Senior Ruby/Rails Developer (API Management Platform)

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Remote - Europe Remote - Greece Remote - Portugal Remote - Spain Remote - Singapore Remote - Poland Remote - Bulgaria Remote - Serbia Remote - UK Remote - EU Full Time Senior
€ 100K - € 140K Yearly

Published on August 19, 2025

Here at Workato, we are a team moved by innovation — a passion to create the best possible way and the drive to continue to make it better. We also believe in the power of our team, knowing that we only succeed if we all succeed together. Our team uses seven operating principles to help us make better decisions, work as a team, and have fun.

We are looking for an exceptional Senior Ruby/Rails Developer to join our growing Data Integration team, where you will work with API Management platform. 

You will be responsible to: 
  • Lead technical design discussions and architectural decisions for system improvements
  • Mentor junior and mid-level developers on best practices and system internals
  • Investigate and resolve complex production issues, especially those involving external dependencies
  • Architect solutions for API reliability, monitoring, and performance
  • Collaborate with DevOps and Infrastructure teams on system reliability and performance
  • Document critical system behaviors and integration patterns

Expectations:
  • Self-directed problem solver who can navigate ambiguous requirements
  • Excellent debugging skills with ability to trace issues across multiple system layers and external services
  • Strong written and verbal communication skills for technical documentation and cross-team collaboration
  • Experience with large-scale refactoring projects and technical debt reduction
  • Ability to balance technical excellence with pragmatic business needs
  • Experience with CI/CD pipelines, monitoring, and production incident response
Nice to Have:
  • Contributions to open-source Ruby projects
  • Experience with Workato or similar iPaaS platforms
  • Knowledge of enterprise integration patterns
  • Understanding of compliance and security requirements in production systems
  • Experience with webhook systems and event-driven architectures

Requirements
Mandatory technical expertise
Ruby & Ecosystem: Expert-level proficiency in Ruby with 5+ years of experience building and maintaining large-scale, production Ruby on Rails applications. Deep understanding of Ruby internals, metaprogramming, and performance optimization techniques.

Database:
  • Proficiency in database internals: understanding of MVCC, transaction isolation levels, locking mechanisms, and replication strategies
Systems:
  • Deep understanding of distributed systems concepts and their practical implications
  • Expertise in caching strategies at multiple layers (application, database, CDN)
  • Experience with message queuing systems and understanding of distributed queue patterns (at-least-once, exactly-once delivery, dead letter queues)
  • Proficiency in performance profiling, memory leak detection, and optimization of Ruby applications
  • Understanding of concurrency models in Ruby and their appropriate use cases
Integrations:
  • Deep understanding of HTTP client libraries, connection pooling, and timeout strategies (connection, read, write, idle timeouts)
  • Expertise in authentication and authorization patterns: OAuth 2.0 flows, JWT, API keys, SAML, webhook signatures
  • Experience with retry mechanisms, circuit breakers, and graceful degradation for third-party dependencies
  • Proficiency in handling rate limiting, backpressure, and API quota management
  • Understanding of common integration challenges: data synchronization, eventual consistency, idempotency
API Management:
  • Understanding of API gateway patterns and routing strategies
  • Familiarity with OpenAPI/Swagger specifications for API documentation
  • Knowledge of API versioning strategies and backward compatibility
  • Basic understanding of API monitoring and analytics
Codebase:
  • Proven track record of working with and enhancing mature, established codebases
  • Ability to understand and refactor complex systems while maintaining stability
  • Experience in incremental improvement strategies and maintaining backward compatibility
  • Skills in navigating through layers of abstraction to understand system behavior
 
Preferred Skills
Infrastructure:
  • Understanding of Docker and Kubernetes for containerized deployments
  • Understanding of infrastructure as code (Terraform, Ansible)
  • Understanding of observability tools (Prometheus, Grafana, ELK stack)
Data:
  • Redis expertise
  • ClickHouse or similar columnar databases for analytics workloads
  • Experience with event streaming platforms (Kafka)
Background processing: Advanced experience with Sidekiq internals, custom middleware, performance tuning, and handling high-throughput job processing scenarios.
Frontend: Basic understanding of JavaScript and modern UI frameworks (Angular, React, or Vue.js) sufficient for debugging full-stack issues and API integration points.
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