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Technical Lead - Principal Software Engineer

Job details
Posting date: 09 January 2026
Salary: Not specified
Additional salary information: £90000-120000 per annum
Hours: Full time
Closing date: 06 February 2026
Location: London, EC4M 7RB
Company: Mott MacDonald
Job type: Permanent
Job reference: 13035-43890666

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Summary

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.
Location/s: Cambridge or London, UKRecruiter contact: Nikki George

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.


Overview of the role
Mott MacDonald is a uniquely diverse employee-owned, engineering and development consultancy serving the public and private sector around the world. We are looking for a highly motivated individual to become a Software Engineering Technical team lead within our Project Delivery Model team. The home office location is London, where you will join and become a key part of our global team and business.

As the Technical Lead, you will cultivate, mentor, and propel an innovative and dynamic team tasked with developing and maintaining our future estate of cutting-edge digital applications across the group. Our goal is to revolutionize how infrastructure owners and operators interact with infrastructure at both city and national scales.

Key responsibilities and duties include:
- Collaborate closely with stakeholders, cross-functional group managers, and global engineering leads to ensure consistency and excellence in application development and governance
- Mentor and foster the growth of a forward-thinking team dedicated to developing next-generation digital applications
- Oversee the planning, design, development, execution, and maintenance of software applications that seamlessly scale across our organization and client base
- Operate at all levels, providing strategic insights while delving into the intricate details of application development as required
- A commitment to high quality applications and be able to pay attention to detail
- Lead the estimation process, evaluate risks, and mentor team members to enhance their skills and adherence to companywide software development best practices

Opportunities offered:
- Lead complex a team utilizing a modern technology stack and architecture
- Join a global, diverse, and high-performing team committed to enhancing societal outcomes through improved physical infrastructure performance
- Engage with large-scale, real-time data flows, processing over 1 billion points per day
- Benefit from automated testing methodologies
- Tackle engineering challenges and drive innovative solutions


Candidate specification
Essential:
- Degree in computer science or software engineering, with at least 8 years of relevant work experience, including experience in technical leadership and people management
- Demonstrated ability to work effectively within a collaborative, cross-functional team across multiple countries (United Kingdom, India, New Zealand, and United States)
- Strong communication, technical, and managerial skills
- Familiarity with modern cloud-first application patterns (MS Azure)
- Proficiency in one of the following languages Python, JavaScript (ES2016), C#, PostgreSQL
- Familiarity with containerized workloads and Kubernetes environment
- Familiarity in MS PowerPlatform would be beneficial
- Understanding of the importance of communication, simplicity, and reliability in decision-making processes

This role presents an exciting opportunity for the successful candidate to make a lasting impact on our organization and the broader community through groundbreaking technological advancements. Join us in shaping the future of infrastructure interaction and development.



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.

Agile working
At Mott MacDonald, we believe it makes business sense for you and your manager to choose how you can work most effectively to meet your client, team, and personal commitments. We offer a hybrid working policy that embraces your well-being, flexibility, and trust.

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 reasonable.adjustments@mottmac.com and we will talk to you about how we can support you.


We offer some fantastic benefits including:

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.


Employee Ownership
- Our employee ownership model means no external investors, just us, creating a culture of shared success.
- Our employees have a stake and a voice in our business, giving them a direct connection to our success through our personal and group performance bonuses.
- As your career grows, so does your stake, recognising your long-term impact and contribution.
- Your voice matters, with the opportunity to connect directly with senior leadership through formal channels to help shape our future.
- For our senior roles you will have a direct pathway towards ownership from day one.


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.


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.

Proud member of the Disability Confident employer scheme

Disability Confident
A Disability Confident employer will generally offer an interview to any applicant that declares they have a disability and meets the minimum criteria for the job as defined by the employer. It is important to note that in certain recruitment situations such as high-volume, seasonal and high-peak times, the employer may wish to limit the overall numbers of interviews offered to both disabled people and non-disabled people. For more details please go to Disability Confident.

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