Key Information
Job title: Senior Transport Modeller
Salary: Circa £45,000 Grade: Band 2 Contract type: TfL Reference: 5155
Team: Network Performance Directorate: Chief Operating Officer
Contract details: Full-time Location: Southwark, London SE1, with hybrid working
Hybrid working within this role enables a balance of 50 per cent of time split between the office and home over a 4-week period. Hybrid working arrangements can evolve subject to business requirements
Application closing date: 30 July 2026 @ 2359
All offers of employment are subject to satisfactory right‑to‑work checks. Candidates must be able to demonstrate their right to work in the UK. At the present time TfL is unable to offer visa sponsorship for this role.
Overview of project/role
At TfL’s Network Performance, we're focused on keeping London moving. Working across one of the world's most complex urban transport networks, we use data, insight and innovative thinking to improve journey time reliability, reduce congestion and support better outcomes for everyone who travels around the capital. From enhancing bus priority and optimising traffic signals to supporting major programmes such as Superloop, our teams work collaboratively to deliver practical, customer-focused improvements that make a real difference to millions of journeys every day.
As a Senior Transport Modeller, you'll bring detailed expertise in one or more areas of transport modelling, using your knowledge to help TfL meet its Network Management Duty and support the efficient operation of London's road network. Working at the heart of network performance, you'll contribute to a wide range of modelling activities, including the development of signal schemes, simulation, design, auditing, network impact assessments and public consultations, while helping to balance operational needs with the ambitions of the Mayor's Transport Strategy.
You'll also develop signal timings and modelling approaches that support the delivery of the Mayor's Transport Strategy, helping to shape how the network operates both now and in the future. This will involve contributing to network strategies and applying a range of traffic control techniques, including SCOOT, fixed-time operation, mode-specific priority within UTC, vehicle actuation (V.A.) and congestion management measures.
Key Accountabilities
- Provide expert analysis of transport schemes using advanced modelling techniques, delivering detailed network impact assessments that support Network Performance Delivery and TfL's Network Management Duty
- Develop and optimise signal strategies through multi-modal network modelling, ensuring the efficient operation of London's road network in line with the Mayor's Transport Strategy
- Deliver specialist advice on transport modelling matters to clients, consultants, sponsors, highway authorities, designers and internal stakeholders, covering areas such as highway traffic assignment, demand, deterministic, pedestrian, environmental and microsimulation modelling
- Design, audit and enhance schemes using a range of transport modelling software, including Aimsun, Junctions, Legion, LinSig, SATURN, TRANSYT, Vissim and Visum
- Strengthen modelling capability by supporting the development and application of strategic and tactical demand and traffic assignment methodologies, techniques and tools
- Lead and coordinate studies relating to traffic control strategies, transport modelling applications and the development of innovative modelling approaches
- Evaluate and influence modelling tools by assessing new software releases, recommending enhancements and working with suppliers to improve functionality and performance
- Promote best practice through the development and maintenance of quality assurance processes, procedures and guidance, including TfL's modelling standards and auditing frameworks
- Develop technical capability by designing and delivering training on transport modelling software, tools and techniques for colleagues and consultants
- Support signal control optimisation through the review, design, implementation and enhancement of UTC and local signal control strategies, including SCOOT, Fixed Time, Selective Vehicle Detection (SVD), System Activated Strategy Selection (SASS), Vehicle Actuation (VA) and MOVA
- Coach and mentor colleagues by providing technical guidance, supervision and support to less experienced team members and consultants during transport modelling activities and projects
Skills, Knowledge & Experience
Skills
- Very good numeracy with an ability to analyse engineering data (Essential)
- Good keyboard skills and proficiency with MS Office WORD and EXCEL (Essential)
- Good oral and written communication skills with the ability to impart knowledge to others (Essential)
- Willingness to work outside normal office hours including occasional weekend and night times (Desirable)
Knowledge
- Successful completion of training programme, graduate or HNC in relevant discipline or substantial relevant practical experience in traffic modelling, scheme design and traffic engineering (Essential)
- Considerable expertise in the practical application of TRANSYT, LinSig and other detailed signal design tools (Essential)
- Good working knowledge, experience and understanding of relevant modelling tools such as Aimsun, Junctions, Legion, LinSig, SATURN, TRANSYT, Vissim and Visum (Essential)
- Awareness and understanding of Urban Traffic Control and local control techniques including SCOOT, Bus Priority, VA and other advanced signal control techniques Highly desirable)
Experience
- Relevant practical experience or specialist training in traffic modelling, scheme design and traffic engineering (Essential)
- Experience and ability to write professional and concise reports of a technical nature to various audiences (Essential)
- Experience of delivering presentations and proficiency with MS PowerPoint (Essential)
- Experience of the integration of micro-simulation with SCOOT (online) (Desirable)
Application Process
- Please apply using your CV and a one-page cover letter
- Think carefully about the skills, knowledge and experience in the advert and cover this in your CV and cover letter
- PDF format preferred and do not include any photographs or images
Equality, diversity and inclusion
We are committed to equality, diversity and inclusion. We want to represent the city we serve, which will help us become a more innovative and efficient organisation. Our goal is to make our recruitment as inclusive as possible. We are a disability confident employer who guarantee an interview to any disabled candidate who meets all of the essential criteria. We also use anonymising software that removes identifying information from CVs and cover letters to make the process fair.
Benefits
In return for your commitment and expertise, you will enjoy excellent benefits and scope to grow. Rewards vary according to the level of role but mostly include the below:
- Final salary pension scheme
- Free travel for you on the TfL network
- Reimbursement of 75% of the cost of a standard class Ticket for National Rail travel from home
- 30 days annual leave plus public and bank holidays
- TfL is committed to work-life balance, operating a hybrid working approach where business and role requirements allow
- Private healthcare discounted scheme (optional)
- Tax-efficient cycle-to-work programme
- Retail, health, leisure and travel offers
- Discounted Eurostar travel
We will make every effort to give you as much notice as possible, however some interviews/assessments could be organised at short notice.
Vetting Process
At Transport for London, safety, trust and fairness sit at the heart of how we recruit. Our Vetting Charter (https://tfl.gov.uk/corporate/careers/our-vetting-process) explains the checks we carry out before you join us, helping ensure we create a safe, inclusive and reliable network for everyone who depends on our services. We simply ask that the information you provide is honest and accurate so we can progress your application smoothly. If something doesn’t match or can’t be verified, we may not be able to move forward with your application, but we’ll always treat you with transparency, respect, and clear communication throughout.