Mid-Senior Android/Kotlin Developer

Lead Mobile Engineer (Android) - Belfast (Hybrid)

Please note candidates should reside in to apply for this role.
Salary: Competitive base + share options + market-leading benefits

Role Overview

Our client is a rapidly expanding health tech company that's transforming the lives of people with neurological conditions. Backed by recent multi-million-pound funding and marked commercial successes, they are scaling fast with mission-driven products, stability, and impactful technology.

In this pivotal Mid-Senior Android/Kotlin Developer role, you'll work closely with our Lead Mobile Engineer and report to the CTO. You'll be instrumental in building our next-generation Android mobile experience working in a collaborative environment where your contributions are visible and highly impactful.

What You'll Do

• Design, develop, and maintain sleek Android applications using Kotlin.
• Integrate seamlessly with RESTful APIs and cloud services (e.g., AWS, Heroku).
• Drive app performance, debug issues, and ensure top-tier mobile experiences.
• Build robust code with strong unit and integration test coverage, embracing TDD.
• Collaborate with product, UX, backend, QA, and cloud teams to deliver polished features.
• Participate in code reviews and discussions on architecture and design.
• Mentor junior developers and advocate for engineering best practices.

Required Qualifications & Experience

• Proven experience in Android development using Kotlin (Java is a boon).
• Strong understanding of Android SDK, app lifecycle, and modern architectures (e.g., MVVM).
• Familiarity with REST APIs, JSON, and cloud-based backend integrations.
• Skilled in writing tests and applying TDD for high-quality, maintainable code.
• Comfortable with version control (particularly Git) and collaborative workflows.
• Excellent communicator, both written and verbal, with a team-oriented mindset.
• A passion for programming craftsmanship and delivering excellence.

Preferred (Nice-to-Have) Skills

• Bluetooth Low Energy (BLE) app development experience.
• Backend knowledge, ideally with Python/Django.
• Exposure to regulated environments (e.g. healthcare, automotive).
• Familiarity with Jira, CI/CD tools such as GitLab CI.
• Experience with Jetpack Compose, Coroutines, or modern Android tooling.

Working Conditions

• Belfast-based hybrid role: flexible in-office and remote work balance.
• Standard flexible working hours, with some alignment to project needs.

Compensation & Benefits

• Competitive salary tailored to your experience.
• Share options for long-term growth.
• Private health insurance.
• Flexible working hours and hybrid setup.
• Generous training and development budget.
• Be part of a scaling, well-funded health tech company with global ambitions.

Reporting Structure

You will directly report to the CTO and work alongside the Lead Mobile Engineer. While there's no direct managerial responsibility, you'll offer guidance and mentorship to more junior team members.

Why Join Us

• Influence products that truly matter supporting people
• Benefit from a well-funded, scaling startup while enjoying stability and innovation.
• Work in a collaborative, values-driven environment committed to impact and growth.

How to Apply

Think you're a fit? Apply via the job link or contact Phil Gamble directly via LinkedIn or WhatsApp for an informal chat.

About Phil Gamble:

A seasoned tech recruiter with 20+ years of experience across the UK, US, and Ireland-Phil brings a personalised, candidate-first approach. His dedication to understanding your career goals has earned glowing testimonials: Phil is a professional who does not treat his candidates as resources... Phil was by far the best recruiter I have ever dealt with... Phil takes the time to understand what it is I'm looking for...

We are an equal opportunities employer and welcome applications from all qualified candidates.