Developer Support Engineer

interop.io

full-time

Posted on: 9/19/2025

Origin: • 🇧🇬 Bulgaria

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Mid-LevelSenior

ElectronGraphQLJavaJavaScript.NETNode.jsPythonTypeScript

About the role

Investigate and resolve complex client issues by analyzing logs, stack traces, APIs, and integration flows
Debug JavaScript/TypeScript in production-like scenarios; write small scripts/tests to reproduce client environments
Communicate with customers via ticketing system, or email
Initiate and participate in audio/video calls to deeply troubleshoot issues within the customer’s environment
Collaborate closely with Product and Engineering teams to identify root causes and ensure smooth resolutions
Build diagnostic tools, scripts, and sample applications to streamline support and improve client outcomes
Contribute to our knowledge base and internal runbooks with developer-grade solutions and examples
Act as a trusted technical advisor, explaining issues and best practices to both technical and non-technical stakeholders
Participate in on-call rotation (shared across the team / approx. 1 week per month)

Strong JavaScript / TypeScript literacy (read/debug production code; write small scripts/tests)
Proficient in log analysis (stack traces, errors, correlation across services)
API troubleshooting (REST/GraphQL; auth flows; headers; Postman/cURL)
Working knowledge of desktop/web fundamentals: Electron, iframes, browser contexts, CORS, storage
Practical understanding of environments/config management (dev/QA/stage/prod; feature flags; versioning)
Excellent written and verbal communication skills, with the ability to translate technical findings into client-friendly language
Desire to help customers and willingness to contribute to the team’s success
Fluent in English – verbally & written
Availability to perform on-call duties
Nice to have: QA/Automation or DevOps exposure (CI logs, releases, telemetry)
Nice to have: Scripting beyond JS (Python/Node CLI, .NET, Java) for quick internal tools
Nice to have: Experience with enterprise client support and secure data handling
Nice to have: Familiarity with Jira/JSM workflows and disciplined documentation