PyTorch Jobs in Bucharest.
All active PyTorch roles based in Bucharest.
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Software Developer (GO / Python) for AI Cloud Platform in AI & ML Products team (hybrid)
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At IONOS, the leading European provider of cloud infrastructure, cloud services and hosting services, you will work together with a wide range of teams. We are characterized by open structures, a friendly working culture and flat hierarchies with a strong team spirit. We firmly believe that work and fun are compatible, and offer you the right environment for this. Our constant growth means that we are always looking for new colleagues. Become part of IONOS and grow with us.
Location: Bucharest
About us:
IONOS is the largest cloud hoster in Europe and is setting up the foundation as European Cloud Provider. This includes not just offering storage that can compete with the American hyper-scalers, but that offers the full infrastructure stack, including AI & Machine Learning Products. As the largest hosting company in Europe, we manage more than 8 million customer contracts and host over 12 million domains in our own regional data centers in the US and Europe.
About the team:
The AI & ML Products Development department is responsible for building the platform for ML Services products for IONOS Cloud customers, as well as other companies in the United Internet group.
Our most recent product development features integration of GenerativeAI foundational models, LLMs and others. We run foundational models on prem in our cloud, such as Meta’s Llama, Mistral or StableDiffusion and also VectorDBs and offer them via APIs to our cloud customers.
We are also working with classic ML models for Computer Vision, NLP), audio/voice processing & predictions.
Our team is working with technologies such as HugginFace frameworks, TensorFlow, PyTorch, Keras, vLLM, notebooks, MLflow and others.
On the platform side, technologies: GoLang, Java, Spring Boot, REST APIs, Hibernate, SQL (PostgreSQL and MySQL) and NOSQL (Redis, MongoDB).
We deploy everything to cloud-native Docker / Kubernetes environments, making use of GitHub + Actions, ArgoCD, Prometheus, and other modern cloud technologies.
You will work together with a creative and innovative group of people that love experimenting and learning new things. We are an international team that breaks barriers and solves real customer and business problems.
Main responsibilities:
Would you like to join the AI Technology team at IONOS (1&1 Internet), Europe’s leading cloud and web hosting provider? We are building a platform that provides AI solutions to customers worldwide, from GenAI / LLM inference, to model training, vector databases and much more.
We are looking for a Go Developer with Python knowledge to develop our AI Cloud platform, which provides GenAI and Machine Learning Services to customers in IONOS Cloud.
In this role, you will:
- Develop platform components, services and APIs, that integrate AI / ML services into our cloud products stack;
- Drive cloud-native implementation as part of a cross-functional team responsible for building our AI / ML platform that will provide AI-based products to our cloud customers, as well as internal clients and IONOS Group brands;
- Take part in all phases of development, maintenance and housekeeping of the platform;
- Work closely with Product Owners, Architects to define the best technical solutions that match our product vision;
- Collaborate with an international organization of software developers and AI enthusiasts.
We appreciate:
- Strong programming language in GO / Python, preferably more than one, and ecosystem knowledge with a 4+ years experience, or 7+ years for Senior level;
- Experience with cloud-native environments such as Docker, Kubernetes;
- Very good command of software design patterns and architectural concepts;
- Experience with building RESTful services;
- Ability to take on technical concepts and deliver solution for project initiatives;
- Microservice oriented architecture, performance and scalability concerns;
- Very good OOP and OOD experience;
- Experience with build tools and versioning systems, such as Git/GitHub/Gitlab, Actions, Jenkins, ArgoCD or similar;
- Good written and verbal English skills.
Would be a plus:
- Product-oriented development mindset and a responsible ownership attitude towards software components;
- Previous experience integration AI / ML related solutions;
- Strong understanding of systems resilience, concurrency, and scalability concerns;
- Full-stack development skills are appreciated;
- Knowledge of Machine Learning technologies, working with data and ML models;
- Openness to take new approaches, learn new concepts and technologies;
- An open collaboration approach and transparent communication.
What we offer:
- Access to local/international trainings, development and growth opportunities, including access to e-learning platforms, covering both technical and soft skills areas;
- Modern technologies, product responsibility;
- Flexible work schedule;
- Hybrid work option;
- Medical services package from one of two private providers;
- 25 vacation days per year;
- Substitute days off for public holidays that occur on the weekend;
- Meal tickets;
- Internal referral program;
- Employee anniversary program;
- Team events, networking events organized to promote a passionate, creative and diverse culture;
- Summerfest and Winterfest parties;
- Of course, coffee, soft drinks and fresh fruits are on us in the office.
About IONOS
IONOS is the leading European digitalization partner for small and medium-sized businesses (SMB). The company serves around six million customers and operates across 18 markets in Europe and North America, with its services being accessible worldwide. With its Web Presence & Productivity portfolio, IONOS acts as a 'one-stop shop' for all digitalization needs: from domains and web hosting to classic website builders and do-it-yourself solutions, from e-commerce to online marketing tools. In addition, the company offers Cloud Solutions to enterprises who are looking to move to the cloud as their businesses evolve.
We value diversity and welcome all applications - regardless of, for example, gender, nationality, ethnic or social origin, religion, disability, age as well as sexual orientation and identity, physical characteristics, marital status or any other irrelevant factor subject to applicable law.
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Senior Machine Learning Engineer - Automatic Speech Recognition (ASR)
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About the role:
At Cresta, we are dedicated to building state-of-the-art Machine Learning systems that power real-time, intelligent customer interactions. Our team develops models and platforms that process large-scale, multimodal data—especially speech and text—to extract meaning, improve quality, and deliver actionable insights at scale. By combining applied research with strong engineering discipline, we enable organizations to continuously improve AI-driven experiences in production environments.A key focus of this role is advancing model evaluation, measurement, and quality improvements, with particular emphasis on Automatic Speech Recognition (ASR) and downstream NLP systems. You will design rigorous evaluation frameworks, define quality metrics, and drive systematic improvements to model accuracy, robustness, and reliability. You will work closely with applied researchers, product teams, and platform engineers to ensure that model performance improvements translate into measurable business impact.As a Senior Machine Learning Engineer, you will be at the forefront of applying modern ML and speech/NLP techniques to production systems. Your work will focus on improving ASR quality, building scalable evaluation and benchmarking infrastructure, and enabling continuous model iteration through data-driven insights.
- Design, implement, and maintain evaluation frameworks to measure model accuracy, robustness, latency, and real-world performance across ASR and NLP systems.
- Lead ASR quality improvement efforts, including error analysis, dataset curation, metric definition (e.g., WER and task-specific metrics), and model iteration.
- Analyze large-scale speech and text data to identify failure modes and drive targeted model and data improvements.
- Develop, train, and deploy machine learning models for speech recognition and downstream tasks such as classification, entity recognition, information extraction, and structured insight generation.
- Partner with applied research to translate experimental improvements into production-ready systems.
- Collaborate with product managers, platform engineers, and UX teams to align model quality metrics with customer and business goals.
- Optimize ML pipelines and evaluation workflows to operate efficiently and reliably at scale.
- Establish best practices for model validation, offline/online evaluation, and continuous quality monitoring in production.
- Master’s or Ph.D. in Computer Science, Machine Learning, AI, or a related field.
- 5+ years of hands-on experience building, evaluating, and deploying ML models in production.
- Strong background in speech recognition (ASR), speech processing, or closely related domains.
- Deep experience with model evaluation, benchmarking, and error analysis for ML systems.
- Proficiency with ML frameworks and libraries (e.g., PyTorch, TensorFlow, Hugging Face).
- Solid understanding of modern ML techniques, including transformer-based models and large-scale training.
- Experience building data pipelines and tooling for large-scale experimentation and quality analysis.
- Strong passion for improving real-world AI system quality, with a track record of delivering measurable, production-grade improvements.
Compensation for this position includes a base salary, equity, and a variety of benefits. Actual base salaries will be based on candidate-specific factors, including experience, skillset, and location, and local minimum pay requirements as applicable.
This posting will be used to fill a newly-created role.
We have noticed a rise in recruiting impersonations across the industry, where scammers attempt to access candidates' personal and financial information through fake interviews and offers. All Cresta recruiting email communications will always come from the @cresta.ai domain. Any outreach claiming to be from Cresta via other sources should be ignored. If you are uncertain whether you have been contacted by an official Cresta employee, reach out to recruiting@cresta.ai
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Apply to CrestaAbout the job
The world’s most critical--and at risk--business applications have been neglected for far too long. Onapsis eliminates this blind spot by providing cybersecurity solutions dedicated to business-critical applications. Whether running on premises, in the cloud, or in a hybrid environment, Onapsis helps nearly 30% of the Forbes Global 100 understand the threats and risks across their SAP and Oracle landscapes.
We are seeking a Senior Data Engineer to join our mission-driven team. This role is ideal for experienced data engineers with a proven track record in architecting scalable data pipelines, leveraging cloud technologies, and contributing to high-impact cybersecurity solutions. You will be responsible for building high-performance ETL frameworks, optimizing data platforms, and contributing directly to the enhancement of our customers' threat detection, response, and remediation capabilities.
What you will be doing, your legacy:
You will be working directly with company Principal Engineers evaluating, scoping, proposing, and building features to fulfill business solution requirements to protect our customers. You will play a direct role in laying the technical foundation for a new product offering. Additionally, you will be working with Engineering and DevOps to deliver high-quality products and services while also working closely with security and IT professionals to ensure safe and secure best practices are followed.
Responsibilities:
- Architect and Design Scalable Data Solutions: Design/develop/maintain Data lakehouse solutions (Iceberg/Delta Lake /Hudi) applying industry best practices and structuring / optimizing the data according to data access patterns.
- Data Pipeline Development: Implement ETL/ELT pipelines using cloud technologies (Spark / pySpark / Glue, Kinesis Streams / Iceberg) to load the data into a Lakehouse for both efficient ML processing and UI reporting.
- Implement data models and data processing frameworks (Spark, Kafka, Snowflake) to ingest, transform, and load large datasets into Data Lakehouse techs (Apache Iceberg, Apache Delta Lake or Apache Hudi), ensuring high availability and reliability of data.
- Advanced Data Integration: Develop solutions that integrate multiple data sources into Snowflake or similar data warehouses to enable real-time analytics and reporting across dashboards.
- AI/ML Integration: Collaborate with cross-functional teams to co-develop AI-driven features identifying patterns and anomalies in client data using AI/ML technologies (python).
- Compliance and Security: Ensure compliance with industry standards and secure best practices (SOX, SOC 1/2), by implementing data governance frameworks, monitoring data pipelines, and optimizing cloud database architectures to protect sensitive information.
- Stakeholder Collaboration: Work closely with stakeholders, including analysts, engineers, and product managers, to understand their data needs, propose solutions, and drive data-driven decision-making by delivering actionable insights.
- Data Infrastructure Monitoring: Continuously monitor, troubleshoot, and enhance data pipelines, leveraging CI/CD tools (Docker, Jenkins, GitHub Actions) and orchestrating workflows using Apache Airflow to maintain operational efficiency.
- Leadership and Mentorship: Provide hands-on mentorship and technical guidance to junior engineers, including code reviews and architecture discussions.
- Documentation and Governance: Establish comprehensive documentation for data architecture, governance, and processes to ensure scalability, compliance, and security.
Qualifications:
- 5+ years of proven experience as a Data Engineer or in a similar role with a deep understanding of data architecture and cloud-based ETL/ELT frameworks.
- Strong experience with AWS (preferably) or Azure , particularly with Glue, EMR, S3, Lambda. Databricks, Snowflake, Synapse experience is a bonus.
- Proficiency in big data technologies such as Apache Spark, Kafka, Hadoop, and Databricks for distributed data processing.
- Proficiency with Python libraries for data processing and ML (e.g., Pandas, NumPy, Polars, Scikit-learn, PyTorch, TensorFlow).
- Hands-on experience in building real-time data processing and AI/ML-driven analytics solutions (SageMaker, Bedrock, NLP, Power BI).
- Ability to architect and manage data lakehouse solutions (Iceberg / Delta Lake / Hudi) or classic warehouse solutions (Redshift, Snowflake).
- Familiarity with compliance and audit requirements (SOX, SOC 1/2, GDPR) and implementing data governance and security frameworks.
- Strong problem-solving skills with a focus on data integrity, scalability, and performance optimization.
- Experience with CI/CD tools (Jenkins, GitHub Actions, Docker) and data orchestration platforms (Apache Airflow).
Preferred Qualifications:
- Experience with advanced data architecture principles (medallion architecture, materialized views, task scheduling).
- Experience using BI tools (e.g., Power BI, Tableau) for real-time analytics and operational reporting
What we offer:
- A role in shaping the future of protecting the most critical applications that run the world's business and a career that grows as the company grows.
- A unique culture of high achievement and teamwork.
- Supportive and humble colleagues are the space's top problem solvers and innovators.
- Financial security through competitive compensation and incentives.
Location: Onapsis is established a new development center in Bucharest. This is a hybrid role (1-2 days per week from the office), so candidates must be commutable to Bucharest every week.
About Onapsis:
Onapsis protects the business applications that run the global economy. The Onapsis Platform delivers vulnerability management, change assurance, and continuous compliance for business applications from leading vendors such as SAP, Oracle, and others. The Onapsis Platform is powered by the Onapsis Research Labs, the team responsible for the discovery and mitigation of more than 1,000 zero-day vulnerabilities in business applications.
Onapsis is headquartered in Boston, MA, with egional offices in Heidelberg, Germany; Buenos Aires, Argentina; Texas, USA, and now in Bucharest, Romania; and proudly serves hundreds of the world’s leading brands, including close to 30% of the Forbes Global 100, six of the top 10 automotive companies, five of the top 10 chemical companies, four of the top 10 technology companies, and three of the top 10 oil and gas companies.
For more information, connect with Onapsis on LinkedIn or visit https://www.onapsis.com.
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#LI-Hybrid
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