Senior Ruby on Rails Developer

BIMM; Toronto; Hybrid; CAD 80,000 - 130,000; Full time

Benefits offered by this job

Health & dental benefits

RRSP with matching

Hybrid work model

On-site in Distillery District

Job summary

BIMM, a Toronto-based agency, seeks an experienced Senior Ruby on Rails Developer for a multi-year engagement to modernize a high-traffic Rails 8 platform. The role involves on-site collaboration in the Distillery District 2 days/week for local candidates, with remote options across Canada and EST-hour alignment.

You’ll work on a large Rails codebase, extend CMS capabilities, build a versioned API layer for a mobile app, and fortify integrations and security.

Qualifications

• 5+ years building production Ruby on Rails apps in large codebases you didn’t write
• Experience with Hotwire, Turbo Drive/Frames/Streams and Stimulus
• Strong PostgreSQL skills: schema, indexing, query optimization, EXPLAIN

Responsibilities

• Develop and extend features across a Rails 8 monolith (models, controllers, jobs, server-rendered views)
• Implement rich interactive front-end using Hotwire and Tailwind CSS
• Contribute to a shared component library for a consistent UI surface
• Extend an in-house Rails CMS and enable reusable content snippets and configuration-driven page regions
• Build and harden integrations with event-management, ticketing, and CRM REST APIs
• Design and operate Sidekiq workflows with attention to concurrency, retries, and failures

Skills

Ruby on Rails

Hotwire

Stimulus

Turbo Drive/Frames/Streams

Tailwind CSS

PostgreSQL

Sidekiq

REST APIs

Webhooks

Security best practices

RSpec/Minitest testing

Tools

Git

RSpec

Minitest

Heroku / PaaS

CI/CD tooling

Job description

BIMM is booming, sowe’relooking for an experienced Senior Ruby on Rails Developer oncontractto join our team!

Local candidates (GTHA) will be asked to join us at BIMM HQ (Distillery District) 2 days per week. We are open to remote candidates across Canada - you will be required to work on EST hours.

Who we are

BIMM is a Toronto-based agency that lives at the intersection of data, technology, and creativity to provide clients with high-performing campaigns and digital products that shape connected customer experiences.We’vehelped our clients implement fully integrated CRM customer journeys, built robust digital experiences, and created national loyalty programs with decades of experience in sectors of automotive, financial, telco and retail.

We are creative realists, which means our ideas and solutions are grounded in the realities of our clients’ business. We believebig ideasare nothing without big results (and flawless execution); high-performing agencies deliver high-performing campaigns, products, and experiences; and the best solutions happen when we collaborate with clients as partners.

Our Technology department is a 50+ person distributed team of Developers, QA, and Architects delivering amazing digital products on a leading-edge technology stack.

This is an existing vacancy, not a made-up role — thisone’salreadygota desk waiting.

About the engagement

You will join a multi-year program modernizing the digital platform of a major media and entertainment client. The platform is a large Ruby on Rails 8 application that serves a high-traffic public website, doubles as the editorial CMS, and acts as the integration hub for the client’s ticketing, event-management, and CRM systems.

The work spans a website refresh, a significant uplift to the CMS authoring experience, hardening of fragile third-party integrations, a new API layer supporting a companion mobile app, and security and performance work ahead of a hard seasonal traffic peak. It is a mix of greenfield feature work and careful,high-stakeswork inside an established codebase you did not write.

This is not a rewrite. We are extending and strengthening a working Rails application, not replacing it.

Whowe’relooking for

You are a Rails developer in the deepest sense you reach for theframework’sconventions rather than around them, and you are comfortable with server-rendered HTML as a first-class architecture rather than a legacy compromise. You have shipped real features withHotwireand you can explain why Turbo Frames and Streams are the right tool for a given interaction instead of reaching for a client-side framework by reflex.

You are at your best in a codebase with history. You read before you write, you can trace an unfamiliar dataflowend to end, and you know how to make a meaningful change in an area with thin test coverage without breaking things around it. You treat a flaky third-party integration as an engineering problem with a real solution rather than an unavoidablefact of life.

You have a clear understanding of security and build it into any of your services. Although you have full supportofyour teammates, you canparticipatein the research and solution to complex problems. At the same time, you know when to ask for help anddon’tlet pride or ego get in the way, because after all, you are part of a team.

You take initiative and communicate proactively in a distributed team working across time zones, writingclearlyand flagging problems early matters as much as the code. We are looking for people who bring curiosity and an appetite for figuring things out. Is this you?

Responsibilities

Application development

• Build and extend features across a Rails 8 monolithmodels, controllers, background jobs, and server-rendered views.
• Implement rich, interactive front-endbehaviorusing Hotwire (Turbo Drive, Turbo Frames, Turbo Streams) and Stimulus, styled with Tailwind CSS.
• Contribute to a sharedcomponentand view-partial library that keeps a large template surface consistent and maintainable.

CMS and content authoring

• Extend an in-house Rails CMSbroadenrich-text editing coverage, introduce reusable content snippets, and move hard-coded page regions into editable configuration.
• Help design and build a component-based page builder, including the underlying content model and migration of existing authored content.
• Work directly with editorial and marketing stakeholders to understand how authoringactually happensbeforedesigning forit.

Integrations and data flow

• Build and harden integrations with third-partyevent-management, ticketing, and CRMplatformsREST APIs, webhooks, and scheduled syncs.
• Replace brittle or manual reconciliation processes with resilient, idempotent integrations that include retry and backoff, dead-letter handling, and automated reconciliation.
• Design and operateSidekiqworkflows with attention to concurrency, ordering, and failure modes.
• Instrument integrations so failures surface early and are diagnosable without guesswork.

API layer for mobile

• Design and build a versioned API layer on the existing Rails stack to support a companion mobile app and downstream data consumers.
• Handle authentication, authorization, rate limiting, pagination, and consumer-facing documentation from the outset.
• Collaborate with mobile engineers on contract design and on serving native-specific view variants where the apprendersserver HTML.

Performance,scaleand resilience

• Profile andoptimizeapplication and database performance against sharp, predictable seasonal traffic peaks.
• Implement caching strategies that hold up when pagescontainpersonalized content — fragment and Russian-doll caching, and edge-cacheable shells with dynamically loaded personal regions.
• Support the introduction of a CDN and automated scaling in front of the existing PaaS hosting.
• Contribute to load testing ahead of known peak events.

Security and quality

• Help prioritize, execute, andvalidatesecurity remediation across an existing codebase, and build securely in all new work.
• Write meaningful automated tests unit, request, and system-level and raise coverage in the areas you touch.
• Participate in code review as both author andreviewer, andcontribute to technical acceptance criteria on tickets you pick up.

Requirements

• 5+ years building and shipping production Ruby on Rails applications, including substantial time in a large existing codebase you did not originally write.
• Production experience with HotwireTurbo Drive, Turbo Frames, Turbostreamsand Stimulus.
• Recent Rails 7 or Rails 8 experience, with a working understanding of what changed and why.
• Strong PostgreSQL skillsschema and index design, query optimization, reading EXPLAIN output, and finding and fixing N+1 queries.
• Background job design withSidekiqor equivalent idempotency, retry semantics, failure handling, and queue isolation.
• Third-party API and webhook integration experience, ideally with upstream systems you do not control and cannot fully trust. Examples: ticketing platforms, CRMs such as HubSpot or Salesforce,eventor content management systems.
• Automated testing in a server-rendered stackRSpecorMinitest, request specs, and system or integration tests with Capybara.
• Tailwind CSSand fluency in semantic, well-structured HTML.
• Accessible front-end development to WCAG 2.1 AA, including keyboard navigation, focus management, and correct use of ARIA where markup alone is insufficient.
• Authentication and authorization experiencesessionand token handling,passwordlessor magic-link flows, OAuth2/OIDC concepts, and role-based access control. Familiarity with a hostedauthprovider (SuperTokens, Auth0, Clerk) or Devise.
• Observability practice:structured logging, metrics, and APM tooling (New Relic, Datadog, Scout, or Skylight), and comfort defining what “healthy” looks like for a service.
• Git and pull-request based collaboration, with clear commit history and review-ready changes.
• Professional fluency in written and spoken English, and the ability to work with at least four hours of daily overlap with Eastern Time.

Nice to have

• Deployment on a managed PaaS:Heroku or comparable plus AWS S3 for asset storage.
• Hotwire Native(formerly Turbo Native) on iOS or Android:path configuration, bridge components, or native screen integration. This is a significant differentiator for this engagement.
• CMS and contentmodellingin RailsAction Text or Trix,ViewComponentorPhlex, block-based or component-based page builders.
• Search infrastructurePostgreSQL full-text search at scale, or Elasticsearch, OpenSearch,Typesense, orAlgolia, including faceted filtering and relevance tuning.
• High-traffic or event-driven traffic patternsticket on-sales, launches, or seasonal spikes and load testing ahead of them.
• CDN and edge caching alongside personalized contentFastly, Cloudflare, or similar.
• Security remediation experienceBrakeman, bundler-audit, dependency triage, and familiarity with the OWASP Top 10 in a Rails context.
• Rails and Rubyversionupgrade work, including dependency and gem migration in a large application.
• Analytics and marketing instrumentationGA4, Google Tag Manager, conversion and funnel event tracking, consent handling.
• Domain exposureinmedia, entertainment, live events, ticketing, or membership and subscription products.

What’sin it for you?

• Work Life Balance with BIMM days: Spend your birthday any way you’d like, as long as it’s not at the office.Extra day off to enjoy every summer holiday and a week-long end-of-year break. Boo-yah!
• Benefits: We offer a comprehensive health & dental benefits plan with an Employee Assistance Program.BIMMersare also given extra $$$ to put towards wellness or health-related needs. Did we mention ourRRSP withmatching? AlilBIMM bonus to build your bank.
• Culture: Our squad is fun,friendlyand entirely egoless. Our social committee plans BIMMbashes,TastyThursdays and quarterly outings like candle making workshops, board game nights, Jays games and cooking classes. Our summer and holiday parties are quite memorable as well! Having FunEverydayis one of our core values.
• We believe in working& meetingwith purpose. Weobservea hybrid working model in our beautiful dog-friendly officelocatedin the Distillery District, stuffed with snacks.
• Belonging: Our dedicated DEI committeeprovidesthought-provoking insights which are reflected in our work; They also organize engaging awareness activities and events toshowcaseBIMMER’s professional talents and personalities. What talents might you bring? :)
• Growth: BIMM is part of kyu collective which gives our employees access to the network’s resources, training, offices, and more. We also prioritize your personal and professional development with opportunities like on-site Lunch n’ Learns, conferences and online courses. Love 2 Learn

BIMM is committed to providing an environment that is inclusive and accessible. We are an equal opportunity employer and consider all applicants for employment without discrimination. Please let us know if accommodation for the recruitment/interview process isrequiredand we will work with you to make sure your needs are met.

AI in recruitment

While we are exploring ways to bestutilizeAI in our hiring processes, BIMM currently does not use AI-enabled tools in our hiring process. All candidates are screened byhumans, andapproved by humans.

The range of annual base salary for full-time employees for this position is below. Please note that base pay offered may vary depending on factors including your city of residence, job-related knowledge, skills, and experience.

Total compensation range:

$80,000—$130,000 CAD