Senior Mobile Engineer

At Ageras, we are redefining how entrepreneurs—freelancers, self-employed professionals, and SMEs—manage their banking, and administrative tasks. Through seamless tools and innovative accounting & banking solutions, we help them focus on what matters most: growing their businesses.

Our vision is to become the best friend of every small entrepreneur across Europe.

Over the years, Ageras has grown through the merging of top European FinTechs like Shine (), Kontist (), Tellow (), and more. Today, we're a team of nearly 500 people working together from Paris, Amsterdam, Copenhagen, and Berlin.

The Frontend Ops team at Shine

You'll join a small but pivotal Frontend Ops team (Head of Frontend, Web Engineer, and you) dedicated to building the foundations that let product teams move faster and more consistently. You'll pair strategic thinking with hands-on React Native engineering, shape the mobile architecture vision, and partner closely with design to create a shared design system that truly bridges Figma and code.

Your role as a Senior Mobile Engineer (Frontend Ops)

As Senior Mobile Engineer at Shine, you'll be the hands, the craft, and the steady voice driving mobile excellence across our rapidly evolving SaaS universe. With six customer-facing applications—three web, three mobile—each with its own quirks, build systems, and styling approaches, we're unifying how we deliver great product experiences across platforms.

This is a unique opportunity to define how mobile is built at Shine, improve developer experience, streamline QA and production releases, and make it simple for product squads to ship high-quality features across both iOS and Android.

Your responsibilities will include:

• Strategy & Architecture
  • Co-define Shine's mobile architecture vision with the Head of Frontend and Web Engineer, ensuring it meshes with the broader frontend consolidation effort
  • Contribute to the design system strategy—design tokens, component APIs, and shared UI patterns that span mobile and web
  • Advocate good practices, tooling, and workflows that make mobile development approachable for all engineers
• Technical Ownership
  • Lead hands-on development in React Native + Expo, ensuring a robust, maintainable codebase
  • Shape and maintain CI/CD pipelines and release automation (EAS, GitHub Actions, Firebase, App Store Connect, Play Console)
  • Ensure QA and production build and release processes are smooth, well-documented, and easy for stream-aligned teams to use
  • Act as the go-to expert for signing, submissions, and store compliance, unblocking teams when issues arise
  • Ensure testing strategies (Jest, Detox, Maestro) are well integrated into the mobile workflow
• Collaboration & Enablement
  • Work in lockstep with the design team to align Figma tokens and components with live code, creating a tight feedback loop
  • Support and mentor engineers in stream-aligned teams, helping them confidently deliver mobile features on top of shared foundations
  • Document architecture, decision records, and developer-friendly guides that enable contribution without gatekeeping

Job located in Copenhagen, Paris, Berlin, Gdansk or Amsterdam, with possibility of two remote working days per week

What Success Looks Like

• Proven experience building and scaling React Native applications in a SaaS or platform environment
• Strong knowledge of Expo, EAS, and mobile CI/CD pipelines
• Deep understanding of App Store & Play Console processes, signing, and release management
• Solid experience implementing and maintaining testing strategies (Jest, Detox, Maestro)
• Passion for developer experience, documentation, and sharing knowledge across teams
• Excellent cross-functional collaboration skills—able to partner with design, product, and engineering managers

About you

• Proven experience building and scaling React Native applications, with strong knowledge of Expo, EAS, mobile CI/CD pipelines, and prior exposure to Expo Custom Native workflows
• Comfortable navigating iOS and Android projects to debug builds, integrate config plugins, or adjust local modules
• Deep understanding of App Store & Play Console processes, signing, and release management
• Solid experience implementing and maintaining testing strategies (Jest, Detox, Maestro)
• Passion for developer experience, documentation, and knowledge sharing
• Excellent cross-functional collaboration skills—able to partner with design, product, and engineering managers
• Some Nice-to-Have :
  • Experience shaping a mobile design system (tokens, component libraries), integrating Storybook or Figma, and familiarity with multiple styling solutions or cross-platform UI strategies
  • Familiarity with monorepo tooling (Turborepo, Nx) and knowledge of Swift or Kotlin for mobile development
  • Contributions to open source or active involvement in the mobile engineering community are a plus

Equal Opportunity Employer

We follow the principle of equal treatment to consider all job applicants and do not discriminate based on their gender, sexual orientation, color, racial or ethnic origin, religion, disability, etc. as per applicable law.

Our recruitment process

An initial conversation with Alexandre (Senior Software Engineer - Frontend Ops) and Allan (VP of Platform), to understand your background, motivation, and expectations.

A technical interview with a live coding session and discussion with Alexandre and several members of the team

A finale interview when we will talk about your soft skills with a personality test, and you will meet your potential future colleagues..

What's In It For You?

• Compensation : A salary range between €65k/85K per month, depending on level of experience and skills set, and location.
• Remote Work Culture: Work from our Copenhagen, Paris, Berlin, Gdansk or Amsterdam office, with possibility of remote working days.
• Scale-Up Impact: Work in a high-growth environment backed by 500 passionate people across Europe and multiple acquisitions under our belt. Your work will have direct, measurable impact on our growth journey.
• Events and Travels : Regular team events, international trips, and cross-European networking opportunities

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