Senior Node.js Engineer (with support responsibilities)

This position is open exclusively to Ukrainian residents within Ukraine (preferably Kyiv).
 

We are hiring a Senior Node.js Engineer who will primarily build and evolve our web platform while serving as the first-line responder during business hours, seven days per week. Most days pass without incidents and weekend requests are rare; your time will largely focus on development across Node.js, React, and PostgreSQL.
 

Support profile:

• Coverage: business hours, seven days per week; weekend requests are rare.
• Expectation: prompt acknowledgment, swift triage, and practical restoration; escalate when needed.
• Reality: frontline duties are light; the majority of your time is dedicated to development.
   

Main responsibilities:

• Contribute the majority of your time to product development: design, implementation, and testing.
• Deliver high-quality Node.js services and React UI changes; write maintainable, well-tested code.
• Design SQL beyond ORM abstractions; analyze queries, optimize performance, and evolve schemas.
• Improve reliability by creating runbooks, post-incident reviews, and automation for recurring tasks.
• Own rapid first response during business hours via instant messenger and an emergency phone line.
• Triage, reproduce, and diagnose issues across the stack; restore service quickly where possible.
• Apply safe workarounds, configuration tweaks, or hotfixes; execute rollbacks when needed.
• Escalate efficiently to the development team with clear context, logs, impact, and proposed next steps.
• Communicate status and timelines to internal stakeholders and customer contacts.
• Enhance monitoring and alerting; instrument services for actionable logs, metrics, and traces.
   

Requirements:

• Senior-level experience building production Node.js applications.
• React familiarity for practical UI issues diagnosis.
• PostgreSQL expertise and strong SQL skills beyond ORM usage, including query design and tuning.
• Hands-on experience with incident triage, root-cause analysis, and production debugging.
• Comfortable with Linux servers and on-prem fundamentals (DNS, TLS, certificates, basic networking).
• Proficient with Git workflows and CI/CD practices.
• Familiarity with observability (logs, metrics, traces) and structured troubleshooting.
   

Nice to have:

• Python or Go experience for tooling, services, or automation.
• Solid understanding of Docker for local development and packaging.
• Knowledge of reverse proxies/load balancers (Nginx, HAProxy, Traefik).
• Exposure to container orchestration (Docker Swarm or Kubernetes) and IaC (Terraform/Ansible).
• Practical experience in diagnosing infrastructure problems: resources congestions, network connectivity issues, PKI and other protocol-level security problems.
• Experience with Sentry, Prometheus/Grafana, ELK/OpenSearch, or OpenTelemetry.
   

Hiring Process:

• Resume review — up to 5 business days.
• Introductory meeting with the Systems/Software Architect.
• Technical interview with several team members.
• Offer discussion.
   

We Offer:

• Competitive compensation.
• Hybrid work model: combination of in-office and remote work as needed.
• Paid vacation — 21 business days per year.
• Paid sick leave.
• Exposure to intersecting domains: software development, information security, and cloud/on-prem infrastructure engineering.
• Experience in mission-critical projects.