Senior Backend Engineer

Ruby Labs

4d • Remote

About The Position

At RubyLabs we’re hiring a Senior Backend Engineer to help design, build, and scale the core backend systems that power our AI product Use.ai. This is a high-ownership role for an engineer who loves solving distributed systems challenges and driving both feature delivery and infrastructure excellence. This position requires close collaboration with our development team to ensure consistency, quality, and alignment across all projects.

Requirements

• Deep expertise in distributed systems, system design, and backend architecture.
• Strong understanding of database fundamentals, indexing, consistency, replication, transactions, and storage trade-offs.
• Proven ability to design scalable and resilient systems.
• Fluency in Node.js backend development.
• Strong grasp of software engineering principles, including SOLID.
• Experience debugging complex issues in production environments.
• Experience with cloud infrastructure (AWS) and backend service deployment.
• Experience implementing monitoring and observability using tools such as Sentry and OpenTelemetry (OTel), including tracing, logging, and alerting.
• High standards for code quality, reliability, and communication.
• Deep knowledge of Redis, including caching, pub/sub, queues, replication, persistence, and performance tuning.
• Strong experience with AWS services, including compute, serverless, networking, storage, security, and infrastructure-as-code.
• Experience with Cloudflare Workers, edge routing, caching, and security primitives.
• Familiarity with Sentry performance monitoring and OpenTelemetry instrumentation at scale.
• Comfortable working in timezone ±2 hours from UK time.

Nice To Haves

• Experience working in startup environments or small, high-autonomy engineering teams.
• Passion for building and improving infrastructure, developer experience, and observability.

Responsibilities

• Bring 8+ years of overall professional experience, ideally including lead-level experience on the position of Lead Backend Developer.
• Deliver new backend features with a focus on scalability, performance, and reliability.
• Maintain, optimize, and improve existing services and infrastructure.
• Design, deploy, and operate backend services across AWS, Cloudflare, and other environments.
• Implement and evolve monitoring and observability using tools such as Sentry, OpenTelemetry (OTel), logging, alerting, and related platforms.
• Investigate and resolve production issues across distributed systems.
• Write clean, maintainable code aligned with SOLID principles, system design, and backend best practices.
• Lead incident investigations, root cause analysis, and system reliability improvements.
• Contribute to architectural decisions, documentation, and infrastructure planning.
• Collaborate with high standards for communication, ownership, and delivery.

Benefits

• Remote Work Environment: Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance.
• Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize your well-being, without counting days.
• Paid National Holidays: Celebrate and relax on national holidays with paid time off to unwind and recharge.
• Company-provided MacBook: Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them.
• Flexible Independent Contractor Agreement: Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities. Benefit from tax advantages, networking opportunities, reduced employment obligations, and the freedom to work from anywhere.

What This Job Offers

• Career Level: Senior
• Education Level: No Education Listed