PSI tech stack
PSI builds mostly with Python, SQL, C++, TypeScript. Its stack also includes Kubernetes, PyTorch, vLLM, OpenTelemetry. Python is named in 5 of the 18 job postings PSI published in the last 12 months (28%). Counted by Alion from the job postings of PSI, updated Nov 11, 2026.
What programming languages does PSI use?
Python is named in 28% of job postings at PSI, followed by SQL (11%), C++ (6%), TypeScript (6%).
C 
What frameworks and libraries does PSI use?
PyTorch is named in 17% of job postings at PSI, followed by OpenTelemetry (11%), SGLang (11%), Triton (11%).
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What cloud and platforms does PSI use?
Kubernetes is named in 17% of job postings at PSI, followed by vLLM (11%), AWS (11%), GCP (11%).
What developer tools does PSI use?
SLURM is named in 11% of job postings at PSI, followed by Argo Workflows (6%), InfiniBand (6%), Prometheus (6%).
Which engineering practices does PSI ask for?
AI Agents is named in 94% of job postings at PSI, followed by Machine Learning (17%), Post-training (17%), HPC (17%).
AI Agents
17 94%
HPC
3 17%
RLHF
3 17%
Function Calling
2 11%
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What does each PSI team work with?
The technologies each team's postings require most often, with the number of postings that require them.
AI/ML
10 postingsHow does your stack fit PSI?
How is the PSI 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 PSI stack?
PSI scores 68 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 1; legacy ones: 0.
How common is the PSI stack in its industry?
Share of the 2,218 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like PSI
Questions about the PSI tech stack
What programming languages does PSI use?
The languages named in PSI job postings are Python (28%), SQL (11%), C++ (6%), TypeScript (6%), C (6%), as a share of the 18 postings of the last 12 months.
Does PSI use PyTorch?
Yes. PyTorch is named in 3 of 18 job postings (17%) and required in 2 of them.
What cloud and platforms does PSI use?
The cloud and platforms named in PSI job postings are Kubernetes (3), vLLM (2), AWS (2) (postings in brackets).
What skills do you need for a AI/ML job at PSI?
AI/ML postings at PSI most often require Kubernetes (3), OpenTelemetry (2), PyTorch (2), Python (2), out of 10 postings in the last 12 months.
Is the PSI tech stack changing?
Yes. KV Cache, Quantization, SGLang, Triton first appeared in PSI job postings in the last six months.
How modern is the PSI tech stack?
PSI scores 68 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 1; legacy ones: 0.
How does Alion know the PSI tech stack?
Alion reads every job posting PSI publishes and tags the technologies each one names. The figures on this page count the 18 postings of the last 12 months and were updated on Nov 11, 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, "PSI tech stack: 53 technologies from 18 job postings", as of Nov 11, 2026. https://alion.io/company/physical-superintelligence-seed-2026/technologies