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Full Stack Engineer (C++) at Zipdev. Zipdev is helping its client in building and evolving software that supports modern clinical and operational workflows. The product surface includes Windows desktop applications and connected services, with a strong emphasis on reliability, maintainability, and customer experience.. As a Full‑Stack Engineer, you will deliver end-to-end capabilities across the Windows client, service/business logic layers, and the database. Your primary stack will include C++ (MFC) for desktop UI and application behavior, C# for services and shared business logic, and MS SQL for data persistence.. Key Responsibilities. Full‑Stack Delivery (End‑to‑End). Design, build, and maintain features across the full stack (C++/MFC desktop → C# services/business logic → MS SQL).. Own features from requirements through implementation, test readiness, release, and production support.. Collaborate with QA and product partners to refine acceptance criteria, validate behavior, and ensure release readiness in an Agile cadence.. Participate in AI-augmented development workflows, reviewing and validating AI-generated code against acceptance criteria.. Follow Git best practices: feature branches, pull requests for all changes, and clear commit hygiene; proactively update documentation when behavior or architecture changes.. Desktop (C++ / MFC). Design, build, and maintain Windows workflows using C++ and MFC.. Debug and remediate defects across UI, threading, memory/resource management, and performance hotspots.. Modernize and refactor legacy areas to improve maintainability, testability, and stability while preserving user workflows.. Implement defensive coding patterns and robust error handling suitable for regulated environments.. Services & Business Logic (C#). Develop and maintain C# components and service layers that support desktop workflows and integrations.. Design and consume APIs or internal contracts as needed to connect client and service components.. Implement secure authentication/authorization patterns appropriate for enterprise and regulated contexts.. Create and maintain automated checks and diagnostics to support supportability and observability.. Data Layer (MS SQL). Design and evolve MS SQL schemas with emphasis on clarity, performance, and data integrity.. Write and optimize queries, stored procedures, and migration scripts where appropriate.. Collaborate with QA and Engineering to validate data correctness and enable reliable test data setup.. Contribute to troubleshooting production issues through data analysis and root cause investigation.. Quality, Testing, and Agile Execution. Demonstrate knowledge of QA processes in an Agile environment, including acceptance criteria, defect triage, regression awareness, and collaboration with QA roles.. Contribute to test strategy (unit/integration as appropriate), and ensure features meet functional, security, and reliability expectations.. Maintain a disciplined approach to compliance and secure engineering practices.. Core Technical Skills. Strong experience developing Windows desktop applications using C++ and MFC.. Strong experience developing with C# (services, libraries, or application layers).. Solid relational database skills with MS SQL (schema design, query awareness, performance basics).. Proven ability to debug complex issues across layers (UI ↔ business logic ↔ database) and drive fixes to completion.. Familiarity with Git-based workflows (pull requests, code reviews) and maintaining engineering documentation.. AI‑Augmented Development (Required). Hands-on experience using AI coding assistants as part of daily development, with a clear understanding of the Human → AI → Human review loop and human accountability.. Ability to maintain supporting documentation such as READMEs, architecture notes, and engineering guidelines.. HIPAA & Compliance Awareness (Required). Strong understanding that Protected Health Information (PHI) must never appear in code, logs, tests, commits, or error messages; comfort working with synthetic/mock data.. Awareness of secure coding practices (no hardcoded credentials, least-privilege access patterns, safe error handling).. Must be located in LATAM and have high English proficiency (C1+).. Preferred / Nice‑to‑Have Qualifications. Healthcare or dental domain experience.. Experience maintaining and modernizing mature/legacy Windows desktop codebases.. Experience with performance profiling and memory diagnostics in native Windows applications.. Experience contributing to a product that integrates desktop and cloud/hosted services.. Company Location: Colombia.