River AI tech stack
River AI builds mostly with C++, Python, Rust, SystemVerilog. Its stack also includes CUDA Toolkit, CUDA, PyTorch, vLLM. C++ is named in 8 of the 17 job postings River AI published in the last 12 months (47%). Counted by Alion from the job postings of River AI, updated Sep 28, 2026.
What programming languages does River AI use?
C++ is named in 47% of job postings at River AI, followed by Python (41%), Rust (24%), SystemVerilog (12%).
C++ 
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What frameworks and libraries does River AI use?
CUDA is named in 35% of job postings at River AI, followed by PyTorch (29%), Triton (24%), PyTorch C++ (24%).
PyTorch
5 29%
PyTorch C++
4 24%
JAX
3 18%
SGLang
2 12%
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What cloud and platforms does River AI use?
CUDA Toolkit is named in 35% of job postings at River AI, followed by vLLM (12%), Cadence Protium (6%), Synopsys HAPS (6%).
What developer tools does River AI use?
LLVM is named in 12% of job postings at River AI, followed by Synopsys Fusion Compiler (12%), Synopsys PrimeTime (12%), Ansys RedHawk (6%).
LLVM
2 12%
Synopsys Fusion Compiler
2 12%
Synopsys PrimeTime
2 12%
Ansys RedHawk
1 6%
Cadence Palladium
1 6%
GCC
1 6%
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What AI and ML technologies does River AI use?
LLM is named in 12% of job postings at River AI, followed by PEFT (12%), LoRA (6%).
Which engineering practices does River AI ask for?
Pre-training is named in 76% of job postings at River AI, followed by Post-training (29%), Reinforcement Learning (29%), Fine-tuning (24%).
Reinforcement Learning
5 29%
Fine-tuning
4 24%
Mixture of Experts
3 18%
CI/CD
2 12%
Function Calling
2 12%
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What does each River AI team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Data Science
3 postingsBackend
3 postingsHow does your stack fit River AI?
How is the River AI 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 River AI stack?
River AI scores 80 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: 3; legacy ones: 0.
How common is the River AI stack in its industry?
Share of the 250 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like River AI
Questions about the River AI tech stack
What programming languages does River AI use?
The languages named in River AI job postings are C++ (47%), Python (41%), Rust (24%), SystemVerilog (12%), Perl (6%), as a share of the 17 postings of the last 12 months.
Does River AI use CUDA?
Yes. CUDA is named in 6 of 17 job postings (35%) and required in 4 of them.
What cloud and platforms does River AI use?
The cloud and platforms named in River AI job postings are CUDA Toolkit (6), vLLM (2), Cadence Protium (1) (postings in brackets).
What skills do you need for a Data Science job at River AI?
Data Science postings at River AI most often require C++ (2), CUDA (2), CUDA Toolkit (2), LLVM (2), out of 3 postings in the last 12 months.
Is the River AI tech stack changing?
Yes. Mixture of Experts, SGLang, vLLM first appeared in River AI job postings in the last six months.
How modern is the River AI tech stack?
River AI scores 80 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: 3; legacy ones: 0.
How does Alion know the River AI tech stack?
Alion reads every job posting River AI publishes and tags the technologies each one names. The figures on this page count the 17 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, "River AI tech stack: 64 technologies from 17 job postings", as of Sep 28, 2026. https://alion.io/company/river-ai/technologies