Senior Engineer (C# .NET engineer)
6 months ago
United Kingdom

Do you have high energy, gravitas, vision and a belief that great software comes from exceptionally collaborative and motivated teams? Would you like to contribute and refactor our large SaaS solution, designing and delivering components to meet product requirements?

We have a fantastic opportunity for experienced C# .NET engineer to take accountability for establishing back-end architecture, development patterns, and best practices for a new existing C# code and new C# services. You will coach and mentor other engineers in cross functional teams where you'll be working alongside product owners, UX specialists, software engineers, and quality engineers. Your input will be crucial in shaping the future of a fast-growing SaaS company with a varied, interesting, and challenging platform.

BigChange has a focus on delivering quality and value to our customers that is reflected in all teams and departments in the business. You will be driving these values at the point where our customers interact with us the most. We must continuously improve the platform, our customer experience, the development process, and our own skills.

  • Develop and maintain back-end C# .NET Core code in a service-oriented architecture
  • Build reusable code and libraries for future use
  • Use and maintain modern build pipelines
  • Support groups of more junior engineers to achieve high quality outcomes
  • Provide comprehensive, automated test coverage of one’s own outputs
  • Ensure the technical feasibility of system designs
  • Participate in requirements analysis and systems design process
  • Contribute to component, workflow, and tool design
  • Collaborate with other team members to deliver working products
  • Provide high quality tests and code coverage
  • Occasional direct interaction with customers and suppliers
  • Peer review code from one’s team members and other C# .NET engineers
  • Ensure architecture, quality, and technology strategies are implemented.



  • Several years commercial experience working with C# and .NET Core
  • Experience with RDBMSs and NoSql technologies
  • SOLID design principles and common design patterns
  • Good object-oriented (OO) design skills, knowledge of patterns and architectural understanding
  • Experience with continuous integration and continuous delivery environments
  • Working knowledge for cloud platforms, AWS preferrable, Azure and GCP beneficial
  • Familiarity with Linux in a production environment.
  • Thorough understanding of testing frameworks and the practice of TDD
  • Proficiency in writing automated tests
  • Able to realise architectural designs into fully tested, performant, functional software
  • Willingness to learn, adopt and advance team best-practices, procedures and qualitative standards
  • Knowledge and experience of an Agile and Scrum working environment


  • .NET certification
  • SaaS, CRM, field service experience
  • Experience with ASP
  • Experience with JavaScript and React as a front-end technology
  • Familiar with Windows Server and IIS


  • 27 days annual leave, increasing by a day per completed years service up to a maximum of 30 days.
  • An additional 4 gifted BigRecharge days, allocated once a quarter where we all take a paid day off to focus on our wellbeing.
  • Gym or zwift membership contributions.
  • Remote and flexible working options
  • Income protection and death in service.
  • Health care cash plan.
  • Enhanced family friendly policies from day one of employment with a £200 gift from BigChange on the arrival of a new baby.
  • Company events.
  • Learning and development opportunities.

BigChange is officially an Outstanding Company to Work For, according to Best Companies 2021. On the independent Glassdoor website, we have a 4.6 out of 5 rating.

We give talent the chance to progress and be rewarded. And we see the whole person, not just the employee.

BigChange employs over 200+ BigChangers. Launched in 2013 and based in Leeds, UK, BigChange is a leading Field Service Management Software Provider.

In 2021, we secured £75million investment from Great Hill Partners to take our technology global.

BigChange is an equal opportunity employer. We celebrate differences and support diversity, thriving on it to improve the lives of our BigChangers, our product, and our community. We don’t discriminate based on age; physical, mental, or sensory disability: ethnicity; family status; sex; race; religion or belief; sexual orientation; gender identity and/or expression; marital, civil union or domestic partnership status; family, or parental status. If you would like to be part of a talented team where your voice is heard and your involvement matters, please join us.

We are also proud to be a Disability Confident employer: we understand that the application and traditional interview process does not work for everyone. If you need us to make any adjustments or changes to our existing process, please let us know in your application. Examples of adjustments may include providing application information in different formats, allowing additional time for any tests, providing a copy of interview questions prior to interview; or, conducting interviews remotely or in-person. This list is not exhaustive, and we are open to exploring any reasonable adjustments that may be necessary. If you have a disability and meet all the essential requirements for the role you have applied for, you will be guaranteed an interview.

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About the company
Do you have high energy, gravitas, vision and a belief that great software comes from exceptionally collaborative and motivated teams? Would you like to contribute and refactor our large SaaS solution, designing and delivering components to meet product requirements?
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