Tether is a digital asset company founded in 2014 that issues USDT, the largest stablecoin in circulation and the most heavily traded asset in crypto markets. Each token is intended to hold a one-to-one peg with the United States dollar and is backed by a reserve portfolio dominated by short-dated Treasury bills, with regular attestation reports published on the reserve composition. Headquartered in San Salvador, El Salvador, the group has expanded beyond stablecoin issuance into gold-backed tokens, Bitcoin mining, energy, peer-to-peer communications and local artificial intelligence infrastructure.
HQ: San Salvador, El Salvador • Crypto Payments • Data Centers • Artificial Intelligence • Blockchain & Crypto • Cryptocurrencies • Stablecoins • 1001-5000 employees • Est. 2014
Remote (Romania) • English: B2
JavaScript
TypeScript
AI/ML
LocalAI
Tokenization
Frontend
Preact
React.js
Redux
Redux Toolkit
Zustand
Mobile
State Management
DevOps
WebRTC
Web3
Bitcoin
≈ $90k – $220k per year (Estimated) • Senior • Remote • Senior
Node JS
JavaScript
C++
AI/ML
Tokenization
Frontend
npm
Web3
Bitcoin
≈ $150k – $281k per year (Estimated) • Staff+ • 5+ years exp • Remote • Architect • English: B2
Node JS
JavaScript
AI/ML
Tokenization
Web3
Bitcoin
Ethereum
Smart Contracts
Token Standards
Retell AI is an artificial intelligence software company headquartered in San Francisco, California, and founded in 2023. The company provides a developer-first platform for building, deploying, and monitoring human-like AI voice agents designed to automate contact center operations and phone-based customer service. It serves enterprises across sectors such as healthcare, financial services, and logistics by offering low-latency conversational agents that integrate with existing telephony and CRM systems.
HQ: San Francisco, United States • Financial Services • Unified Communications • Telecommunications • Business Process Automation (BPA) • Software • Conversational AI • Speech & Audio AI • Artificial Intelligence • 51-200 employees • Est. 2023
$72k – $90k per year • Senior • 5+ years exp • Remote (India, Argentina, Brazil, Poland, Romania) • Contractor • Senior
JavaScript
Python
Mobile
Twilio
Cybersecurity
Wireshark
New Relic is an all-in-one web tracking and observability platform that helps software engineers and DevOps teams monitor, analyze, and optimize their entire technology stack. Its cloud platform ingests telemetry data - such as metrics, events, logs, and traces - to deliver real-time insights into application performance and cloud infrastructure health.
San Francisco • Portland • Barcelona • Bengaluru • Atlanta • Information Technology • Data & Analytics • Data Observability
Dublin • Remote (EMEA) • Visa sponsorship • Internship
New Relic
Analytics
Tableau
Management
Google Workspace
Marketing
Salesforce
Circle is a global financial technology company best known as the issuer of USD Coin (USDC) and EURC, two of the world's leading fully backed digital stablecoins. Headquartered in New York City, New York, the firm builds open financial infrastructure and developer APIs that enable internet-native payment settlement, treasury management, and blockchain integration. By bridging traditional banking networks with public blockchain systems, it allows businesses worldwide to store, send, and trade digital value seamlessly.
HQ: New York, United States • Financial Services • Stablecoins • Blockchain & Crypto • Est. 2013
$140k – $170k per year • Lead • 5+ years exp • Remote • Staff
Claude
Claude Code
Cursor
Lovable
Design
Figma
$140k – $170k per year • Lead • 7+ years exp • Remote • Staff
Claude
Claude Code
Cursor
Lovable
Design
Figma
$130k – $140k per year • Senior • 5+ years exp • Remote • Senior
Ruby
TypeScript
JavaScript
Ruby
Ruby on Rails
Databases
MySQL
PostgreSQL
Frontend
Next.js
React.js
Tailwind CSS
Analytics
A/B Testing
Research at the pace of change. In a world moving faster than ever, Maze helps your team decide with evidence.
Design & Creative • Data & Analytics • Product Analytics • 51-200 employees • Est. 2017
≈ $170k – $311k per year (Estimated) • Executive • Remote (EU, United States) • Full-Time • Architect
Anthropic
QA
Rest-Assured
≈ $170k – $311k per year (Estimated) • Executive • Remote (EU, United States) • Full-Time • Architect
Anthropic
QA
Rest-Assured
Neurons Lab helps financial institutions move from AI-curious to AI-enabled. We deliver AI training programs and custom AI agents designed for regulated environments — from pilot to production, at scale.
Madrid • AI Agents • Financial Services • Artificial Intelligence • 501-1000 employees • Est. 2019
≈ $77k – $138k per year (Estimated) • Staff+ • 6+ years exp • Remote (Bulgaria, Cyprus, Czech Republic, Hungary, Italy) • Contractor • Architect • English
Python
TypeScript
AI/ML
AWS Bedrock
Claude
Copilot
Langfuse
LLM
Prompt Engineering
LLM Guardrails
LiveKit
Mobile
Twilio
DevOps
AWS
Chips/EDA
PoC Library
Analytics
A/B Testing
≈ $52k – $92k per year (Estimated) • Middle • 4+ years exp • Remote (Hungary, Poland, Romania, Spain) • Full-Time • Middle
Python
SQL
Databases
OpenSearch
pgvector
Pinecone
PostgreSQL
AI/ML
Composio
LLM
RAG
Unstructured.io
Model Context Protocol
DevOps
AWS
GCP
AWS Step Functions
Cybersecurity
GDPR
Management
Google Workspace
Slack
≈ $39k – $85k per year (Estimated) • Remote (Hungary, Poland, Romania, Spain) • Full-Time
SQL
AI/ML
Knowledge Distillation
LLM
Human-in-the-Loop
Knowledge Graph
Cybersecurity
GDPR
Management
Slack
Welltech is about creating mobile applications that improve the Health of Millions of People around the World! The main distinguishing feature of our People is their desire to constantly grow, develop and learn new things. We currently have 500+ p...
Information Technology • 201-500 employees
Senior • 3+ years exp • Remote (Bulgaria, Hungary, Romania, Armenia, Estonia) • Contractor • Senior
SQL
AI/ML
dbt
Mobile
Adjust
AppsFlyer SDK
Cybersecurity
GDPR
Analytics
Tableau
Marketing
Google Ads
Senior • 3+ years exp • Remote (Bulgaria, Hungary, Romania, Armenia, Estonia) • Contractor • Senior
SQL
AI/ML
dbt
Mobile
Adjust
AppsFlyer SDK
Cybersecurity
GDPR
Analytics
Tableau
Marketing
Google Ads
Junior • 2+ years exp • Remote (Bulgaria, Hungary, Romania, Ukraine, Armenia) • Full-Time • Junior
ElevenLabs
Kling
Midjourney
Runway
Design
Adobe After Effects
Adobe Photoshop
Figma
Docplanner is a healthcare technology company headquartered in Amsterdam, Netherlands, and founded in 2012. It provides a digital platform for patients to find and book medical appointments while offering healthcare professionals practice management software, online marketing tools, and patient communication systems. The company operates in 13 countries across Europe and Latin America, including Poland, Spain, Italy, and Brazil, serving over 100 million monthly patients through brands such as Doctoralia and ZnanyLekarz.
HQ: Amsterdam, Netherlands • Customer Relationship Management (CRM) • Business Process Automation (BPA) • Software • Online Directories & Classifieds • Internet Services • Health Care • Digital Health • 201-500 employees • Est. 2012
≈ $70k – $161k per year (Estimated) • Equity • Executive • 3+ years exp • Barcelona • Warsaw • Remote (Europe) • Full-Time • Architect
Barcelona • Amsterdam • Warsaw • Remote (Europe) • Freelance • Spanish: C2
≈ $71k – $163k per year (Estimated) • Equity • Executive • 3+ years exp • Barcelona • Warsaw • Madrid • Remote (Europe) • Full-Time • Architect
Modularization
Cybersecurity
GDPR
Connect your product & AI agents with 900+ APIs. Build, run, and maintain integrations with AI in code, on infrastructure built for scale.
San Francisco • AI Agents
$140k – $220k per year • Staff+ • Remote (LATAM, Europe, North America) • Full-Time • Staff
TypeScript
Databases
ClickHouse
ElasticSearch
PostgreSQL
Redis
AI/ML
Replit
Vapi
DevOps
AWS
Azure
GCP
GitOps
Kubernetes
Netlify
Terraform
GitHub
Cybersecurity
GDPR
HIPAA
Okta
Snyk
SOC 2
$140k – $220k per year • Staff+ • 10+ years exp • Remote (LATAM, Europe, North America) • Full-Time • Staff
Node JS
JavaScript
AI/ML
Replit
Vapi
DevOps
AWS
Netlify
GitHub
Cybersecurity
Okta
Snyk
$140k – $220k per year • Staff+ • Remote (LATAM, Europe, North America) • Full-Time • Staff
TypeScript
Databases
ClickHouse
ElasticSearch
PostgreSQL
Redis
AI/ML
Replit
Vapi
DevOps
AWS
Azure
GCP
GitOps
Kubernetes
Netlify
Terraform
GitHub
Cybersecurity
GDPR
HIPAA
Okta
Snyk
SOC 2
Playson is a renowned digital entertainment supplier, founded in 2012, which has developed worldwide recognition in the iGaming industry. We operating across 27 regulated markets and partnering with more than 200 operators worldwide. The company offers a diverse portfolio of online casino games, combining engaging math models with high-quality design and immersive gameplay experiences.
HQ: Warsaw, Poland • Game Development • Gaming • iGaming & Gambling
Senior • 5+ years exp • Remote (EU) • Full-Time • Senior
C#
JavaScript
Python
SQL
TypeScript
Python
SQLAlchemy
Databases
ClickHouse
DynamoDB
MySQL
DevOps
Datadog
Kubernetes
New Relic
Splunk
QA
JMeter
k6
Locust
Playwright
Pytest
Rest-Assured
Selenium
Senior • 5+ years exp • Remote (EU) • Full-Time • Senior
Spine
Design
Adobe Photoshop
Senior • Remote (EU) • Full-Time • Senior • English: B2 • Ukrainian (Optional)
C#
C++
Go
Java
Node JS
Python
TypeScript
JavaScript
Databases
Apache Kafka
ClickHouse
DevOps
AWS
gRPC
Kubernetes
Enode's APIs enable you to instantly connect users' energy devices - including EVs, solar inverters, home batteries and thermostats - to your app. You can surface data, and then take action with it. Our out-of-the-box algorithms allow you to contr...
Oslo • Hardware • Internet of Things • Energy & Utilities
≈ $107k – $238k per year (Estimated) • Lead • 3+ years exp • Remote (Europe) • Full-Time • Staff
≈ $68k – $192k per year (Estimated) • Senior • Remote (Europe) • Full-Time • Senior
TypeScript
Databases
PostgreSQL
TimescaleDB
DevOps
AWS
Remote (Europe) • Full-Time
JavaScript
TypeScript
Databases
PostgreSQL
Frontend
React.js
DevOps
CI/CD
Platform Engineering
AWS
CloudFormation
Docker
Neo4j is the world's leading graph database platform, engineered specifically to store, query, and analyze highly connected data. Unlike traditional relational databases that rely on rigid tables and costly JOIN operations, Neo4j models data naturally using nodes (entities), relationships (connections), and properties (key-value attributes).
HQ: San Mateo, United States • Big Data • Information Technology • Database Management
Lead • 8+ years exp • Remote (EMEA) • Cofounder • Staff
Java
Databases
Neo4j
PostgreSQL
Apache Kafka
AI/ML
Knowledge Graph
LangChain
LlamaIndex
GraphRAG
Mobile
Clean Architecture
DevOps
CI/CD
Docker
Senior • 8+ years exp • Remote (EMEA) • Cofounder • Senior
Java
Databases
Neo4j
PostgreSQL
Apache Kafka
AI/ML
Knowledge Graph
Mobile
Clean Architecture
DevOps
CI/CD
Docker
Lead • Remote (EMEA) • Cofounder • Staff
Neo4j
AI/ML
Knowledge Graph
Testlio is an AI-powered crowdsourced software testing and quality assurance (QA) platform headquartered in Austin, Texas, with operational origins in Tallinn, Estonia. Founded in 2012 by Kristel Kruustük and Marko Kruustük, the Series B enterprise has raised over $19 million in venture backing from investors including Spring Lake Equity Partners and Techstars.
HQ: Austin, United States • Software • Information Technology • Quality Assurance • Est. 2012
Equity • Staff+ • 10+ years exp • Remote (EMEA, United States) • Master's Degree • Freelance • Architect
≈ $35k – $114k per year (Estimated) • Junior • 2+ years exp • Remote (India, Argentina, Brazil, Canada, Czech Republic) • Master's Degree • Freelance • Junior
CI/CD
QA
Postman
SoapUI
TestRail
Equity • Lead • 5+ years exp • Remote (EMEA) • Visa sponsorship • Freelance • Staff
JavaScript
Node JS
TypeScript
Databases
Apache Kafka
AI/ML
AI Agents
Claude
Claude Code
LLM
Function Calling
Frontend
GraphQL
React.js
DevOps
AWS
Datadog
New Relic
QA
Sentry
CAST AI is an AI-driven cloud automation and Kubernetes cost optimization platform built to help enterprises manage, scale, and secure their cloud infrastructure. Founded in 2019 and headquartered in Miami, Florida, the company automates cloud operations across major hyper-scalers including Amazon Web Services (AWS), Google Cloud Platform (GCP), and Microsoft Azure.
HQ: Miami, United States • Information Technology • Virtualization • DevOps
Equity • Senior • Remote (EU) • Visa sponsorship • Senior
Go
TypeScript
AI/ML
AI Agents
DeepSeek
MiniMax
Anthropic
Model Context Protocol
OpenAI
DevOps
AWS
Azure
CI/CD
GCP
Grafana
Kubernetes
OpenTelemetry
Prometheus
Cybersecurity
Least Privilege
Equity • Senior • Remote (EU, Europe) • Relocation • Visa sponsorship • Senior
Go
AI/ML
AI Agents
Hugging Face
DevOps
Akamai
Amazon EKS
AWS
Azure
Azure AKS
containerd
CRI-O
GCP
Google GKE
gRPC
Kubernetes
Equity • Senior • Remote (EU, Europe) • Visa sponsorship • Internship • Senior
Hugging Face
DevOps
Akamai
Kubernetes
MLabs is a global software engineering consultancy specializing in high-assurance software engineering, formal verification, and mission-critical systems. Founded in 2018, the company focuses on functional programming languages like Haskell and Rust to build secure, high-performance infrastructure for blockchain, Web3, fintech, and AI projects.
HQ: London, United Kingdom • Information Technology • Blockchain & Crypto • Software
$70k – $93k per year • Remote (Europe)
RemotePass is a comprehensive platform designed to streamline HR and payroll management for global and local teams. It allows companies to onboard, manage, and pay contractors and employees across more than 150 countries with full compliance. RemotePass offers an all-in-one solution for HR operations, including Employer of Record services, visa and work permit sponsorship, time off management, and benefits customization to suit different countries.
Sales & Marketing • Media & Entertainment • Financial Services • Insurance • Influencers • Advertising
Equity • Senior • 5+ years exp • Remote (United Arab Emirates, United Kingdom, Poland, Romania, Spain) • Senior
Our core values tell our story:Excellence. Creativity. Integrity. Teamwork. Empathy.
San Diego • Zurich • Artificial Intelligence • Design & Creative • Financial Services • Software • IT Consulting • Information Technology • 201-500 employees
≈ $118k – $260k per year (Estimated) • Staff+ • 10+ years exp • Remote (Europe) • Bachelor's Degree • Architect
Python
SQL
Databases
MySQL
PostgreSQL
Snowflake
AI/ML
AI Agents
Anomaly Detection
Claude
Embeddings
Fine-tuning
Function Calling
Hallucination
LLM
NLP
NumPy
Pandas
Prompt Engineering
PyTorch
RAG
Reranking
Scikit-learn
Sentiment Analysis
Spark
TensorFlow
Vertex AI
Amazon SageMaker
Anthropic
Context Engineering
Hugging Face
Human-in-the-Loop
Structured Outputs
Claude Code
LangChain
LangGraph
LlamaIndex
Model Context Protocol
Semantic Kernel
LLM Guardrails
LLMOps
DevOps
AWS
AWS Lambda
Azure
GCP
Vector
Amazon S3
CI/CD
Docker
Kubernetes
Analytics
Matplotlib
Power BI
Seaborn
Tableau
ETL/ELT
Management
ServiceNow
RunPod is a cloud computing company headquartered in Mount Laurel, New Jersey, and founded in 2022. The company provides a specialized AI developer cloud featuring on-demand GPU instances, serverless GPU endpoints, and multi-node GPU clusters for training and inference. It operates a global infrastructure across more than 30 regions, serving over one million developers with scalable compute resources for machine learning and generative AI workloads.
HQ: Mount Laurel, United States • IT Infrastructure • LLM & Generative AI • Machine Learning • Artificial Intelligence • Hardware • AI Infrastructure • Information Technology • Cloud Computing • Est. 2022
$100k – $180k per year • Equity • Middle • 3+ years exp • Remote (EMEA, United States) • Bachelor's Degree • Full-Time • Middle
Go
JavaScript
Node JS
Python
SQL
Python
Django
Flask
Databases
MySQL
PostgreSQL
AI/ML
Fine-tuning
LLM
PyTorch
RunPod
AI Agents
Frontend
React.js
DevOps
Docker
Ubuntu
$81k – $96k per year • Equity • Senior • 5+ years exp • Remote (EMEA) • Bachelor's Degree • Full-Time • Senior
Go
JavaScript
Node JS
Python
SQL
Python
Django
Flask
Databases
MySQL
PostgreSQL
AI/ML
Fine-tuning
LLM
PyTorch
RunPod
AI Agents
Frontend
React.js
DevOps
Datadog
Docker
Grafana
Ubuntu
TigerData is a database company headquartered in New York City, founded in 2017 and known until 2025 as Timescale. The company develops TimescaleDB, a PostgreSQL extension for time-series, events, and real time analytics, and offers a managed cloud service built on it. It serves developers working on IoT telemetry, financial data, observability, and AI applications, and maintains the core project as open source alongside its commercial cloud.
HQ: New York, United States • Software • Big Data • Data Warehousing • Data & Analytics • Database Management • Information Technology • Est. 2017
≈ $64k – $150k per year (Estimated) • Equity • Remote (EMEA, United States) • Bachelor's Degree • Full-Time
Python
Databases
PostgreSQL
TimescaleDB
AI/ML
AI Agents
DevOps
AWS
Azure
GCP
Docker
Kubernetes
NearForm is an Irish software company founded in 2011 and headquartered near Waterford. It builds digital products and open source platforms for international clients. The company led the development of several national contact tracing apps.
HQ: Waterford, Ireland • AI Agents • Digital Goods • Artificial Intelligence • Est. 2011
≈ $31k – $39k per year (Estimated) • Senior • 6+ years exp • Remote (Romania) • Full-Time • Senior • English: C1
Go
JavaScript
Python
DevOps
Git
Kubernetes
