Senior Software Engineer (RAG Backend Developer)

Some careers have more impact than others.

If you’re looking for a career where you can make a real impression, join HSBC and discover how valued you’ll be.

We are currently seeking an experienced professional to join our team in the role of Senior 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

• Bachelor’s or Master’s 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.

You’ll 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***