Senior Mobile Engineer; React Native & Frontend

Senior Mobile Engineer (React Native & Frontend)

Department: Technology

Employment Type: Full Time

Location: UK Remote

Discover One Ocean:
One Ocean is a unified brand born from the integration of One Ocean and Ocean Technologies Group. Owned by Lloyd’s Register, an organisation with more than 260 years of trust, integrity and leadership at sea, One Ocean combines the agility and ambition of a fast‑moving innovator with the strength and stability of one of the world’s most trusted maritime institutions.

At the heart of One Ocean is a portfolio unlike any other in maritime. A comprehensive, integrated portfolio built on years of expertise, trusted by thousands of maritime professionals around the world. Our mission is clear. In the race to zero emissions, our research, advisory and technical expertise and industry‑firsts are supporting a safe, sustainable maritime energy transition. Today we are a leading provider of classification and compliance services to the marine and offshore industries, helping our clients design, construct and operate their assets to accepted levels of safety and environmental compliance.

Legacy & Innovation:
We were created more than 260 years ago as the world’s first marine classification society to improve and set standards for the safety of ships.

Global Impact:
Our digital solutions are relied upon by more than 30,000 vessels, following the acquisition of One Ocean in 2022 and Ocean Technologies Group in 2024.

Product Offering:
Covering five proven product areas—learning, fleet operations, compliance, voyage planning and performance management—supporting our customers from ship to shore, from training and people operations, to voyage compliance and optimisation.

We have a proven concept and a solid foundation, now, we need a seasoned Senior Mobile Engineer to take our React Native proof‑of‑concept and evolve it into a polished, production‑ready application. You won’t just be writing code; you’ll be the architect of our mobile user experience. We are looking for a “Product Engineer”—someone who cares as much about the user experience and the UI storyboard as they do about clean, scalable architecture.

You should have deep hands‑on experience shipping commercial apps in both stores (App Store / Google Play), and comfort working in both native and cross‑platform environments.

• Ship to Production: Take full ownership of the lifecycle for both iOS and Android platforms.
• Elevate the Frontend: Use your expert knowledge of React Native and CSS‑in‑JS to build beautiful, responsive, and accessible interfaces.
• Architect for Growth: Introduce best practices, coding standards, and design patterns that will allow us to scale the team and the codebase.
• Automate Everything: Maintain and improve our CI/CD pipelines within Azure Dev Ops to ensure seamless, automated deployments.
• Collaborate: Work within a loose Agile/Sprint framework, contributing to storyboarding, and regular sprint planning meetings.
• Code Quality: Ensuring high code quality through unit/UI testing, code reviews, and static analysis tools.

You are a senior‑level developer who is "hands‑on" by nature, you don't want to sit in architectural meetings all day; you want to build great products.

• React Native Expert: You have a track record of shipping production‑grade apps and understand the nuances of the bridge, native modules, and performance tuning.
• Design‑Led: You have a keen eye for UX/UI. You understand storyboards and can realise Figma designs into production‑ready components.
• Tooling Savvy: You are comfortable with Azure Dev Ops
  , including managing pipelines, boards, and releases.
• Pragmatic Mentor: You enjoy helping others. You’re happy to peer‑review code and set the standard for future junior developers.
• Agile Mindset: You’re comfortable with the iterative nature of a growing product and can thrive in a sprint‑based environment.

• Experience: Multiple years of commercial experience building and shipping production mobile applications.
• Core: React Native (iOS & Android), Type Script.
• State & Styling: Your preferred modern styling stack.
• Dev Ops: Azure Dev Ops (Pipelines & Boards).
• Testing: Jest, React Native Testing Library.
• Performance: Familiarity with performance profiling tools.
• Security: Implementation of offline support, secure storage (Keychain / Keystore), biometric auth, and encryption.

• Complexity: Previous work on high‑traffic / consumer‑facing apps or apps with complex business logic.
• Comms: Exposure to REST structured application interfaces, and real‑time features (Web Sockets, push notifications, etc).
• Accessibility: Internationalisation, theming, and adaptive layouts.
• Mentoring: Experience mentoring or leading small mobile teams / features.