Senior Fullstack Engineer – Ruby/React & TS (Remote Europe)

Pennylane; France; Remote; EUR 90,000 - 130,000; Full time

Benefits offered by this job

30 vacations days

Company shares

Annual budget for home workspace

Monthly coworking allowance

Gym Lsubscription via Gymlib

Busuu access

Apple equipment

Company events

France-specific contract perks (RTT, 5

Lunch credits (Swile)

Job summary

Pennylane is hiring a Senior Software Engineer to build reliable, scalable, user‑focused financial software for French SMEs and European clients. You will lead impactful technical work, mentor peers, and drive quality through code reviews, testing and observability.

Join a fast-growing fintech with remote-friendly policies, strong engineering culture, and opportunities to shape cross‑country initiatives while delivering value to thousands of customers and firms in Europe.

Qualifications

• Strong hands-on experience with Ruby on Rails and React (at least 7-8 years).
• Combine technical expertise with strong product and business understanding, enjoy solving complex problems and care deeply about your users.
• Are a collaborative team player, communicate clearly and take ownership of delivering reliable, pragmatic solutions.
• Like being challenged and solving complex problems (accounting is complex in Europe).
• Have strong communication skills and are capable of articulating your ideas clearly.

Responsibilities

• Understand and frame user and product problems, using your product knowledge to help your squad deliver simple, pragmatic and valuable solutions.
• Lead significant technical deliveries within your squad, from understanding the problem to designing, implementing, testing and operating the solution in production.
• Investigate and resolve complex production issues, using monitoring, observability and data analysis tools to identify root causes and prevent recurrence.
• Design and evolve robust solutions, identifying performance, scalability and reliability opportunities and turning them into pragmatic technical improvements.
• Bring strong expertise in at least one major part of our stack, while being able to join a new team and become autonomous on a high-impact initiative within a few weeks.
• Improve engineering practices across the organization, through high-quality code reviews, pair programming, documentation, RFCs and the adoption of AI-assisted development without compromising software quality.
• Act as a role model and a driver for other engineers, sharing knowledge, providing actionable feedback and helping the team continuously improve its technical skills and ways of working.
• Collaborate effectively with other teams when needed, proactively unblocking technical topics and clearly communicating progress, risks, decisions and results to the relevant stakeholders.
• Contribute to the Pennylane tech community, through technical content, onboarding, interviews, incident resolution, tech initiatives, meetups or other community-building activities.

Skills

Ruby on Rails

React

Job description

Pennylane is hiring a Senior Software Engineer to build reliable, scalable, user‑focused financial software for French SMEs and European clients. You will lead impactful technical work, mentor peers, and drive quality through code reviews, testing and observability.

Join a fast-growing fintech with remote-friendly policies, strong engineering culture, and opportunities to shape cross‑country initiatives while delivering value to thousands of customers and firms in Europe.