Transport Planner – Consultant / Senior / Principal

Supporting Wales' growth through sustainable transport planning

SLR is a global leader in sustainability solutions, working with clients to help make sustainability happen, within a collaborative, people-first culture.

Due to continued growth, we are looking for an experienced transport planning professional to join our established Transport Planning team in Cardiff.

Applications are welcomed from candidates operating at Transport Planner, Senior Transport Planner or Principal Transport Planner level, appointment will be made at the level most appropriate to the successful candidate's skills, experience and ability to contribute to the growth of the team. Principal-level candidates should be able to demonstrate a proven track record of winning work and developing new client relationships.

You'll work on a diverse mix of development and infrastructure projects across both private and public sectors, supporting clients in residential, commercial, retail and energy. Our portfolio ranges from strategic new settlements through to smaller-scale landowner developments.

The role will focus on transport planning and appraisal work, alongside project delivery, client relationship management, project management and business development activities, depending on your experience and level.

The Role

• Delivery of Vision-Led Transport Assessments, Statements and Travel Plans
• Use of professional judgement to develop effective and practical transport solutions
• Client relationship management and support with fee proposals
• Planning and undertaking stakeholder and client engagement activities
• Supporting project financial performance alongside Project Directors
• Continual development of technical knowledge in line with policy and regulatory changes
• Mentoring and supporting junior team members
• For Principal-level candidates, leading business development activities, building new client relationships and securing new project opportunities

You'll collaborate with colleagues across Planning, Environmental and Engineering disciplines on impactful projects, with opportunities to work across the UK as part of a wider national team, and for European/International exposure.

Rewards & Benefits

SLR’s ‘One Team’ culture is at the heart of our business, providing a collaborative and supportive environment for professional development. Through a structured career framework, regular performance reviews, and full support toward chartership, professional qualifications and licenses, we offer outstanding opportunities for long‑term career progression.

Our flexible benefits & reward package includes:

• Competitive salary with discretionary bonus
• Company pension
• Private medical insurance
• Life, income, and travel insurance
• Salary sacrifice car lease and cycle‑to‑work schemes
• Volunteering and Community Giving

We believe sustainable careers need balance, that’s why we offer:

• Flexible, hybrid and agile working
• 25 days’ annual leave plus flexible public holidays
• Buy or sell leave options
• Core working hours
• Cross‑border remote working and sabbatical opportunities

Family life and wellbeing matter at SLR:

We provide enhanced maternity, paternity and adoption leave pay, a Workplace Nursery benefit, access to an Employee Assistance Programme, and specialist support for mental health, stress, and menopause—supporting our people both professionally and personally.

About You

You’ll bring:

• Experience delivering UK transport planning projects within a consultancy or similar environment
• A degree in Transport Planning, Civil Engineering, Geography or a related discipline
• Membership of a relevant professional institution (or working towards this)
• Strong technical reporting and problem-solving skills
• Knowledge of UK transport planning policy and appraisal techniques
• Experience using transport modelling software such as JUNCTIONS and LINSIG

Additionally, Principal-level applicants should be able to demonstrate:

• A proven track record of winning work and developing new client relationships

Culture & Inclusion

Inclusion is fundamental to who we are. We are committed to equal opportunities and foster a workplace where everyone can thrive, supported by active Culture & Inclusion Committees and Employee Networks. We welcome applications from candidates of all backgrounds and are a Disability Confident Committed employer. If you require any adjustments during the recruitment process, please let us know and we will be happy to support you.

If this Transport Planning opportunity feels like a great fit for your experience and ambitions, we’d love to hear from you.

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