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Junior Backend Developer (Node.js), Trainee Linux Administrator
- City:
- Kyiv
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📄 Oleksandr Pechkur
Junior Technical Support / Application Support Engineer
📧 [open contact info ](look above in the "contact info" section)
📱 [open contact info ](look above in the "contact info" section)
🌍 Kyiv, Ukraine
💻 GitHub: SupBr1ght
💼 LinkedIn: [open contact info ](look above in the "contact info" section)
🎯 Summary
Motivated Junior Technical Support Engineer with a background in backend and full-stack development.
💻 Skills
Backend & APIs
Languages: Ukrainian (native), English (Intermediate)
Support & Debugging: log analysis, bug reproduction, troubleshooting, Jira/GitHub Issues
Databases: PostgreSQL, MongoDB (Mongoose), SQL queries, data modeling
Backend basics: Node.js, Express.js, Nest.js, AWS Lambda (code reading & bug fixing)
Tools: Swagger, Postman, Git/GitHub, Docker (basic), Render, Vercel
Auth & Security: JWT, RBAC, bcrypt
Cloud: AWS SES, S3, SQS
VoIP & Networking
SIP (basic call flow understanding)
RTP (media stream basics)
VoIP monitoring tools
Call logs analysis
One-way audio troubleshooting
🏢 Experience
Basic NAT / Firewall understanding
Internship — IT Company Unitalk September 2025
Worked with VoIP monitoring tools and call logs
Basic SIP signaling understanding (INVITE, ACK, BYE)
RTP media troubleshooting (one-way audio cases)
Assisted in diagnosing NAT / Firewall-related issues
Communicated with clients and escalated issues when needed
Worked with internal documentation and support procedures
Internship — IT Company (AdTech domain) September 2025
Supported and debugged a full-stack web app with Prebid.js
(header bidding).
Investigated and fixed issues with cookies, sessions, and JWT
authentication.
Worked with PostgreSQL + Prisma ORM to troubleshoot data
issues.
🛠
Deployed applications to Render and Vercel.
Gained experience working under strict dailyProjects
deadlines.
User Management System – Authentication (JWT), RBAC, data validation;
debugged access issues. (NestJS, MongoDB)
AWS Contact Form Handler – Serverless app with logging & error handling.
(AWS Lambda, SES, S3)
Weather Bot – Debug-oriented bot with logging & monitoring. (Node.js,
node-cron, Axios)
🎓 Education
Master’s Degree in Management (Agile Software Development focus)
KROK University, Kyiv | 2023 - 2025
Junior Technical Support / Application Support Engineer
📧 [
📱 [
🌍 Kyiv, Ukraine
💻 GitHub: SupBr1ght
💼 LinkedIn: [
🎯 Summary
Motivated Junior Technical Support Engineer with a background in backend and full-stack development.
💻 Skills
Backend & APIs
Languages: Ukrainian (native), English (Intermediate)
Support & Debugging: log analysis, bug reproduction, troubleshooting, Jira/GitHub Issues
Databases: PostgreSQL, MongoDB (Mongoose), SQL queries, data modeling
Backend basics: Node.js, Express.js, Nest.js, AWS Lambda (code reading & bug fixing)
Tools: Swagger, Postman, Git/GitHub, Docker (basic), Render, Vercel
Auth & Security: JWT, RBAC, bcrypt
Cloud: AWS SES, S3, SQS
VoIP & Networking
SIP (basic call flow understanding)
RTP (media stream basics)
VoIP monitoring tools
Call logs analysis
One-way audio troubleshooting
🏢 Experience
Basic NAT / Firewall understanding
Internship — IT Company Unitalk September 2025
Worked with VoIP monitoring tools and call logs
Basic SIP signaling understanding (INVITE, ACK, BYE)
RTP media troubleshooting (one-way audio cases)
Assisted in diagnosing NAT / Firewall-related issues
Communicated with clients and escalated issues when needed
Worked with internal documentation and support procedures
Internship — IT Company (AdTech domain) September 2025
Supported and debugged a full-stack web app with Prebid.js
(header bidding).
Investigated and fixed issues with cookies, sessions, and JWT
authentication.
Worked with PostgreSQL + Prisma ORM to troubleshoot data
issues.
🛠
Deployed applications to Render and Vercel.
Gained experience working under strict dailyProjects
deadlines.
User Management System – Authentication (JWT), RBAC, data validation;
debugged access issues. (NestJS, MongoDB)
AWS Contact Form Handler – Serverless app with logging & error handling.
(AWS Lambda, SES, S3)
Weather Bot – Debug-oriented bot with logging & monitoring. (Node.js,
node-cron, Axios)
🎓 Education
Master’s Degree in Management (Agile Software Development focus)
KROK University, Kyiv | 2023 - 2025
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The candidate's resume is posted at https://www.work.ua/resumes/16770718/