Sf Tensor
sf-tensor.com
Actively hiring
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Overview
Train the models only you can build. SF Tensor provides one optimized, cross-vendor training stack for enterprise post-training and frontier pre-training.
News
Reverse-Engineering the B200's Tensor Core, One Bit at a Time
A bit-exact software model of NVIDIA Blackwell's tcgen05.mma instruction, reverse-engineered from B200 measurements across 46 validated datapaths.
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Report
Technologies
Tech DNA
C++
Sass
Rust
PyTorch
Triton
CUDA
AWS
LLM
AI/ML
C++
AWS Trainium
TPU
Post-training
MLIR
Pre-training
Function Calling
JAX
PyTorch
Tool Use
Apache TVM
Triton
XLA
CUDA
CUDA Toolkit
InfiniBand
NVLink
ROCm
LLVM
DPO
GRPO
Knowledge Distillation
LLM Evaluation
Model Distillation
PPO
Quantization
SFT
Speculative Decoding
Synthetic Data
AI Agents
Embeddings
LLM
Reinforcement Learning
Reward Modeling
RLHF
Perplexity
Ray
Weights & Biases
NCCL
AWS
Kubernetes
SLURM
HPC
KVM
QEMU
Frontend
Sass
JavaScript
Figma
Next.js
React.js
Other
Rust
C
Notion
Reinforcement Learning
MPI
Metal
Slack
Stack modernity
64/100
How modern this stack is, based on technology relevance, AI adoption and the share of legacy tools.
In-demand technologies
TPU
6 jobs
Required
$315k
+37% vs market
AWS Trainium
6 jobs
Required
$315k
-2% vs market
Post-training
5 jobs
Required
$315k
+6% vs market
Pre-training
3 jobs
Required
$315k
Median
MLIR
3 jobs
Required
$315k
+29% vs market
C++
3 jobs
Required
$315k
+59% vs market
JAX
2 jobs
Required
$315k
+24% vs market
Function Calling
2 jobs
Required
$315k
+42% vs market
Salary medians are calculated from this company's open jobs and compared with the market.
Stack changes
QEMU
Sep 2026
NCCL
Sep 2026
KVM
Sep 2026
Rust
Sep 2026
Notion
Sep 2026
C
Sep 2026
Sass
Sep 2026
ROCm
Sep 2026
Technologies recently added to or removed from this company's stack - a signal of tech migrations and new initiatives.
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xAI
Salary insights
Compensation ranges based on this company's open jobs
Median
$315k
Typical range
$275k – $315k
Open positions
6
6
Jobs
Staff
100%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Staff | 6 | $315k | $275k – $315k |
Highest paying role
Member of Technical Staff, Sandbox Infrastructure
$315k
Normalized to USD per year
Growth
Hiring Momentum
38/100
Slowing
Open positions
6
0 opened / 0 closed in 30 days
ATS activity
Every ~1 hours
09/06/2026
Hiring Dynamics
0%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
AI/ML
100% ▲
Actively hiring for AI/ML (+6 in 30 days)
Activity Timeline
Added QEMU to stack
Sep 2026
Added NCCL to stack
Sep 2026
Added KVM to stack
Sep 2026
Added Rust to stack
Sep 2026
Added Notion to stack
Sep 2026
Added C to stack
Sep 2026
Added Sass to stack
Sep 2026
Added ROCm to stack
Sep 2026
Added NVLink to stack
Sep 2026
Added MPI to stack
Sep 2026
Added Metal to stack
Sep 2026
Added LLVM to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
San Francisco
San Francisco
United States
Engineering / R&D
6 open roles 6 posted in 90 days 100% engineering $308k Avg Salary
hires for AI/ML
Jobs
$275k – $315k per year • In office • Full-Time • San Francisco
Quantization
JAX
Knowledge Distillation
Function Calling
PyTorch
Synthetic Data
DPO
SFT
PPO
GRPO
Post-training
TPU
AWS Trainium
LLM Evaluation
Speculative Decoding
Tool Use
Model Distillation
Apply
$275k – $315k per year • In office • Full-Time • San Francisco
Embeddings
RLHF
Reinforcement Learning
JAX
Function Calling
AI Agents
PyTorch
LLM
Triton
Post-training
Pre-training
TPU
AWS Trainium
MLIR
Apache TVM
XLA
Tool Use
Reward Modeling
Robotics
Reinforcement Learning
Apply
$225k – $275k per year • In office • Full-Time • San Francisco
JavaScript
Weights & Biases
Perplexity
Ray
TPU
AWS Trainium
Frontend
Next.js
React.js
DevOps
SLURM
AWS
Kubernetes
Design
Figma
Management
Slack
Apply
$285k – $315k per year • In office • Full-Time • San Francisco
C
C++
MPI
C++
LLVM
AI/ML
CUDA Toolkit
CUDA
Post-training
Pre-training
TPU
InfiniBand
NVLink
ROCm
AWS Trainium
MLIR
Frontend
Sass
Mobile
Metal
DevOps
HPC
Apply
$285k – $315k per year • In office • Full-Time • San Francisco
Rust
C++
LLVM
AI/ML
CUDA Toolkit
CUDA
Triton
Post-training
Pre-training
TPU
ROCm
AWS Trainium
MLIR
Apache TVM
XLA
Frontend
Sass
Management
Notion
Apply
$275k – $315k per year • In office • Full-Time • San Francisco
Rust
C++
Post-training
TPU
NCCL
InfiniBand
NVLink
AWS Trainium
DevOps
KVM
QEMU
Management
Notion
Apply