Rho is an international full-service Contract Research Organization (CRO) and healthcare advisory firm headquartered in Durham, North Carolina, with European headquarters in Riga, Latvia. Founded in 1984 as a biometrics-focused research institute, Rho operates on a B2B and B2G fee-for-service clinical trial design, biostatistical analysis, and regulatory execution model.
HQ: Durham, United States • HQ: Riga, Latvia • Regenerative Medicine • Health Care • Clinical Research • Est. 1984
Senior • 6+ years exp • Remote/Hybrid (Belgrade, Serbia) • Full-Time • Senior
Python
SQL
Databases
PostgreSQL
Snowflake
AI/ML
RAG
Feature Store
LLM Evaluation
OCR
AI Agents
Dagster
MLFlow
Prefect
Vertex AI
Amazon SageMaker
DevOps
GCP
Kubernetes
AWS
Prometheus
Terraform
Vector
Analytics
Power BI
A/B Testing
Poolside is a foundation model company bringing intelligence to everywhere work gets done. Our mission is to drive abundance for humanity by creating artificial general intelligence.
London • Hardware • LLM & Generative AI • Artificial Intelligence
Remote (EMEA, United States) • Full-Time
Python
AI/ML
LLM
Prompt Engineering
Synthetic Data
Tokenization
Post-training
Pre-training
AI Agents
Remote (EMEA, United States) • Full-Time
Go
AI/ML
Reinforcement Learning
AI Agents
DevOps
Kubernetes
Tenstorrent is a Canadian semiconductor company founded in 2016 and led by veteran chip architect Jim Keller. It designs artificial intelligence accelerators and RISC-V processors, and sells intellectual property licences as well as hardware, with an open-source software stack. Investors and licensees include major automotive and technology groups seeking an alternative to closed accelerator ecosystems.
HQ: Toronto, Canada • Embedded Systems • Hardware • Machine Learning • Est. 2016
≈ $121k – $252k per year (Estimated) • Senior • 7+ years exp • In office (Belgrade, Serbia) • Full-Time • Senior
C++
AI/ML
Edge AI
DevOps
RTOS
Tryolabs is a specialized AI and machine learning solutions company that helps companies create business value by partnering with them through their AI journey.
Data & Analytics • Machine Learning • Artificial Intelligence • Est. 2009
≈ $107k – $237k per year (Estimated) • Senior • Remote • Full-Time • Senior
Python
AI/ML
Scikit-learn
XGBoost
DevOps
AWS
Azure
CI/CD
GCP
Terraform
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
Red Hat is the world’s leading provider of open source solutions, using a community-powered approach to provide reliable and high-performing cloud, virtualization, storage, Linux, and middleware technologies. Red Hat also offers award-winning support, training, and consulting services.
HQ: Somerville, United States • Software • Artificial Intelligence • Information Technology • 1001-5000 employees • Est. 1993
≈ $109k – $238k per year (Estimated) • Staff+ • 5+ years exp • United Kingdom • Ireland • Remote (EMEA) • Full-Time • Architect • English: C1
Fine-tuning
Edge AI
LLM Guardrails
AI Agents
DevOps
Kubernetes
OpenShift
Red Hat
OnTheGoSystems is a remote team of tech enthusiasts, innovators, creatives, and engineers. Together, we build products that allow businesses of all sizes to go global.
Belgrade • Zagreb • Kyiv • Bucharest • Athens • Translation Services • Web Development • Software
≈ $58k – $117k per year (Estimated) • Barcelona • Remote (Poland, Serbia, Spain, Ukraine) • Full-Time
Ruby
SQL
Ruby
Ruby on Rails
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 • Remote (EMEA) • Cofounder • Staff
Neo4j
AI/ML
Knowledge Graph
Provectus is a global technology consulting firm that specializes in delivering innovative software solutions to businesses of all sizes. We have a proven track record of success in helping our clients achieve their strategic goals by leveraging our deep expertise in cloud computing, big data, and artificial intelligence. Provectus is a trusted partner for organizations looking to transform their digital landscape and gain a competitive advantage in today's dynamic marketplace.
HQ: New York, United States • System Integration • Biotechnology • Data & Analytics • Est. 2010
Senior • 5+ years exp • Remote (Poland, Serbia, Spain, Ukraine, Slovakia) • Full-Time • Senior
Python
TypeScript
Go
Rust
AI/ML
AWS Bedrock
Claude
Claude Code
LLM
RAG
Anthropic
AWS Bedrock AgentCore
LLM Guardrails
OpenAI
AI Agents
Function Calling
AgentOps
Airflow
NLP
Spark
A2A
LLM Evaluation
LLMOps
Model Context Protocol
DevOps
AWS
AWS Lambda
Azure
GCP
Amazon ECS
Amazon S3
CI/CD
GitHub Actions
GitLab CI
Kubernetes
GitHub
GitLab
≈ $44k – $111k per year (Estimated) • Senior • 5+ years exp • Remote (Bosnia and Herzegovina, Poland, Romania, Serbia, Spain) • Full-Time • Senior
Python
TypeScript
Go
Rust
AI/ML
AWS Bedrock
Claude
Claude Code
LLM
RAG
Anthropic
AWS Bedrock AgentCore
LLM Guardrails
OpenAI
AI Agents
Function Calling
AgentOps
Airflow
NLP
Spark
A2A
LLM Evaluation
LLMOps
Model Context Protocol
DevOps
AWS
AWS Lambda
Azure
GCP
Amazon ECS
Amazon S3
CI/CD
GitHub Actions
GitLab CI
Kubernetes
GitHub
GitLab
Senior • 5+ years exp • Remote (Poland, Serbia, Spain, Armenia, North Macedonia) • Full-Time • Senior
Python
TypeScript
Go
Rust
AI/ML
AWS Bedrock
Claude
Claude Code
LLM
RAG
Anthropic
AWS Bedrock AgentCore
LLM Guardrails
OpenAI
AI Agents
Function Calling
AgentOps
Airflow
NLP
Spark
A2A
LLM Evaluation
LLMOps
Model Context Protocol
DevOps
AWS
AWS Lambda
Azure
GCP
Amazon ECS
Amazon S3
CI/CD
GitHub Actions
GitLab CI
Kubernetes
GitHub
GitLab
JetBrains is a global software vendor specializing in intelligent, productivity-enhancing developer tools and integrated development environments (IDEs). Founded in 2000 and headquartered in Prague, Czech Republic, the company is best known for creating IntelliJ IDEA, PyCharm, WebStorm, Rider, ReSharper, and the Kotlin programming language (which serves as Google's preferred language for Android development).
HQ: Prague, Czech Republic • Artificial Intelligence • Software • Code Intelligence • Productivity Software • 51-200 employees • Est. 2000
Senior • Amsterdam • Remote (Germany, United Kingdom, Cyprus, Czech Republic, Netherlands) • Relocation • Senior
AI Agents
Fine-tuning
Prompt Engineering
Staff+ • Amsterdam • Remote (Germany, United Kingdom, Cyprus, Czech Republic, Netherlands) • Relocation • Staff
Fine-tuning
LLM
Context Engineering
Post-training
AI Agents
Function Calling
Senior • 3+ years exp • Amsterdam • Remote (Germany, Cyprus, Czech Republic, Netherlands, Poland) • Relocation • Senior
Java
Kotlin
Python
SQL
Java
Gradle
Kotlin
Ktor
AI/ML
AI Agents
Claude
Claude Code
Cursor
Langfuse
LLM
MLFlow
Promptfoo
PyTorch
RLHF
TRL
Transformers
Anthropic
Context Engineering
DPO
GRPO
Megatron-LM
OpenAI
Post-training
SFT
Model Context Protocol
Mobile
Kotlin Multiplatform
Toloka is a data company founded in 2014 and headquartered in Amsterdam that supplies human-generated training, fine-tuning and evaluation data for artificial intelligence systems. It began as a large-scale crowdsourcing platform and has repositioned around expert work, combining domain specialists, machine learning tooling and quality control pipelines to produce reasoning traces, preference rankings and agentic task data. Operating within the Nebius group and backed by Bezos Expeditions since 2025, the company serves frontier model laboratories and enterprises building their own systems.
HQ: Amsterdam, Netherlands • Machine Learning • Data & Analytics • Data Collection • LLM & Generative AI • Artificial Intelligence • 51-200 employees • Est. 2014
≈ $84k – $213k per year (Estimated) • Senior • 3+ years exp • Remote (Serbia) • Internship • Senior
Python
AI/ML
AI Agents
AutoGen
Fine-tuning
Knowledge Distillation
LangChain
Llama
LlamaIndex
LLM
Mistral
Reinforcement Learning
Anthropic
Remote (EU, United States, United Kingdom, Serbia) • Master's Degree • Freelance
Python
AI/ML
LLM
LoRA
NumPy
Pandas
PEFT
RAG
RLHF
Synthetic Data
Transformers
Anthropic
DPO
PPO
SFT
AI Agents
Fine-tuning
≈ $136k – $298k per year (Estimated) • Remote (United States, United Kingdom, Netherlands, Serbia) • Master's Degree • Freelance
Python
AI/ML
LLM
LoRA
NumPy
Pandas
PEFT
RAG
RLHF
Synthetic Data
Transformers
Anthropic
DPO
PPO
SFT
AI Agents
Fine-tuning
LiveKit is an open-source real-time audio, video, and AI voice infrastructure platform headquartered in San Francisco. The company provides cloud and developer infrastructure designed to build ultra-low-latency video conferencing, live streaming, and interactive multimodal AI voice agents into web and mobile applications. Powered by flexible SDKs and scalable server orchestration, LiveKit is widely used by developers and enterprise teams to deploy real-time voice and video applications at global scale.
HQ: San Francisco, San Jose, United States • Artificial Intelligence • AI Agents • Speech & Audio AI • Est. 2021
$135k – $300k per year • Equity • Remote (EMEA, North America) • Full-Time
Python
AI/ML
Synthetic Data
PEFT
LiveKit
OpenAI
Post-training
Fine-tuning
Llama
LoRA
Qwen
Reinforcement Learning
SGLang
vLLM
FSDP
GRPO
LLM Evaluation
Marketing
Salesforce
Databricks is an American software company founded in 2013 by the original creators of Apache Spark, Delta Lake and MLflow at the University of California, Berkeley. Its data intelligence platform unifies data engineering, warehousing, governance, analytics and machine learning on a lakehouse architecture that stores open table formats in a customer's own cloud object storage. Headquartered in San Francisco and available on AWS, Azure and Google Cloud, the platform is used by tens of thousands of organisations to build pipelines, dashboards and production AI applications.
HQ: San Francisco, United States • MLOps • Machine Learning • Big Data • Data Engineering • Artificial Intelligence • Data & Analytics • Data Warehousing • 5000+ employees • Est. 2013
Senior • 2+ years exp • In office (Belgrade, Serbia) • Senior
Perplexity AI is an American company that builds an answer engine combining live web search with large language models to return sourced, conversational responses instead of a list of links. Its products span a consumer assistant on web and mobile, the Comet browser, enterprise search over internal documents and the Sonar developer API that exposes the same grounded retrieval stack. Founded in 2022 in San Francisco by former researchers and engineers from OpenAI, Meta and Databricks, the company is backed by NVIDIA, IVP, New Enterprise Associates and SoftBank.
HQ: San Francisco, United States • AI Agents • Internet Services • Artificial Intelligence • Search Engines • LLM & Generative AI • 1001-5000 employees • Est. 2022
Staff+ • 5+ years exp • In office (Belgrade, Serbia, London, United Kingdom) • Full-Time • Staff
LLM
Perplexity
Recommender Systems
Intern • In office (Belgrade, Serbia) • Internship • Intern
Python
Rust
AI/ML
JAX
LLM
Perplexity
PyTorch
RAG
TensorFlow
Recommender Systems
NLP
Analytics
A/B Testing
Staff+ • 5+ years exp • Remote/Hybrid (Belgrade, Serbia, Berlin, Germany, London, United Kingdom) • Full-Time • Staff
Perplexity
RAG
Recommender Systems
Scale your AI or tech business with Lago: event-driven usage metering, hybrid pricing-ready, open-source + cloud — build fast, bill accurately.
HQ: Mexico City, Mexico • Financial Services • Software • Billing & Invoicing • 51-200 employees
Middle • 3+ years exp • Remote (Philippines, Argentina, Brazil, Mexico, Poland) • Middle
Python
SQL
AI/ML
Computer Vision
NLP
NumPy
Pandas
PyTorch
Scikit-learn
TensorFlow
dbt
Embeddings
LangChain
MLFlow
Prompt Engineering
RAG
Spark
Vertex AI
Weights & Biases
Amazon SageMaker
Anthropic
OpenAI
DevOps
AWS
Azure
GCP
3ap is your strategic partner for digitalization. We develop meaningful strategies, MVPS, or first-class, scalable digital solutions together with you.
Zurich • Belgrade • Coupons, Deals & Cashbacks • 51-200 employees
Senior • 5+ years exp • Remote/Hybrid (Belgrade, Serbia) • Bachelor's Degree • Full-Time • Senior
Java
Node JS
Python
TypeScript
JavaScript
Databases
PostgreSQL
Frontend
Angular
Next.js
React.js
Vue.js
DevOps
Docker
Jenkins
Kubernetes
OpenShift
Rest API
QA
Insomnia
Postman
Founded in 2015, Constructor is an AI-powered search and product discovery platform built specifically for enterprise e-commerce businesses. The company utilizes real-time clickstream data and machine learning to deliver personalized product recommendations, site search results, and category browse experiences. By optimizing search outcomes for key retail metrics like revenue and conversion rather than simple keyword matching, it helps major online retailers increase sales and improve customer retention.
HQ: San Francisco, United States • Internet Services • Artificial Intelligence • Commerce • Search Engines • Est. 2015
$80k – $120k per year • Senior • 5+ years exp • Remote (EMEA) • Full-Time • Senior
Python
C++
Go
Rust
Databases
PostgreSQL
Milvus
OpenSearch
pgvector
Qdrant
Weaviate
DevOps
AWS
Azure
GCP
Kubernetes
Platform Engineering
Terraform
Vector
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
At Ionic Partners we believe in the power of people, platforms, and process to transform the world. We envision a global economy that uses businesses as a force for good and creates opportunity for all. Our mission is to create a better, more equi...
Ontario • Kitchener • Venture Capital • Financial Services
Executive • 15+ years exp • Remote (Bulgaria, Czech Republic, Hungary, Poland, Romania) • Full-Time • Architect
C#
SQL
C#
.NET
Databases
MS SQL
AI/ML
Claude
Claude Code
Copilot
Cursor
AI Agents
DevOps
CI/CD
GitHub
Mira Construction is a general contracting and construction management firm that delivers residential, commercial, and institutional building projects. The company provides end-to-end project execution services, including pre-construction planning, site development, structural engineering, and interior finishing. By collaborating closely with architects and property owners, it focuses on delivering quality craftsmanship, cost-effective scheduling, and structural integrity tailored to client specifications.
HQ: Dubai, United Arab Emirates • Science & Engineering • Manufacturing • Civil & Structural Engineering
Lead • Remote (Cyprus, Poland, Serbia, Spain, Georgia) • Full-Time • Staff
Python
C++
C++
PyTorch C++
AI/ML
JAX
NumPy
PyTorch
