying, warehouses.
- Stock control assistant Stockers and Order Fillers
- Air traffic controller Air Traffic Controllers
- Helicopter pilot Commercial Pilots
- Drone pilot Commercial Pilots
- Warehouse worker Shipping, Receiving, and Inventory Clerks
CIE
conventional, investigative, enterprising
CIE: analysis for business and law: consulting, cases, risk, data.
- Management consultant Management Analysts
- Business analyst Management Analysts
- Paralegal Paralegals and Legal Assistants
- Actuary Actuaries
- Data analyst Business Intelligence Analysts
The six types
- Realistic (R). The doers: tools, machines, plants, animals and physical work.
- Investigative (I). The thinkers: research, analysis and working out how things work.
- Artistic (A). The creators: writing, design, music, performance and film.
- Social (S). The helpers: teaching, caring, guiding and treating.
- Enterprising (E). The persuaders: selling, managing, negotiating and starting things.
- Conventional (C). The organisers: records, procedures, numbers and getting details right.
Holland codes explained Where the six types come from and how a code is read.
Sources and licence
Interest codes from Holland's RIASEC model as used by the O*NET Interest Profiler. The twenty codes are those carried by the most occupations on O*NET OnLine's browse by interests pages, read on 3 November 2026: 923 occupations listed, of which 490 carry a three-letter code. Codes that tied for the last places were chosen by which had UK job profiles to show. The counts describe O*NET's occupation list, not how common each code is among people, so they are not shown. UK job titles are mapped by hand from O*NET occupations with that code and link to the National Careers Service (Department for Education) job profiles; every address was checked against the service's own sitemap on 3 November 2026.
This page includes information from the O*NET Career Exploration Tools by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA). Used under the CC BY-ND 4.0 license. O*NET® is a trademark of USDOL/ETA. O*NET Career Exploration Tools licence.