Senior Full Stack Kotlin Developer

Salary: £59,000 - 99,000 per year

• Extensive experience in Kotlin and 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 contributing to the delivery of 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
• Proficient in using CI/CD tools such as Jenkins or Azure DevOps
• Desirable: previous experience working on GOV/NHS projects or in a consultancy environment
• Desirable: knowledge of Kafka or other asynchronous messaging systems
• Desirable: knowledge of Helm

• 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, concise manner
• Mentor and coach other engineers to support their professional development
• Act as a Senior Consultant delivering Kotlin development services to our clients
• Lead by example and ensure technical excellence within squads

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

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We are Hippo, a rapidly growing digital consultancy that works at the intersection of strategy, design, and technology to solve complex problems and create lasting value for public and private sector clients. We design with empathy and build for impact through data-informed evidence, human-centred design, and software engineering. Our collaborative, agile culture empowers our teams to make a genuine impact, and we offer a competitive salary along with a strong benefits package including pension contributions, 25 days holiday plus UK public holidays, 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 the role may require travel and working on-site at least two days per week depending on client needs. We are committed to diversity, equity, inclusion, and accessibility, and we actively encourage applications from underrepresented groups.

last updated 36 week of 2026