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Lead Full Stack Developer (Django/Flask, React/Angular)
Leeds (Remote), West Yorkshire, United Kingdom

Job Title

Lead Full Stack Developer (Django/Flask, React/Angular)

Job Description

Would you like to join a fast-growing cyber security software company, taking the lead UI development role for AppCheck, a unique technology centred around automated ethical hacking / penetration testing?

As our Lead Developer, you’ll take backend and frontend ownership of our UI development from requirement gathering through to hands on build of new features and functionality using React/Angular, JS, Python, HTML, CSS technically leading/mentoring others.

This is a brand-new role for AppCheck, so you’ll enjoy excellent autonomy and freedom, while building a small team over time.

This is a unique and exciting opportunity, so we highly recommend you get in touch, and we’re happy to answer any questions.

The Role:

  • As Lead Full Stack Developer you’ll take ownership and deliver key UI services for AppCheck. You’ll work closely with our Head of Development, Commercial Director, and Service Desk team to deliver feature requests, bug fixes and to enhance the service.
  • Key to the role is strong python web app dev knowledge and a working knowledge of GitLab, Docker and behavioral testing. Even though it’s not a must have, we’re especially interested if you have a keen interest in information security.
  • Day to day you’ll develop and design key user-facing features, enhance existing software and designs, ensure the technical feasibility of UI/UX designs, collaborate across the business and with customers, validate all user input from the team before submitting to back-end, as well as refactoring legacy systems to modern client-side frameworks.


  • Telecommuting is OK
  • No Agencies Please


  • Hands on full stack UI / web app development experience is key for this role
  • Have you technically led a small team to deliver projects, as well as remaining hands-on with development? That’s perfect for us. Although management experience is not required.
  • We’re looking for a Senior / Lead Developer who is highly organised and with the ability to plan / prioritise and communicate effectively at all levels within an organisation and with customers
  • Some of the key skills/tech you’d use regularly: Django / Flask (or similar), web markup (including HTML5, CSS3), client-side scripting and JavaScript frameworks, React or Angular
  • It would also be helpful if you understand asynchronous request handling, partial page updates, and AJAX, as well as an understanding of code versioning tools, such as Git / SVN

About the Company

  • AppCheck is a B2B cyber security software platform developed by industry leading ethical hackers and web application security experts.
  • Our technology gives companies the ability scan for and fix security vulnerabilities in their web applications and hosted infrastructure before malicious hackers can find and exploit them.
  • As well as offering a unique and powerful technology, AppCheck is an industry leader in web app security research and source of knowledge on preventing malicious hacks and costly security breaches.
  • Created in 2014 with 4 people, we’ve grown to 55 strong with an additional 30 hires planned over the next 12 months. We’ve grown organically as a result of exceptional commercial success.
  • We are 1 of 5 companies globally that do what we do, and the only company based in the UK!

Contact Info

Previous Senior Software Developer, Dig in Remote, U Next Lead DevOps Engineer (Python Automation), AppCheck in Leeds (Remote), West Yorkshire, United Kingdom