Senior Technical Quality Engineer (Toda Colombia)

We are looking for a Technical Quality Engineer contractor to support middleware and backend integration validation. This role will focus on testing API-driven workflows, middleware rules, data transformation logic, permissions, sync behavior, and downstream system impact. The engineer will work closely with backend and middleware engineers to define validation scenarios, execute functional and technical testing, investigate failures through logs and diagnostic tools, and help build confidence in the reliability of the middleware platform.

What This Person Will Do

● Validate middleware and backend workflows across APIs, services, databases, and downstream systems

● Test JSON payloads, data mappings, transformation rules, sync behavior, and error handling

● Verify permissions, account-level enablement, user-level access, tenant boundaries, and API enforcement

● Create test scenarios for complex edge cases, failure modes, and high-risk data flows

● Use tools such as Claude Code, logs, dashboards, API clients, and database queries to investigate issues

● Support backend/API test automation and regression coverage

● Document test results, defects, risks, and release confidence clearly for engineering and product partners

● Participate in refinement, planning, and release readiness discussions

● Help identify quality risks early, especially around data integrity, customer impact, and operational reliability

Required Skills & Experience

Technical Quality Engineer (Middleware / Backend Integration)

● 5+ years of experience in quality assurance, with strong hands-on work validating backend services, middleware, APIs, integrations, and data flows

● Strong experience testing API-driven workflows, including request/response validation, payload structure, error handling, retries, status codes, and failure

scenarios

● Familiarity with middleware systems, integration layers, event-driven workflows, sync-based architectures, or rule-processing systems

● Hands-on experience with at least one scripting or programming language, such as TypeScript, JavaScript, Python, Java, or SQL, used for test automation, API validation, data checks, troubleshooting, or quality tooling.

● Practical experience working with JSON payloads, data mapping, transformation logic, middleware rules, and downstream system behavior

● Ability to validate end-to-end backend workflows across middleware, backend services, APIs, databases, and external/internal systems

● Experience with backend testing tools such as Postman, Bruno, RestAssured

● Experience using diagnostic, logging, monitoring, or observability tools such as AWS CloudWatch, Kibana, Datadog, Splunk, Grafana, New Relic, Honeycomb, OpenSearch, or similar tools.

● Strong communication skills, with the ability to clearly explain validation status,technical risks, blockers, and release confidence to engineering and product

partners

● Experience using AI tools such as Claude Code, Codex, GitHub Copilot or similar tools for quality analysis, test design, documentation, or code review support.

● Practical experience testing or supporting cloud-based applications and services, with familiarity across AWS, Google Cloud Platform, or Azure environments, including logs, monitoring, configuration, deployments, service integrations, and operational behavior.

● Strong understanding of data integrity risks, including incorrect mappings, missing data, duplicate identifiers, malformed payloads, sync failures, and downstream processing issues

Nice to Have

● Mobile or web testing experience for end-to-end workflow validation, but not as the primary focus

● Experience working in regulated, high-impact, customer-critical, or operationally sensitive domains where reliability, correctness, security, and data integrity are important.

● Experience validating permissions, role-based access, tenant boundaries, account-level enablement, user-level access controls, and API enforcement

● Experience with Playwright and UI test automation