Part 2
Senior DevSecOps Engineer
Build a company's entire delivery platform from the first commit, with security in it from that same commit, own it outright, and never carry a pager. Both halves of that sentence are deliberate.
- Barcelona
- on site
- Open
- 1 seat

What you own
- 01 Infrastructure-as-code, from zero
- 02 CI/CD and the release path
- 03 Security in the pipeline, and secrets — including for agents
- 04 Observability, backup and a tested restore

One method, many products
This is a senior role, and not one we can hire junior into — you are the first, for a while the only, and the platform everyone else builds on is the one you put in place.
Mainloop is an engineering company in Barcelona . We own what we build and we answer to ourselves. You get the interesting part of a new company, with a real customer and real products from day one.
What we build is the software that automates professional‑services work — across roughly fifteen countries, for businesses drowning in process. We build those products and we run them .



That second half is why this role exists, and it is not a formality: a team that owns how its software is built should own how it ships.
You are the person who ends that. You are our first DevSecOps engineer, and for a while our only one.
What the job actually is
You are not inheriting a platform. You are writing one.
There is no infrastructure-as-code in our estate today — not a line. Your first job is to make that permanently untrue: every environment we run reproducible from a committed repo, from your first week, before the habit sets.
In Your First Few Months You Will
- Build the platform from code. Hosts, networking, ingress, access, environments — committed, parameterised, reviewable. It is the cheapest moment this will ever be done, and you get to do it properly instead of retrofitting it.
- Make deployment self‑serve. Today, shipping an existing app is a git push; standing up a new one needs admin rights and two undocumented fo

📌 Senior DevSecOps Engineer (Barcelona)
🏢 Mainloop AI
📍 Barcelona