Interviews/Infrastructure & Reliability/Network Engineer

Hire Network Engineers
who actually see the packets, not the slides

With EasyEnv we build a fit test for the role. Use it to cut the noise at the top of the funnel, or to go deep on the candidates who matter.

You can even evaluate how this person works with AI. So you hire the engineer who can ship, not the one who looks good in a slide.

Linux networkingtcpdumpBGPWireGuard · NetBirdLive or take-home

Request a Demo Create a Free Account

Real Linux VM

Not a sandbox

systemd, kernel, full toolchain

Browser-based

Zero install for candidates

One link and they are in

Auto-graded

Pass / fail checks per challenge

Plus the full session replay

A great network engineer reads packets the way other engineers read stack traces. They feel where the drop is before they prove it. EasyEnv drops the candidate into a workspace with two hosts on a private network, one of which is misbehaving in a way that only tcpdump and iproute2 can explain.

Inside a live interview

What you see when they work.

Two hosts on a private network, every keystroke recorded.

billing-api

AMS

Billing-api

src

billing.py

auth.py

models.py

tests

test_billing.pyM

test_auth.py

pyproject.toml

README.md

Pybilling.py

from decimal import Decimal

def calculate_total(items: list[dict]) -> Decimal:

# Sum line totals using Decimal for currency precision

total = Decimal("0")

for item in items:

total += Decimal(str(item["price"])) * item["qty"]

return total

candidate@host-a:~

alice@dev:~/billing-api$

● mainPython 3.12

Claude · ready

Claude

You

Refactor calculate_total to use Decimal for currency math, and add a test.

Claude

Ask Claude...

Mike

Sam

How it works

Three steps. Zero infra to maintain.

Pick the fit test

Use a ready-made challenge or ask us to build one for your stack. Live, take-home, or both.

Send one link

The candidate clicks. A full Linux workspace boots in their browser. No installs, no VPN, no zoom-share.

Review at 2x

Replay the session, read the auto-graded checks, and decide. Most reviews take under five minutes.

The problem

Why hiring a Network Engineer is hard.

Networking depth is uneven. Someone fluent in cloud VPCs may freeze in iptables, and vice versa.

Diagnostics depend on tooling muscle memory. ip, ss, tcpdump, mtr, the candidate either reaches for them or does not.

Cloud networking hides things. The interview has to surface them.

Security and connectivity tension is constant. You need a candidate who can balance them, not just pick one.

The fit test

What we measure for a Network Engineer.

Every area runs inside a real production-like workspace. The candidate works in a browser, the session records itself.

Packet-level debugging

A flow that succeeds on host A and times out on host B. tcpdump is one terminal away.

Routing and NAT

A misconfigured iproute2 rule and a NAT layer hiding the source IP. They reason about both.

Cloud VPC design

Live conversation around subnet sizing, transit gateways, peering, with a real VPC as backdrop.

Firewall reasoning

Real iptables / nftables / cloud security groups. They explain why a rule fires.

Tunnels and mesh

A WireGuard or NetBird tunnel that should be up. They diagnose without rebuilding from scratch.

AI collaboration

Allow AI for unfamiliar syntax and grade whether they verify the suggested ip rule before applying it.

The stack we put in front of them.

Real tools, pre-installed, accessible from the workspace terminal.

Linux networkingtcpdumpiproute2iptablesnftablesmtrtraceroutenetcatWireGuardNetBirdAWS VPCGCP VPCBGPHAProxyNginxCoreDNSeBPF

Sample challenges

What a Network Engineer interview looks like.

Pick from our library or ask us to build a challenge for your stack. Each one is a real workspace, not a snippet.

Challenge 01

Replies that never arrive

Scenario

Host A reaches host B, host B sees the request, but A never gets the response. tcpdump and route tables are live.

What you learn

Whether they suspect asymmetric routing before they reach for the firewall.

In the workspace

$ ls challenges/

workspace, runbook.md, README.md

candidate has:

· a real Linux box in the browser
· kubectl, docker, terraform, jq, yq
· cluster, repo and cloud creds pre-wired
· auto-checks running in the background

interviewer sees:

· every keystroke + every command
· terminal + screen recording
· auto-graded pass/fail per check

AI in the loop

Score the engineer, and how they work with AI.

Networking is one of the few areas where AI hallucinations are easy to spot, if the candidate runs the commands instead of trusting them. EasyEnv replays the prompt history so you see whether they cross-checked the suggested ip rule against the live route table.

Allow or block AI per question, not per interview

Full prompt and response history replayed in the review

Score "verifies AI output" as a separate signal

Ready to hire a Network Engineer who ships?

Set up your first interview in under an hour. We will help you build a fit test for this role on your stack.

Request a Demo Create a Free Account

Role FAQ

Hiring a Network Engineer, answered.

Yes. We can pre-provision a sandbox VPC with the exact topology you want the candidate to debug.

Yes. The workspace has a real kernel and supports eBPF programs, tc, bpftool and friends.

No. The workspace runs in their browser. Terminal, editor, ports and dashboards are all served from the EasyEnv workspace, so candidate setup is zero.

Each challenge has automated checks (did the service come back, did the test pass, did the right log message appear) plus a recording your team can replay. Most reviews take under five minutes.

Yes. AI access is a per-interview setting. Block it for fundamentals, then allow it later in the loop to assess AI collaboration separately.

Interviews/Infrastructure & Reliability/Network Engineer

Hire Network Engineers
who actually see the packets, not the slides

With EasyEnv we build a fit test for the role. Use it to cut the noise at the top of the funnel, or to go deep on the candidates who matter.

You can even evaluate how this person works with AI. So you hire the engineer who can ship, not the one who looks good in a slide.

Linux networkingtcpdumpBGPWireGuard · NetBirdLive or take-home

Request a Demo Create a Free Account

Real Linux VM

Not a sandbox

systemd, kernel, full toolchain

Browser-based

Zero install for candidates

One link and they are in

Auto-graded

Pass / fail checks per challenge

Plus the full session replay

Inside a live interview

What you see when they work.

Two hosts on a private network, every keystroke recorded.

billing-api

AMS

Billing-api

src

billing.py

auth.py

models.py

tests

test_billing.pyM

test_auth.py

pyproject.toml

README.md

Pybilling.py

from decimal import Decimal

def calculate_total(items: list[dict]) -> Decimal:

# Sum line totals using Decimal for currency precision

total = Decimal("0")

for item in items:

total += Decimal(str(item["price"])) * item["qty"]

return total

candidate@host-a:~

alice@dev:~/billing-api$

● mainPython 3.12

Claude · ready

Claude

You

Refactor calculate_total to use Decimal for currency math, and add a test.

Claude

Ask Claude...

Mike

Sam

How it works

Three steps. Zero infra to maintain.

Pick the fit test

Use a ready-made challenge or ask us to build one for your stack. Live, take-home, or both.

Send one link

The candidate clicks. A full Linux workspace boots in their browser. No installs, no VPN, no zoom-share.

Review at 2x

Replay the session, read the auto-graded checks, and decide. Most reviews take under five minutes.

The problem

Why hiring a Network Engineer is hard.

Networking depth is uneven. Someone fluent in cloud VPCs may freeze in iptables, and vice versa.

Diagnostics depend on tooling muscle memory. ip, ss, tcpdump, mtr, the candidate either reaches for them or does not.

Cloud networking hides things. The interview has to surface them.

Security and connectivity tension is constant. You need a candidate who can balance them, not just pick one.

The fit test

What we measure for a Network Engineer.

Every area runs inside a real production-like workspace. The candidate works in a browser, the session records itself.

Packet-level debugging

A flow that succeeds on host A and times out on host B. tcpdump is one terminal away.

Routing and NAT

A misconfigured iproute2 rule and a NAT layer hiding the source IP. They reason about both.

Cloud VPC design

Live conversation around subnet sizing, transit gateways, peering, with a real VPC as backdrop.

Firewall reasoning

Real iptables / nftables / cloud security groups. They explain why a rule fires.

Tunnels and mesh

A WireGuard or NetBird tunnel that should be up. They diagnose without rebuilding from scratch.

AI collaboration

Allow AI for unfamiliar syntax and grade whether they verify the suggested ip rule before applying it.

The stack we put in front of them.

Real tools, pre-installed, accessible from the workspace terminal.

Linux networkingtcpdumpiproute2iptablesnftablesmtrtraceroutenetcatWireGuardNetBirdAWS VPCGCP VPCBGPHAProxyNginxCoreDNSeBPF

Sample challenges

What a Network Engineer interview looks like.

Pick from our library or ask us to build a challenge for your stack. Each one is a real workspace, not a snippet.

Challenge 01

Replies that never arrive

Scenario

Host A reaches host B, host B sees the request, but A never gets the response. tcpdump and route tables are live.

What you learn

Whether they suspect asymmetric routing before they reach for the firewall.

In the workspace

$ ls challenges/

workspace, runbook.md, README.md

candidate has:

· a real Linux box in the browser
· kubectl, docker, terraform, jq, yq
· cluster, repo and cloud creds pre-wired
· auto-checks running in the background

interviewer sees:

· every keystroke + every command
· terminal + screen recording
· auto-graded pass/fail per check

AI in the loop

Score the engineer, and how they work with AI.

Allow or block AI per question, not per interview

Full prompt and response history replayed in the review

Score "verifies AI output" as a separate signal

Ready to hire a Network Engineer who ships?

Set up your first interview in under an hour. We will help you build a fit test for this role on your stack.

Request a Demo Create a Free Account

Role FAQ

Hiring a Network Engineer, answered.

Yes. We can pre-provision a sandbox VPC with the exact topology you want the candidate to debug.

Yes. The workspace has a real kernel and supports eBPF programs, tc, bpftool and friends.

No. The workspace runs in their browser. Terminal, editor, ports and dashboards are all served from the EasyEnv workspace, so candidate setup is zero.

Each challenge has automated checks (did the service come back, did the test pass, did the right log message appear) plus a recording your team can replay. Most reviews take under five minutes.

Yes. AI access is a per-interview setting. Block it for fundamentals, then allow it later in the loop to assess AI collaboration separately.

How to Hire a Network Engineer | Packet-Level Interviews | EasyEnv | EasyEnv

Hire Network Engineerswho actually see the packets, not the slides

What you see when they work.

Three steps. Zero infra to maintain.

Pick the fit test

Send one link

Review at 2x

Why hiring a Network Engineer is hard.

What we measure for a Network Engineer.

Packet-level debugging

Routing and NAT

Cloud VPC design

Firewall reasoning

Tunnels and mesh

AI collaboration

The stack we put in front of them.

What a Network Engineer interview looks like.

Replies that never arrive

Score the engineer, and how they work with AI.

Ready to hire a Network Engineer who ships?

Hiring a Network Engineer, answered.

Hire Network Engineerswho actually see the packets, not the slides

What you see when they work.

Three steps. Zero infra to maintain.

Pick the fit test

Send one link

Review at 2x

Why hiring a Network Engineer is hard.

What we measure for a Network Engineer.

Packet-level debugging

Routing and NAT

Cloud VPC design

Firewall reasoning

Tunnels and mesh

AI collaboration

The stack we put in front of them.

What a Network Engineer interview looks like.

Replies that never arrive

Score the engineer, and how they work with AI.

Ready to hire a Network Engineer who ships?

Hiring a Network Engineer, answered.

Hire Network Engineers
who actually see the packets, not the slides

Hire Network Engineers
who actually see the packets, not the slides