Sr. Backend Engineer
New
M
Mode.IncTechnology, Mobile
We are a 100% remote-first, global company.Full-TimeSenior
Salary not disclosed
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Job Details
- Experience
- 6+ years of backend engineering experience, ideally in consumer apps, mobile, or SaaS, with at least 2 years in a senior-level role
- Required Skills
- AWSPostgreSQLRuby on RailsCI/CDRESTful APIsDistributed Systems
Requirements
- 6+ years of backend engineering experience, with at least 2 years in a senior-level role.
- Strong production experience with Ruby on Rails and the ability to work effectively in an existing Rails codebase.
- Hands-on production experience with PostgreSQL, including schema design, indexing, and query optimization.
- Strong expertise with Sidekiq for background job processing, scheduling, and reliability patterns.
- Solid background in API design, RESTful principles, versioning, and serialization.
- Proven track record of integrating with third-party APIs and external services.
- Experience designing, building, and scaling distributed systems in production.
- Strong skills in testing, CI/CD pipelines, logging/monitoring, debugging, and performance optimization.
- Ability to work in a fast-moving remote startup environment.
- Strong production ownership mindset and ability to work with ambiguity.
Responsibilities
- Architect backend systems powering user workflows, notifications, and automation features.
- Design APIs and microservices built for performance, efficiency, and scale.
- Improve observability, monitoring, logging, testing, and alerting.
- Identify performance bottlenecks and implement optimization strategies.
- Build distributed systems with multiple services, queues, and asynchronous data flows.
- Ensure uptime, stability, and production resilience.
- Partner with product, data, and frontend teams to ship features in 2-week sprints.
- Participate in system design and architecture reviews.
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