Siddharth Desai
Technical Lead & Software Architect
I lead engineering teams and design production-grade web platforms, backend systems, and complex integrations across .NET, React, PostgreSQL, AWS, and modern cloud infrastructure.
7+ years building production systems, guiding engineering teams, working directly with US clients, and translating complex business requirements into maintainable architecture.
7+ Years
Software Engineering
4–5 Devs
Team Leadership & Mentorship
25MB+
AI Payload Async Pipeline
10s+ → <2s
API Latency Optimization
Production Leadership
UAT, Releases, & Client Communication
Technical Leadership & Engineering Capabilities
Core responsibilities honed across production environments and client delivery.
Technical Leadership
Team Guidance & Delivery: Guide developers through architecture, task planning, code reviews, unblocking technical issues, UAT, and production releases with direct US client communication.
System Architecture
Resilient Cloud Systems: Design scalable REST APIs, asynchronous background queue workers, relational/document database schemas, and integration boundaries for high traffic.
Full-Stack Product Engineering
Modern Web Stack: Build scalable applications using React/Next.js, TypeScript, C# / .NET 9, PostgreSQL, Redis, Docker, and cloud infrastructure with high maintainability.
Complex Integrations
Third-Party Ecosystems: Design secure integrations involving POS systems, payment gateways, delivery platforms, OAuth 2.0, webhooks, and multi-tenant workflows.
Featured Systems & Engineering Impact
Architectural problems solved across production platforms and SaaS initiatives.
AI Document Analysis Processing Pipeline
Challenge: 25MB+ document payloads and synchronous AI calls caused severe API timeouts and database row locking.
My Role: Technical Architecture & Implementation Leadership.
Solution: Designed async processing pipeline using AWS S3 presigned URLs, background queue workers, exponential retry backoff, and status projections.
Construction Finance SaaS Platform
Focus: Multi-stakeholder document automation, lien waivers, financial disbursement workflows, and AI compliance reviews.
My Role: Technical Lead & Full-Stack Architect.
Ownership: Led team of 4–5 developers, handled UAT deployments, debugged production edge cases, and communicated directly with US clients.
Commerce Integration Platform
Focus: Centralized integration layer connecting Clover POS, DoorDash delivery APIs, and WordPress online ordering.
My Role: System Architect & Integration Engineer.
Solution: Designed OAuth 2.0 multi-tenant merchant separation, resilient webhook state machines, and automated delivery dispatch.
FieldProof (SaaS Platform)
Focus: Personal SaaS initiative built to demonstrate product thinking, rapid execution, and full-stack ownership.
My Role: Creator & Full-Stack Architect.
Solution: Designed multi-tenant architecture, JWT auth, PostgreSQL database migrations, .NET 9 Web APIs, Next.js 14 frontends, and Docker containerization.
Career & Leadership Progression
7+ years of expanding technical scope from code implementation to system architecture and team leadership.
Software Developer
Focused on core feature delivery, database queries, front-end views, bug fixes, unit testing, and building foundational full-stack software development skills.
Senior Software Engineer
Owned complex backend modules, designed API contracts, optimized SQL/ORM query performance, implemented asynchronous job processing, and established code standards.
Technical Lead & Software Architect
Leading 4–5 developers, defining system architecture, managing production releases, conducting code reviews, driving UAT, and serving as primary technical contact for US clients.
Engineering Stack & Core Technologies
Battle-tested technologies used across production platforms.
Backend Engineering
- C# & .NET 9
- ASP.NET Core Web APIs
- REST APIs & Clean Onion
- PostgreSQL & EF Core
- Marten (Event Sourcing)
- CQRS Pattern
Frontend Engineering
- React 18
- Next.js 14 App Router
- TypeScript & JavaScript
- Tailwind CSS
- TanStack React Query v5
- Responsive UI Design
Cloud & Infrastructure
- AWS (S3, Presigned URLs)
- Docker & Docker Compose
- Redis Caching
- Render / Vercel Deployments
- Supabase
- CI/CD Pipelines
Architecture & Ops
- Background Workers & Queues
- Async Processing Pipelines
- OAuth 2.0 & Webhooks
- Multi-Tenant Separation
- API Latency Optimization
- UAT & Production Support
Building or Scaling a Complex Software Product?
I am open to Technical Lead & Software Architect opportunities, complex system design, product/platform engineering, and meaningful technical collaboration. Let's discuss how we can build resilient, high-performance software systems together.