Job Purpose
The PLC and SCADA Technician is responsible for the development, design, and management of projects focused on the upgrade, modernization, and ageing management of reactor instrumentation and monitoring systems..
Key Performance Areas
Job Requirements
1. System design and development
1.1. Oversee Equipment Selection
- Evaluate project specifications to determine compatible PLCs, instruments, and interfaces.
- Compare vendor equipment based on performance, cost, and support.
- Coordinate with engineers and vendors to procure components within budget and specifications;
1.2 Perform Detailed System Design Including Layout, Wiring, and HMI
- Design system layouts for optimal space use and maintenance access, adhering to safety standards.
- Develop wiring schematics for safe and reliable power and signal distribution.
- Create user-friendly HMI interfaces for efficient system monitoring and operation.
1.3 Develop Software for PLC/SCADA and Fieldbus Systems
- Program PLCs to meet system requirements with an emphasis on performance and reliability.
- Configure SCADA interfaces for real-time process control and data monitoring.
- Establish Fieldbus protocols for seamless data exchange and equipment interoperability.
2. Documentation and testing
2.1 Generate Design Documentation
- Draft detailed schematics and blueprints defining equipment configurations and system integration.
- Compile technical specifications and guidelines for installation, operation, and maintenance.
- Create a comprehensive manual including all system components, protocols, and safety instructions.
2.2 Conduct Acceptance Testing
- Develop test protocols to validate system functionality against technical requirements.
- Simulate operating conditions to evaluate system performance and reliability under different scenarios.
- Document test results, analyze discrepancies, and recommend modifications for system optimization.
1. 2.3 Document the Manufacturing Process
- Record step-by-step procedures used in the assembly of electro-mechanical hardware.
- Outline quality assurance measures implemented during the manufacturing stage.
- Maintain a log of parts used, revisions made, and any deviations from the original design specifications.
3.. Implementation and commissioning
3.1 Assemble Electro-Mechanical Hardware
- Gather all necessary components, tools, and equipment required for the assembly process.
- Follow engineering diagrams and assembly instructions to construct the hardware components accurately.
- Perform initial testing on the assembled hardware to ensure proper assembly and basic functionality.
3.2 Implement Software
- Install and configure the PLC/SCADA software according to the system design specifications.
- Integrate custom-developed software modules and third-party applications as required.
- Test software functionality to confirm that system operations are as expected and resolve any issues
3.3 Commission Installed Systems with Complete Documentation
- Conduct thorough inspection and functional tests to ensure systems meet design and operational criteria.
- Prepare and execute a detailed commissioning plan that includes step-by-step processes for bringing the system online.
- Compile a complete set of documentation that covers system specifications, commissioning procedures, and final test results for handover to the client/user.
4. Network and data management
4.1 Manage and Maintain the SAFARI-I Industrial Network
- Monitor network performance, identifying and resolving any issues to ensure consistent uptime and reliability.
- Update network infrastructure, including both hardware and software components, to improve performance and scalability.
- Enforce network policies and procedures to maintain network integrity and compliance with industry regulations.
4.2 Perform Regular Maintenance
- Schedule and execute regular system checks and updates to hardware and software to prevent failures.
- Replace or repair worn-out or obsolete components as part of a proactive maintenance strategy.
- Document maintenance activities, including what was done, when, and by whom, for future reference and compliance purposes.
4.3 Secure Data and Uphold Industrial IT Standards
- Implement robust cybersecurity measures, including firewalls, anti-virus software, and intrusion detection systems to protect against unauthorized access.
- Back up data regularly and establish reliable recovery protocols to prevent data loss and ensure business continuity.
- Stay current with industrial IT standards and best practices, applying updates and modifications to maintain the highest level of system security and compliance.
5. Safety culture and performance
5.1 Participation in Organization Safety Culture and Safety Performance Activities
- Safety Training:
- Engage in regular safety trainings and contribute to the training of staff.
- BBS Observations:
- Perform monthly safety observations to identify and encourage safe workplace behaviors.
- Safety Initiatives:
- Actively participate in and promote safety culture through continuous improvement efforts and open communication on safety matters.
Key Knowledge and Skills
- Proficient in the design and programming of PLC/SCADA and Fieldbus systems.
- Knowledgeable in modern industrial network protocols and IT security best practices.
- Skilled in the design and assembly of electro-mechanical systems.
Technical and Behavioural Competencies
- Analytical thinking and attention to detail
- Focus and alertness
- Holistic / big picture thinking
- Creativity / innovation
- Judgement and decision-making
- Problem solving
- Mechanical/ physical reasoning
- Action orientation and decisiveness
- Assertiveness
- Excellence / quality orientation
Minimum Qualifications:
- National Diploma (NQF 6) in Electrical Engineering (Light current).
- Certification in PLC/SCADA systems is highly desirable.
Minimum Experience
- Minimum of 5years' experience in a similar role within an industrial environment.
- Proven experience with PLC programming and SCADA system design.
Closing date: 03 July 2026
CONTACT PERSON
Ms. Brenda Berries
Tel: 012 305 3099
Building: H Building
Room: 318
Please apply online https://necsa.mcidirecthire.com/External/CurrentOpportunities before the closing date
Important: Necsa Group is an equal opportunity employer committed to the principles of the Employment Equity Act. In filling this position, preference may be given to suitably qualified candidates from designated groups, in line with the organisation’s Employment Equity objectives.
By applying for this position, applicants acknowledge and consent to Necsa Group conducting the necessary pre-employment checks. These may include verification of educational qualifications, employment history, and, where relevant to the position, criminal and credit checks through registered credit bureaus and/or the South African Police Service, particularly for roles involving trust, honesty, or the handling of cash and finances. Necsa Group reserves the right to withdraw this advertisement at any time prior to the closing date. Furthermore, the organisation reserves the right not to make an appointment should a suitable candidate not be identified
