Principal Python Engineer

About Capco 

Capco is a fully independent, global management and technology consultancy. For nearly 20 years we have combined innovative thinking with deep industry knowledge to deliver business consulting, digital transformation and technology services to Finance and Energy markets. Our collaborative and efficient approach helps clients reduce costs and manage risk and regulatory change while increasing revenues. We are thinkers, innovators, and disruptors. We are small enough to care but large enough to matter. 

As a Principal Python Engineer at Capco, you will: 

Be part of Capco’s UK Engineering team, developing new and enhancing existing financial and data solutions for clients across the spectrum of Financial Services.  Projects range from greenfield cloud native apps through to established Tier1 bank applications. 

Work closely with businesses stakeholders and thought leaders to deliver innovative technology solutions that advance our clients businesses and solve technical problems they face daily, all while keeping the team and other key stakeholders up to speed on the progress of what’s being developed. 

Perform hands-on tasks during all phases of the software development lifecycle using modern technology and software engineering practices to create leading edge enterprise solutions in the Cloud. 

The Technology Stack 

Individual client tech stacks can vary but typically we’re using Python frameworks (Django, Flask, Bottle, FastApi) to build backend features and RESTful API’s, you’ll follow software engineering best practices by using object-oriented design and system design patterns like MVC or JWT for distributed authentication. 

We work across multiple different cloud architectures and messaging stacks, including event-driven systems & streaming platforms such as Kafka, and utilise Docker, Kubernetes and Jenkins on most projects. 

What you’ll bring to the role: 

  • Extensive commercial experience as a Python engineer using a variety of frameworks (e.g. Django, Flask, Bottle, FastAPI) 
  • You follow object-oriented design principles  
  • Experience of Git & a good understanding of CI/CD best practices 
  • Experience with testing both traditional and serverless cloud apps and BDD/TDD 
  • Good understanding of different databases (Relational and NoSQL) 
  • Strong organisational skills, able to juggle multiple tasks within the constraints of timelines and budgets 
  • You’re a strong communicator with an ability to explain complex solutions to non-technical audiences 


  • Experience building high-performance, highly scalable, cloud-based applications in Azure/AWS/GCP and containerized applications with Docker and Kubernetes 
  • Experience with Kafka (or similar) messaging middleware using queues, pub-sub channels, and streaming technologies 
  • Knowledge of enterprise integration patterns 

We offer: 

  • A work culture focused on innovation and building lasting value for our clients and employees 
  • Ongoing learning opportunities to help you acquire new skills or deepen existing expertise 
  • A flat, non-hierarchical structure that will enable you to work with senior partners and directly with clients 
  • A diverse, inclusive, meritocratic culture 
  • Enhanced and competitive family friendly benefits, including maternity / adoption / shared parental leave and paid leave for sickness, pregnancy loss, fertility treatment, menopause, and bereavement 

Our Culture 

Joining Capco means joining an organisation that is committed to an inclusive working environment where you’re encouraged to #BeYourselfAtWork.  We celebrate individuality and recognize that diversity and inclusion, in all forms, is critical to success.   

It’s important to us that we recruit and develop as diverse a range of talent as we can, and we believe that everyone brings something different to the table – so we’d love to know what makes you different.  

We understand that you may need us to make changes to our process to allow you the best possible platform to succeed, and we are happy to cater to any reasonable adjustments you may require. You will find the section to let us know of these at the bottom of your application form or you can mention it directly to your recruiter at any stage and they will be happy to help. 

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UK Demographics Questionnaire

Capco does not and shall not discriminate on the basis of race, color, religion (creed), gender, gender expression, age, national origin (ancestry), disability, marital status, sexual orientation, or military status, in any of its activities or operations. In order to track the effectiveness of our recruiting efforts, please consider participating in the optional questionnaire. 

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