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)
SupportYourApp is an international customer support outsourcing company headquartered in Wilmington, Delaware, with a strong operational presence in Ukraine and across Europe. Founded in 2010, the company provides 24/7 multi-channel, multilingual customer service, technical support, and desk solutions tailored primarily for tech startups, SaaS providers, and global enterprises. Through secure, ISO-certified practices and AI-enhanced workflows, the firm enables growing businesses to scale their user engagement and retention globally.
HQ: Kyiv, Ukraine • Professional Services • IT Outsourcing • Technical Support • Est. 2010
Junior • 1+ year exp • Remote (Bulgaria) • Contractor • Junior • French: B2
São Paulo • Remote (Argentina, Brazil, Bulgaria, Colombia, Morocco) • Contractor • English: B2
Lisbon • Remote (Bulgaria, Croatia, Romania, Serbia, Portugal) • Contractor
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
LucidLink is a cloud file streaming and data management technology enterprise headquartered in San Francisco, California, with major R&D operations in Sofia, Bulgaria. Founded in 2016 by Peter Thompson and George Dochev, the venture-backed firm has raised over $90 million from investors including Bright Pixel Capital, Headline, and Baseline Ventures.
HQ: San Francisco, United States • Information Technology • Cloud Computing • Internet Services • Cloud Storage & File Sharing • Est. 2016
Equity • Staff+ • In office (Sofia, Bulgaria) • Full-Time • Staff
CI/CD
Shift-Left
Cybersecurity
Shift-Left Security
Equity • Senior • In office (Sofia, Bulgaria) • Full-Time • Senior
Equity • Senior • In office (Sofia, Bulgaria) • Full-Time • Senior
Entain Careers is the global recruitment portal for Entain plc, one of the world's largest sports betting and gaming groups, which powers iconic brands like Ladbrokes, Coral, bwin, and PartyPoker. The site serves as a centralized hub for prospective employees to discover job opportunities spanning technology, data analytics, corporate operations, and customer service across international offices.
Northampton • London • Dublin • Norwich • Bradford • Sports • Gaming • Sports Betting • iGaming & Gambling • 5000+ employees
Remote/Hybrid (Sofia, Bulgaria) • Full-Time • Junior
$58k per year • Senior • 5+ years exp • Remote/Hybrid (Sofia, Bulgaria) • Full-Time • Senior • English
C++
Java
PHP
Python
C#
C#
ASP.NET Core
up to $47k per year • Staff+ • 2+ years exp • Remote/Hybrid (Sofia, Bulgaria) • Full-Time • Senior • English
AI Agents
Model Context Protocol
DevOps
SLI/SLO/SLA
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
Founded in 1998, GTT Communications, Inc. is a multinational telecommunications and internet provider company. The company is headquartered in McLean, Virginia.
Pune • Sofia • Prague • Nottingham • London • ISP • Telecom Infrastructure • Telecommunications • 501-1000 employees
Junior • 2+ years exp • Remote/Hybrid (Sofia, Bulgaria) • Full-Time • Junior
Junior • 1+ year exp • Remote/Hybrid (Sofia, Bulgaria) • PhD • Full-Time • Junior
Remote/Hybrid (Sofia, Bulgaria) • Full-Time
HP Inc. is a American multinational technology company specializing in personal computing, printing systems, and 3D printing solutions. Formed in 2015 following the corporate split of the original Hewlett-Packard Company, it manufactures a broad portfolio of consumer and enterprise products, including laptops, desktop PCs, workstation displays, and commercial printers.
HQ: Palo Alto, United States • Consumer Electronics • Printers & Scanners • Laptops • 5000+ employees
Lead • 2+ years exp • Remote/Hybrid (Sofia, Bulgaria) • Relocation • Master's Degree • Full-Time • Staff • English: C1
Lead • 1+ year exp • In office (Sofia, Bulgaria) • Relocation • Master's Degree • Full-Time • Staff • Spanish • English
Supabase is an open-source backend-as-a-service company headquartered in San Francisco, California, and founded in 2020. The company provides a suite of development tools built on top of PostgreSQL, including database management, user authentication, edge functions, real-time data synchronization, and vector storage for machine learning applications. Operating as a remote-first organization, it serves a global community of developers and enterprises by offering a scalable alternative to proprietary cloud platforms through its integrated suite of open-source technologies.
HQ: San Francisco, United States • Machine Learning • Artificial Intelligence • Cloud Computing • Mobile App Development • Software • Web Development • Information Technology • Database Management • 201-500 employees • Est. 2020
≈ $149k – $249k per year (Estimated) • Equity • Lead • Remote • Full-Time • Staff
PostgreSQL
Supabase
DevOps
Grafana
SLI/SLO/SLA
Vector
Management
Notion
Marketing
HubSpot
Equity • Remote • Full-Time
JavaScript
TypeScript
Databases
PostgreSQL
Supabase
Frontend
Next.js
React.js
Svelte
Vue.js
≈ $91k – $208k per year (Estimated) • Equity • Senior • 5+ years exp • Remote • Full-Time • Senior
JavaScript
Rust
TypeScript
Databases
PostgreSQL
Redis
Supabase
AI/ML
Model Context Protocol
Frontend
WebAssembly
DevOps
AWS
Cloudflare
Kubernetes
OpenTelemetry
WebSockets
Management
Slack
Softtek is a Mexican technology company founded in 1982 and headquartered in Monterrey. It provides software development, digital transformation and managed services worldwide. The company pioneered the nearshore delivery model from Latin America.
HQ: Monterrey, Mexico • Information Technology • 1001-5000 employees • Est. 1982
≈ $50k – $106k per year (Estimated) • Junior • 2+ years exp • Remote • Junior • Spanish: C1
PowerShell
DevOps
Azure
Incident Management
SLI/SLO/SLA
Splunk
Vector
Cybersecurity
Darktrace
Microsoft Entra ID
MITRE ATT&CK
Smartsheet is a leading enterprise work management platform that enables organizations to plan, track, automate, and report on work at scale. Combining the familiarity of spreadsheets with powerful features like automated workflows, dynamic dashboards, and project tracking tools, it enhances team collaboration and operational efficiency.
HQ: Bellevue, United States • Software • Productivity Software • Project Management • Est. 2005
Middle • 3+ years exp • Remote (Bulgaria) • Middle
Java
Kotlin
Objective-C
Swift
Java
RxJava
AI/ML
AI Agents
Mobile
Clean Architecture
JUnit
Management
Smartsheet
Senior • 4+ years exp • Remote (Bulgaria) • Senior
AI Agents
Management
Smartsheet
≈ $82k – $187k per year (Estimated) • Senior • 5+ years exp • Remote (EMEA, United States) • Bachelor's Degree • Senior
AI Agents
DevOps
SLI/SLO/SLA
Cybersecurity
GDPR
ISO 27001
SOC 2
Management
Smartsheet
OKX is a global cryptocurrency exchange and digital asset platform. It offers spot, margin, futures, and options trading, plus a Web3 wallet, DeFi access, and NFT features. The company has positioned itself as a broad crypto ecosystem for both beginners and advanced traders.
HQ: San Jose, United States • HQ: Dubai, United Arab Emirates • Blockchain & Crypto • Cryptocurrencies • Crypto Exchanges • 1001-5000 employees • Est. 2017
Middle • 4+ years exp • Lisbon • Remote (EMEA) • Contractor • Middle • Dutch: C1 • French: C1 • German: C1
Executive • 10+ years exp • Remote (EMEA) • Architect
Sopra Steria Poland is the Polish subsidiary of the European IT and consulting group Sopra Steria. It delivers information technology services including software development, consulting, and business process support for clients in various economic sectors.
HQ: Warsaw, Poland • Software • Information Technology • IT Consulting • 5000+ employees
Senior • Remote/Hybrid (Sofia, Bulgaria) • Full-Time • Senior • German
Middle • Remote/Hybrid (Sofia, Bulgaria) • Full-Time • Middle • German (Optional)
Python
Python
FastAPI
Poetry
Ruff
Databases
pgvector
Pinecone
Weaviate
PostgreSQL
AI/ML
AI Agents
Copilot
Cursor
LangChain
Langfuse
LangGraph
LlamaIndex
LLM
MLFlow
RAG
Vertex AI
Anthropic
LLM Guardrails
OpenAI
Structured Outputs
A2A
Model Context Protocol
DevOps
Rest API
Vector
GitHub
CI/CD
Docker
GitHub Actions
GitLab CI
Kubernetes
GitLab
SportyBet is an international sports betting, gaming, and digital entertainment platform owned by Sporty Group. Founded by Sudeep Ramnani in 2013, the platform is a market-leading sports betting operator in Africa - with operations across Nigeria, Ghana, Kenya, Zambia, Tanzania, and Uganda - and has expanded internationally into markets like Brazil.
HQ: London, United Kingdom • Gaming • Sports • iGaming & Gambling • Sports Betting • Est. 2013
≈ $50k – $123k per year (Estimated) • Middle • 3+ years exp • Remote (Europe) • Middle
JavaScript
Mobile
AppsFlyer SDK
Cybersecurity
GDPR
Analytics
A/B Testing
Marketing
GA4
Google Ads
Meta Ads
TikTok Ads
≈ $77k – $170k per year (Estimated) • Senior • 3+ years exp • Remote (EU) • Bachelor's Degree • Senior
Python
Databases
MongoDB
MySQL
DevOps
CI/CD
Docker
Jenkins
Kubernetes
Rest API
AWS
Management
Jira
QA
Chrome DevTools
Playwright
Postman
Selenium
Appium
≈ $28k – $147k per year (Estimated) • Middle • 4+ years exp • Remote • Middle
Java
Node JS
JavaScript
TypeScript
Frontend
Angular
NgRx
React.js
Redux
Sass
Vue.js
Vuex
Webpack
Vue Router
Mobile
State Management
DevOps
Git
AWS
Jenkins
Kubernetes
QA
Playwright
Synthesia is an AI video generation platform that enables users to create professional, studio-quality videos from plain text scripts without needing traditional cameras or film crews. The platform utilizes hyper-realistic digital avatars and natural synthetic voice models to deliver localized video content across dozens of languages in minutes. Widely adopted by corporate enterprises, Synthesia streamlines corporate training, customer onboarding, and internal communications at scale.
HQ: London, United Kingdom • Software • Artificial Intelligence • Generative Video • Video & Image Processing Software • 51-200 employees • Est. 2017
≈ $93k – $236k per year (Estimated) • Senior • Remote (Europe) • Full-Time • Senior
Python
AI/ML
DeepSpeed
Diffusion Models
PyTorch
FSDP
CUDA
CUDA Toolkit
DevOps
CI/CD
Datadog
AWS
Docker
SLURM
GitHub
Design
Webflow
Management
Miro
Remote (Europe) • Full-Time
Python
AI/ML
AI Agents
LLM
DevOps
Datadog
GitHub Actions
Kubernetes
Terraform
GitHub
Design
Webflow
Management
Miro
≈ $136k – $298k per year (Estimated) • Staff+ • Remote (Europe) • Full-Time • Staff
Fine-tuning
Knowledge Distillation
Multimodal AI
PyTorch
Tokenization
DPO
Post-training
Time Series Forecasting
Diffusion Models
DevOps
Datadog
Design
Webflow
Management
Miro
Speechify is a voice AI productivity company best known for its text-to-speech app. It lets users listen to articles, PDFs, books, and web pages, and also offers voice typing, AI summaries, and AI podcasts. The company was founded in 2017 and is centered on accessibility and productivity.
HQ: Miami, United States • Education • AI Agents • Artificial Intelligence • 5000+ employees
$30k – $55k per year • In office (Sofia, Bulgaria) • PhD
Swift
AI/ML
Text-to-Speech
Mobile
Fastlane
SwiftUI
DevOps
CI/CD
Git
Vercel
$30k – $55k per year • Senior • In office (Sofia, Bulgaria) • Senior
Kotlin
Java
Mobile
Kotlin Multiplatform
DevOps
GCP
$30k – $55k per year • In office (Sofia, Bulgaria) • PhD
Text-to-Speech
DevOps
AWS
Azure
Docker
GCP
Kubernetes
Vercel
UP Education is a major private dual-sector tertiary education provider operating across New Zealand and Australia. Headquartered in Auckland, the group delivers higher education degrees, vocational education and training (VET), and university preparation pathway programs across a regional network of over 60 campuses alongside online platforms.
HQ: Auckland, New Zealand • Education
New Zealand • Remote • Full-Time • Junior • English
AWS
Kali Linux
Splunk
Cybersecurity
Burp Suite
Microsoft Sentinel
Nmap
Wireshark
CloudLinux is on a mission to continually increase security, stability and availability of Linux servers and devices. Headquartered in Palo Alto, California, CloudLinux Inc. develops a hardened Linux distribution, Linux kernel live security patchi...
HQ: Prague, Czech Republic • Information Technology • Cybersecurity • Operating Systems
≈ $57k – $130k per year (Estimated) • Madrid • Remote (Bulgaria, Serbia, Spain, Portugal) • English
Go
Python
Rust
PHP
PHP
WordPress
Databases
ClickHouse
AI/ML
AI Agents
Dagster
LLM
Prefect
Human-in-the-Loop
LLM Guardrails
LLM Evaluation
DevOps
CI/CD
Docker
GitLab CI
Grafana
Prometheus
Amazon S3
GitLab
Ansible
Configuration Management
Progressive Delivery
Puppet
Cybersecurity
ModSecurity
Analytics
ETL/ELT
≈ $61k – $120k per year (Estimated) • Lead • Warsaw • Remote (Bulgaria, Poland, Romania, Serbia, Armenia) • Staff
Python
Rust
Databases
ClickHouse
AI/ML
Time Series Forecasting
Claude
AI Agents
Model Context Protocol
DevOps
Alertmanager
Ansible
Configuration Management
Error Budget
GitLab CI
Grafana
Jenkins
Kubernetes
Prometheus
SLI/SLO/SLA
GitLab
eBPF
OpenTelemetry
Cybersecurity
ISO 27001
SOC 2
QA
Sentry
Sofia • Remote (Brazil, Bulgaria, Czech Republic, Romania, Spain) • Full-Time
Node JS
PHP
JavaScript
PHP
WordPress
AI/ML
LLM
Cybersecurity
Defense in Depth
