Senior Machine Learning System Builder

The Position

As a Machine Learning Data Builder you will own the data foundation the team runs on: dataset pipelines, labeling workflows, and data quality. Model quality is bottlenecked by data quality; this role removes that bottleneck. We've had a strong presence in Veszprém for over a decade, and we're now expanding into Budapest, this role is based in our newly opening Budapest office, right at the start of that growth.

You Will Have the Opportunity to

• Build and maintain dataset ingestion, cleaning, and versioning pipelines (training, validation, and held-out evaluation sets)
• Design and operate labeling workflows, including quality control and inter-annotator agreement tracking
• Own dataset testing: coverage analysis, class balance, leakage detection, dataset documentation
• Manage dataset versioning and lineage so every model release traces back to exact training data
• Partner with data science and product engineering teams on data-sharing boundaries and formats

What We Are Looking For

• 3+ years data engineering experience; strong Python and SQL
• Experience with data versioning tools (DVC, LakeFS, or similar) and pipeline orchestration (Airflow, Dagster, or similar)
• Understanding of ML-specific data concerns: train/test leakage, label noise, distribution shift
• Rigor in documentation and reproducibility

Why You'll Love Working Here

• Innovative Environment: Join a team at the forefront of cybersecurity innovation. At OPSWAT, you'll have the opportunity to work with cutting-edge technologies and contribute to solutions that shape the future of cybersecurity.
• Collaborative Culture: We foster a culture of collaboration, where every team member's input is valued. You'll have the chance to work alongside talented individuals who are passionate about cybersecurity and dedicated to making a difference.
• Professional Growth: At OPSWAT, we prioritize the growth and development of our team members. You'll have access to ongoing training and development opportunities to enhance your skills and advance your career in cybersecurity.
• Impactful Work: Join a mission-driven company that is committed to securing the digital world. Your work at OPSWAT will have a meaningful impact on organizations worldwide, protecting critical data and assets from evolving cyber threats.
• Fun and Dynamic Atmosphere: We believe in fostering a fun and dynamic work environment. From team-building activities to social events, you'll have plenty of opportunities to connect with your colleagues and enjoy the journey together.

OPSWAT, a global leader in IT, OT, and ICS critical infrastructure cybersecurity, delivers an end-to-end platform that gives public and private sector organizations and enterprises the critical advantage needed to protect their complex networks, secure their devices, and ensure compliance. Over the last 20 years our commitment to innovative technology has earned the trust of more than 1,700 organizations, governments, and institutions globally, solidifying our role in protecting the world’s critical infrastructure and securing our way of life. 

What You Will Be Doing 

• Lead the training, testing, and optimization of ML models for cybersecurity and malware, owning technical decisions end to end.
• Evaluate and select model architecturesacross classical ML and deep learning, setting the standard for how the team approaches new problems.
• Drive data exploration, feature engineering, and preprocessing across large, structured and unstructured datasets.
• Design and own robust model evaluation pipelines—validation strategies, benchmarking, and performance analysis—and define the best practices others follow.
• Partner with data engineers and threat researchers to raise data quality, feature sets, and model performance.
• Own the deployment, integration, and monitoring of ML models in production, ensuring reliability at scale.
• Define and improve scalable ML workflows and model development lifecycle practices across the team.
• Work with cross-functional teams to translate ambiguous business and product requirements into ML strategy and solutions.
• Mentor junior and mid-level engineers, sharing expertise and raising the technical bar.
• Influence research and product direction for ML in critical-infrastructure security.

What We Need From You 

• Degree in Computer Science, Mathematics, Engineering, AI, or a related field (advanced degree a plus).
• 5+ years of hands-on machine learning experience, including a track record of shipping models to production.
• Deep understanding of ML algorithms, model training, evaluation techniques, and optimization methods.
• Strong Python skills and expertise with common ML libraries (e.g., scikit-learn, TensorFlow, PyTorch).
• Proven experience with data exploration, feature engineering, and working with real-world datasets at scale.
• Strong command of model evaluation metrics and validation strategies.
• Solid experience deploying and integrating ML models into production systems.
• Experience with cloud platforms (AWS preferred).
• Familiarity with MLOps practices and tools.
• Demonstrated technical leadership: mentoring, driving architecture decisions, and setting standards.
• Experience in cybersecurity, malware analysis, or a related security domain is a strong plus.
• Strong problem-solving skills, attention to detail, and a bias toward experimentation.
• Excellent communication and the ability to lead cross-functional collaboration.

The Position

OPSWAT is investing heavily in MetaDefender Cloud and its threat-intelligence platform — multiscanning, adaptive sandbox analysis, our reputation and IOC data, and the filescan.io and metadefender.com community. To turn that technology into ecosystem reach, we are hiring a Technology Alliances Manager to own and build out our ISV program from the ground up, alongside scaling our OEM licensing business.

This is a hands-on, field-facing role for someone who is as comfortable running a business development motion — sourcing, qualifying and closing new partnerships — as they are managing one once it's signed. You will own the ISV program end to end: building the program itself (structure, tiers, enablement and go-to-market), generating and converting a pipeline of new ISV and OEM partners, driving OEM licensing of our engines and threat-intelligence feeds, producing the technical marketing that makes joint solutions real, representing OPSWAT at industry and field events, and managing the licensing and royalty relationships that follow. You will work across Product, Engineering, Threat Intelligence, Sales and Marketing, and be based in the United Kingdom or Romania with the willingness to travel internationally to fully engage our partners and the community.

What You Will be Doing

• Business Development & Pipeline Generation — Proactively identify, prospect and qualify new ISV and OEM opportunities across the cybersecurity and enterprise-software ecosystem. Build and manage a partnership pipeline from first outreach through signed agreement, and represent OPSWAT in early-stage business development conversations that assess strategic fit, technical feasibility and commercial potential.
• ISV Program Ownership & Integrations — Own and build out OPSWAT's ISV and certified-integration program end to end — from program design through execution. Recruit, onboard and grow ISV and technology partners that embed OPSWAT APIs (multiscanning, Deep CDR™ Technology, adaptive sandbox, reputation and IOC data), and own the technical integration lifecycle, program tiers, enablement, documentation and go-to-market as the program's single owner.
• OEM & Data / Feed Licensing — Drive OEM licensing of OPSWAT engines, sandbox and threat-intelligence feeds to other technology vendors. Structure, negotiate and manage licensing and royalty agreements, and own the ongoing commercial relationship — reporting, reconciliation, renewals and growth of each royalty stream.
• Technical Marketing & Field Engagement — Create joint solution briefs, reference architectures, integration guides, demos and webinars. Represent OPSWAT at conferences, partner summits and field events; deliver technical presentations and run partner workshops that move integrations forward.
• Marketplace & Co-Sell — Publish and grow OPSWAT listings on cloud marketplaces (e.g., Microsoft Azure) and drive co-sell motions with strategic platform partners.
• Cross-Functional Leadership — Partner with Product and Engineering to shape the integration roadmap and API/SDK needs, channel partner and market signals back into the product, and align with Sales on partner-sourced and partner-influenced pipeline.
• Program Operations — Define partner-program metrics, track the integration and OEM pipeline, and report on alliance-sourced revenue and royalty performance.

What We Need from You 

• 5+ years in technology alliances, partnerships, ISV/OEM programs, technical business development, or partner/solutions engineering — in cybersecurity or enterprise software
• A track record of hands-on business development — sourcing, qualifying and progressing new partnership opportunities yourself, not just managing accounts that already exist
• A proven track record building or scaling an ISV or OEM / technology-partner program end to end, ideally as the program's sole or founding owner
• Strong technical fluency: comfortable discussing APIs, SDKs, integrations, cloud deployment and security workflows with partner engineers and architects
• Experience negotiating and managing OEM and licensing agreements, including royalty / revenue-share structures and their ongoing management
• Excellent communication and presentation skills; credible with both partner engineers and executives
• Willingness and ability to travel internationally (~30–50%) for field events, partner meetings and conferences
• Based in, and authorized to work in, the United Kingdom or Romania
• Ownership mindset — drives programs from zero to scale
• Business development instinct — proactively sources and qualifies new opportunities rather than waiting for them to arrive
• Relationship builder — earns trust with partners, engineers and executives alike
• Commercially sharp and technically credible in equal measure
• Thrives in a fast-moving, build-from-scratch environment

It Would be Nice if You Had

• Experience with threat intelligence, malware analysis, sandboxing, or file-security / multiscanning technologies
• Familiarity with cloud marketplaces (Microsoft Azure, AWS) and co-sell programs
• Experience with MSSP / MDR channels or the broader security-vendor ecosystem
• Additional European languages