H Company

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👥 251-500💰 $169,509,482 Grant 6 months ago🫂 Last layoff 10 months agoArtificial Intelligence (AI)Machine Learning Generative AI Natural Language Processing

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🔥 Senior Full-stack Engineer

Posted 2 days ago

📍 France, UK, US

🧭 Full-Time

🔍 AI

🔧 Requirements

Strong 4+ years of experience in Python backend development (Flask, Django, FastAPI or similar) and HTML5, CSS3, JavaScript, React/Redux (ideally) or similar frameworks on the front-end
Proven ability to design and build REST or gRPC APIs
In-depth experience with distributed systems or cloud computing, preferably in AWS
Expertise in relational and/or non-relational databases
Experience working with message queueing technologies (SQS/RabbitMQ/Kafka/etc.)
Experience with browser security and cross-browser compatibility techniques
Good understanding of coding standards, architectural patterns and test frameworks
Expertise in instrumentation, observability and monitoring
Experience with CI/CD pipelines, local development via Docker and build/package tooling

💡 Responsibilities

Design and implement secure, robust and scalable services via REST/gRPC
Handle database interactions, including schema design, querying, and optimization
Integrate third-party APIs and services
Implement integration and end-to-end tests to ensure code quality
Develop responsive web interfaces and connect them to backend APIs
Set up and maintain continuous integration and deployment workflows
Ensure application reliability via logging/monitoring/alerting
Follow best practices to avoid vulnerabilities and adhere to industry standards

AWSBackend DevelopmentDockerPostgreSQLPythonSQLDjangoFlaskFrontend DevelopmentHTMLCSSJavascriptReact.jsAPI testingFastAPIgRPCREST APIReduxReactCI/CD

Posted 2 days ago

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🔥 Member of technical staff (Models)

Posted 2 days ago

📍 France, UK, US

🧭 Full-Time

🔍 AI

🔧 Requirements

Strong programming skills (Python, Git)
Expertise in deep learning frameworks (PyTorch, JAX, TensorFlow)
Experience with large-scale distributed training of LLMs and VLMs
Hands-on experience with LLM training, alignment, and reinforcement learning
Knowledge of multimodal architectures and applications
Publications in top-tier AI conferences (e.g., NeurIPS, ICML, CVPR, ACL, ICCV)
Advanced degree (PhD or MSc) in a relevant field (e.g., ML, DL, NLP, CV)

💡 Responsibilities

Develop and train advanced LLMs and VLMs, including multimodal architectures
Research and implement training methods for enhanced capabilities like instruction following and tool use
Design and optimize data pipelines and training systems for large-scale distributed training
Collaborate with cross-functional teams to integrate models into agentic AI systems
Evaluate model performance and communicate findings to stakeholders
Stay current with advancements in LLMs, VLMs, and related fields

PythonGitMachine LearningPyTorchAlgorithmsData StructuresTensorflowResearch skills

Posted 2 days ago

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🔥 Member of technical staff (Infrastructure)

Posted 2 days ago

📍 France, UK, US

🧭 Full-Time

🔍 AI

🔧 Requirements

Proficient in Python, Git, Docker
Containerization and Orchestration
Debugging and Problem-Solving
Expertise in debugging issues with code and Linux
Deep familiarity with AWS services
Skilled in Observability and Monitoring tools and practices
Adept in setting up and managing CI/CD pipelines
Experienced in Incident Response protocols and best practices

💡 Responsibilities

Design and manage the infrastructure required by H’s engineers and researchers
Collaborate with other teams to ensure they have the optimal infrastructure for their role
Leverage automation to multiply your impact and help other teams
Develop tools and solutions aimed at increasing the efficiency of other teams
Deploy and scale applications in the cloud

AWSDockerPythonGitCI/CDLinuxDebugging

Posted 2 days ago

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🔥 Member of technical staff (Inference)

Posted 2 days ago

📍 France, UK, US

🧭 Full-Time

🔍 AI

🔧 Requirements

MS or PhD in Computer Science, Machine Learning or related fields
Proficient in at least one of the following programming languages: Python, Rust or C/C++
Experience in GPU programming such as CUDA, Open AI Triton, Metal, etc.
Experience in model compression and quantization techniques

💡 Responsibilities

Develop scalable, low-latency and cost effective inference pipelines
Optimize model performance: memory usage, throughput, and latency, using advanced techniques like distributed computing, model compression, quantization and caching mechanisms
Develop specialized GPU kernels for performance-critical tasks like attention mechanisms, matrix multiplications, etc.
Collaborate with H research teams on model architectures to enhance efficiency during inference
Review state-of-the-art papers to improve memory usage, throughput and latency (Flash attention, Paged Attention, Continuous batching, etc.)
Prioritize and implement state-of-the-art inference techniques

PythonMachine LearningAlgorithmsRust

Posted 2 days ago

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🔥 Member of technical staff (Evaluations)

Posted 2 days ago

📍 France, UK, US

🧭 Full-Time

🔍 AI

🔧 Requirements

MS or PhD in Computer Science, Machine Learning or related fields
Proficient in Python
Significant experience in web development

💡 Responsibilities

Collaborate with other teams to gather the needs in terms of environments to build
Create benchmarks that reflect the problems agent face
Define metrics that match business use cases
Gather insights from benchmark to define the critical ameliorations to bring to the LLMs and agents

PythonData AnalysisMachine LearningAlgorithmsData StructuresRESTful APIs

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🔥 Member of technical staff (Data Research)

Posted 2 days ago

📍 France, UK, US

🧭 Full-Time

🔍 AI

🔧 Requirements

Strong, polyvalent programming skills in Python covering parallel computing, system design, large-scale deployments, AWS deployments and model evaluations
Experience developing and maintaining multimodal data pipelines
Experience in training and deploying LLMs, VLMs or Pytorch models
MSc or PhD in machine learning, computer vision, natural language processing, or a related field
Deep understanding of training and evaluation paradigms for multimodal models

💡 Responsibilities

Develop and implement cutting-edge data strategies to improve the performance, efficiency, and applicability of LLMs, VLMs and Action Models
Generate and augment synthetic multimodal datasets, including images, text, and action trajectories, to advance model capabilities in areas like VQA, agent behaviors, and virtual navigation
Apply model distillation techniques to optimize large-scale models for edge deployment, ensuring scalability without compromising performance
Design and iterate on evaluation frameworks to target edge cases and measure model improvements across multiple domains
Lead research into aligning data with human and AI preferences, implementing feedback loops to refine agent decision-making and learning behaviors
Collaborate effectively with cross-functional teams to integrate data-driven solutions into LLM, VLM and Agent systems
Stay at the forefront of breakthroughs in AI data strategies, model distillation, and multimodal learning through active scientific exploration

AWSPythonCloud ComputingData AnalysisMachine LearningPyTorchData scienceData StructuresRESTful APIsResearch skillsData modelingScripting

Posted 2 days ago

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🔥 Finance Manager

Posted 2 days ago

📍 France, UK, US

🧭 Full-Time

🔧 Requirements

At least 4 years of experience, ideally in a startup, SME, or a consulting/audit firm (e.g., Big 4)
Advanced proficiency in Excel and financial tools
Solid knowledge of accounting and treasury management
Fluent English is mandatory
Autonomous, detail-oriented, and proactive
Analytical mindset with the ability to move seamlessly between strategy and execution
Excellent interpersonal skills to work with diverse stakeholders (internal and external)
Team player with the ability to collaborate effectively across departments
Proactive and results-oriented attitude and a strong level of curiosity
Demonstrated ability to thrive in a fast-paced start-up environment

💡 Responsibilities

Prepare and analyze monthly financial reports (P&L, Balance Sheet, Cash Flow) to identify variances and recommend corrective actions
Lead the annual budgeting process and rolling forecasts in collaboration with operational teams
Develop dashboards and KPI tracking tools to drive informed decision-making
Oversee and verify day-to-day expenses and payroll processes in coordination with HR and finance tools
Manage client and supplier invoices, ensuring optimal debt collection strategies
Negotiate with suppliers to optimize costs and maintain positive relationships
Contribute to monthly financial closings by accounting for provisions, depreciation, and other journal entries
Act as the primary contact for accountants, auditors, and legal advisors
Ensure the quality and compliance of accounting data for internal and external audits
Monitor and optimize cash flow and financial transactions
Prepare documentation for financing operations (equity, loans, grants) and manage related processes (data rooms, etc.)
Identify and implement initiatives to automate reporting and streamline financial processes
Provide innovative solutions to simplify and secure financial operations

Financial ManagementMicrosoft ExcelAccountingReportingBudgetingData visualizationFinancial analysisBudget management

Posted 2 days ago

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