Senior ML Engineer - Email Security (Remote, Denmark)

Jobgether; Denmark; Remote; DKK 822,000 - 1,121,000; Full time

Benefits offered by this job

Fully Remote Work

Flexible Working Hours

Paid Vacation

Job summary

Jobgether, on behalf of a partner company, seeks a Senior ML Engineer for Email Security, remotely in Denmark. You will train, evaluate, and deploy spam-detection models, build a Go-based inference engine, and improve detection quality while maintaining scalable pipelines for ~5,000 hosting servers.

You will own end-to-end ML delivery—from data preparation and threshold setting to production releases and ongoing optimization—working with a security-focused engineering partner.

Responsibilities

• Train, evaluate, and release spam-detection models, including building and maintaining training corpora, selecting decision thresholds, analyzing precision and recall, and determining whether models are ready for production.
• Develop the production components of a new email-filtering engine in Go, including the inference service, mail-filter integrations, tokenization, and streaming message parsing.
• Investigate customer-reported spam and phishing incidents, trace detection failures, and implement fixes through rules, dataset improvements, or model retraining.
• Balance detection rates against false-positive risks, ensuring legitimate messages are not blocked while malicious content is identified.
• Maintain the corpus management tools and training infrastructure required to support reliable experimentation and model releases.
• Review and approve classifier, rule, and model changes to improve quality, and ensure releases can proceed without depending on a single engineer.
• Help partner engineers understand classification outcomes, explain model scoring behavior, and provide clear technical guidance when questions arise.
• Write technical specifications, handbooks, merge-request descriptions, and post-mortems that make decisions understandable and support effective collaboration.
• Progress toward milestones, including independently shipping a rule-model release during the first month, delivering a component of the new engine to staging by month three, and supporting a model release independently by month six.

Job description

Jobgether, on behalf of a partner company, seeks a Senior ML Engineer for Email Security, remotely in Denmark. You will train, evaluate, and deploy spam-detection models, build a Go-based inference engine, and improve detection quality while maintaining scalable pipelines for ~5,000 hosting servers.

You will own end-to-end ML delivery—from data preparation and threshold setting to production releases and ongoing optimization—working with a security-focused engineering partner.