Sigma Software
1001-5000 employees
Information Technology and Services
Software Development
IT Consulting
About Sigma Software
Sigma Software is a global software development company that provides a wide range of IT services including custom software development, IT consulting, and product engineering. Founded in 2002, the company serves clients across various industries such as finance, healthcare, telecommunications, and retail. Sigma Software is committed to delivering innovative and high-quality software solutions that help businesses accelerate their digital transformation and improve operational efficiency. With a strong presence in Europe and the US, Sigma Software supports international clients and offers flexible engagement models to meet diverse business needs.
5 days ago
Senior ML Engineer / Data Scientist
Full-time
Senior
Data Scientist
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Description
- Design and develop a self-learning Postlog and Prelog recognition system using modern ML and LLM techniques.
- Build and maintain versioned prompts, evaluation datasets, and few-shot exemplars.
- Apply production-grade LLM practices including schema-constrained extraction, grounding strategies, and low-confidence fallback handling.
- Improve recognition quality and optimize layout and header mapping performance.
- Analyze production failures and enhance prompts, retrieval pipelines, and model behavior.
- Run evaluation pipelines and shadow-mode comparisons against legacy systems and gold datasets.
- Monitor confidence scores, latency, operational quality, and infrastructure costs.
- Develop entity-matching systems for Station, Advertiser, and CreativeID master data and implement confidence scoring, thresholding, and auditability mechanisms.
- Transform human and machine corrections into labeled signals for continuous model improvement, monitor prompt and model drift in production environments, collaborate with Data Engineering teams on ML integration and operationalization, and communicate technical findings to engineering teams and customer stakeholders.
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Benefits
- Fully remote role across Europe / remote work
- Significant ownership and ability to influence production AI systems at scale
- Opportunity to work on high-scale products using modern AI technologies
- Challenging engineering tasks and professional growth opportunities
- Collaboration with global customers and cross-functional teams