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在《車麻吉》Java/Kotlin 後端工程師的職位上，你將協助團隊在目前的主要服務上進行設計、單元測試、開發與維護，能夠協助後端成員一起進步，並且提供團隊關於後端的各種專業建議。 這個職位我們期望招募用 Java/Kotlin 開發後端，具備一定經驗的人，但若具備現代 MVC 框架的扎實經驗，相信也不會是太困難的轉換。我們目前在正積極將主系統中的部分服務拆分出來，規劃拆分出來的服務會採用 Quarkus 框架，以 Kotlin 撰寫，透過 Quarkus 的生態系打造微服務系統。 熟悉 Kotlin 或 Java，我們會使用 Kotlin。熟悉 Spring Boot 或Quarkus框架，我們會使用 Quarkus。熟悉 RESTful 風格 API 設計。熟悉 Gradle 建置管理工具。熟悉關連式資料庫與 Schema 設計，與 ORM 操作。我們主要使用 PostgreSQL，也有 MySQL。熟悉利用 Memory Cache 加速讀取效能，我們使用 Redis。熟悉版本控管工具，我們使用 Git。專案存放與 Issue Tracking 也都使用 GitHub。熟悉撰寫單元測試。熟悉基本 Unix like 系統指令操作。熟悉 HTTP 相關網路知識。熟悉物件導向語言設計模式熟悉雲端架構經驗，我們主要使用 GCP，也有 AWS。

從計程車叫車 App 出發，55688 App 已突破 720 萬會員，App 累積超過 100 萬次下載，4.8 星高評價。我們的目標不只是讓用戶擁有完善的叫車體驗，更要透過快遞、找專家、洗衣等服務，讓用戶能在單一平台完成所有生活需求，打造強大的 Super APP！我們有大量來不及完成的創新點子等你一起完成，如果你熱愛優化卓越的用戶體驗、挑戰高流量技術極限，歡迎加入 55688 App 團隊，和我們一起改變出行生活！【工作內容】1. 負責 55688 Android App 多元產品開發優化，讓用戶擁有優質難忘的體驗。2. 持續追求 Android 業界主流新技術實踐、高安全性、高效能、低耦合架構。3. 與團隊 Code Review 並給予成員技術協助，參與內部技術分享並完成團隊工作。4. 密切與 PM、UI/UX 設計師、後端合作交付高品質產出，支援 PM 與需求單位技術諮詢。5. 協助編寫技術規格文件，確保團隊協作流程高效率。

加入「夯客」開發團隊，協助維護這套已經上線五年，每日處理數百萬請求的 SaaS 系統。我們提供穩定的開發環境，擁有完整的 UI、UX、PM、QA 團隊編制，並使用 Github、Slack、JIRA 等工具進行高效協作。你將負責 RESTful API 的功能開發，並參與 AWS 的日常維運。這是一個能讓你參與真實且複雜的後端產品開發的機會，你將在資深團隊的帶領與完善的制度下，從實戰中紮實累積雲端架構與大型系統開發的專業經驗。

About Us We are a profitable and growing company, originating in Silicon Valley and now headquartered in Taiwan. We combine intuitive design with Creative AI tech to create inspiring products for millions of people worldwide.We offer a fun, creative, and international workplace with competitive compensation, stock options, flexible hybrid work, free lunch, and more.Ready to make a big impact with a talented team? Come create with us.About the RoleAs an SDET (Software Development Engineer in Test) at PicCollage, you’ll play a key role in shaping how we build, test, and deliver high-quality creative products used by hundreds of millions of people worldwide. You’ll help drive the reliability, scalability, and speed of our entire engineering process—through automation, infrastructure, and quality practices.You’ll work across multiple platforms and languages—spanning iOS, Android, Backend, and CI/CD systems—to design smarter workflows and deliver seamless collaboration between development, testing, and release. Beyond traditional automation, you’ll also explore new frontiers where AI and engineering meet—applying machine learning to improve test coverage, enhance developer efficiency, and ensure the quality of our AI-powered user experiences.What You'll Do Develop and optimize multi-platform test automation frameworks for iOS, Android, Backend, and potential Web Frontend, ensuring reliable, scalable, and maintainable systems.Build and maintain hybrid (cloud + self-hosted) distributed job systems to orchestrate large-scale build, test, deployment, and CI/CD workflows.Develop cloud services that support and extend our automation, testing, and infrastructure capabilities.Design and implement SDKs and shared packages to streamline automation and testing across teams.Leverage AI to enhance testing, development, verification, and other areas that improve engineering productivity and coverage.Collaborate with Developers, PMs, and Testers to solve product needs through automation and tooling, driving continuous improvement and a culture of quality and innovation.

【職務內容】 1.使用 Spring Framework（含 Spring Boot）進行後端系統設計與開發。 2.建立具擴展性的系統架構，包含物件導向設計（OOP）、事件驅動架構、資料流程規劃等。 3.使用 Java / Kotlin 開發後端服務，並善用 Kotlin Coroutine 進行非同步／並行處理。 4.開發與維運 微服務架構，包含服務拆分、API 設計、資料一致性與部署模式規劃。 5.進行效能調校、系統除錯、瓶頸分析與可靠性優化。 6.與前端、PM 及其他相關角色合作，釐清需求並提供可實際落地的技術解決方案。 7.協助制定後端開發規範、最佳實務，並提升整體團隊技術水平。 8.執行主管交辦之專案相關事項。

MoMo is Vietnam’s leading mobile payment and super-app platform, empowering millions of users to make daily transactions that are fast, secure, and joyful.If you are passionate about building impactful platforms, solving complex technical challenges, and creating systems that influence millions of users daily, MoMo is the perfect place for you to grow your career and make a difference.Mô tả công việcKey Responsibilities:Platform Development:Design and implement APIs: Develop secure, well-documented APIs that allow merchants and users to create, manage, and monitor promotional/journey campaigns in real time.Develop scalable backend systems: Build reliable, fault-tolerant backend services capable of handling high user volumes while maintaining performance.Collaboration Teamwork:Work with cross-functional teams: Collaborate with frontend engineers and product owners to ensure the backend systems integrate seamlessly with the overall platform.Participate in code reviews: Regularly review and provide feedback on team members' code to maintain code quality and improve team knowledge.Fast Delivery Execution:Deliver features quickly and efficiently: Collaborate with team members to ensure rapid development and timely delivery of features, focusing on speed and quality.Prioritize speed in development cycles: Maintain a fast-paced workflow to meet deadlines and launch new features without sacrificing the stability or scalability of the platform.Tech Stack:Core Technology: Strong foundation in Java, Go, Kotlin, or other JVM-based languages.Web Server: Spring Boot or Vert.x (both are good options).Databases: PostgreSQL, MongoDB, HBase (experience with any database is a plus).Yêu cầu công việcExperience: 1+ years of backend development focusing on Java, Go, Kotlin, or data structure optimization.Skills: Strong knowledge of Java, Go, or Kotlin programming, real-time applications, scalable system design, and problem-solving.Mindset: Fast learner focused on fast delivery, able to deliver quickly in a high-demand environment.Nice to Have:Knowledge of Spring Boot, Vert.x, and microservices architecture.Experience with promotion systems.

Mô tả công việcWork closely with product teams and various engineers to create visually appealing and functional applications;Design, build and test significant features in super app architecture;Monitor and operate existing systems;Enhance and resolve issues in the current codes, perform unit testing and integration testing;Develop responsive and user-friendly interfaces using modern front-end frameworks such as ReactJS, React Native, Kotlin, Swift;Write clean and efficient code;Research and apply new technology to optimize and enhance current system;Optimizing components for maximum performance across a vast array of devices and browser;Enhance and resolve issues in the current codes, perform unit testing and integration testingYêu cầu công việcBachelor’s degree in Computer Science, Software Engineering, or a related field;At least 2 years of experience in software development;Proficient in ReactNative, Java (Kotlin), iOS Swift, HTML, CSS, and JavaScript;Experience with ReactJS/ NextJS/ VueJS;Be familiar with RDBMS such as MySQL/PostgreSQL/Oracle or NoSQL databases such as MongoDB is a plus;Good knowledge of data structures, system design, and algorithms;Familiarity with responsive design principles;Experience with version control systems such as Git;Experience with caching solution such as Redis;Ability to work independently and as part of a team;Able to quickly manage new technologies.

At MoMo, our Marketing Platform connects businesses with millions of users through intelligent, data-driven, and personalized campaigns. You will work on large-scale distributed systems that manage campaign delivery, ad ranking, user targeting, and real-time analytics - ensuring every impression counts.Mô tả công việcTechnical deliveryDesign, build, and test mobile features in a super app architectureDevelop and maintain mobile apps using React Native, Kotlin, and SwiftWork with Product and Engineering teams to deliver scalable solutionsWrite clean, efficient code with unit and integration testsMaintain, optimize, and monitor production systemsImprove performance, stability, and code quality across devicesTechnical leadership and mentoringProvide technical guidance and review code within the teamContribute to architecture and technical design decisionsSupport and mentor other mobile engineersPromote engineering best practices and continuous improvementYêu cầu công việcBachelor’s degree in Computer Science, Software Engineering, or a related field4+ years of software development experience, with strong mobile focusProficient in React Native, Android Kotlin, iOS Swift, HTML, CSS, and JavaScriptExperience with ReactJS, NextJS, or VueJSFamiliar with RDBMS such as MySQL, PostgreSQL, Oracle, or NoSQL databases such as MongoDBGood understanding of data structures, algorithms, and system designKnowledge of responsive design principlesExperience with Git or other version control systemsExperience with caching solutions such as Redis is a plusAble to work independently and collaborate effectively in a teamWilling and able to learn and apply new technologies quickly

MoMo is the market leader in mobile payments in Vietnam. We strive to make all transactions fast, easy and joyful. We are looking for an experienced Software Engineer to join our growing Big Data AI team. At MoMo, we make AI/Machine Learning the core component to almost every part of the product - product recommendation, personalization, conversational AI, eKYC, risk scoring, fraud detection, promotion targeting and financial services.As a Software Engineer specializing in Natural Language Processing (NLP), you will play a pivotal role in crafting and deploying advanced conversational AI systems. This position offers a unique chance to make a significant impact by leveraging Generative AI and Large Language Models to transform interactions for millions of users. Join us in pushing the boundaries of AI technology and shaping the future of mobile payments in Vietnam.Mô tả công việcDevelop and Implement Conversational AI Solutions: Design, build, and maintain advanced conversational AI systems that enhance user interactions, utilizing cutting-edge NLP technologies and Generative AI.Contribute to System Architecture: Participate in the design and architecture of systems and infrastructure, ensuring robustness and scalability.Maintain High Standards of Code Quality: Write clean, maintainable, and efficient code in Kotlin and Python, and participate in code reviews to uphold the team's quality standards.Collaborate with Cross-Functional Teams: Work closely with product managers, data scientists, and other engineering teams to integrate AI-driven features into our platform, ensuring seamless user experiences.Yêu cầu công việcWhat we are looking forStrong Problem-Solving Skills: You have a proven track record of tackling complex technical challenges and delivering effective solutions, particularly in the realm of AI and machine learning.Ownership and Proactivity: You take initiative and are driven to see projects through from start to finish. You are someone who can be relied upon to deliver results with minimal supervision.Backend Engineering Proficiency: Minimum 5 years of experience as a Software Engineer, with strong skills in backend languages like Kotlin, Python, Java, or Go.High Standards for Quality: You take pride in your work and strive to deliver solutions that are not only functional but also maintainable and scalable.BenefitsCompetitive compensation package.Performance-based bonus.Insurance package.Chance to work with many strong people with international experience.

We are looking for an experienced Senior Software Engineerwho is passionate about building high-performance backend systems. You will work closely with a talented engineering team in an Agile environment, contributing to all stages of product development — from architecture design, coding, code review, to production operations. Our product is a next-generation social platform that integrates social media, personalized feed, rating review systems, community engagement, social gamification, real-time chat, and merchant services. The platform is built with a complex microservice architecture, designed to handle millions of users, massive data streams, and high concurrent traffic efficiently. The system is deeply integrated with AI, leveraging machine learning and large language models (LLMs) to enable content understanding, recommendation, fraud detection, and intelligent moderation. You will have the opportunity to work closely with AI engineers to design scalable APIs, data pipelines, and backend infrastructures that power these intelligent features across the social ecosystem.Mô tả công việcDesign, develop, and maintain backend services using Java (Spring Boot / Vert.x / Quarkus) and Kotlin;Build and integrate RESTful APIs, gRPC services, and external third-party systems;Design scalable, reliable, and fault-tolerant architectures that meet performance and business requirements;Write clean, maintainable, and testable code following SOLID principles and modern best practices;Conduct code reviews, optimize performance, and improve database queries (MySQL / MongoDB / Redis / Kafka / ElasticSearch/ HBase/ ClickHouse);Collaborate with DevOps teams to implement and maintain CI/CD pipelines (ArgoCD, Docker, Kubernetes, GitLab CI) across cloud environments (AWS / GCP / Azure);Apply best practices for performance tuning, caching, monitoring, logging, and observability;Work closely with AI and data teams to integrate backend services with machine learning and data pipelines;Mentor and support junior developers, fostering a culture of technical excellence and continuous improvement.Yêu cầu công việcBachelor’s degree in Computer Science, Software Engineering, or a related field;3–6+ years of hands-on experience in Java (Kotlin) development for production systems;Strong proficiency in Spring Boot or Vertx, with understanding of reactive or asynchronous programming;Experience with REST / gRPC APIs and message queues (Kafka, RabbitMQ);Solid understanding of OOP, design patterns, concurrency, and memory management;Experience working with OLAP systems, data analytics pipelines, or data warehousing technologies;Proficient in working with SQL / NoSQL databases (Oracle, MongoDB, Redis, HBase etc.);Familiar with Docker, Kubernetes, and cloud environments (AWS / GCP / Azure);Strong problem-solving skills, logical thinking, and a sense of ownership;Good communication and collaboration skills across teams.