A deep dive into the technology behind building Slack. Written by engineers, for engineers passionate about solving complex technical problems.
HQ: San Francisco, United States
$197k – $314k per year • Staff+ • 5+ years exp • In office (San Francisco, Atlanta, Washington, United States) • PhD • Full-Time • Staff
Java
PHP
Python
Ruby
Scala
AI/ML
Fine-tuning
JAX
Multimodal AI
NLP
PyTorch
TensorFlow
Agentforce
AI Agents
ONNX
Quantization
RAG
TensorRT
Knowledge Graph
Recommender Systems
Management
Slack
Marketing
Salesforce
Capital One is a U.S. financial services company that offers credit cards, banking, savings, auto loans, and business products. Its mission is to "change banking for good" by combining technology, simplicity, and customer-focused financial services.
HQ: McLean, United States • Personal Finance • Banking • Financial Services • Est. 1994
$230k – $262k per year • Lead • 6+ years exp • In office (McLean, San Francisco, Cambridge, San Jose, New York, United States) • Bachelor's Degree • Full-Time • Staff
Go
Java
Python
Scala
C#
C++
C++
PyTorch C++
AI/ML
LLM
NeMo Guardrails
PyTorch
Hugging Face
LLM Guardrails
NVIDIA NeMo
AI Agents
DevOps
AWS
Azure
GCP
$245k – $279k per year • Equity • Lead • 8+ years exp • In office (San Francisco, United States) • Relocation • Visa sponsorship • Bachelor's Degree • Full-Time • Principal
Go
Java
Python
Scala
C#
C++
C++
PyTorch C++
AI/ML
LLM
NeMo Guardrails
PyTorch
Hugging Face
LLM Guardrails
NVIDIA NeMo
DevOps
AWS
Azure
GCP
Uber Technologies, Inc. is a global transportation and mobility platform headquartered in San Francisco, California. Founded in 2009 by Garrett Camp and Travis Kalanick, the company revolutionized urban transit by pioneering ride-hailing via a smartphone app.
HQ: San Francisco, United States • Transportation & Logistics • Delivery • Ride Hailing • 1001-5000 employees • Est. 2009
$267k – $297k per year • Equity • Staff+ • 7+ years exp • In office (San Francisco, United States) • Master's Degree • Staff
LLM
Multimodal AI
AI Agents
$232k – $258k per year • Equity • Staff+ • 5+ years exp • In office (San Francisco, United States) • Bachelor's Degree • Staff
C++
Go
Java
Python
AI/ML
LLM
Multimodal AI
LLM Evaluation
AI Agents
Speech Recognition
$202k – $224k per year • Equity • Senior • 5+ years exp • In office (San Francisco, United States) • Senior
Python
AI/ML
Computer Vision
JAX
Multimodal AI
PyTorch
Quantization
TensorFlow
ONNX
OCR
SynergisticIT is a Fremont, California-based IT workforce development, staffing, and software development firm founded in 2010. The company operates a hybrid model that combines tech upskilling/bootcamps, job placement programs, and IT consulting services for enterprise clients.
HQ: Fremont, United States • Human Resources • Corporate Training • Information Technology • Est. 2010
$95k – $154k per year • Junior • Fargo • Remote (United States) • Bachelor's Degree • Full-Time • Junior
$95k – $154k per year • Junior • Washington • Remote (United States) • Bachelor's Degree • Full-Time • Junior
Granicus connects governments with the people they serve by providing the first and only civic engagement platform for the public sector. Over 5,500 federal, state, and local government agencies and more than 300 million citizen subscribers power an unmatched Subscriber Network that turns government missions into quantifiable results. With comprehensive cloud-based solutions for communications, government website design, meeting and agenda management software, records management, and digital services, Granicus empowers stronger relationships between government and residents across the U.S., U.K., Australia, New Zealand, and Canada.
Perm • Washington • Columbia • Content Management Systems (CMS) • Artificial Intelligence • Software • Government • Digital Government
$165k – $205k per year • Lead • 7+ years exp • Remote (United States, India, United Kingdom, Australia, Canada) • Bachelor's Degree • Full-Time • Principal
LLM
RAG
AI Agents
Cybersecurity
FedRAMP
SOC 2
Lyra Health is the leading provider of Workforce Mental Health benefits, available to more than 15 million people worldwide. The company offers a full spectrum of care offerings, from preventive to severe.
New York • Mexico City • Bengaluru • Nashik • Kochi • Analytics Platforms • Health Care • Mental Health
$161k – $222k per year • Staff+ • 8+ years exp • Remote (United States) • Full-Time • Staff
Python
Java
Kotlin
Python
Celery
Databases
Apache Kafka
AI/ML
Fine-tuning
LLM
RAG
LLM Guardrails
DevOps
AWS
CI/CD
Docker
Kubernetes
Vector
Cybersecurity
HIPAA
SOC 2
$143k – $197k per year • Senior • 6+ years exp • Remote (United States) • Full-Time • Senior
Python
Java
Kotlin
Python
Celery
AI/ML
RAG
DevOps
Docker
Kubernetes
AWS
Vector
≈ $128k – $229k per year (Estimated) • Senior • 6+ years exp • United States • Remote (United States) • Full-Time • Senior
Python
Java
Kotlin
Python
Celery
AI/ML
RAG
DevOps
Docker
Kubernetes
AWS
Vector
Veeva delivers the industry cloud for life sciences with applications, agents, data, and consulting. Committed to innovation, product excellence, and customer success, Veeva serves more than 1,500 customers, ranging from the world's largest pharmaceutical companies to emerging biotechs.
Warsaw • San Francisco • Milan • Paris • Lisbon • Cloud Computing • Health Care • Software • 1001-5000 employees
$100k – $175k per year • Raleigh • Remote (United States) • Bachelor's Degree • Full-Time
Java
AI/ML
AI Agents
Claude
Claude Code
Function Calling
LangChain
LangGraph
Model Context Protocol
Prompt Engineering
RAG
Anthropic
LLM Guardrails
OpenAI Agents SDK
DevOps
Git
Rest API
QA
Postman
$100k – $175k per year • Pleasanton • Remote (United States) • Bachelor's Degree • Full-Time
Java
AI/ML
AI Agents
Claude
Claude Code
Function Calling
LangChain
LangGraph
Model Context Protocol
Prompt Engineering
RAG
Anthropic
LLM Guardrails
OpenAI Agents SDK
DevOps
Git
Rest API
QA
Postman
$100k – $175k per year • Boston • Remote (United States) • Bachelor's Degree • Full-Time
Java
AI/ML
AI Agents
Claude
Claude Code
Function Calling
LangChain
LangGraph
Model Context Protocol
Prompt Engineering
RAG
Anthropic
LLM Guardrails
OpenAI Agents SDK
DevOps
Git
Rest API
QA
Postman
Jumio is an IT & Services company that provides service related to online protection for businesses, specializing in online ID verification, card scanning, mobile payments, computer vision, credentials management, and KYC.
HQ: Sunnyvale, United States • Cybersecurity • Fraud Detection • Identity Management • Est. 2010
≈ $107k – $237k per year (Estimated) • Senior • 4+ years exp • Remote (India, United Kingdom, Canada, United States) • Senior
Python
AI/ML
MLFlow
ONNX
PyTorch
TensorRT
Weights & Biases
DevOps
AWS
AWS Lambda
Docker
Rest API
Kubernetes
≈ $155k – $310k per year (Estimated) • Staff+ • 5+ years exp • Remote (India, United Kingdom, Canada, United States) • Staff
Python
AI/ML
Computer Vision
MLFlow
PyTorch
Weights & Biases
TorchServe
CUDA Toolkit
Kubeflow
ONNX
ResNet
TensorRT
Transformers
Triton Inference Server
YOLO
Amazon SageMaker
DevOps
AWS
Docker
Kubernetes
≈ $108k – $223k per year (Estimated) • Junior • 1+ year exp • Remote (United States) • Bachelor's Degree • Internship • Junior
C++
Python
C++
PyTorch C++
TensorFlow C++
AI/ML
Computer Vision
PyTorch
Replicate
Scikit-learn
TensorFlow
Amazon SageMaker
DevOps
Amazon EC2
AWS
Amazon S3
Robotics
ROS
ROS2
We design custom-built solutions to help you transform, scale, and grow your business along with a team that cares about you. Salvo software is a global firm with near-shoring capabilities headquartered in Vancouver, WA. That provides cost-effect...
Vancouver • Portland • Bengaluru • Guadalajara • Mexico City • Software
≈ $129k – $282k per year (Estimated) • Remote (United States) • Bachelor's Degree • Full-Time
Python
Databases
Chroma
FAISS
MySQL
pgvector
PostgreSQL
Weaviate
AI/ML
AWQ
Bitsandbytes
CUDA
CUDA Toolkit
Fine-tuning
GGUF
GPTQ
Hybrid Search
LLM
LoRA
Mistral
Model Context Protocol
Ollama
PyTorch
Quantization
Qwen
RAG
Scikit-learn
TensorFlow
Tokenization
Transformers
vLLM
PEFT
cuDNN
Hugging Face
SFT
AI Agents
TGI
DevOps
Azure
Azure DevOps
CI/CD
Docker
Git
Vector
AWS
Moncton • Manila • Mumbai • London • Chicago
≈ $107k – $221k per year (Estimated) • Lead • Remote (United States, United Kingdom) • Staff
Python
AI/ML
Claude
Claude Code
Model Context Protocol
Prompt Engineering
RAG
Anthropic
OpenAI
AI Agents
LLM
Workato provides an enterprise automation platform combining integration and workflow orchestration. Business and technical teams build recipes connecting hundreds of applications. Governance controls let central teams manage automation built across departments.
HQ: Mountain View, United States • Software • Artificial Intelligence • Middleware Software • 1001-5000 employees • Est. 2013
≈ $166k – $311k per year (Estimated) • Staff+ • 7+ years exp • Palo Alto • Remote (United States) • Bachelor's Degree • Staff
Python
Databases
ElasticSearch
OpenSearch
AI/ML
Embeddings
LLM
NLP
Semantic Search
Knowledge Graph
Semantic Search
AI Agents
Model Context Protocol
DevOps
Vector
≈ $148k – $266k per year (Estimated) • Senior • San Francisco • Remote (United States) • Master's Degree • Senior
CUDA
CUDA Toolkit
JAX
LLM
PyTorch
RAG
Reinforcement Learning
AI Agents
Model Context Protocol
Red Cell Partners is a venture studio and investment firm headquartered in McLean, Virginia, that was founded in 2020. The organization focuses on building, launching, and scaling technology-led companies by providing operational expertise and capital to startups within its portfolio. Its primary practice areas include healthcare, cybersecurity, and national security, where it develops and scales companies to address complex infrastructure and defense challenges.
HQ: McLean, United States • Artificial Intelligence • Digital Health • Cybersecurity • National Security • Government • Health Care • Financial Services • Venture Capital • Est. 2020
$150k – $200k per year • Equity • Senior • 5+ years exp • Remote (United States) • Full-Time • Senior
Python
SQL
Databases
Apache Kafka
pgvector
PostgreSQL
AI/ML
Embeddings
Synthetic Data
Unstructured.io
dbt
Fine-tuning
PyTorch
Scikit-learn
Spark
XGBoost
NIST AI RMF
RAG
DevOps
Vector
AWS
Cognition is an applied artificial intelligence lab founded in 2023 that created Devin, an autonomous software engineering agent able to plan, write and debug code across a full repository. The company drew attention for demonstrating long-horizon coding work rather than single-file completion, and it sells Devin to engineering organisations. In 2025 it acquired the Windsurf coding assistant team and product, broadening its developer tooling.
HQ: San Francisco, United States • Home Healthcare • Artificial Intelligence
≈ $158k – $345k per year (Estimated) • In office (San Francisco, United States) • PhD • Full-Time
Python
AI/ML
Cursor
LLM
PyTorch
Synthetic Data
Devin
Post-training
Pre-training
Scale AI
≈ $167k – $365k per year (Estimated) • In office (San Francisco, United States) • PhD • Full-Time
Cursor
RLHF
Devin
Post-training
Scale AI
≈ $157k – $344k per year (Estimated) • In office (San Francisco, United States) • PhD • Full-Time
C++
Python
C++
PyTorch C++
AI/ML
Cursor
PyTorch
Devin
Scale AI
HiddenLayer is an Austin company founded in 2022 that secures machine learning models against adversarial attack. Its products scan model artefacts for malicious code, detect inference-time attacks such as extraction and evasion, and give security teams visibility into the AI assets running in their environment. The company grew out of research into attacks on production security models.
HQ: Austin, United States • Cybersecurity AI • Artificial Intelligence • Cybersecurity • 51-200 employees • Est. 2022
≈ $152k – $276k per year (Estimated) • Lead • 10+ years exp • Remote (United States) • Internship • Staff
Go
Java
Python
Rust
TypeScript
AI/ML
AutoGen
LangGraph
LangChain
LLM Guardrails
OpenAI
OpenAI Agents SDK
Red Teaming
Structured Outputs
AI Agents
Function Calling
Azumo is a leading software development company that specializes in nearshore services. The company offers a range of solutions, including software development, dedicated teams, staff augmentation, and virtual CTO services. Azumo is particularly known for its expertise in artificial intelligence, mobile app development, data engineering, and cloud services.
HQ: San Francisco, United States • Artificial Intelligence • IT Outsourcing • Software • Est. 2016
≈ $72k – $159k per year (Estimated) • Staff+ • 3+ years exp • San Francisco • Remote (Mexico) • Bachelor's Degree • Full-Time • Architect
Python
Databases
LanceDB
Pinecone
AI/ML
AI Agents
CrewAI
Function Calling
Hallucination
Langfuse
LangGraph
Model Context Protocol
Ragas
Human-in-the-Loop
LLM Guardrails
LLMOps
Structured Outputs
Claude
Claude Code
Copilot
Cursor
LangChain
NLP
DevOps
AWS
Azure
CI/CD
Docker
Git
GitHub
≈ $79k – $174k per year (Estimated) • Staff+ • 3+ years exp • Buenos Aires • Remote (United States, Argentina, Brazil, Colombia, Mexico) • Full-Time • Architect • English: C1
Python
Databases
LanceDB
Pinecone
AI/ML
AI Agents
CrewAI
Function Calling
Hallucination
Langfuse
LangGraph
Model Context Protocol
Ragas
Human-in-the-Loop
LLM Guardrails
LLMOps
Structured Outputs
Claude
Claude Code
Copilot
Cursor
LangChain
NLP
DevOps
AWS
Azure
CI/CD
Docker
Git
GitHub
Middle • 3+ years exp • Buenos Aires • Remote (United States, Argentina, Brazil, Colombia, Mexico) • Full-Time • Middle • English: B2
Python
Databases
FAISS
Pinecone
AI/ML
Fine-tuning
RAG
LLMOps
LangChain
LangGraph
NLP
PyTorch
TensorFlow
DevOps
AWS
Azure
Bicep
CI/CD
Docker
Git
GitHub Actions
Kubernetes
Terraform
GitHub
Cybersecurity
FedRAMP
Porque te puede pasar, dejanos protegerte.. Juntos podemos hacerlo... Vive seguro.
HQ: Mexico City, Mexico • Financial Services • Insurance
≈ $124k – $250k per year (Estimated) • Middle • 4+ years exp • Remote (United States) • Full-Time • Middle
≈ $128k – $259k per year (Estimated) • Middle • 4+ years exp • Remote (United States) • Master's Degree • Full-Time • Middle
Multimodal AI
Self-Supervised Learning
Text-to-Speech
Speech Recognition
≈ $129k – $260k per year (Estimated) • Middle • 4+ years exp • Remote (United States) • Master's Degree • Full-Time • Middle
Reinforcement Learning
AI Agents
Function Calling
RLHF
Synthetic Data
Robotics
Imitation Learning
Canonical is the publisher of Ubuntu, the world's most widely used Linux distribution, headquartered in London. Founded in 2004 by Mark Shuttleworth, the company provides enterprise-grade services, support, and security for open-source software, enabling organizations to deploy and manage workloads consistently across diverse environments. Their portfolio spans the entire compute spectrum - from public and private cloud infrastructure (OpenStack), container orchestration (Kubernetes/MicroK8s), and data center management to specialized edge and IoT computing.
HQ: London, United Kingdom • Artificial Intelligence • Software • Information Technology • 1001-5000 employees • Est. 2004
Lead • Remote (AMER, EMEA) • Staff
Python
AI/ML
Feast
Kubeflow
MLFlow
DevOps
AWS
Azure
Docker
GCP
Kubernetes
Ubuntu
Illumina is an American biotechnology company that develops, manufactures, and markets integrated systems for genetic analysis and DNA sequencing. Founded in 1998 and headquartered in San Diego, California, the company produces next-generation sequencing instruments, microarrays, and reagents used in genomics research, personalized medicine, and clinical diagnostics. Listed on the NASDAQ, it serves academic institutions, pharmaceutical companies, and healthcare providers worldwide to advance precision health and life science discovery.
Bengaluru • Cambridge • San Diego • Tokyo • Madison • Biotechnology • Health Care • Genomics • 1001-5000 employees
≈ $143k – $287k per year (Estimated) • Staff+ • 12+ years exp • Remote (United States) • Visa sponsorship • Bachelor's Degree • Staff
TypeScript
JavaScript
Node JS
Python
AI/ML
LLM
Multimodal AI
Prompt Engineering
Structured Outputs
AI Agents
Function Calling
Anthropic
Human-in-the-Loop
OpenAI
Text-to-Speech
Speech Recognition
Frontend
React.js
Framer Motion
GraphQL
Jotai
Next.js
Redux
Tailwind CSS
Zustand
Mobile
State Management
DevOps
CI/CD
Cloudflare
Git
Vercel
WebSockets
Analytics
A/B Testing
Design
Figma
Framer
QA
Playwright
Sentry
Vitest
TTEC Digital is a customer experience (CX) technology and consulting firm headquartered in Greenwood Village, Colorado, and is a division of TTEC Holdings, founded in 1982. The company provides AI-powered contact center solutions, CX strategy consulting, data analytics, and cloud platform integrations through partnerships with providers like Microsoft and AWS. It operates globally with over 1,500 professionals, serving enterprise clients across various industries to modernize their digital ecosystems and customer engagement operations.
HQ: Greenwood Village, United States • Customer Analytics • Data & Analytics • Conversational AI • IT Consulting • Information Technology • Artificial Intelligence • Customer Relationship Management (CRM) • Software • Est. 1982
$140k – $190k per year • Lead • Austin • Remote (United States) • Full-Time • Principal
RAG
Human-in-the-Loop
AI Agents
AWS Bedrock
DevOps
AWS
≈ $13k – $37k per year (Estimated) • Junior • 2+ years exp • Manila • Remote (United States, Philippines) • Bachelor's Degree • Full-Time • Junior
Node JS
Python
TypeScript
JavaScript
AI/ML
AI Agents
Gemini
Google ADK
LLM
Model Context Protocol
Vertex AI
DevOps
CI/CD
GCP
GitHub Actions
Google Cloud Run
Terraform
GitHub
≈ $13k – $37k per year (Estimated) • Junior • 2+ years exp • Philippines • Remote (United States, Philippines) • Bachelor's Degree • Full-Time • Junior
Node JS
Python
TypeScript
JavaScript
AI/ML
AI Agents
Gemini
Google ADK
LLM
Model Context Protocol
Vertex AI
DevOps
CI/CD
GCP
GitHub Actions
Google Cloud Run
Terraform
GitHub
Simbe combines shelf-scanning robots, fixed sensors, and RFID in one platform, giving retailers accurate inventory, pricing, and shelf data in real time.
HQ: San Francisco, United States • Retail & Shop Systems • Robotics • Retail & Commercial Robotics • 51-200 employees
$120k – $160k per year • Middle • 3+ years exp • Remote/Hybrid (San Francisco, United States) • Full-Time • Middle
Python
SQL
AI/ML
Computer Vision
Multimodal AI
OCR
DevOps
Git
$160k – $200k per year • Senior • 5+ years exp • Remote/Hybrid (San Francisco, United States) • Full-Time • Senior
C++
Python
C++
PyTorch C++
TensorFlow C++
AI/ML
Computer Vision
CUDA Toolkit
Data Augmentation
Multimodal AI
ONNX
PyTorch
Quantization
Synthetic Data
TensorFlow
TensorRT
CUDA
CVAT
Edge AI
OCR
Roboflow
Robotics
Perception
ROS
ROS2
