Senior Full Stack Kotlin Developer

Salary: £57,500 - 72,000 per year

• Extensive experience in Kotlin and the JVM.
• Strong experience in Java and the full development lifecycle delivering user-centred digital solutions.
• Exposure to Node.js, TypeScript, Express.js, or Nunjucks.
• Proven track record of delivering high-quality, robust, and scalable solutions.
• Expertise in building back-end services using Spring Boot and the wider Spring Framework.
• Experience in microservices design and architecture, including RESTful API services.
• Strong knowledge of public cloud platforms such as AWS, Azure, or GCP, and DevOps practices including containerisation with Docker and Kubernetes.
• Proficiency in Infrastructure as Code tools such as Terraform.
• Proficiency with CI/CD tools such as Jenkins or Azure DevOps.
• Previous experience working on government or NHS projects, or in a consultancy environment, is desirable.
• Knowledge of Kafka or other asynchronous messaging systems is desirable.
• Knowledge of Helm is desirable.

• Lead the production of user-centred software, ensuring development follows business requirements and best practice.
• Work collaboratively with colleagues and stakeholders to explore, design, and deliver solutions to complex client problems.
• Take ownership of software development and deployment pipelines, resolving issues and potential bottlenecks.
• Communicate and present prototypes, solutions, and progress to internal and external stakeholders in a clear and concise manner.
• Mentor and coach other engineers to support their professional development.
• Deliver Kotlin development services to our clients as a Senior Consultant.
• Lead by example and ensure technical excellence within squads and the engineering community.

• API
• AWS
• Azure
• CI/CD
• Cloud
• DevOps
• Docker
• GCP
• Helm
• Support
• JVM
• Java
• Jenkins
• Kafka
• Kotlin
• Kubernetes
• Spring
• Spring Boot
• Terraform
• TypeScript
• microservices
• NodeJS
• ExpressJS
• Fullstack

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We are Hippo, a rapidly growing digital consultancy that designs with empathy and builds for impact by combining data-informed evidence, human-centred design, and software engineering. We work with public and private sector clients to deliver transformative digital solutions, and our collaborative, agile culture empowers teams to make a genuine impact. We offer a competitive salary and a wide range of benefits including pension, holiday allowance, wellbeing support, flexible benefits, and relocation support of up to £8,000. We are headquartered in Leeds with offices across the UK in Glasgow, Manchester, Birmingham, London, and Bristol, and this role is hybrid remote in Leeds with flexibility to work on-site at our office or client locations.

last updated 36 week of 2026