Junior Secondary Systems Engineer (HV Substations)

AECOM’s Enterprise Capabilities team is looking for a Junior Secondary Systems Engineer to join our team in Bucharest.

About Enterprise Capabilities

Fundamental to our Think and Act Globally strategy and digital adoption, Enterprise Capabilities (EC) is AECOM’s primary vehicle for workshare. Operating across geographic boundaries and time-zones, EC partners with regional and Global Business Line project teams to provide technical expertise, accelerate delivery and keep AECOM competitive in the industry.

With a team of over 3000 technical professionals located across nine countries and remote technical anchors, EC teams are trusted to deliver high-quality, specialist services that help to fill capability gaps, resourcing needs and technical constraints on projects of all scopes and sizes.

Start here. Grow here.

Job Description

We are seeking a motivated and oriented Substation Engineer with a minimum of 1 year of substation experience to join our team. This position focuses on the delivery of Secondary Circuits design for High Voltage (HV) substations, including CAD drafting, schematic development, and preparation of technical documentation.

The role involves close collaboration with primary engineers, protection & control engineers, project managers, and client representatives to ensure accurate and timely project delivery.

Key Responsibilities:

• Secondary Circuits Design & CAD Delivery
• Develop and update secondary schematics and wiring diagrams for HV substations.
• Produce CAD drawings for:
• Protection and control (P&C) panels
• Relay and control schematics
• AC/DC distribution diagrams
• Interlocking and control logic diagrams
• Terminal block layouts
• Cable schedules and interconnection diagrams
• Marshalling cabinet drawings
• Panel internal layouts
• Support preparation of substation secondary design packages.
• Ensure drawings reflect project-specific configurations (single line diagrams, bay configurations, protection philosophy).
• Coordination & Integration
• Coordinate with primary engineers to integrate secondary systems with primary equipment.
• Work with protection engineers to implement relay logic and schemes.
• Support interface coordination between protection panels, Control building, Yard equipment, SCADA / RTU systems.
• Ensure consistency between SLDs, schematics, cable lists, and panel drawings.
• Standards & Quality Control
• Ensure all drawings comply with applicable standards (IEC, ANSI, IEEE, utility standards).
• Follow company drafting standards and client requirements.
• Perform internal quality checks before submission.
• Support drawing revisions based on comments from senior engineers or clients.
• Documentation & Reporting
• Prepare drawing registers and maintain revision control.
• Support preparation of:
• Bill of materials (BOM) for secondary systems
• Cable schedules
• I/O lists
• Technical submittals
• Maintain organized documentation aligned with project milestones.
• Continuous Development
• Develop knowledge in HV substation secondary systems (protection schemes, interlocking, control philosophy).
• Support senior engineers in technical tasks to strengthen substation design competence.
  
  

Qualifications

Mandatory Qualifications:

• Education: Degree in Electrical Engineering or related field.
• Experience: Minimum 1 year of experience in HV/MV substations, with exposure to secondary circuits design.
• Basic understanding of protection and control systems in substations.
  
  

Nice to Have:

Technical Skills:

• Proficiency in AutoCAD (mandatory).
• Experience with tools such as Revit, ETAP, or similar.
• Understanding of:
• Protection schemes (distance, differential, overcurrent)
• AC/DC auxiliary systems
• SCADA integration principles
• Knowledge of IEC / ANSI / IEEE standards.
  
  

Soft Skills:

• Good communication and teamwork abilities.
• Advanced English (written and spoken).
• Strong attention to detail.
• Ability to manage deadlines and prioritize tasks.
• Proactive attitude and willingness to learn.
  
  

Additional Information

At AECOM, you will have freedom to grow in a world of opportunity

Our Freedom to Grow hybrid working philosophy is the cornerstone of our success as a business – supporting a culture of flexibility, trust and performance at AECOM.

About AECOM

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan.

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com.

What Makes AECOM a Great Place To Work

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community - where you have the freedom to grow in a world of opportunity.

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.