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The Senior Backend Engineer II operates beyond individual feature ownership and takes responsibility for major backend subsystems, multi-cycle initiatives, and complex technical challenges that impact multiple teams. This role works closely with Engineering Managers, Product, and fellow engineers to drive scalable, reliable, and secure backend solutions and is expected to clarify ambiguous problems, lead technical design efforts, and elevate engineering standards across the Backend pillar. Success in this role is measured not only by the delivery of high-quality systems but also by the ability to create technical leverage, strengthen reliability, and increase the organization's execution capacity.
Job Responsibility:
Be accountable for the technical health, scalability, and long-term sustainability of a defined backend subsystem or domain
Lead complex technical initiatives spanning multiple cycles with end-to-end responsibility from problem framing to measurable stabilization
Design robust backend architectures and implementation plans that reduce operational risk and improve system performance
Break down ambiguous or loosely defined problems into clear technical strategies with explicit trade-offs
Collaborate closely with Engineering Managers and Product to align technical solutions with business priorities and customer needs
Improve backend reliability by proactively identifying systemic risks, technical debt, and architectural bottlenecks within the domain and drive remediation before they impact teams or customers
Contribute hands-on to the backend codebase, delivering high-quality, secure, well-structured, and maintainable code
Raise engineering standards through thoughtful code reviews, documentation, and technical guidance
Mentor mid-level and senior engineers across the Backend pillar, supporting their growth toward greater technical ownership
Support production stability by actively participating in debugging, root cause analysis, and long-term remediation efforts
Contribute to evolving backend development practices, testing strategies, CI/CD workflows, and performance optimization efforts
Act as a technical reference point within a defined backend domain, fostering alignment and reducing cross-team friction
Requirements:
9+ years of relevant experience as a Backend Engineer, with demonstrated ownership of complex systems or subsystems
Strong experience with Ruby on Rails (preferred) or comparable backend frameworks
Proven experience designing and implementing scalable APIs and backend services
Strong expertise in PostgreSQL and database design
Deep understanding of software design principles, testing strategies, CI/CD, and backend reliability practices
Experience working with distributed systems, background jobs (e.g., Sidekiq), caching layers (e.g., Redis), and cloud infrastructure (AWS preferred)
Experience leading technical initiatives or large refactors across teams is highly valued
Strong problem-solving skills and ability to operate effectively in complex, evolving environments
Excellent written and verbal communication skills in a collaborative, remote-first setting
Bachelor’s or Master’s degree in Computer Science or equivalent practical experience
Nice to have:
Familiarity with NoSQL or vector databases (e.g., Qdrant, Pinecone, or Weaviate)
Familiarity with modern AI/ML services or data-intensive workflows is desirable
What we offer:
Monthly remote work stipend (home internet costs, electricity)
Home office equipment package right at the start (laptop, keyboard, monitor…)
Home office equipment upgrade (furniture, ear plugs …) or membership to a local co-working space after your onboarding
Sick leave benefit, parental leave and 25 days of annual leave plus your local national holidays
Personal development fund for courses, books, conferences, and material
VSOP (Virtual Stock Option Plan)
The annual international team-building trip, quarterly and monthly online get-togethers