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
Uniphore is an enterprise artificial intelligence technology company headquartered in Palo Alto, California, and founded in 2008. The company provides a business AI platform that integrates data, knowledge, and models to automate front-office and back-office workflows using conversational AI, speech analytics, and agentic AI solutions. It serves over 2,000 businesses across more than 20 countries, focusing on large-scale deployments in industries such as financial services, healthcare, telecommunications, and retail.
HQ: Palo Alto, United States • Speech & Audio AI • Business Process Automation (BPA) • Software • LLM & Generative AI • AI Agents • Conversational AI • Artificial Intelligence • 501-1000 employees • Est. 2008
$175k – $241k per year • Equity • Executive • 8+ years exp • In office (Palo Alto, United States) • Full-Time • Architect
ChatGPT
Claude
Copilot
Gemini
LLM
Multimodal AI
Perplexity
Knowledge Graph
≈ $141k – $306k per year (Estimated) • Staff+ • 12+ years exp • In office (London, United Kingdom) • Bachelor's Degree • Full-Time • Staff
Node JS
Python
SQL
JavaScript
AI/ML
Fine-tuning
Knowledge Distillation
LLM
Multimodal AI
Prompt Engineering
RAG
Agentforce
AI Agents
EU AI Act
Knowledge Graph
Model Context Protocol
Frontend
Emotion
GraphQL
React.js
Vue.js
DevOps
CI/CD
Docker
Kubernetes
Platform Engineering
Vector
Cybersecurity
GDPR
HIPAA
SOC 2
Marketing
Salesforce
Salesforce is a global leader in cloud-based customer relationship management (CRM) software, helping businesses connect with their customers in a whole new way. Its comprehensive Customer 360 platform provides integrated applications for sales, customer service, marketing automation, e-commerce, and analytics.
HQ: San Francisco, United States • Software • Information Technology • Sales & Marketing • Media & Entertainment • AI Agents • Commerce • Books • Professional Services • Artificial Intelligence • Marketplaces • Marketing Automation • Cloud Computing • Customer Relationship Management (CRM) • 1001-5000 employees
$197k – $314k per year • Staff+ • 5+ years exp • In office (Washington, Atlanta, San Francisco, 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
≈ $48k – $122k per year (Estimated) • Senior • 6+ years exp • In office (Mexico City, Mexico) • PhD • Full-Time • Senior
Apex
Python
SQL
Apex
Salesforce Data Cloud
Databases
Amazon Neptune
Neo4j
Snowflake
AI/ML
AI Agents
dbt
Agentforce
Knowledge Graph
Claude
Claude Code
Copilot
Cursor
Spark
DevOps
AWS
Azure
GCP
GitHub
Analytics
ETL/ELT
Marketing
Salesforce
KION Group is a Frankfurt company that owns the Linde and STILL forklift brands and the Dematic automation business. Its supply chain solutions arm builds automated warehouses and the software that runs them for retailers and manufacturers. The group is one of the biggest industrial trucks and automation companies in the world.
HQ: Frankfurt am Main, Germany • Artificial Intelligence • Transportation & Logistics • Supply Chain • 5000+ employees • Est. 2006
$121k – $152k per year • Senior • 12+ years exp • Remote/Hybrid (Atlanta, Grand Rapids, United States) • PhD • Senior
Python
Databases
Google BigQuery
Trino
AI/ML
AI Agents
Embeddings
Google ADK
LangGraph
RAG
Vertex AI
LangChain
Context Engineering
Function Calling
Knowledge Graph
Model Context Protocol
DevOps
Docker
GCP
Google Cloud Run
Kubernetes
Vector
Fractal is a global artificial intelligence and analytics firm headquartered in New York, United States, and founded in 2000. The company provides enterprise AI solutions, decision intelligence services, and specialized products like Crux Intelligence and Eugenie.ai to help organizations scale their AI capabilities. It operates across 10 countries, serving Fortune 500 companies in sectors such as consumer packaged goods, retail, financial services, and healthcare.
HQ: New York, United States • Machine Learning • LLM & Generative AI • IT Consulting • Information Technology • Decision Intelligence • Data Science • Data & Analytics • Artificial Intelligence • 1001-5000 employees • Est. 2000
≈ $26k – $70k per year (Estimated) • Lead • In office (Bengaluru, Mumbai, Hyderabad, Chennai, Pune, India) • Full-Time • Staff
Java
Python
TypeScript
SQL
Databases
Databricks
Snowflake
AI/ML
AI Agents
LLM
Model Context Protocol
Prompt Engineering
RAG
Function Calling
LLM Guardrails
Knowledge Graph
Frontend
GraphQL
DevOps
Git
Rest API
AWS
Azure
CI/CD
Docker
GCP
Kubernetes
Platform Engineering
Management
ServiceNow
Marketing
Salesforce
up to $150k per year • Staff+ • In office (New York, United States) • Full-Time • Architect
Java
Python
TypeScript
SQL
Databases
Databricks
Snowflake
AI/ML
AI Agents
Model Context Protocol
Prompt Engineering
RAG
Function Calling
Knowledge Graph
Frontend
GraphQL
DevOps
Git
Rest API
AWS
Azure
CI/CD
Docker
GCP
Kubernetes
Platform Engineering
Management
ServiceNow
Marketing
Salesforce
up to $185k per year • Lead • In office (New York, United States) • Full-Time • Architect
Java
Python
TypeScript
SQL
Databases
Databricks
Snowflake
AI/ML
AI Agents
Model Context Protocol
Prompt Engineering
RAG
Function Calling
Knowledge Graph
Frontend
GraphQL
DevOps
Git
Rest API
AWS
Azure
CI/CD
Docker
GCP
Kubernetes
Platform Engineering
Management
ServiceNow
Marketing
Salesforce
Testsigma is a #SmartTestAutomation software for Web, Mobile applications, API services to achieve Continuous Testing with a Shift-Left approach.
Bengaluru • Quality Assurance • Software • Information Technology • Est. 2017
≈ $29k – $119k per year (Estimated) • In office (Bengaluru, India)
JavaScript
Node JS
Python
TypeScript
Python
Celery
FastAPI
Databases
Neo4j
Redis
PostgreSQL
pgvector
Pinecone
Weaviate
AI/ML
AutoGen
CrewAI
LangChain
LangGraph
Prompt Engineering
RAG
Knowledge Graph
AI Agents
DevOps
GitHub
Management
Jira
QA
Playwright
ansrsource is a learning design and content development company headquartered in Austin, Texas, and founded in 2003. The company provides end-to-end digital learning solutions, including custom course design, accessibility services, content digitization, and AI-powered learning transformation for educational institutions and corporations. Operating globally with a team of over 200 learning architects, it serves educational publishers, non-profits, and global capability centers through its offices in the United States and India.
HQ: Austin, United States • Skill Assessment • Publishing • Media & Entertainment • EdTech Platforms • Education • E-learning • Corporate Training • Est. 2003
≈ $25k – $66k per year (Estimated) • Senior • 4+ years exp • In office (Bengaluru, India) • Senior
Java
Java
Gradle
Hibernate
Maven
Quarkus
Spring Boot
Databases
Amazon Aurora
DynamoDB
MySQL
PostgreSQL
Redis
AI/ML
AI Agents
Embeddings
Prompt Engineering
RAG
Knowledge Graph
LLM Guardrails
Mobile
JUnit
DevOps
Amazon EC2
AWS
AWS Lambda
CI/CD
Docker
GitLab CI
Kubernetes
Rest API
Vector
Amazon S3
GitLab
IAM
Cybersecurity
SonarQube
Veracode
QA
Pytest
Banco Santander is a prominent multinational financial services company that provides retail, commercial, and investment banking products to millions of customers globally. The institution is recognized as one of the largest banking groups in the world, maintaining a dominant market presence throughout Europe and the Americas. Headquartered in Madrid, Spain, the global bank operates an extensive network of branches and subsidiaries to deliver tailored financial solutions to its diverse international client base.
HQ: Madrid, Spain • Events & Ticketing • Corporate Events • Artificial Intelligence • Credit Cards • Financial Services • Banking • 1001-5000 employees
≈ $55k – $133k per year (Estimated) • Staff+ • 6+ years exp • Remote/Hybrid (Madrid, Spain) • Bachelor's Degree • Full-Time • Architect • English: C1 • Spanish: B2
Python
AI/ML
AutoGen
CrewAI
LangGraph
LLM
RAG
Semantic Kernel
LangChain
AI Agents
GraphRAG
Knowledge Graph
LLM Guardrails
Model Context Protocol
DevOps
AWS
Azure
CI/CD
Git
Rest API
≈ $41k – $115k per year (Estimated) • Middle • 4+ years exp • Remote/Hybrid (Spain) • Bachelor's Degree • Full-Time • Middle • Spanish: B2 • English: B2
Python
Python
FastAPI
AI/ML
AI Agents
AutoGen
AWS Bedrock
Claude
CrewAI
Fine-tuning
Langfuse
LangGraph
Llama
LLM
LoRA
Mistral
Model Context Protocol
Ollama
Promptfoo
RLHF
Semantic Kernel
Unsloth
vLLM
Windsurf
LangChain
PEFT
A2A
Amazon SageMaker
Anthropic
Devin
GraphRAG
Knowledge Graph
OpenAI
SFT
Function Calling
DevOps
AWS
AWS Lambda
CI/CD
Docker
Git
Kubernetes
Rest API
Terraform
Amazon S3
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
$197k – $225k per year • Lead • 4+ years exp • In office (McLean, Richmond, United States) • Bachelor's Degree • Full-Time • Staff
Go
JavaScript
Python
SQL
TypeScript
AI/ML
Embeddings
Knowledge Graph
RAG
DevOps
AWS
Azure
Docker
GCP
Kubernetes
Vector
Founded in 1982 in Portland, Oregon, Wieden+Kennedy is one of the world's largest independent advertising agencies. The company is globally renowned for creating provocative, culturally impactful marketing campaigns for major international brands, most notably coining Nike's iconic "Just Do It" slogan. Operating offices across North America, Europe, and Asia, it provides full-service creative, strategy, media, and production services to shape consumer culture.
HQ: Portland, United States • Media & Entertainment • Advertising • Sales & Marketing • Creative Agencies • 5000+ employees • Est. 1992
≈ $129k – $261k per year (Estimated) • Executive • 10+ years exp • In office (Chicago, Tampa, Austin, Waltham, Philadelphia, United States) • Full-Time • Staff
Human-in-the-Loop
Knowledge Graph
CrowdStrike is a global cybersecurity leader specializing in cloud-delivered endpoint protection, threat intelligence, and cyberattack response services. Headquartered in Austin, Texas, and publicly traded on the Nasdaq (CRWD), the company provides real-time security solutions to enterprises worldwide.
HQ: Austin, United States • Cybersecurity AI • LLM & Generative AI • Artificial Intelligence • Professional Services • Application Security • Threat Intelligence • Endpoint Security • Cybersecurity • 5000+ employees
≈ $146k – $242k per year (Estimated) • Equity • Senior • United States • Remote (United States) • Full-Time • Senior
Go
Python
Rust
AI/ML
Knowledge Graph
DevOps
SLI/SLO/SLA
Platform Engineering
Cybersecurity
Crowdstrike
QA
Swagger
≈ $129k – $253k per year (Estimated) • Equity • Senior • 8+ years exp • Remote/Hybrid (Sunnyvale, United States) • PhD • Full-Time • Senior
Python
SQL
Databases
Apache Kafka
AI/ML
Anomaly Detection
Embeddings
Hybrid Search
NLP
RAG
Reinforcement Learning
Spark
AI Agents
Feature Store
Knowledge Graph
Recommender Systems
Time Series Forecasting
DevOps
Kubernetes
Vector
Amazon S3
Cybersecurity
Crowdstrike
Analytics
A/B Testing
ENAM is an Indian investment banking and management firm offering IPO, M&A and corporate finance advisory services. It also manages long-term investments and custom portfolios for institutions, businesses and HNIs.
Mumbai • Investment Banking • Asset Management • Financial Services • Est. 1984
≈ $24k – $66k per year (Estimated) • Middle • 4+ years exp • Remote/Hybrid (Mumbai, India) • Full-Time • Middle
Python
AI/ML
Anomaly Detection
LLM
Multimodal AI
PyTorch
TensorFlow
Knowledge Graph
AI Agents
DevOps
AWS
Azure
GCP
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
≈ $27k – $72k per year (Estimated) • Lead • 15+ years exp • Hyderabad • Remote (India) • Architect
Python
Apex
Apex
MuleSoft
Databases
Neo4j
Oracle
Apache Kafka
DynamoDB
AI/ML
AI Agents
Claude
LangGraph
Prompt Engineering
LangChain
Human-in-the-Loop
Knowledge Graph
OpenAI Agents SDK
Chain-of-Thought
Langfuse
LangSmith
LLM
Model Context Protocol
RAG
DevOps
AWS
AWS Lambda
Azure
GCP
Vector
Amazon Kinesis
Amazon S3
Analytics
A/B Testing
Management
ServiceNow
Marketing
Salesforce
Harmonic's data engine keeps 35M+ companies & 195M+ professional profiles fresh, so you can always be in the loop when a company just raised a round, just hired a CTO, or just crossed the 1M follower mark on Twitter.
New York • Hardware • Cybersecurity • Blockchain & Crypto
$180k – $220k per year • Senior • 5+ years exp • Remote/Hybrid (New York, United States) • Full-Time • Senior
AI Agents
Knowledge Graph
Coface is a global leader in trade credit insurance, risk management, and business information services. Operating across dozens of countries, the company helps businesses of all sizes protect their revenue streams against commercial default and non-payment risks. By providing deep economic insights, credit assessments, and debt recovery solutions, Coface enables organizations to trade safely and expand securely in domestic and international markets.
Jakarta • Princeton • Miami • Dresden • Mainz • Risk Management • Financial Services • Insurance
≈ $38k – $95k per year (Estimated) • Middle • 3+ years exp • Remote/Hybrid (Bois-Colombes, France) • Full-Time • Junior • French
Python
AI/ML
Airflow
Embeddings
Transformers
Knowledge Graph
DevOps
CI/CD
Docker
Git
Kubernetes
Sitecore is a Danish software company founded in 2001 and headquartered in Copenhagen. Its digital experience platform combines content management, commerce and personalisation for large brands. The product is used by thousands of enterprises worldwide.
HQ: Copenhagen, Denmark • Software • Content Management Systems (CMS) • Artificial Intelligence • Est. 2001
≈ $86k – $169k per year (Estimated) • In office (Dublin, Ireland) • Full-Time
LLM
RAG
AI Agents
Knowledge Graph
Model Context Protocol
Check Point Software Technologies is a global cybersecurity leader headquartered in Tel Aviv, Israel, that pioneered the modern firewall. The company provides an AI-powered, cloud-delivered platform - Check Point Infinity - designed to protect organizations against advanced cyber threats across networks, endpoints, cloud, and IoT environments. Trusted by tens of thousands of organizations worldwide, it delivers consolidated security management and real-time threat prevention to safeguard critical enterprise data.
HQ: Tel Aviv, Israel • Information Technology • Artificial Intelligence • Information Security • Network Security • Cybersecurity • Est. 1993
≈ $82k – $233k per year (Estimated) • Senior • 5+ years exp • In office (Tel Aviv, Israel) • Bachelor's Degree • Full-Time • Senior
Python
Databases
PostgreSQL
Neo4j
AI/ML
AI Agents
Knowledge Graph
LangChain
NumPy
Pandas
RAG
DevOps
AWS
Azure
Docker
GCP
Git
Kubernetes
Gorgias is a leading customer service and helpdesk platform built specifically for e-commerce businesses. Rather than serving as a generic support tool, it integrates directly with major e-commerce backends (such as Shopify, BigCommerce, and Adobe Commerce/Magento). This allows support teams to view complete customer order histories, process refunds, edit orders, and issue gift cards directly inside the support ticket.
Belgrade • Sydney • Toronto • Paris • Buenos Aires • Technical Support • Software • Customer Relationship Management (CRM)
$111k – $123k per year • Senior • 5+ years exp • In office (Paris, France) • Master's Degree • Full-Time • Senior
Python
Databases
Google BigQuery
AI/ML
AI Agents
dbt
LLM
NLP
Prompt Engineering
RAG
Vertex AI
Hugging Face
Knowledge Graph
Recommender Systems
ChatGPT
Claude
DevOps
GCP
Analytics
A/B Testing
Management
Slack
Sword Group is a technology company headquartered in Windhof, Luxembourg and listed on Euronext Paris. It delivers software engineering, data and digital transformation services across Europe and beyond. The group employs several thousand specialists in more than fifty countries.
HQ: Luxembourg City, Luxembourg • Data & Analytics • Cybersecurity • Information Technology • Est. 2000
≈ $108k – $201k per year (Estimated) • Staff+ • In office (London, United Kingdom) • Full-Time • Architect
Python
Databases
Databricks
Snowflake
Microsoft Fabric
AI/ML
Fine-tuning
Gemini
Prompt Engineering
RAG
Semantic Search
AI Agents
Anthropic
Function Calling
Human-in-the-Loop
Knowledge Graph
LLMOps
OpenAI
Semantic Search
DevOps
Azure
CI/CD
Git
Kubernetes
Platform Engineering
Rest API
Management
ServiceNow
Relativity is a legal data intelligence company based in Chicago, Illinois, and founded in 2001. The company develops an AI-powered platform, RelativityOne, which helps legal professionals manage and analyze large volumes of complex data for e-discovery, litigation, and internal investigations. It serves a global client base including law firms, government agencies, and corporations, operating through a vast ecosystem of service providers and technology partners.
HQ: Chicago, United States • Incident Response • Cybersecurity • LLM & Generative AI • Data Management • Professional Services • Data & Analytics • Artificial Intelligence • Legal Services • 1001-5000 employees • Est. 2001
$188k – $282k per year • Executive • 12+ years exp • In office (New York, Washington, United States) • Bachelor's Degree • Full-Time • Architect
Databricks
Snowflake
AI/ML
AI Agents
Reranking
Knowledge Graph
