Lately I have been using the FUEL Methodology by Moonshot as my design process for doing design sprints. It is very similar to the double diamond technique popular in many other design shops. FUEL combines the outcomes of Design Thinking and Lean Innovation to accelerate the growth of customer-centric businesses.
I am also comfortable doing design through Lean UX with Agile. I can do Scrum and/or Kanban through tools like JIRA or Trello. If necessary, I can attend development planning and grooming sessions.