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Location
In office (Sofia)
Seniority
Senior
Visa
No sponsorship (stated in the posting)

Confirmed on the employer's own hiring board on Nov 15, 2026. First seen by Alion on Nov 12, 2026. Mott MacDonald scores A on the Alion truth index.

Overview
Company
Impact
Profile match
Mott MacDonald is a British engineering, management and development consultancy headquartered in Croydon, London, and owned by its employees. It works on transport, buildings, water, energy and environment projects for public and private clients, with large offices across the United Kingdom, India, Asia, the Middle East and the Americas. The firm was formed in 1989 by the merger of Mott, Hay and Anderson with Sir M MacDonald & Partners, and its board lists civil, building services, renewables and ICT engineering roles plus graduate and apprenticeship programmes.

Location/s: Sofia,Bulgaria

Relocation supported: Not supported, but internal applications are welcome

Recruiter contact: Abhijeet Barpanda

Hiring manager contact:Henry Smith

Mott MacDonald is a global engineering, management, and development consultancy with over 20,000 employees across more than 50 countries and 140+ offices.

We work across incredible global industries, delivering exciting work that is defining our future and making an important societal impact in the communities we serve. Our people power our performance - we succeed when they do. With countless opportunities to collaborate, learn, and grow, the possibilities for excellence are as varied as every individual.

Whether you want to grow as a subject matter expert or broaden your experience with roles across our international community, you’re surrounded by global specialists who want to combine their expertise and champion you to be your best. As a proudly employee-owned business, we benefit our clients, our communities, and each other, investing in creating the right space for everyone to feel empowered, included, and valued. Whatever your ambition, Mott MacDonald is where people come to be brilliant.

About the business unit

The Energy unit delivers services to clients globally across several sectors including hydropower, nuclear, waste, renewable generation and transmission & distribution networks. Together we provide integrated engineering and project management services across the project lifecycle - from concept and design to construction and operations, to decommissioning or repowering and life extension. Together with our clients, we’re helping to deliver the energy transition globally.

Overview of the role

The Secondary Systems Designer is responsible for preparing detailed electrical drawings, layouts, and documentation for medium voltage substations. This role involves working closely with engineers and multidisciplinary teams to deliver accurate, high-quality designs. We are looking for individuals looking to progress thier career in secondary systems design to join our growing team in Sofia.

Key Responsibilities and duties include:

  • Drafting and Design Preparation:
    • Prepare detailed electrical drawings for substation secondary systems, including protection, control, and communication systems
    • Develop layouts and details for cable trenches, duct banks, and equipment foundations
    • Create interface circuit diagrams, wiring diagrams, cable schedules, block diagrams, and room layouts
  • Technical Specifications:
    • Prepare and review technical specifications and documentation for substation secondary systems
    • Ensure all designs comply with relevant industry standards, regulations, and company policies
  • Collaboration with Engineers:
    • Work closely with primary design engineers, project managers, and other stakeholders to develop comprehensive secondary system designs
    • Incorporate design feedback and revisions from engineers to finalize drawings
    • Coordinate with multidisciplinary teams for consistency in designs and details
  • Documentation and Reporting:
    • Maintain and organize drawing sets, revisions, and documentation throughout the project lifecycle
    • Generate reports and maintain logs for design progress and drawing submissions
  • Quality and Compliance:
    • Conduct self-checks and peer reviews of drawings to ensure accuracy and completeness
    • Follow quality control procedures to maintain high drafting standards

Candidate specification

Essential:

  • Diploma or Associate Degree in Electrical Engineering, Drafting, or a related field
  • Proficiency in AutoCAD and other drafting software
  • Knowledge of medium voltage systems and substation design
  • Strong attention to detail and accuracy
  • Excellent communication and teamwork skills

UK Immigration

Mott MacDonald Ltd. are not currently offering sponsorship to candidates under the Skilled Worker visa route in the UK. This decision is as a consequence of the changes made to the Skilled Worker route by the UK Government in April 2024. We continue to welcome applications from candidates who are eligible for alternative immigration routes in the UK, that do not require sponsorship as a Skilled Worker now or in future.

Equality, diversity, and inclusion

We put equality, diversity, and inclusion at the heart of our business, seeking to promote fair employment procedures and practices to ensure equal opportunities for all. We encourage individual expression in our workplace and are committed to creating an inclusive environment where everyone feels they can contribute.

Accessibility

We want you to perform your best at every stage in the recruitment process. If you are disabled or need any support to enable you to apply or attend an interview, please contact us at [email protected] and we will talk to you about how we can support you.

Agile working

We are happy to talk openly about flexible working and how we can support your responsibilities beyond the workplace.

We offer some fantastic benefits including:

Health and wellbeing

  • Private medical insurance for all UK colleagues.
  • Health cash plan to support you with every day health costs and treatments.
  • Access to Peppy, providing free support from menopause experts for all UK colleagues.
  • A variety of wellbeing support is available through our comprehensive wellbeing program, including access for you and your family.
  • Ability to flex your salary to opt into a wide range of health benefits, many of which can be extended to your family too.

Financial wellbeing

  • We match employee pension contributions between 4.5% and 7%.
  • Life assurance equal up to 4 x your basic salary, with an option to increase the level of cover to 6 x your salary.
  • Our income protection scheme provides a financial benefit, as well as absence and return to work support due to long-term illness or injury.
  • Flexible benefits, including increased life assurance cover, critical illness insurance, payroll saving and will writing.
  • As an independently owned business we share the financial success of the business with all our colleagues in various ways including annual bonus schemes.

Lifestyle

  • A minimum of 33-35 days holiday each year, inclusive of public holidays and dependent on level, with the ability to buy or sell leave through our flexible benefits programme.
  • Holiday entitlement increased to a minimum of 35 days after 5 years’ service.
  • Variety of employee saving schemes and discounts from high-street retailers.

Enhanced family and carers leave

  • Enhanced family leave policies, including 26 weeks paid maternity and adoption leave, and two weeks paid paternity/partner leave.
  • Our shared parental leave matches maternity leave meaning we pay up to 24 weeks at full pay.
  • Up to five additional days leave are provided for those with significant caring responsibilities, two of which are paid.

Learning and development

  • Primary annual professional institution subscription.
  • A broad range of opportunities to enhance both technical and soft skills through mentoring, formal training, and self-development options.

Networks, communities, and social outcomes

  • Join a wide range of groups including our Advanced Employee Networks which support our LGBTQ+, gender, race and ethnicity, disability, and parents/carers communities.
  • Make a difference within our communities through our social outcomes.

Apply now, or for more information about our application process, click here.

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