Mobile Application Developer (Kotlin Multiplatform)H2 Cognitive Designs • London, England, United Kingdom
Mobile Application Developer (Kotlin Multiplatform)
H2 Cognitive Designs
- London, England, United Kingdom
- London, England, United Kingdom
Über
*H2 Cognitive Designs | London, Hybrid | Full-time | 12-month FTC (likely extension) | Immediate start*
*Company Description:*
H2 Cognitive Designs (H2CD) develops cognitive testing and remote clinical assessment tools for healthcare providers, academic institutions, and defence and research partners. Our flagship platform, *Cognitron*, is used across the NHS, UK and allied defence programmes, and international research programmes, and is the designated cognitive outcome platform for TBI-REPORTER, the UK's NIHR-backed traumatic brain injury research infrastructure. You may recognise our work from BBC2 Horizon's Great British Intelligence Test (370,000+ participants).
*Cognitron Health* is progressing through FDA 510(k) submission, and we hold one of the world's largest normative cognitive datasets, enabling benchmarking across a wide range of mental health and neurological conditions.
Our mission is to build innovative, high-quality tools that measurably improve cognitive and clinical assessment at scale.
*Role Description:*
This is a full-time *hybrid role based in Greater London*, with a mix of office and home days. You will design, develop, and maintain our mobile applications for iOS and Android using Kotlin Multiplatform (KMP) and Compose Multiplatform, directly contributing to the scalability, performance, and clinical utility of our flagship products.
You will also work on our web backend (Python, Django, Postgres) where it intersects with mobile workflows, and contribute to forthcoming wearable device integration for passive cognitive and physiological data collection.
*Key responsibilities:*
* Design, develop, and maintain mobile applications using Kotlin Multiplatform and Compose Multiplatform
* Apply object-oriented programming principles and modern mobile architecture patterns
* Integrate mobile clients with Django backend APIs, including FHIR R4 clinical interoperability endpoints
* Contribute to web application development that supports mobile workflows
* Participate in wearable device integration (BLE, embedded data pipelines) as that programme matures
* Troubleshoot, debug, and optimise applications for performance and reliability
* Collaborate with cross-functional teams across engineering, clinical, research, and regulatory domains
* Participate in code review, architectural decisions, and continuous improvement of our delivery practices
*Qualifications:*
_Must have_
* Proficiency in mobile application development, with hands-on experience in *Kotlin Multiplatform and Compose Multiplatform* in production or near-production environments
* *iOS development experience* (required, for platform-specific KMP work)
* Strong command of object-oriented programming and clean architecture patterns
* Working knowledge of *Python* (you will on occasion read and write Django code)
* Experience with Git and modern version control workflows
* Strong problem-solving and analytical skills
* Excellent written and verbal communication
* *UK right to work (non-negotiable, due to client sensitivity and regulatory requirements)*
* Able to attend our London office on required days (hybrid working)
_Nice to have_
* Bachelor's degree in Computer Science, Software Engineering, or a related field
* JavaScript experience (our cognitive task codebase is substantial)
* Experience in regulated environments: healthcare, medical devices, social care
* Familiarity with FHIR, SAML, or enterprise SSO
* Experience with wearable devices, BLE, or embedded sensor integration
* Cloud-based infrastructure experience (AWS preferred)
* Exposure to agile delivery practices
*Full Stack:*
* *Mobile:* Kotlin Multiplatform, Compose Multiplatform
* *Backend:* Django, Python, Postgres, Redis
* *Infrastructure:* AWS (ECS, CloudFront, RDS), Terraform
* *Web frontend:* Django SSR with HTMX
* *Interoperability:* FHIR R4, SAML 2.0, Keycloak
*What we offer:*
* 12-month fixed-term contract with strong likelihood of extension
* Hybrid working from our London office
* Flexitime, Monday to Friday
* Company pension
* Employee discount scheme
* Work-from-home equipment for home days
* Competitive salary, discussed at first interview based on experience
* *Immediate start available*
*How to apply*
Apply directly through LinkedIn with your CV and a short note on your Kotlin Multiplatform experience. Links to relevant projects, GitHub, or technical writing are welcome and will accelerate your application.
We review every application and respond quickly to strong candidates.
* _H2 Cognitive Designs is an equal opportunity employer. We are committed to building a team that reflects a broad range of backgrounds, perspectives, and experiences._
Job Types: Full-time, Permanent, Fixed term contract
Contract length: 12 months
Pay: £45,000.00-£60,000.00 per year
Ability to commute/relocate:
* London: reliably commute or plan to relocate before starting work (required)
Experience:
* Kotlin Multiplatform: 1 year (required)
Work authorisation:
* United Kingdom (required)
Work Location: Hybrid remote in London
Sprachkenntnisse
- English
Hinweis für Nutzer
Dieses Stellenangebot stammt von einer Partnerplattform von TieTalent. Klick auf „Jetzt Bewerben”, um deine Bewerbung direkt auf deren Website einzureichen.