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    CO

    Constructor

    Information Technology & Services

    PhD Researcher: AI for Semantic Structures, Reasoning Flows & Personalized Content Generation

    Bremen, GermanyOn-SitePart-timePosted 1mo ago
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    Job description

    About the position

    You are expected to contribute to the development of internationally visible, foundational research in AI-driven semantic structure extraction, automated reasoning-flow modeling, and adaptive content generation. The research focuses on methods for analyzing and representing deep semantic and pedagogical structures in scientific and educational materials; high-fidelity extraction of conceptual and reasoning blocks; inference-time rationale generation; and adaptive, learner-aware sequencing of content. This includes work on semantic parsing, structured NLP, graph-based neural models, metacognitive prompting, ontology alignment across disciplines, and human-in-the-loop optimization.

    In this context, interdisciplinary research is strongly encouraged—particularly collaborations spanning computer science, computational linguistics, cognitive science, and the learning sciences. You will contribute to developing datasets, baseline models, personalized learning engines, reasoning-graph representations, cross-domain mapping algorithms, and RLHF-style feedback loops that improve system interpretability and instructional quality. The successful candidate will also contribute to high-quality publications, release research prototypes, and support demonstrator systems that deliver structured semantic extraction, rationale-aware content generation, and cross-domain transfer of reasoning structures.

    Additionally, the successful candidate is expected to support teaching activities in areas such as Machine Learning, Natural Language Processing, AI in Education, Knowledge Representation, and Python-based analytical seminars at the BSc, MSc, and PhD levels. Responsibilities include assisting in course delivery, advising students, supervising Bachelor/Master theses, and engaging in methodological innovation for online, hybrid, and in-person learning environments. The university provides strong support for early-career researchers, including mentorship, administrative assistance, access to computational resources, conference funding, and opportunities to collaborate with other research groups and industrial partners working at the intersection of AI and digital education.

    Mandatory requirements

    • Master’s or PhD degree in Computer Science, Artificial Intelligence, Machine Learning, Computational Linguistics, or a related field.
    • Strong research interest and practical experience in one or more of the following areas:
      • semantic parsing and structured representation learning
      • knowledge graphs or graph-based reasoning
      • transformer models, sequence modeling, or GNNs
      • natural language generation and explainability
      • educational AI, personalization algorithms, or cognitive modeling
    • Evidence of research potential through publications, a strong thesis, or significant projects.
    • Experience or interest in innovative teaching and learning approaches.
    • Ability to translate theoretical insights into engineered prototypes and systems supporting scientific or educational use cases.
    • Responsible, self-motivated, and capable of working independently as well as collaboratively.
    • Excellent verbal and written communication skills.
    • Intercultural competence and experience in international environments.
    • Fluency with co-pilot tools for coding and writing.
    • Fluency in English, the language of instruction and communication on campus.

    Funding & Appointment Terms

    The appointment provides full financial coverage through a dedicated fellowship, comprising:

    • Monthly stipend of €1,650
    • Monthly research-cost allowance of €100 (Forschungskostenpauschale)
    • Health-insurance subsidy of €100 per month
    • Supplementary €550 mini-job allowance to support parallel part-time employment (optional)

    Application Details

    • Expected start date: September, 2026

    Application package must include:

    • Curriculum Vitae (CV);
    • Academic transcripts ;
    • A detailed letter of motivation outlining research interests and career goals;
    • 2 recommendation letters;

    Applications to be reviewed on a rolling basis. Shortlisted candidates will be invited to interviews.

    Job details are sourced from the employer's original posting.

    Open job posting
    CO

    About the company

    Constructor

    Constructor is the only search and product discovery platform designed exclusively for commerce where conversions matter. Our platform delivers unmatched KPI optimization and fast ROI for enterprise ecommerce brands, retailers, distributors, marketplaces, and more — while giving customers a personalized, enjoyable shopping experience. Unlike other platforms, Constructor is the only search and product discovery solution that was built from the ground up with clickstream data and advanced AI, not merely bolted onto a legacy keyword engine. Consistently outperforming competitors by an average of 3% in A/B tests, Constructor's cloud-based solutions harness the power of natural language processing, machine learning, collaborative personalization, and Generative AI to deliver compelling user experiences across all aspects of product discovery. From search to browsing, recommendations, collections, merchant intelligence, quizzes, attribute enrichment, and AI shopping assistants, Constructor covers the entire discovery journey. Optimizing specifically for ecommerce metrics like revenue, conversion rate and profit, Constructor generates consistent $10M+ revenue lifts for our customers, which include some of the world's most recognized brands, like Sephora, Petco, Bonobos, Target Australia, Birkenstock, The Very Group, and many more. Constructor was named a Strong Performer in The Forrester Wave™ for Commerce Search And Product Discovery, Q3 2023, and a Visionary in the First-Ever Gartner Magic Quadrant for Search and Product Discovery. Constructor also recently received multiple G2 Fall 2024 badges—including 'Leader,' 'High Performer for Enterprise,' and 'Best Support.' Learn more at constructor.com.

    View all Constructor jobsLinkedIn
    Industry
    Information Technology & Services
    Founded
    2015
    Open roles
    67

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