11,087 Kotlin jobs
Open roles that use Kotlin for Android and JVM backends.
Staff Backend Engineer
Designs and builds high-scale backend systems that plan, distribute, and fulfill millions of e-commerce orders in real time using Kotlin/Java, optimization solvers, and distributed architectures.
Manager, Back-end Engineering (Rocket Pay)
Leads a backend engineering team at Coupang Pay, building scalable fintech payment and financial services for Coupang’s platforms using Java/Spring/Kotlin and microservices.
Staff Back-end Engineer (Rocket Pay)
Staff backend engineer on Coupang Pay's Rocket Pay team in Seoul, designing, building, and operating Coupang's core payment platform. Focus is on scalability, stability, security, and performance of payment, settlement, and reconciliation systems at large scale, using Java/Kotlin and Spring.
Software Engineer III, Frontend (Storefront)
Builds and maintains Quince’s ecommerce storefront systems, including backend services, APIs, and customer-facing web/mobile apps, using full-stack development with Java/Spring Boot and JavaScript/TypeScript frameworks.
Senior Technical Consultant Java / Software Engineering (m/w/d)
Senior Technical Consultant (Java) for an award-winning technology and consulting house in the Rhein-Main region (hybrid, Mainz): you guide clients through digitalization and custom software projects — analyzing requirements, running workshops, translating business needs into technical concepts, and supporting architecture decisions with Java, Spring Boot/Quarkus/Jakarta EE, and modern frontend st
Full Stack Engineer
Full-stack engineer at 3Y Health, an AI-native operating system for healthcare practices: building AI agents and automated workflows for clinic ops (insurance verification, prior auth, intake, claims) and shipping web/mobile features end to end. Stack centers on Python and TypeScript with React/Next.js, PostgreSQL, Temporal, AWS, and daily use of AI coding agents like Claude Code.
Founding Engineer
About 3Y Health 3Y Health is building the operating system for healthcare practices, an AI-native platform that helps clinicians start, run and grow their practice. We work as a managed services organization (MSO):…
AI Product Engineer
About 3Y Health 3Y Health is building the operating system for healthcare practices, an AI-native platform that helps clinicians start, run and grow their practice. We work as a managed services organization (MSO):…
Backend API Engineer (Python/FastAPI) for App Connectivity
Mid-level engineer on Firefly Electric & Lighting's IT team in Manila, building REST APIs with Python/FastAPI to connect mobile apps to backend systems. Needs 1-3 years' mobile development experience, strong Python fundamentals, and familiarity with Kotlin/Java for Android or cross-platform work.
Automotive Qa Engineer - Data Quality & Ci/Cd
QA Engineer at DKB's tech hub in Alboraya, Spain, owning the team's testing approach: designing and expanding automated backend/API test coverage, ensuring test environments and test data readiness, and contributing to continuous testing and delivery. Core stack includes Java or Kotlin, SQL, and automated testing frameworks.
Cloud-Native Devops Engineer For Ai-Driven Saas Platform
DevOps engineer designing and operating the cloud platform behind a multi-tenant, AI-native SaaS product for the hospitality industry. Day to day: AWS/Azure infrastructure, Kubernetes and Docker, Terraform IaC, CI/CD pipelines, observability with Grafana/ELK, and Microsoft SQL Server and Redis operations.
Senior Devops Engineer (Cloud-Native, Ai-Driven Platform)
Senior DevOps engineer in Barcelona designing and running the AWS/Azure cloud infrastructure behind a multi-tenant SaaS platform: CI/CD pipelines, Kubernetes, Terraform IaC, observability (Grafana/ELK), SQL Server reliability, DevSecOps, and AI-assisted operations tooling.
Full Stack Developer
Full Stack Developer (Angular front end, Java/Kotlin back end) at IT consultancy Zemsania in Barcelona, on a hybrid model (1 day/week in office), building, packaging and deploying applications for clients in the insurance sector. Stack includes NgRx/Nx, REST APIs, Docker/Kubernetes, AWS/Azure, PostgreSQL/MongoDB.
Senior Lead Software Engineer - Backend Engineering - Java/Kotlin
Senior lead backend engineer on JPMorganChase's Chase UK digital-bank Accelerator team in London, building scalable, secure, cloud-native products using JVM languages (Java/Kotlin), with focus on domain modeling, zero-downtime releases and driving adoption of AI-assisted engineering practices across squads.
Lead Software Engineer - Backend Engineering - Java/Kotlin
Lead backend engineer on JP Morgan Chase's UK Chase digital bank Accelerator team, building secure, scalable, cloud-native customer products in Java/Kotlin on the JVM — covering domain modeling, zero-downtime releases, performance and reliability — while driving team adoption of AI-assisted engineering practices.
Software Engineer III - Backend Engineering - Java/Kotlin
Backend Software Engineer III on JP Morgan Chase's Accelerator team (Chase UK digital bank) in London, building secure, scalable, cloud-native banking products in JVM languages (Java/Kotlin). Day-to-day involves domain modeling, zero-downtime releases, performance and reliability work, and using enterprise AI coding-assist tools.
Head, Software Engineering
Head of Software Engineering at SMRT Corporation in Singapore, leading a team that builds digital products like the Wink+ app and delivers AI-driven solutions. Oversees the full SDLC, architecture, and AI integration; hands-on with Kotlin, Node.js, Java, iOS/Android on cloud-native infrastructure. Initial two-year contract.
Data Engineer / Software Developer MDOCore Datalake (w/m/d)
Develops, runs, and optimizes data pipelines, ingestion, and APIs for HENSOLDT's MDOCore Datalake — a defense data platform integrating sensor, simulation, test, and operational data. Daily work spans Python/Java-class languages, SQL/NoSQL and S3-compatible storage, Kubernetes, CI/CD, and enabling data scientists plus agentic-AI capabilities.
Software Engineer (f/m/d) – Cross-Platform SDK Development
Company Description AI macht uns schneller. Das Denken nimmt sie uns nicht ab. Was AI produziert, überprüfen wir. Für alles, was rausgeht, stehen wir gerade. Beim Ausprobieren sind wir schnell, beim Ausliefern…