11,040 Kotlin jobs
Open roles that use Kotlin for Android and JVM backends.
Senior Software Engineer
Lead-level senior engineer on Sunbit's Merchant-Ops squad in Tel Aviv, owning technical leadership, architecture, and delivery of merchant-facing web, mobile, and backend products. The stack leans on Kotlin/Java, Spring, AWS, and microservices in a real-time fintech payments environment.
Architekt Kotlin Multiplatform
Mobile architect leading development of a new Kotlin Multiplatform (KMP + Compose Multiplatform) banking app for Bank Pekao: designs shared Android/iOS architecture, sets technology and security standards, oversees mobile CI/CD and app releases, and mentors a 3-engineer KMP team. B2B contract, hybrid with ~1 office day/week.
Инженер по тестированию ПО (Junior+ / Middle)
Мы в поисках амбициозного и активного специалиста в области тестирования ПО, готового развиваться и принимать активное участие в интересных проектах Обязанности: проведение ручного и автоматизированного тестирования…
Senior Deployment and Integration Engineer
Office-based senior engineer in Nagpur (APAC hours) leading a team that deploys and integrates systems on GCP — building infra with Terraform and CI/CD, running Kotlin/Java microservices on PostgreSQL/Redis, and managing third-party API, webhook and SFTP integrations. Bonus exposure to telephony/SIP, WebRTC and GenAI.
Frontend Developer - AI Trainer
Fully remote AI-training role: you solve assigned coding challenges, write clean code examples with thorough explanations, review AI-generated code for correctness and readability, and share detailed feedback to improve model performance. Requires fluent English, strong skill in at least one language/framework (JavaScript, Python, React, etc.), and a bachelor's degree; paid hourly per project.
Python QA Automation / SDET (Quantum, Hardware Virtualization)
Fully remote senior QA Automation / SDET role (6+ years) building Python-based test automation for server virtualization and hardware emulation (QEMU, KVM, libvirt), with integration/system/API testing over REST/gRPC plus Pytest, Ansible, and CI/CD.
Développeur Java/Kotlin confirmé - Freelance (H/F)
Freelance Java/Kotlin developer (6-10 years experience) for a high-traffic website based in Seine-Saint-Denis (93), France. Day-to-day work covers developing and maintaining Java/Kotlin applications, CI/CD deployment to AWS cloud (Docker/Kubernetes), and site performance optimization, with AI tooling like GitHub Copilot. Daily rate €450, 2 remote days per week.
Software Mobile Engineer
Mobile engineer on Weave's fully remote (India) team, building cross-platform iOS/Android apps in Flutter/Dart for its healthcare practice platform. Day to day: shipping UI features, integrating backend APIs and local storage, writing tests, and debugging performance issues.
Principal Full Stack Software Engineer (P60) — Growth
Principal-level full stack engineer on Atlassian's Starburst Growth team, leading architecture and hands-on delivery (60-70% coding) of onboarding and cross-product journeys across Confluence, Loom, and TWC. Core stack: React/TypeScript micro-frontends, backend microservices (Java/Kotlin/Go/Python), GraphQL/REST, AWS, and Statsig-driven experimentation and telemetry.
Senior Principal Software Engineer
Senior Principal Engineer setting the technical direction for Atlassian's Enterprise Data Center products, owning the hardest cross-team architecture problems and mentoring 200+ engineers. Day to day spans strategy, design and hands-on Java/JVM coding across security, platform modernisation, Marketplace compatibility, cloud-migration tooling and AI-driven engineering efficiency.
Junior Java Developer – Hybrid WFH & Career Growth
Junior Java developer at a London commodities trading firm: build backend Java services while gaining exposure to the wider stack (Kotlin, Spring Boot, AWS, React) in a small Agile team. Hybrid role — three days in the office, two remote — with structured career progression.
Junior Java Developer - Trading
Junior backend-focused Java developer at a London commodities trading firm specialising in silver and gold, working on trading systems, marketplace, website, payments and automated trading bots. Stack includes Java, Kotlin, Spring Boot, TypeScript, React and AWS; hybrid role based in the West London office.
Junior Java Developer — Commodities Trading (Hybrid)
Junior backend Java developer (hybrid, London) at a commodities trading firm, building trading systems, marketplaces, payments and automated bots with Java, Kotlin, Spring Boot, TypeScript, React and AWS in an Agile team.
Java developer in commodities trading
Junior backend Java developer at a commodities trading firm specialising in silver and gold, working on trading systems, payments, marketplace, website and automated trading bots. Stack includes Java, Kotlin, Spring Boot, TypeScript, React and AWS; hybrid role with 3 days per week in London, salary up to £50k plus bonus.
Android Developer
We are looking for talented Android Developers to join a digital delivery team working on services that make a real difference to people across the UK You will work as part of a multidisciplinary team of developers,…
Senior Developer – EV Charging Platform
Senior backend developer at Pluq (Netherlands, hybrid) building the Java 21/Azure platform behind its European EV charging network — handling charging sessions, telemetry data, and kWh invoicing — while mentoring colleagues and shaping pragmatic architecture.
Senior Android Engineer
Senior Android engineer on the Coupang Eats team in Bengaluru, developing new features for the Coupang Eats food-delivery app, improving app performance, and building reusable scalable modules in Kotlin. Hybrid role collaborating with Product, UX, and Backend teams.
Senior Android Engineer
Internal-transfer role on the Coupang Eats team in Bengaluru (hybrid): develop new features for the Coupang Eats Android app, improve app performance, and build reusable, scalable modules in Kotlin, collaborating closely with Product, UX, and Backend teams.
[Coupang Pay] Sr. Back-end Engineer (Fintech Developer Platform)
Senior back-end engineer on Coupang Pay's fintech developer platform team, designing and running the platform services that keep large-scale payment traffic stable — including high-availability/DR architecture, internal CI/CD and DevOps tooling, and financial-security compliance. Stack includes Python/Go/Java/Kotlin on AWS with Docker/Kubernetes and Grafana/Loki/Prometheus observability.
[Coupang Pay] Sr. Back-end Engineer [L5] (Fintech Developer Platform)
Senior backend engineer on Coupang Pay's fintech developer platform team, designing and operating internal platform services that handle large-scale payment traffic — including high-availability/disaster-recovery architecture, CI/CD and DevOps tooling, and security/compliance. Core stack: Linux, Docker/Kubernetes, AWS, Python/Go/Java/Kotlin, and Grafana/Prometheus/Loki monitoring. Note: this posti