[8BE] Senior Back End Engineer

Software Mind Americas

3d•Remote

About The Position

We are seeking a highly autonomous Senior Back End Engineer with a "Platform Engineering" mindset to take ownership of complex system-level challenges. This project focuses on strengthening the core systems of a sophisticated, AI-powered product at the intersection of AI systems, infrastructure, and platform reliability. The team operates in a fast-moving, early-stage style environment leveraging cutting-edge AI development tools to solve cross-cutting technical challenges.

Requirements

5+ years of professional backend development
Excellent communication in English — written and spoken — for daily client interaction
Strong proficiency in C# / .NET (ASP.NET Core Web API, .NET 8) and clean architecture principles (DDD, CQRS)
Hands-on experience designing and building RESTful microservices at scale
Solid understanding of multi-tenant SaaS architecture patterns
Experience with AWS services: Lambda, SQS/EventBridge, S3, RDS/PostgreSQL or DynamoDB
Familiarity with Identity & Auth patterns: JWT, OAuth 2.0, OIDC; experience with Keycloak or similar identity providers
Experience working in brownfield environments — assessing and integrating with existing systems
Experience with containerization (Docker) and CI/CD pipeline management (Bitbucket Pipelines or equivalent)

Nice To Haves

Experience in retail, e-commerce, or B2B commerce domains
Familiarity with headless or composable commerce architectures
Experience with marketplace integrations (Amazon SP-API, Walmart Marketplace API)
Background in promotional products, print-on-demand, or B2B e-commerce
Experience working in distributed, multi-vendor delivery models

Responsibilities

Develop and maintain core backend services across Identity & Auth, Order Management, Pricing, Inventory, Catalog, and Notifications
Participate in code reviews and uphold engineering standards: branching strategy, CI/CD pipelines, and testing coverage (xUnit, BDD/Reqnroll)
Collaborate with Tech Lead and cross-functional teams to align on API contracts and integration points
Navigate brownfield complexity — work with legacy systems, support migration planning, and ensure backward compatibility
Participate in sprint ceremonies, backlog refinement, and technical design sessions
Contribute to observability and reliability improvements across Dev, QA, Integration, Staging, and Production (AWS-hosted)