Secondary school department heads manage and supervise their assigned departments to ensure that students are instructed and supported in a safe learning environment. They work closely with the secondary school principal to lead and assist school staff and to optimise communication between school management and teachers, parents, and other districts and schools. They facilitating meetings, develop and review curriculum programmes, observe staff when the principal delegates this work, and assume shared responsibility with the principal for financial resource management.

Secondary school head teachers are responsible for meeting curriculum standards, which facilitate academic development for the students. They manage staff, working closely with the different department heads, and evaluate the subject teachers in a timely manner in order to secure optimal class performance. They also ensure the school meets the national education requirements set by law and cooperate with local communities and governments. They may also work in vocational schools.

Secondary school teachers provide education to students, commonly children and young adults, in a secondary school setting. They are usually specialist subject teachers, who instruct in their own field of study. They prepare lesson plans and materials, monitor the students' progress, assist individually when necessary and evaluate their knowledge and performance through assignments, tests and examinations.

Secondary school teaching assistants provide various support services to secondary school teachers such as instructional and practical support. They help with the preparation of lesson materials needed in class and reinforce instructions with students in need of extra attention. They also perform basic clerical duties, monitor the students' learning progress and behaviour and supervise the students with and without the teacher present.

Second-hand goods specialised sellers sell second-hand goods such as books, clothes, appliances etc. in specialised shops.

Second-hand shop managers assume responsibility for activities and staff in specialised shops.

Second officers are responsible for monitoring and controlling various aircraft systems including fixed-wing and rotary wing. They work in close coordination with the two pilots during all phases of flight. They make pre-flight, inflight, and post flight inspections, adjustments, and minor repairs. They verify parameters such as passenger and cargo distribution, the amount of fuel, aircraft performance, and appropriate engine speed according to instructions of pilots.

Secretaries perform a variety of administrative tasks to help keep an organisation run smoothly. They answer telephone calls, draft and send e-mails, maintain diaries, arrange appointments, take messages, file documents, organise and service meetings, and manage databases.

Secretaries general head international governmental or nongovernmental organisations. They supervise staff, direct policy and strategy development, and function as main representative of the organisation.

Secretaries of state assist heads of government departments, such as ministers, and aid in the supervision of proceedings in the department. They assist in the direction of policies, operations, and department staff, and perform planning, resource allocation, and decision-making duties.

Sectional belt mould assemblers operate the machine that presses belts into a V-shape. They stretch the belt around the mould and start the machine.

Securities analysts perform research activities to gather and analyse financial, legal and economic information. They interpret data on the price, stability and future investment trends in a certain economic area and make recommendations and forecasts to business clients.

Securities brokers create the connection between the investors and the available investment opportunities. They purchase and sell securities on their clients' behalf, based on their expertise in the financial markets. They monitor the performance of their clients' securities, assessing their stability or speculative tendencies. Securities brokers calculate the securities' price and place orders.

Securities traders purchase and sell securities such as stocks, bonds and shares on their own account or on their employers account based on their expertise in the financial markets. They monitor the performance of the securities traded, assessing their stability or speculative tendancies. Securities brokers calculate the securities price and place orders. They record and file all securities transactions and take care of their financial documents.

Securities underwriters administer the distribution activities of new securities from a business company. They work in close connection with the issuing body of the securities in order to establish the price and buys and sells them to other investors. They receive underwriting fees from their issuing clients.

Security alarm investigators respond to burglar alarm signals and investigate disturbances identified by the alarm system on the clients' premises. They monitor security alarms and other surveillance devices and contact police in cases of trespassing.

Security alarm technicians install and maintain security alarm systems to protect against hazards such as fire and burglary. They install sensors and control systems and connect them to power and telecommunication lines if required. Security alarm technicians explain usage of the installed systems to the prospective users.

Security consultants provide security services to clients and individuals that help them preventing, planning and mitigating threats such as terrorism, espionage, theft, and violence to their organisation, including the buildings, operations, and employees. The services they provide depend on their clients' security needs and requirements and may include services such as threat analysis, security risk management, security programme development.

Security guards observe, detect irregularities and protect people, buildings and assets. They maintain security at all times by patrolling designated property areas, controlling access at entrances, watching alarm and video recording systems, asking suspicious individuals for identification and reporting infractions and law breaching activities.

Security guard supervisors monitor and oversee the activities of guards who protect properties from vandalism acts and theft. They assign areas to be patrolled by guards on a regular basis, transfer the individual caught trespassing to police custody and develop safety plans and drills for the buildings and employees under their supervision.

Security managers ensure security for people, such as customers and employees, and company’s assets either fixed, movable, machines, vehicles, and real state. They ensure safety and security by enforcing security policies, keeping track of different events, implementing security protocols, creating emergency response procedures, conducting security evaluations, and supervising security staff members.