Senior Back End Engineer

Software Mind

Senior Back End Engineer developing core backend services for AI-powered products. Focusing on complex system-level challenges and collaborating with cross-functional teams in a fast-paced environment.

Posted 5/27/2026full-timeRemote • 🇨🇷 Costa RicaSeniorWebsite

Tech Stack

Tools & technologies

ASP.NETAWSDockerDynamoDBMicroservices.NETPostgres

About the role

Key responsibilities & impact

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)

Requirements

What you’ll need

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)

Benefits

Comp & perks

Educational resources
Flexible schedule and Work From Anywhere
Referral Program
Supportive and chill atmosphere

ATS Keywords

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Hard Skills & Tools

C#.NETASP.NET Core Web API.NET 8clean architecture principlesRESTful microservicesmulti-tenant SaaS architectureAWS LambdaAWS SQSDocker

Soft Skills

communicationcollaborationcode reviewproblem-solvingtechnical design