Senior Software Engineer (RAG Backend Developer)

Some careers have more impact than others.

If youre looking for a career where you can make a real impression join HSBC and discover how valued youll be.

We are currently seeking an experienced professional to join our team in the role ofSenior Software Engineer.

Business: CTO

Location: Guangzhou

Job ID: 48886

Principal responsibilities

• Backend development & delivery for RAG (incl. Graph RAG & agentic search): Contribute to building RAG backend capabilities including retrieval re-ranking context construction prompt orchestration and response aggregation. Exposure to Graph RAG patterns (e.g. entity/relation extraction basic graph traversal) and agentic search concepts (e.g. multi-step retrieval tool/function calling) is a plus.
• Build pipelines for multi-modal and multi-type data (documents emails wikis images tables logs structured sources) including extraction/OCR chunking enrichment embedding and incremental re-indexing with rollback.
• Retrieval ranking & graph reasoning optimisation: Implement hybrid retrieval (BM25/vector/structured filters) multi-stage recall reranking (cross-encoder/LLM) deduplication/diversity controls and graph-based retrieval strategies to improve relevance explainability and traceability.
• Grounded supported answer generation: Build generation workflows that produce grounded answers with explicit support (citations quoted evidence snippets and source metadata) including answer structuring confidence/scoring signals refusal/insufficient-evidence handling and traceable why this answer outputs for auditability.
• Security & compliance: Implement and maintain security controls such as access control (RBAC/ABAC) data classification/masking audit logging encryption and secrets management. Work with senior engineers and compliance partners to ensure retrieval and generation flows follow bank-grade requirements.
• Data governance & lineage: Support data ownership classification retention and access policies in day-to-day development. Help maintain metadata and basic lineage/provenance (e.g. citations/attribution) so outputs are grounded in approved sources.
• Quality evaluation & continuous improvement: Establish offline/online evaluation (groundedness faithfulness citation coverage latency) enabling A/B testing and regression validation.
• Cross-team collaboration: Partner with AI Infra data platforms information security and product teams to land RAG capabilities in multiple systems and continuously evolve the platform.

Requirements

• Bachelors or Masters degree in Computer Science Software Engineering or a related technical discipline.
• 3 years of backend engineering experience; strong proficiency in at least one mainstream backend stack: Python (FastAPI) or Go.
• Familiarity with core RAG components and patterns including chunking embeddings hybrid search reranking context window management citations/attribution and evaluation.
• Practical experience or strong familiarity with containerisation and cloud-native engineering (Docker Kubernetes CI/CD). Able to support troubleshooting and performance optimisation tasks with guidance.
• Strong communication and collaboration skills with the ability to deliver under tight timeline.

Youll achieve more when you join HSBC.

HSBC is an equal opportunity employer committed to building a culture where all employees are valued respected and opinions count. We take pride in providing a workplace that fosters continuous professional development flexible working and opportunities to grow within an inclusive and diverse environment. We encourage applications from all suitably qualified persons irrespective of but not limited to their gender or genetic information sexual orientation ethnicity religion social status medical care leave requirements political affiliation people with disabilities color national origin veteran status etc. We consider all applications based on merit and suitability to the role. /WX

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***Issued By HSBC Software Development (GuangDong) Limited***