Senior Mobile Developer (React Native)

Oak Engage; United Kingdom; On-site; GBP 60,000 - 90,000; Full time

Job summary

A leading SaaS company in the UK is seeking a Senior Mobile Developer to enhance its cross-platform mobile app. This hands-on role requires deep React Native expertise and a product-driven mindset. Join a dynamic team focused on shaping the future of employee engagement across various sectors. The position offers remote flexibility and generous benefits including private health insurance and a supportive work culture.

Benefits

Private health insurance

Life insurance

Gym contribution

Travel allowance

Generous holiday policy

Qualifications

• 5+ years in mobile development with 3+ years in React Native.
• Experience with mobile architecture and performance optimisation.
• Strong background in delivering scalable, secure apps.

Responsibilities

• Lead mobile development for both iOS and Android using React Native.
• Own mobile architecture decisions and mentor developers.
• Integrate APIs and manage mobile app lifecycle.

Skills

React Native expertise

JavaScript/TypeScript skills

Mobile SDKs and APIs familiarity

Production-grade app delivery

Native modules experience

Ownership mindset

Job description

Location: Remote (UK Based)
Reports to: Engineering Manager
Type: Full-time

Join Oak Engage – Where Communication Meets Connection

At Oak Engage, we’re on an exciting growth journey—backed by a major investment from NorthEdge to scale our impact and redefine the future of employee engagement. Trusted by some of the UK’s biggest brands, including Aldi, Five Guys, and ITV, we help organisations connect, engage, and empower their people through smarter, more personalised internal communication. With our next stage of expansion underway, we’re building a team of bold, ambitious thinkers ready to make their mark at a high-growth, purpose-driven SaaS company. If you’re looking to shape the future of work and grow alongside a company that’s going places, now’s the time to join Oak.

About the Role

We’re looking for a Senior Mobile Developer with deep React Native expertise to lead development of Oak’s cross-platform mobile app. You’ll take ownership of the mobile experience—shaping its architecture, performance, and future roadmap—while ensuring our users can stay connected wherever they work.

This is a hands-on, high-impact role suited to someone who combines deep technical ability with a product-driven mindset.

What You’ll Do

• Lead mobile development using React Native for both iOS and Android
• Own mobile architecture decisions and performance optimisation
• Work closely with product, design, and backend teams to deliver seamless mobile features
• Integrate APIs and manage mobile app lifecycle including App Store/Play Store submissions
• Stay on top of mobile trends, frameworks, and tooling to keep Oak at the cutting edge
• Mentor other developers and ensure best practices in mobile development

What We’re Looking For

• 5+ years in mobile development with 3+ years in React Native
• Strong JavaScript/TypeScript skills and deep familiarity with mobile SDKs and APIs
• Experience delivering production-grade apps with scale, security, and analytics in mind
• Experience with native modules, push notifications, and offline functionality
• Ownership mindset and passion for building great mobile user experiences

Why Join Oak?

• A meaningful role in a mission-led SaaS company with strong growth and product-market fit
• The chance to work with household brands and solve real-world enterprise challenges
• Flexible hybrid or remote working options
• Private health insurance, life insurance, and Employee Assistance Programme (EAP)
• Gym contribution and travel allowance
• Enhanced maternity, paternity, and discretionary leave
• Generous holiday policy (25 days + Bank Holidays + additional discretionary days)
• Regular team socials and a positive, collaborative culture

Our Recruitment Process

Hiring Manager Interview

• Deep dive into architecture, problem-solving, and team contributions
• Assess communication and curiosity

Technical Task or Live Pairing

• Realistic, time-bound task or live coding session
• Use structured rubric for fairness (avoid freeform “whiteboarding”)
• "Focus on team collaboration, code quality, and feedback"

Peer Technical Panel/Culture Fit / CTO Chat - In person at our NCL HQ

• Includes cross-functional devs, product manager or designer
• Assess long-term growth potential and alignment with tech principles
• Opportunity for candidate to ask strategic questions

Equality & Diversity at Oak

At Oak, we’re committed to building a diverse and inclusive workplace where everyone feels welcome, supported, and able to thrive.

We believe that different perspectives make us stronger, and we actively encourage applications from people of all backgrounds, experiences, and identities — including, but not limited to, race, ethnicity, gender, age, disability, sexual orientation, and socio-economic status.

We are an equal opportunities employer. All hiring decisions are based on business needs, role requirements, and individual qualifications — without bias or discrimination.

If you require any adjustments to the interview process or the role itself to support accessibility, please let us know — we’re happy to help.