I think there's a market for remote ops engineers for bootstrapped or single-founder companies. At conferences I keep hearing that such small companies strive, or at least are profitable, but their biggest business risk is a system going down and only one person knowing the ins and outs. At least for those where the founder is also the developer. They don't want to hire somebody full- or even part time either. I had a contract with one such developer to act as ops backup. My "work", and I put that in quotes because most was getting paid for experience, was to make sure I understand their systems, have logins on all, added to their monitoring alert system. Monthly fixed fee. Every couple of months I had to restart a server (everything was redundant already), discuss new systems (but not build them), review new documentation. I could imagine specializing in that with 5-10 clients can be an overall relaxing job.