I applied for the position via a recruitment agency. Stage 1: of the process was to complete and submit a Python Coding Test comprising three questions, q1) Several Regular Expression Tasks, q2) A file and data search problem, q3) Write a parser which will accept any date/time conforming to the ISO 8601 standard. Stage 2: This was a telephone Interview with the hiring manager lasting about an hour for me. General discussion around my CV, with questions clarifying specific details of experience. Stage 3: A face to face interview on site: This lasted about 3.5 hours starting with an interview with the hiring manager and another Test manager. This section covered my CV in a little more detail, some problem solving tasks and write a test plan for a vending machine. The second section was a technical interview with two engineers. This took the form of explaining my coding test, and answering some spot questions. I was then asked to interpret a BASH script and a Perl script, and finally covered some networking questions including explain the difference between IPv4 and IPv6. Thirdly a half hour section with HR followed by a facility tour.

Auto-emailed a code challenge. Code challenge is sufficiently complex that it can't be solved in the web interface provided by their third party assessor. The code challenge is written badly, and and the web "IDE" provided by the assessor is awful. However, the second of the two automated coding challenges is ridiculously trivial. Despite solving both exercises I received an automated rejection. No interaction with any member of staff.