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This job expired on 16/09/2026. It no longer accepts applications.
Software Architect – AI Security Platform
3Pillar
Job description
About the role
You will design and own a sophisticated, multi‑tenant AI security platform that delivers a 7‑stage LLM‑powered control‑generation pipeline. The solution is production‑grade, requiring reproducibility, security, and auditability, and you will guide a small team of AI engineers through high‑level design decisions.
Key responsibilities
- Act as the architecture authority – define the deterministic/AI boundary, multi‑tenant isolation model, and LLM security posture.
- Make baseline architectural decisions in the first week that lock the team’s constraints.
- Own the end‑to‑end delivery using FastAPI, PostgreSQL, AWS Bedrock and ECS Fargate while preventing scope creep.
- Partner with client leadership to translate business and compliance requirements into architectural constraints.
- Evaluate technology trade‑offs such as single‑step AI processing, row‑level security versus application‑layer filtering, and Pydantic validation.
- Identify and mitigate delivery risks, including prompt‑injection surfaces and cross‑tenant isolation defects.
- Define long‑term product roadmap, technical vision, and development strategy.
- Review critical code paths, create architectural decision records, and ensure documentation captures the “why”.
- Lead, mentor, and support the AI engineering team.
Required profile
- Proven ability to lead and mentor a small team of AI engineers.
- Strong decision‑making skills for high‑level architectural challenges.
- Excellent communication with stakeholders to translate business and compliance needs into technical solutions.
Required skills
- Python
- FastAPI
- PostgreSQL
- AWS (Bedrock, ECS Fargate)
- LLM integration and prompt‑injection mitigation
- Multi‑tenant data isolation (Row Level Security)
- Pydantic schema validation
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3Pillar