DevOps on Ruby on Rails

Project Team

The project is a taxi ordering service. The user can hail a taxi, monitor an ordered taxi, pay for a

ride, and see trip history. The system contains the following components:

● Ride server (all data processing);

● Payment server (PCI DSS-compliant), which performs a transaction with the passenger's

digital wallet and payment gateways;

● Mobile application (hail taxi, geocoding, map, payments);

● Taxi terminal (3rd party).

The project integrates with 3rd party services, including PayPal, MasterPass, Stripe, and Twilio.

Team: 1 Team Lead, 1 UI Developers, 6 Back-End Developers, 9 Mobile Developers, 5 QA, 2

BA and 2 Designer.

What You’ll Do

● Design, build, and operate reliable, scalable distributed systems.

● Improve system availability, performance, and resilience.

● Automate infrastructure, deployments, and operational processes.

● Diagnose and resolve production issues.

● Lead upgrades and migrations with minimal or zero downtime.

● Participate in on-call rotations and incident response.

● Collaborate closely with development teams to improve operability.

● Drive best practices around monitoring, alerting, and capacity planning.

● Reduce operational toil through automation.

● Contribute to incident management, post-mortems, disaster recovery strategies, and

continuous reliability improvements.

What You Bring

● 7+ years of experience, specializing in Kubernetes and AWS.

● Strong programming skills in Ruby.

● Solid understanding of concurrency, runtime behavior, and performance optimization.

● Hands-on experience with Docker and containerized workloads.

● Strong Kubernetes expertise (Deployments, StatefulSets, Services, Ingress, Helm,

troubleshooting, autoscaling).

● Strong AWS experience (EC2, EKS, RDS, S3, IAM, VPC, Load Balancers,

CloudWatch).

● Experience designing infrastructure for high availability and disaster recovery.

● Experience with CI/CD pipelines and Infrastructure as Code (Terraform,

CloudFormation, Pulumi, or similar).

● Experience with RabbitMQ or similar messaging systems (Kafka, SQS, Pulsar, etc.).

● Strong understanding of relational databases (MySQL/PostgreSQL), including query

optimization, replication, and failover strategies.

● Familiarity with NoSQL and in-memory databases (Redis, DynamoDB, MongoDB).

● Experience with distributed systems, microservices, capacity planning, and fault

tolerance.

● Experience with monitoring and observability tools (Prometheus, Grafana, Datadog,

ELK/OpenSearch, OpenTelemetry).

● Strong understanding of Linux systems and networking fundamentals (TCP/IP, DNS,

HTTP/HTTPS, TLS, load balancing).

● Experience with SRE practices, including SLOs/SLIs/SLAs, load testing, resilience

testing, and incident management.

● Strong communication skills and ability to collaborate across engineering teams.

● Calm and effective during incidents with an ownership mindset.

Nice to have

● Experience operating production systems written in Ruby, Java, or other major platforms.

● Framework experience such as Ruby on Rails, Spring Boot, or similar.

● Experience operating high-traffic SaaS platforms.

● Cost optimization in cloud environments.

● Chaos engineering practices.

● Experience mentoring junior engineers.