How to become an Infrastructure Engineer
Infrastructure engineers build the floor everyone else's code stands on. You'll own the servers, networks, cloud accounts and deploy tooling that keep a product running, and you'll be the person paged when they don't. Almost nobody starts here, so the real question is which job you come from.
What the work actually is
Most of your week goes into code that describes machines rather than code that users see. You write Terraform to create networks and databases, you tweak Kubernetes manifests so a service gets the memory it needs, and you review pull requests from app teams who want a new queue by Friday. Then something breaks. A certificate expires, a disk fills on a logging node, a cloud region has a bad afternoon, and your plan for the day is gone.
The job sits between systems administration and software engineering. Older shops still call it ops, and some companies fold it into platform or site reliability teams. What stays the same is the mindset: you treat servers as cattle, you automate anything you've done twice, and you care more about the boring path working every time than about the clever fix.
Where infrastructure engineers come from
Up from systems administration or IT support
This is the route you'll see most often. You already patch Linux boxes, manage Active Directory or run the backup jobs. Start scripting what you do by hand in Bash or Python, move a small service into a cloud account, and write it up in Terraform or Ansible. Once your current job includes some automation, ask to be moved onto the team that owns it.
Sideways from software engineering
Backend developers who keep volunteering for the CI pipeline, the Dockerfiles and the on-call rotation often end up here. You already write code well, which is the harder half. Fill the gaps in networking, DNS and Linux internals, then ask to rotate onto the platform team for a quarter of work. Internal moves are far easier than cold applications for this route.
From a network or data center role
Network engineers and data center technicians know the physical layer that cloud people often skip. Learn one cloud provider properly, pick up Terraform, and learn how routing and load balancing look inside AWS or Azure. Your cabling and switching background becomes a real edge on hybrid setups where some gear still lives in a rack.
Straight in through a junior DevOps or cloud role
A computer science degree or a bootcamp can get you a junior cloud or DevOps title, which is the closest thing to an entry-level door. It's a narrow door. Hiring managers want to see something you built and ran, so a home lab or a public repo that stands up a working environment from scratch carries more weight than coursework.
Certificates worth the money, and ones that aren't
A cloud associate certificate from AWS, Azure or Google Cloud helps you get past a recruiter screen, especially if you're coming from IT support. The Certified Kubernetes Administrator exam is hands-on, so passing it actually tells an interviewer something. The HashiCorp Terraform Associate is cheap and quick and shows you've touched infrastructure as code.
Past that, stop collecting. A shelf of vendor badges with nothing running behind them reads as someone who studies instead of ships. Put the time into a project you can talk about for half an hour: what you built, what broke, and what you changed afterwards.
Words that show up in infrastructure postings
Applicant tracking systems and busy recruiters match on exact terms, so if you've done the work, use the same words the posting uses.
Making a resume line read like infrastructure work
Responsible for maintaining company servers and cloud infrastructure.
Moved 40 hand-built EC2 servers into Terraform modules, cut new environment setup from 2 days to 25 minutes, and lowered the monthly AWS bill by $6,800 by right-sizing idle instances.
The part people don't warn you about
On-call is the thing that makes or breaks this job for people. When you're on the rotation, your phone can go off at night because a database ran out of connections, and you'll be the one reading logs half awake while a Slack channel fills with questions. Good teams keep the pages rare and write a blameless postmortem after each one. Bad teams page you for noise and never fix the cause.
Ask about it in every interview. How often does the pager actually fire, who's on the rotation, and what happened after the last big outage. The answers tell you more about the job than the title does.
What Infrastructure Engineer postings ask for
Hiring the most
- Anduril Industries21
- Astreya15
- Bah14
- Anthropic12
- Accenture Federal Services9
Remote
14% of openings are fully remote.
Posted pay
$109,035 – $173,150
Typical range in the 30 of the newest 60 postings that list pay.
Questions people ask
Do I need a computer science degree to become an infrastructure engineer?
No. Plenty of people get here from IT support or systems administration without one. What you do need is proof that you can automate things and keep them running, like a Terraform repo, a home lab or a story about a migration you led.
What's the difference between an infrastructure engineer and a DevOps engineer?
They overlap heavily and many companies use the titles interchangeably. When there's a difference, infrastructure roles lean toward networks, cloud accounts and the systems underneath, while DevOps roles lean toward build pipelines and helping developers ship. Read the duties in the posting rather than trusting the title.
Which cloud should I learn first?
AWS shows up in the most postings, so it's the safe first pick. If the companies near you run on Microsoft, Azure makes more sense. The ideas carry over, so going deep on one beats skimming all three.
How much coding does the job involve?
More than people expect. You'll write Terraform, YAML and shell scripts daily, and a fair amount of Python or Go for glue tools. You won't build user features, but you should be comfortable reading code and reviewing it.
Ready to apply?
Tell HeroApply you want Infrastructure Engineer roles. It finds the openings and applies for you each day.