11,000 Kotlin jobs
Open roles that use Kotlin for Android and JVM backends.
Senior Site Reliability Engineer
Build and operate the Kubernetes-based cloud platform powering Develocity, Gradle's AI-native observability and intelligence platform, ensuring high availability and performance for enterprise and OSS users.
Java Driven Developer Job
A senior Java backend consultant in Amsterdam who builds microservices, API integrations and event-driven data flows using Java, Spring Boot, Apache Kafka and Docker/Kubernetes, working on technically challenging consultancy assignments in a collaborative team.
Java Craftsmanship Engineer
A senior Java developer (5-7 years) who builds high-quality backend applications, microservices, and REST APIs with Java and Spring Boot on varied consultancy assignments at different organizations. Daily work involves coding, automated testing, code reviews, and contributing to architecture, with Docker/Kubernetes and Kafka or Kotlin as extras.
Senior Software Developer
Senior developer building production software: new services mainly in Kotlin/JVM plus maintaining and modernizing existing PHP applications, with APIs and integrations between business and ERP systems. The role includes architecture input, code reviews, mentoring and collaboration with consultants and clients.
Test Engineer (Medior)
Medior test engineer at EDSN in Amersfoort (hybrid, 32-40h) building and maintaining automated tests within CI/CD for software that supports the Dutch energy transition and a stable energy grid. Works inside a DevOps team doing integration, chain and end-to-end testing with Java/Kotlin and tools like Playwright or Cypress.
Security Analyst (Android / iOS)
Research, design, and implement mobile security protections for Android/iOS apps, including RASP countermeasures and reverse engineering to thwart attacks.
Senior UI React Developer
ClearScale, an AWS Premier Consulting Partner, seeks a senior frontend developer to build UIs for AWS-hosted multi-tenant SaaS projects. Day to day: implementing responsive, cross-browser frontends with React/TypeScript, shaping UX with the design team, stabilizing code with QA, and optimizing performance on AWS-based client projects.
Senior Software Engineer
Senior full-stack engineer at Mobility Global/CARFAX in Gdansk building US-market web applications and cloud microservices with Java/Kotlin, Spring, TypeScript, React, and AWS infrastructure-as-code (Terraform/CDK), while mentoring junior developers in an agile team spanning Poland and the US.
Lead Android Engineer
Senior individual-contributor role at Dyson in Singapore, owning and shaping the architecture of the MyDyson IoT companion app (2M+ users, 8M+ connected machines). Day-to-day: hands-on Kotlin/MVVM Android development, leading cross-team technical initiatives, and mentoring, using Jetpack, Retrofit, AWS IoT SDK, Dagger, and coroutines.
Full-Stack Engineer (24 Months Contract)
Full-stack engineers modernise a Singapore public sector digital service, migrating legacy apps to a cloud-native, containerised AWS platform. Work spans React/TypeScript and Next.js frontends, Golang/Kotlin backend services, Terraform IaC, GitLab CI/CD, EKS deployments, Singpass/Corppass identity integration, and production support.
DevSecOps Engineer (24 Months Conract)
24-month contract role building and operating secure, cloud-native, containerised AWS infrastructure (Terraform, EKS/ECS, RDS) for a Singapore public sector modernisation project. Day to day: IaC provisioning, cloud security controls, security scanning in GitLab CI/CD, observability, backups, and production incident support.
Senior Software Engineer
Senior full-stack engineer in Gdańsk building web apps and cloud API-based microservices for CARFAX's US-market vehicle history products, using Java/Kotlin with Spring on the backend, TypeScript with React on the frontend, and AWS with IaC (Terraform/CDK); also mentors junior developers and collaborates across Poland and US teams.
Senior Mobile Developer
About Brim Brim Financial is a category defining fintech, building the operating system for credit cards and payments. Our platform powers card programs for banks, credit unions, fintechs, and global brands across…
Sviluppatore App Mobile (iOS/Android) – Flutter, Remote
Humans.Tech cerca sviluppatori Applicazioni Mobili per lavorare su interfacce intelligenti e performance elevate. Il ruolo richiede esperienza in sviluppo nativo iOS (Swift/SwiftUI) e Android (Kotlin/Jetpack Compose),…
Sviluppatore App Mobile: iOS/Android, Flutter, Remote
Humans.Tech è alla ricerca di sviluppatori applicazioni mobili per guidare progetti innovativi a Firenze e oltre. Cerchiamo esperti in iOS/Android nativi (Swift/Kotlin) e Flutter, con attenzione a UI/UX, performance e…
Sviluppatore App Mobile d'élite: iOS/Android & Flutter
Humans.Tech cerca uno Sviluppatore Applicazioni Mobili per Piacenza. Ruolo full‑time con possibilità di ibrido o remoto, sviluppo in iOS/Android e Flutter, attenzione a performance, accessibilità e localizzazione.…