Senior Rails Performance Engineer at Fleetio

Description
Our Platform Engineering team is looking for a Senior Rails Performance Engineer to help run, maintain, and improve the performance of our Ruby on Rails stack and infrastructure. You will help scale our application using best in class architecture and software design. This includes training, software engineering, system design, and operational practices that support the needs of our engineers and customers while accounting for future growth. You will be entrusted with proactively identifying and owning initiatives that will help improve the performance, reliability, and scalability of our application stack and databases.

At Fleetio, we foster a culture of 'Product Engineers', where we value and prioritize engineers who enjoy being part of the product discovery process. Our Engineering and Product teams are structured as autonomous PODs that execute within one focal area toward a defined product vision. We strive to deliver easy-to-use software, and our goal as engineers is to quickly and continuously deliver meaningful value to our customers. We've optimized our CI/CD tools and processes to easily get code into our production environments, resulting in an average of 40 deploys per week.

Fleetio is a modern software platform that helps thousands of organizations around the world manage their fleet operations. Transportation technology is a hot market and we’re leading the charge, with raving fans and new customers signing up every day. We raised $450M in Series D in March of 2025 and are on an exciting trajectory as a company. Fleetio is also a proud founding member of the Rails Foundation!

More About Our Team and Company
Watch our culture videos: https://fleet.io/culture
Engineering culture, interview process and videos: https://www.fleetio.com/careers/engineering
Fleetio overview video: https://www.youtube.com/watch?v=IlvIbwZT3oU
Fleetio Go overview video: https://www.fleetio.com/go
More about the Fleetio platform: https://www.fleetio.com/features
API docs: developer.fleetio.com
Test drive Fleetio to get an even better feel for what we're building: https://www.fleetio.com/register
This is a remote opportunity and is open to candidates in the United States, Canada, or Mexico.

Who You Are
Our ideal candidate is an Engineer experienced in scaling Ruby on Rails applications, with a passion for optimization and performance improvements. You bring a strong background in Performance and Infrastructure Engineering for Rails applications. You follow Agile and DevOps principles, can effectively influence teams to achieve goals, and demonstrate excellent problem-solving skills in our fast-paced environment.

As a Rails Performance Engineer on Fleetio’s Platform Engineering team, you will:
Proactively identify, triage, and resolve performance issues
Enhance system observability by monitoring performance metrics across Ruby, Rails, and database systems, including SLOs and SLIs
Guide product engineers on Ruby/Rails performance and database best practices through code reviews and pair programming
Optimize performance through instance configuration and monitoring
Collaborate with other SREs to proactively identify and address performance bottlenecks
Lead database capacity planning and upgrade initiatives
Manage the database-specific components of disaster recovery planning and execution
Oversee backup systems and pre-production databases
Create and maintain infrastructure and operations documentation
Participate in the on-call rotation

Your Experience
5+ years of Ruby/Rail Experience
3+ years of AWS Experience
Kubernetes experience
Experience with profiling and benchmarking source code
Effective at code review, and identifying potential performance problems before they reach production
Experience with Datadog or other APM tools
Excellent written and verbal communication skills

Considered a Plus
Infrastructure as Code tools (Terraform)
Deep understanding of cloud network fundamentals (routing, firewalls, load balancers, CDNs, VPCs, etc.)
Experience with distributed event and data stores, such as Kafka, Redis, Elasticsearch, Memcached, and TimescaleDB
You know a thing or two about the fleet management industry
Benefits
Multiple health/dental coverage options
Vision insurance
Incentive stock options
401(k) match of 4%
PTO - 4 weeks
12 company holidays + 2 floating holidays
Parental leave- birthing parent (16 weeks paid) non-birthing (4 weeks)
FSA & HSA options
Short and long term disability (short term 100% paid)
Community service funds
Professional development funds
Wellbeing fund - $150 quarterly
Business expense stipend- $125 quarterly
Mac laptop + new hire equipment stipend
Monthly catered lunches
Fully stocked kitchen with tons of drinks & snacks
Remote working friendly since 2012 #LI-REMOTE

Fleetio provides equal employment opportunities to all employees and applicants and prohibits discrimination and harassment. We celebrate diversity and are committed to creating an inclusive environment for all. All employment is decided on the basis of qualifications, merit, and business need.