TIER IV tech stack
TIER IV builds mostly with C++, Python, C#, MATLAB. Its stack also includes ROS2, Autoware, AWS, GitHub. ROS2 is named in 16 of the 31 job postings TIER IV published in the last 12 months (52%). Counted by Alion from the job postings of TIER IV, updated Sep 28, 2026.
What programming languages does TIER IV use?
C++ is named in 10% of job postings at TIER IV, followed by Python (6%), C# (6%), MATLAB (3%).
C++ 
C# 
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What frameworks and libraries does TIER IV use?
ROS2 is named in 52% of job postings at TIER IV, followed by Autoware (48%), UVM (3%), CUDA (3%).
What databases does TIER IV use?
Amazon Redshift is named in 3% of job postings at TIER IV, followed by DynamoDB (3%), Apache Iceberg (3%), Delta Lake (3%).
What cloud and platforms does TIER IV use?
AWS is named in 26% of job postings at TIER IV, followed by GitHub (13%), Linux (13%), Kubernetes (13%).
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What developer tools does TIER IV use?
Docker is named in 13% of job postings at TIER IV, followed by MQTT (6%), WebRTC (6%), Claude Code (3%).
Docker
4 13%
MQTT
2 6%
WebRTC
2 6%
Claude Code
1 3%
SLURM
1 3%
JMeter
1 3%
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What AI and ML technologies does TIER IV use?
LLM is named in 6% of job postings at TIER IV, followed by Gemini (3%).
Which engineering practices does TIER IV ask for?
CI/CD is named in 26% of job postings at TIER IV, followed by Machine Learning (6%), SLI/SLO/SLA (6%), AI Agents (3%).
CI/CD
8 26%
SLI/SLO/SLA
2 6%
AI Agents
1 3%
HPC
1 3%
Diffusion Models
1 3%
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What does each TIER IV team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
7 postingsHow does your stack fit TIER IV?
How much does TIER IV pay by technology?
Median stated pay of the postings that name each technology, against the median of all TIER IV postings with stated pay: $89k across 31 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| ROS2 | 16 | $89k | 0% |
| Autoware | 15 | $89k | 0% |
| AWS | 8 | $105k | +18% |
How is the TIER IV stack changing?
Read from the dates of the postings themselves: a technology is new when the first posting that names it appeared in the last six months, rising or falling when its share of postings moved between the last two quarters.
How modern is the TIER IV stack?
TIER IV scores 79 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 2; legacy ones: 0.
How common is the TIER IV stack in its industry?
Share of the 134 companies in the same industries, whose stack Alion knows, that use each technology.
What sets TIER IV apart
Companies with a stack like TIER IV
Questions about the TIER IV tech stack
What programming languages does TIER IV use?
The languages named in TIER IV job postings are C++ (10%), Python (6%), C# (6%), MATLAB (3%), Node JS (3%), as a share of the 31 postings of the last 12 months.
Does TIER IV use Autoware?
Yes. Autoware is named in 15 of 31 job postings (48%) and required in 14 of them.
What cloud and platforms does TIER IV use?
The cloud and platforms named in TIER IV job postings are AWS (8), GitHub (4), Linux (4) (postings in brackets).
What skills do you need for a Backend job at TIER IV?
Backend postings at TIER IV most often require Autoware (4), AWS (3), .NET (2), MQTT (2), out of 7 postings in the last 12 months.
Is the TIER IV tech stack changing?
Yes. GitHub Actions, MQTT first appeared in TIER IV job postings in the last six months.
How modern is the TIER IV tech stack?
TIER IV scores 79 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 2; legacy ones: 0.
How does Alion know the TIER IV tech stack?
Alion reads every job posting TIER IV publishes and tags the technologies each one names. The figures on this page count the 31 postings of the last 12 months and were updated on Sep 28, 2026.
Method and citation
Alion reads every job posting the company publishes and tags the technologies each one names. Shares count the postings of the last 12 months, open and closed; the company's own products are counted apart. How we count
Alion, "TIER IV tech stack: 64 technologies from 31 job postings", as of Sep 28, 2026. https://alion.io/company/tier-iv/technologies