Senior Full Stack Developer

About the role

Exquitech is looking for a Senior Full Stack Developer to join a growing engineering team responsible for an established multi‑tenant SaaS product. You will work end‑to‑end, from data modeling and API design to the Angular front‑end, turning product owner requirements into shippable features.

Key responsibilities

• Maintain and enhance the existing product while designing and building new features across an Angular/TypeScript UI and a .NET/C# backend.
• Develop core modules such as scheduling, inventory, billing, CRM, loyalty, and reporting.
• Design multi‑tenant data models, enforce tenant isolation, and ensure data integrity and auditability.
• Build and consume third‑party API integrations, handling authentication, webhooks, rate limits, and failure modes.
• Contribute to AI‑powered features using Retrieval‑Augmented Generation (RAG) and large language model (LLM) APIs.
• Set engineering standards through code reviews, testing, and pragmatic documentation.

Required profile

• 5+ years of experience building and shipping production web applications end‑to‑end.
• Strong proficiency in Angular, TypeScript.NET, and C#.
• Hands‑on experience designing and operating multi‑tenant SaaS architectures.
• Solid relational data modeling and SQL skills (Azure SQL preferred).
• Ability to make sound architectural trade‑offs and communicate decisions clearly.
• Team player who collaborates well within a larger engineering group.

Required skills

• Angular
• TypeScript
• .NET
• C#
• Azure SQL
• SQL
• Azure DevOps / CI‑CD pipelines
• Azure infrastructure
• Multi‑tenant SaaS architecture
• Third‑party API integration (auth, webhooks, rate limiting)
• WhatsApp Business API or similar messaging integrations
• LLM / RAG concepts
• AI coding assistants (e.g., Claude Code, GitHub Copilot)