Senior Backend Developer, JavaScript

Bright Data

. Take end-to-end ownership of services and features in production .

Posted 11/8/2026full-timeSan Francisco • California • United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in backend JavaScript/Node.js development, with a strong focus on building and maintaining high-scale services that prioritize performance, reliability, and security. Proficient in system design, network protocols, and troubleshooting complex networking issues.

Highest-signal resume keywords

Backend JavaScript/Node.js DevelopmentNetwork Protocols and SecuritySystem Design FundamentalsProduction Backend ServicesObservability Tooling

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

JavaScriptNode.jsTCP/IPDNSHTTP1/2/3TLSWebSocketsMongoDBRedisKubernetes

Soft Skills

Fast LearnerTeam CollaborationWritten CommunicationVerbal Communication

Tools & Technologies

WiresharkAWSSaaSLogsMetricsTracing

Industry Keywords

Backend EngineeringNetworkingPerformanceReliabilityFault Tolerance

Tech Stack

Tools & technologies

AWSDNSJavaScriptKubernetesMongoDBNode.jsRedisTCP/IP

About the role

Key responsibilities & impact

Take end-to-end ownership of services and features in production
Develop features from design and implementation through production rollout and ongoing improvements
Build and maintain high-scale backend services emphasizing performance, reliability, and security
Participate in system design and architecture planning for scalable and maintainable solutions
Address networking challenges involving traffic flows, proxy behavior, request/response handling, and protocol-level edge cases
Investigate and troubleshoot complex networking issues using Wireshark and similar packet inspection/debugging tools
Write high-quality, maintainable code with appropriate test coverage
Participate actively in code reviews
Collaborate with engineers and stakeholders to deliver impactful solutions
Continuously learn and apply best practices in backend engineering and networking

Requirements

What you’ll need

5+ years of hands-on software engineering experience, including 2+ years focused on backend JavaScript / Node.js development
Very good understanding of how the Node.js event loop works, including practical knowledge of the platform’s strengths and limitations (I/O vs CPU-bound workloads, async patterns, blocking pitfalls, memory/GC considerations)
Proven experience building and operating production backend services
Strong understanding of network protocols and security, including TCP/IP/UDP, DNS, HTTP1/2/3, TLS and WebSockets
Experience with databases and caching layers such as MongoDB and Redis
Familiarity with Kubernetes and containerized deployments
Proficient in system design fundamentals: APIs, scalability, performance, reliability, and fault tolerance
Fast learner, able to work independently and as part of a team
Proficiency in English, with strong written and verbal communication skills
Experience with AWS and SaaS environments
Experience debugging production networking issues (latency, packet loss, connection reuse, TLS handshakes, etc.)
Experience with observability tooling (logs/metrics/tracing) and incident response/on-call

Benefits

Comp & perks

Remote work arrangement indicated as hybrid
Full-time employment