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Semantic Systems Builder (Ontology & Knowledge Graph)
We are looking for a specialist who will design and evolve the dynamic ontology, knowledge graph, semantic layer, and common vocabulary that become the shared language between data and AI workflows.
Position
- Position: Semantic Systems Builder (Ontology & Knowledge Graph)
- Reports to: CEO (direct report)
- Work type: Full-time / contract (negotiable)
- Location: Jung-gu, Seoul (near Dongdaemun History and Culture Park Station) + Remote available
Who We're Looking For
We are looking for a specialist who will design and evolve the dynamic ontology, knowledge graph, semantic layer, and common vocabulary that become the shared language between data and AI workflows. This role is for someone who sees ontology as an executable system asset, and who understands data consistency and common vocabulary as a long-term advantage.
Key Responsibilities
- Designing ontology models: Design ontology, entity, and relationship models
- Running semantic governance: Operate common vocabulary, schema evolution, and semantic governance
- Connecting the semantic layer: Connect structured and unstructured data into a semantic layer
- Designing retrieval & reasoning systems: Design knowledge-graph-based retrieval, reasoning, and consistency systems
- Defining the shared language: Define the common language between the data model and AI workflows
tech stack
- Semantic Modeling: ontology, knowledge graph, semantic layer, common vocabulary
- Graph / Query: RDF, OWL, SHACL, Cypher, SPARQL, graph databases
- Governance: schema evolution, semantic governance, common vocabulary, data contracts
- Data/Validation: Python pipelines, metadata, validation automation, consistency checks
- AI / Retrieval: knowledge-graph retrieval, reasoning, semantic consistency
Qualifications
- Experience with ontology, knowledge graph, or semantic modeling
- Hands-on experience with multiple tools across RDF, OWL, SHACL, Cypher, SPARQL, or graph databases
- Experience connecting semantic models to real systems and data pipelines
Preferred Qualifications
- Experience with LLM + ontology, neuro-symbolic systems, or metadata platforms
- Experience with enterprise data modeling, schema governance, or data contracts
- Experience with Python-based pipelines or validation automation
special conditions
- Common vocabulary ownership: You will own the semantic foundation for the entity, relation, and schema language used across the organization.
- Executable ontology: You will treat ontology not as a document, but as an executable system asset directly connected to retrieval, reasoning, and consistency.
Hiring Process
Document screening → Online test → 1st interview (working-level team) → 2nd interview → Compensation discussion → Final offer
- Additional interviews or coffee chats may be held depending on the position.
- If necessary, reference checks may be conducted.
Application Materials
- Free-form resume (including career details)
- Portfolio or GitHub profile
ABOUT KYNDOF
The house behind the work
Kyndof is a Seoul brand house behind 2000Archives, womenswear born from an archive of original 2000s garments, and 2000Atelier, a custom stagewear studio for K-pop artists. Design, pattern, sewing and finishing happen under one roof, and what is proven on stage flows into ready-to-wear.
NU ROMANTIC · FW26READY-TO-WEAR · SEOUL2000ArchivesSport Couture.Womenswear built on an archive of original 2000s garments. Not reproduction: prints, proportions and silhouettes, re-cut for now.Low-rise denimCorsetryFootball jerseys
LE SSERAFIM · custom red leather lookCUSTOM STAGEWEAR · SEOUL2000AtelierMade once, for one stage.Custom stagewear for K-pop artists and touring musicians. Leather sets, tailoring, faux fur, crystal fringe: each piece is made once, for a specific stage and artist.In-house designersOwn sewing factoryMaster sample makerWORKING AT KYNDOF
Make clothes for world-tour stages.From BLACKPINK at Tokyo Dome to JENNIE’s solo stage, what leaves this studio is seen by audiences around the world.
From stagewear to seasonal collections.Custom stagewear by 2000Atelier, and seasonal collections and brand collaborations by 2000Archives, all come out of the same Seoul studio.
Watch your sketch become a garment.Designers, pattern makers and a master sample maker share one studio, with printing, sampling and fittings under the same roof.
WORN BYBLACKPINK · JENNIE · aespa · LE SSERAFIM · NewJeans · TWICE · IVE · Stray Kids · BABYMONSTER · RIIZE · XG · YOASOBI · beabadoobee
2025 K-Fashion Audition, Minister of Trade, Industry and Energy Award · Featured in Vogue Korea, W Korea, Harper’s Bazaar Korea, Hypebeast
LIFE AT KYNDOF
Room to focus, and to grow
How we work
- Flexible start between 8 and 10 am
- Remote days for focused work
- Paid leave in 30-minute increments
- A studio with massage chairs and a proper coffee machine
Growth
- Masterclass access, from Anna Wintour to Marc Jacobs
- Courses and books for your work
- Performance incentives and stock option review
Life & family
- Employee discount on 2000Archives
- A half day off on your birthday
- Holiday gifts you choose yourself
- Carnations delivered to your parents on Parents’ Day
Listed for full-time members. For freelance and project work, we walk you through what applies when you join.
You'll fit in if you
- show today's real result before a perfect plan
- fix first and explain later when you get feedback
- care more about “it's out” than “my part's done”
You won't fit in if you
- want set tasks done a set way
- measure your work by how busy you were
- value stability above everything
APPLY
Show us your work.
Send your portfolio with a few answers. We reply with a screening result within five business days.
13F Hyundai City Tower, 20 Jangchungdan-ro 13-gil, Jung-gu, Seoul
Apply
Semantic Systems Builder (Ontology & Knowledge Graph)
Send your résumé and a few answers; we reply with a screening result within five business days.
Prefer email? join@kyndof.com works too.