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Senior Full-Stack Software Engineer (AI / SaaS) – Open for Qatar Residents Only

TQAY - Tech, Quality & YouDoha, Ad-Dawhah, Qatar

1 day ago

Job description

ROLE SUMMARY

Own end-to-end product development across frontend, backend, data, and cloud. Implement secure OAuth integrations (Meta / WhatsApp), build RAG / search services, and deliver multi-tenant SaaS with strong security, observability, and documentation.

Responsibilities

Ship features from spec → production with tests, telemetry, and docs
Design secure REST / GraphQL APIs; implement RBAC / ABAC and audit trails
Implement OAuth 2.0 (Auth Code + PKCE), webhooks, token rotation
Build Omni-chat integrations : WhatsApp Business API, IG / FB Messenger
Model data in Postgres; performance tuning, migrations, indexing
Deploy on secure private servers / VPC (on-prem or cloud), automate CI / CD
Operate with reliability in regulated environments (logs, SLOs, incident runbooks)

Tech Stack

Frontend : React / Next.js, TypeScript, Tailwind, shadcn / ui, i18n (EN / AR)

Cloud / DevOps : Vercel / AWS, Docker, GitHub Actions, Sentry / observability, IaC basics

Integrations : Meta OAuth / PKCE, App Review / Live Mode, WhatsApp Business API, webhooks

Must-Haves

Previous experience creating a Verified Meta App (passed App Review , moved to Live Mode )

5–8+ years building production apps (React + Node + Postgres)

Strong API and database design; proven SQL performance debugging

Real OAuth 2.0 experience with PKCE, refresh, rotation and third-party integrations

Shipped RAG / search features (chunking, embeddings, retrieval) or equivalent complexity

Encryption in practice : TLS / mTLS, encryption at rest (KMS / HSM), key rotation

Secrets management (Vault / SSM / Secrets Manager); zero secrets in code / CI

Postgres security : RLS for multi-tenancy, PITR backups, retention, masking

Observability + auditability : structured logs, SIEM integration, alerting

Excellent communication; thrives in fast, on-site product sprints

Nice-to-Haves

Supabase + pgvector at scale; Postgres tuning and partitioning

WhatsApp / Meta webhook processors; multi-channel chat experience

Seniority level

Mid-Senior level

Employment type

Full-time

Job function

Engineering and Information Technology

Industries : Technology, Information and Internet

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Software Engineer • Doha, Ad-Dawhah, Qatar

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