Exploring Different Roles in the LIS Profession

Walk into any library and you will see books neatly arranged on shelves, a catalogue you can search in seconds, and a librarian ready to point you in the right direction. What you do not see is the network of specialists working behind that smooth experience. The LIS profession is not a single job. It is a collection of distinct roles, each demanding its own skills, and together they keep the flow of information organised, retrievable, and accessible. Understanding these categories helps you see librarianship as a serious knowledge profession rather than a desk job. Let us break down the main categories of LIS professionals and what each one actually does.

Organizing information: administrators, classifiers, and cataloguers 🔗

The foundation of any library rests on three roles that bring order to a collection. Without them, a library would simply be a storeroom of books with no way to find anything. These professionals decide how materials are grouped, described, and managed so that everything has a logical place.

Library administrators 🔗

The library administrator, often the chief librarian, runs the entire system. This person handles planning, budgeting, staffing, and policy. A core duty is preparing and implementing the library’s annual budget, along with overseeing the selection, acquisition, classification, and maintenance of documents. In academic institutions, administrators work with university governance to align library services with educational goals. In public systems, district-level administrators coordinate with local government bodies to keep libraries useful to their communities. Most administrators hold a Master’s degree in Library and Information Science and bring years of professional experience to the role.

Classifiers 🔗

A classifier decides where a document belongs within the library’s organisational scheme. They assign call numbers that group similar materials together, which makes both browsing and retrieval far more intuitive. Classifiers apply established schemes such as the Dewey Decimal Classification (DDC) or the Universal Decimal Classification (UDC). For Indian students, one scheme holds special importance: the Colon Classification, developed by S.R. Ranganathan, widely regarded as the father of library science in the country. His faceted approach to classification influenced systems used across the world and remains a cornerstone of LIS education here.

Cataloguers 🔗

If classifiers decide where a book sits, cataloguers describe what it is. A cataloguer creates, maintains, and organises the bibliographic records of every item in a collection. They analyse each item and produce a standardised descriptive record capturing its content and physical features. These records form the backbone of the library catalogue, allowing retrieval through multiple access points such as author, title, subject, or classification number. Modern cataloguing follows international standards, and the shift from simple inventory lists to structured machine-readable metadata shows how technical this role has become. A well-built catalogue is the difference between finding a resource in seconds and never finding it at all.

Specializing in knowledge retrieval: indexers, reference librarians, and thesaurus designers 🔗

Organising a collection is only half the battle. The other half is helping people retrieve exactly what they need from a growing mass of information. This group of professionals focuses on retrieval, building the tools and providing the human expertise that connect a query to the right answer.

Indexers 🔗

An indexer creates subject indexes and access points that let users find relevant material efficiently. The work involves analysing content and identifying the key concepts a user is likely to search for. This is not mechanical. Indexers need strong linguistic sensitivity to handle synonyms, homonyms, and variant terminology so that access points stay consistent. They regularly consult specialised thesauri and subject heading lists to do this well. In a multilingual setting, indexers face an added layer of complexity, often creating access points across languages so that retrieval works regardless of which term a user chooses. The familiar back-of-book index is the most visible product of this skill, but indexing extends across databases and digital collections.

Reference librarians 🔗

The reference librarian is the most public-facing of these specialists. This professional helps users find information and conduct research, acting as a bridge between a person’s question and the resources that answer it. Effective reference work demands expert search skills, including knowledge of Boolean operators, field searching, and search strategy formulation. A reference librarian must translate a vague information need into a precise search, then evaluate results for relevance and reliability. These human judgements add a depth that automated systems still cannot fully replicate, which is why skilled reference staff remain valuable even in an age of instant search engines.

Thesaurus designers 🔗

Behind precise searching sits a less visible specialist: the thesaurus designer. In information science, a thesaurus is not the word-finding book you use for writing. It is a controlled vocabulary tool that standardises terminology and establishes relationships between concepts. Thesaurus designers build these structures, defining preferred terms, non-preferred terms, broader and narrower terms, and related terms. As the structured arrangement of terms shows, related terms act as additional access points that let users explore connected concepts and find material they might otherwise miss. By bridging how people naturally express their needs and how systems organise knowledge, thesaurus designers improve search precision across databases and digital libraries, especially in specialised subject domains where exact terminology matters.

Adapting to digital transformation: content developers and digital librarians 🔗

The profession has changed dramatically in recent decades. While collection development and maintenance remain important, today’s professionals must navigate a far more complex information ecosystem. Two roles capture this shift most clearly, and both reflect how technology has reshaped what it means to work in libraries.

Content developers 🔗

A content developer creates, organises, and manages the information resources a library offers, increasingly in digital form. This role blends subject knowledge with an understanding of how users consume information online. Content developers prepare web content, learning materials, guides, and curated resource collections that make a library’s holdings genuinely usable. The role reflects a broader trend where libraries are no longer just custodians of physical books but active producers of information products tailored to their users. For students entering the field, this is a reminder that LIS careers now reward writing, digital design, and communication skills alongside traditional library training.

Digital librarians 🔗

The digital librarian manages and organises digital collections, handling tasks such as large-scale digitisation, storage, digital reference services, and the coordination of online search. This specialist also takes on system administration of digital platforms and repositories, plus digital rights management, which means navigating copyright and licensing for electronic content. The role has been described as that of a specialist librarian who acts as a guide along the information superhighway, managing the archive and ensuring access to it.

Nowhere is this role more visible than in major national initiatives. The National Digital Library of India (NDLI), developed by IIT Kharagpur and sponsored by the Ministry of Education, is a single-window search platform that uses metadata to guide learners across the country. As an analysis of the NDLI explains, the platform indexes only educational resources based on their metadata and exposes filters such as subject domain, educational level, and learning resource type, letting users refine their search intent with a precision that general search engines lack. Digital librarians working on such projects deal with real challenges: integrating noisy and diverse metadata from many sources, managing multilingual content, and bridging varying levels of digital literacy among users. Their work sits at the heart of efforts like Digital India and the spread of institutional repositories across universities.

Where the roles overlap 🔗

It is tempting to see these categories as separate boxes, but in practice the lines blur. Many professionals, especially in smaller institutions, perform several roles at once. A reference librarian may also handle cataloguing duties, and a digital librarian may take on content development. This overlap is not a weakness. It reflects the reality that LIS work is built on a shared core of skills, namely organising information, understanding how people search, and connecting users with the right resources. A solid LIS education gives you grounding in all these areas, which is why graduates can move between roles as their careers develop. The specialisations described here are best understood as areas of emphasis rather than rigid, permanent job titles.

Recognising these categories matters for anyone studying the field. Each role demonstrates that librarianship is a knowledge profession with depth, technical demand, and growing relevance in a digital world. Whether your interest lies in the structured logic of classification, the people-facing work of reference service, or the technical frontier of digital libraries, there is a defined path that uses your strengths.

What do you think? Which of these roles fits the way you like to work, and as automated systems handle more retrieval tasks, which human skills do you believe will become harder for machines to replace?

References

1. https://www.oclc.org/en/dewey.html
2. https://www.britannica.com/biography/Shiyali-Ramamrita-Ranganathan
3. https://www.loc.gov/marc/
4. https://libguides.mit.edu/c.php?g=175963&p=1158594
5. https://www.niso.org/publications/ansiniso-z3919-2005-r2010
6. https://www.lisedunetwork.com/thesaurus-construction/
7. https://ndl.gov.in/
8. https://cacm.acm.org/research/national-digital-library-of-india/
9. https://www.digitalindia.gov.in/