Onectus

/ TEAMS · Specialist engineering · RAG / Search

Hire RAG / Search engineers for production systems.

Source engineers experienced in Retrieval, hybrid search, ranking, corpus updates and evidence-grounded answers. for business-critical production systems, safe integrations and measurable technical ownership.

2,000+ engineers in our active talent network · Regional recruiters

/ SYSTEM STACK

ARCHITECTURE01

retrieval evaluation

IMPLEMENTATION02

embeddings and vector stores

DATA & INTERFACES03

hybrid BM25 search

RELIABILITY04

document chunking

OPERATIONS05

reranking

/ AVAILABLE TO HIRE

Specialist engineering profiles.

Profiles show the experience we can source. Individual candidate availability is confirmed after enquiry.

Jelena R.

RAG

Senior RAG / Search Engineer

Available

14+ years of experience · Serbia

RAG / Search Engineer with 14 years in production systems, focused on retrieval evaluation and embeddings and vector stores.

retrieval evaluationembeddings and vector storeshybrid BM25 searchdocument chunkingreranking

Languages: Serbian, English C1

Tomas P.

RAG

Mid-level RAG / Search Engineer

Available

3+ years of experience · Lithuania

RAG / Search Engineer with 3 years in production systems, focused on embeddings and vector stores and hybrid BM25 search.

embeddings and vector storeshybrid BM25 searchdocument chunkingrerankinggrounded citation generation

Languages: Lithuanian, English B2+

Katarína S.

RAG

Mid+ RAG / Search Engineer

Available

5+ years of experience · Slovakia

RAG / Search Engineer with 5 years in production systems, focused on hybrid BM25 search and document chunking.

hybrid BM25 searchdocument chunkingrerankinggrounded citation generationretrieval evaluation

Languages: Slovak, English B2+

Luka N.

RAG

Senior RAG / Search Engineer

Inquire availability

7+ years of experience · Croatia

RAG / Search Engineer with 7 years in production systems, focused on document chunking and reranking.

document chunkingrerankinggrounded citation generationretrieval evaluationembeddings and vector stores

Languages: Croatian, English B2+

/ Engineering teams

RAG / Search — Technical sourcing matched to the actual system.

Onectus uses its active engineering network and regional recruiting partners to search against concrete systems, environments and responsibilities. We evaluate practical experience rather than treating a framework mention or certification as proof of delivery. Particular availability and engagement terms are confirmed after an enquiry. For this role, practical knowledge of retrieval evaluation, embeddings and vector stores, hybrid BM25 search helps define the engineering search.

/ Technical specializations

RAG / Search — Six technical capabilities to assess

The right profile depends on your actual architecture, performance constraints, integration boundaries and operational responsibilities.

01 / 06

retrieval evaluation

RAG / Search responsibilities include retrieval evaluation, related embeddings and vector stores, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.

retrieval evaluationhybrid BM25 searchdocument chunking
02 / 06

embeddings and vector stores

RAG / Search responsibilities include embeddings and vector stores, related hybrid bm25 search, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.

embeddings and vector storesdocument chunkingreranking
03 / 06

hybrid BM25 search

RAG / Search responsibilities include hybrid bm25 search, related document chunking, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.

hybrid BM25 searchrerankinggrounded citation generation
04 / 06

document chunking

RAG / Search responsibilities include document chunking, related reranking, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.

document chunkinggrounded citation generationretrieval evaluation
05 / 06

reranking

RAG / Search responsibilities include reranking, related grounded citation generation, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.

rerankingretrieval evaluationembeddings and vector stores
06 / 06

grounded citation generation

RAG / Search responsibilities include grounded citation generation, related retrieval evaluation, clear test coverage and a reliable production handover. Examine the actual tooling and deployment environment.

grounded citation generationembeddings and vector storeshybrid BM25 search

/ Project scenarios

RAG / Search — Production problems the role can address

01

Improve low-recall knowledge search

Improve low-recall knowledge search. Define constraints around retrieval evaluation, map dependencies and test how the proposed implementation behaves under real operating conditions.

02

Build permission-aware retrieval

Build permission-aware retrieval. Define constraints around embeddings and vector stores, map dependencies and test how the proposed implementation behaves under real operating conditions.

03

Diagnose citation and grounding errors

Diagnose citation and grounding errors. Define constraints around hybrid bm25 search, map dependencies and test how the proposed implementation behaves under real operating conditions.

04

Reindex changing document corpora

Reindex changing document corpora. Define constraints around document chunking, map dependencies and test how the proposed implementation behaves under real operating conditions.

/ Practical evaluation

RAG / Search — Evaluate real ownership, not keywords.

A senior engineering interview should surface directly relevant implementation details, debugging history and operational judgment.

  1. 01

    retrieval evaluation

    Describe a production issue involving retrieval evaluation and what evidence led to a fix.

  2. 02

    embeddings and vector stores

    Which decisions around embeddings and vector stores and hybrid BM25 search were you personally accountable for?

  3. 03

    hybrid BM25 search

    Describe a production issue involving hybrid BM25 search and what evidence led to a fix.

  4. 04

    document chunking

    Which decisions around document chunking and reranking were you personally accountable for?

/ Sourcing process

RAG / Search — From system brief to relevant engineering candidates

01 / 04

Clarify production context

Define platform versions, deployment constraints, traffic patterns, required integrations and ownership.

02 / 04

Activate relevant sources

Search the active network and partner channels for platform-specific engineering experience.

03 / 04

Review technical evidence

Discuss real systems, code or configuration decisions, troubleshooting and change control.

04 / 04

Agree on collaboration

Confirm role boundaries, location or remote access, availability, security and interviews.

Profiles, availability and engagement terms are confirmed for each request.

/ Questions

RAG / Search — Questions before hiring

01Can you source RAG / Search engineers with experience in retrieval evaluation?

Yes. Tell us the relevant versions, operational environment and the responsibilities connected to retrieval evaluation. We qualify hands-on experience during each search.

02Can the role cover embeddings and vector stores and hybrid BM25 search?

These can be included when central to the project. We distinguish practical implementation work from general familiarity and ask about failure scenarios and testing.

03How is seniority assessed for RAG / Search?

We look at production decisions, trade-offs, incident diagnosis, code or infrastructure ownership and the ability to explain decisions without relying on a technology checklist.

04How do we start a search for RAG / Search?

Share your architecture, technical constraints, collaboration model and priorities. We can then discuss relevant sourcing channels, evaluation criteria and next steps.

/ Onectus · TEAMS

Describe the systems you operate.

Tell us the technology, production responsibilities, experience level and working model. We'll activate the appropriate engineering sourcing channels.

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