[8BE] Senior Back End Engineer

SoftwareMind

San José, San José Province, Costa Rica Remote permanent

Posted: May 26, 2026

Quick Summary

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 software development. The ideal candidate will be responsible for leading the development of a complex system, working closely with cross-functional teams to deliver high-quality results.

Job Description

We are Software Mind, an awesome team of engineers who are ready to ramp up any top-notch company’s projects! Our aim? To always be one step ahead. Become part of a multicultural company in constant growth with an excellent work environment certified by Great Place To Work!

Project - the aim you'll have

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.

Expectations - the experience you 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)

Nice to have

• 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

What you will do

• 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)

Our Benefits 

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

We are accepting applications from LATAM countries

#LI-DNI

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