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Senior .Net Developer

Job Description

We are seeking a talented Senior .Net Developer to join our growing team. The businesses within MMDV deliver a unique proposition to our Clients, combining our domain expertise with the latest digital technology. For example, for more information about one such business please see www.smartinfrastructure.com.

You will work with the team on building a geospatial mapping system in C#, Javascript [ES2016] and PostgreSQL. You'll work mostly in the API and Data tiers and there is potential for front end work if desired.

This role offers many positive points:
  • modern technologies & architecture
  • large scale data flows and storage (1B+ data points / day)
  • automated testing and
  • interesting engineering problems

Our platform is currently used by our largest clients across the world, and you’ll be working with our team to scale it.

Candidate Specification

We are seeking a dynamic and talented Senior .Net Developer with solid commercial experience. Our ideal candidate will have a degree in computer science or software engineering and related experience in a similar role. It's also beneficial if you have prior work experience in web-based software development.

You will need to be experienced in C# & modern software development as well as have an understanding of scaling software systems. You'll commit to high quality code and be able to pay attention to detail.

It is beneficial if you have any of the following technical knowledge/experience:

  • Experience working in a team lead capacity
  • PostgreSQL or other SQL databases
  • NoSQL databases
  • ES6
  • Python
  • Cloud Technologies (Azure / AWS)
  • API design
  • Message Queues
  • CI/CD


The successful candidate must be a team player and effective communicator, confident in their capability, whilst able to recognise areas for development. They should have a natural ability in developing others, nurturing best practice and consciousness in everyone. They must also be able to think creatively and should always be seeking new and more efficient ways to improve the application and associated development processes.

You'll ideally, even if only in an unofficial capacity, have experience leading code reviews, taking the lead on projects, mentoring and acting as an escalation point to more junior members of the team.

Job Profile

Mott MacDonald is a forward-looking £1 billion employee-owned management, engineering and development consultancy serving the public and private sector around the world, with a strong commitment to digital innovation.

We are looking for a highly motivated Senior .Net Developer to work in our dynamic Digital Ventures Unit, to help build new technology products to address infrastructure’s biggest challenges globally and revolutionise how the industry delivers.

We manage billions of data points in C#, ES6, PostgreSQL, Python and other technologies. You will work mostly in the API and data tiers, primarily in C#. This is a devops team, so you will be expected to think about the deployment and supportability of your work. It's a small, agile and innovative team who make their own decisions and identify priorities collaboratively. From using big data to predict bathing water quality in Auckland, helping 500,000 residents know the best beaches to swim, to supporting major asset owners such as Heathrow and Anglian Water supercharge design and delivery efficiencies through automation. You will play a key part in developing new solutions for Governments and industry-leading organisations, helping to transform the way cities operate, driving improved environmental, economic and social outcomes – making the world a better truly better place.

Based in London and Cambridge, the team is focused on providing scalable, high-value solutions from our digital twin platform Moata.
We encourage you to find out more about Mott MacDonald and Mott MacDonald Digital Ventures (MMDV) online. We would prefer for candidates to be based within a commutable distance of our London Fleet Place office.

The application process
Read the information provided and if it sounds like the right role for you please apply online as soon as possible. Our online application process takes about 10 minutes and you'll need to upload your CV/resume. You have the option to upload a cover letter – to help explain why you're interested in applying for this role.

If you have any questions or need to send us your application in a different format, please contact us at careers@mottmac.com. We are an equal opportunity employer and value diversity at our company. We do not discriminate, and take positive steps to create an inclusive culture.

Equality, diversity and inclusion:
Equality, diversity, and inclusion (EDI) are at the heart of our organisation. We promote equal opportunities and have several initiatives to create an inclusive workplace culture; Our dedicated inclusive recruitment page provides more information on our efforts and recognitions.

If you have a disability and would prefer to apply in a different format or would like us to make reasonable adjustments 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 assist.

Flexible working:
At Mott MacDonald, we support our staff to create work-life balance which works for them and welcome candidates looking for career flexibility. We are open to discussing flexible working at interview stage.

We can offer:

  • Pension matched up to 7%
  • Competitive annual leave and the option to purchase additional annual leave
  • An annual professional institution subscription
  • Life insurance
  • Enhanced parental leave
  • Annual company performance bonus scheme – Subject to company performance
  • Flexible benefits scheme to suit you, including cycle to work & Interest free season ticket loans etc.

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