Senior Backend Software Engineer, Ruby on Rails

Pennylane

. Understand and frame user and product problems .

Posted 9/18/2026full-timeRemoteSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates extensive experience in Ruby on Rails development, with a strong focus on delivering reliable, scalable, and user-focused products. Capable of mentoring teams, improving engineering practices, and effectively communicating technical concepts.

Highest-signal resume keywords

Ruby On Rails DevelopmentMonitoring And ObservabilityData AnalysisTechnical MentorshipCollaborative Problem Solving

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

Ruby On RailsProblem DefinitionTechnical DeliveryScalable Product DesignProduction OperationsPerformance ImprovementCode ReviewsPair ProgrammingDocumentationAI-Assisted Development

Soft Skills

Strong CommunicationCollaborative ApproachOwnership Of Delivery

Industry Keywords

User-Focused ProductsTechnical Content ContributionIncident ResolutionTech InitiativesOnboarding

Tech Stack

Tools & technologies

RubyRuby on Rails

About the role

Key responsibilities & impact

Understand and frame user and product problems
Lead significant technical deliveries within the squad from problem definition through production operation
Design, implement, test, and operate reliable, scalable, user-focused products
Investigate and resolve complex production issues using monitoring, observability, and data analysis tools
Identify performance, scalability, and reliability opportunities and implement technical improvements
Become autonomous on high-impact initiatives within a few weeks when joining a new team
Improve engineering practices through code reviews, pair programming, documentation, RFCs, and AI-assisted development
Mentor engineers, share knowledge, provide actionable feedback, and improve team technical skills
Collaborate with other teams and communicate progress, risks, decisions, and results
Contribute to the tech community through technical content, onboarding, interviews, incident resolution, tech initiatives, and meetups

Requirements

What you’ll need

At least 7–8 years of hands-on experience with Ruby on Rails
Strong technical expertise in at least one major part of the stack
Strong product and business understanding
Ability to solve complex problems and deliver reliable, pragmatic solutions
Strong communication skills and ability to articulate ideas clearly
Collaborative approach and ownership of delivery
Right to work in the European Union
Must be based in Europe, within a maximum time difference of two hours from CET
No visa sponsorship; candidates must already have the right to work in the European Union
Experience with monitoring, observability, data analysis, code reviews, pair programming, documentation, RFCs, and AI-assisted development

Benefits

Comp & perks

30 paid vacation days
Company shares
Home workspace budget
Monthly coworking-space allowance
Gymlib access to 8,000 fitness spaces in Europe and more than 300 wellness activities
Busuu language-learning access for English or French
Latest Apple equipment
Company events, including quarterly Tech Days and an annual company seminar
For France-based employees: 6–13 RTT, 5 weeks PTO, lunch credits via Swile, Alan Blue healthcare cover, and regular city events
Competitive compensation package