Developer Support Engineer

interop.io

full-time

Posted on: 9/30/2025

Location Type: Remote

Location: Remote • 🇧🇬 Bulgaria

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Job Level

Mid-LevelSenior

Tech Stack

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)

Requirements

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
Desire to help customers and willingness to contribute to the team’s success
Fluent in English – verbal and written
Availability to perform on-call duties
Nice to have: QA/Automation or DevOps exposure (CI logs, releases, telemetry); Scripting beyond JS (Python/Node CLI, .NET, Java); Experience with enterprise client support and secure data handling; Familiarity with Jira/JSM workflows and disciplined documentation.

Benefits

Competitive, market-leading salary
The freedom to work from home or the office
Performance bonuses
25 days off with up to 8 extra bonus days paid annual holiday
Premium healthcare and dental package
Co-funded Multisport card
Food vouchers
Access to an employee Well-being program
Long-term employee value distribution scheme (LEVD)
Modern office space at Campus X, recreation zones, and a spacious rooftop terrace
Generous refer-a-friend program
Experienced, skilled and friendly teammates
Clear career path and continuous learning opportunities.

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills

JavaScriptTypeScriptlog analysisAPI troubleshootingRESTGraphQLElectronCORSPythonNode CLI

Soft skills

communication skillscustomer serviceteam collaborationproblem-solvingtechnical advisingwillingness to contributeverbal communicationwritten communicationdesire to helpavailability for on-call duties