Application Architect

Stack

Responsibilities

• ▹Drive key architectural decisions and directly influence how the platform is built and evolves
• ▹Lead three parallel workstreams: legacy ColdFusion → Angular/.NET migration; on-prem → Azure re-platforming; and a greenfield Order Management System
• ▹Co-author PRDs with Business Analysts and decompose them into technical specs and ADRs
• ▹Produce a working prototype within days using AI coding agents
• ▹Guide frontend architecture, review code, and pair with the UI team on the storefront migration
• ▹Lead discovery sessions, present trade-offs to the client, and make and defend architectural decisions
• ▹Collaborate with distributed teams and US-based clients

Requirements

• ▹10+ years of hands-on engineering experience with .NET / C# (.NET 8+), including 3+ years in an Architect or Lead role on production e-commerce or large-scale transactional systems
• ▹Clean Architecture and CQRS (MediatR, Dapper, Hangfire, Polly)
• ▹Strong practical command of Clean Architecture/Vertical Slice, CQRS, and integration patterns (MediatR, Dapper, Hangfire/Quartz, Polly, MassTransit / Service Bus)
• ▹Solid experience with Angular (latest LTS), able to guide frontend architecture and review code
• ▹Proven Azure architecture experience: App Service / Container Apps, Azure SQL, Service Bus, Key Vault, Application Insights, Azure DevOps CI/CD; IaC with Bicep or Terraform
• ▹Hands-on experience designing and delivering Order Management/e-commerce backends (catalog, pricing, cart, checkout, payments, fulfillment, returns)
• ▹Mandatory: practical Agentic / AI-Augmented Engineering experience — daily use of Claude Code, ChatGPT, GitHub Copilot, or equivalent for code generation, refactoring, code review, and rapid prototyping; familiarity with spec-driven / PRD-driven AI workflows
• ▹Ability to co-author PRDs with Business Analysts, decompose them into technical specs/ADRs, and produce a working prototype within days using AI coding agents
• ▹Strong written and verbal English (Upper-Intermediate / Advanced)
• ▹Comfort working as the technical face of the engagement: leading discovery sessions, presenting trade-offs, and defending architectural decisions
• ▹Comfort working with distributed teams and collaborating with US-based clients

Nice to have

• ▹Experience modernizing legacy platforms (ColdFusion, classic ASP.NET, or similar monolith → modern stack) and migrating workloads from on-prem to Azure

Soft skills

About the company

Langate is an award-winning provider of web development services in three main categories: business, healthcare, and education, proud of its strong collaboration with US clients.