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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.

What this role owns: Hands-on security for mobile apps and web services. You run penetration tests, review source code, build threat models, and produce actionable fixes that engineers can implement. You also create standards, automate tests in CI, and run training for engineering teams. Mô tả công việcKey ResponsibilitiesPerform penetration tests for mobile and web applications.Review code to identify security vulnerabilities and recommend fixes.Develop threat models for new features and workflows.Analyze application flows and identify attack vectors (tampering, hooking, jailbreak/root bypass, emulator detection, etc.).Research emerging vulnerabilities, exploit techniques, and tools.Document findings and deliver clear remediation guidance to engineering teams.Support post-incident analysis and root-cause reviews.Build internal security guidelines and secure coding standards.Train engineering teams on security best practices and secure SDLC.Yêu cầu công việcRequirementsBachelor's degree in Information Security, Computer Science, or related field.Proven experience in application penetration testing (mobile + web).Practical source code review experience and secure coding knowledge.Hands-on experience with testing frameworks such as the PTES and OWASPIn-depth knowledge of application development processes and at least one programming or scripting language (e.g., Java, Scala, C#, Ruby, Perl, Python, PowerShell)Passion to learn and explore.PreferredExperience with exploit development, vulnerability research or fuzzing.Fintech or payment industry security experience.

The MoMo Recommendation Platform is a complex system that powers personalized experiences for millions of users using a diverse range of technologies.We’re looking for a Senior Software Engineer with strong system thinking, architecture design skills, and a product mindset to help build the MLOps platform that transforms any AI/ML solutions into production-grade systems at scale.Mô tả công việcThink like a product engineer: you don’t just “code a solution” – you build a platform that empowers others to deliver intelligent sysDesign and develop a flexible platform that turns AI/ML solutions into production-ready systems: microservices, batch pipelines, or real-time APIsBuild infrastructure to support:Model training pipelinesPackaging deploymentServing rolloutMonitoring alertingCollaborate closely with Data Scientists, Business, and Product teams to deeply understand requirements and design adaptable, scalable solutionsIntegrate platform components into MoMo’s broader infrastructure: promotion engine, A/B testing, analytics, real-time scoring, etc.Yêu cầu công việcMust-Have5+ years of experience in software development, system architecture, or backend/platform engineeringProficiency in one or more of the following: Python, Bash, C++, JavaScript, Java, or GoStrong problem-solving skills and teamwork spiritExperience with:Platform Deployment: Kubernetes, Helm, Argo CD, Argo Rollouts, Docker, Google Cloud Platform (GCP) or Amazon Web Services (AWS)Serving APIs: FastAPI, gRPC, MLflow, KServe, custom logic services, REST APIsData Messaging: BigQuery, Redis, MongoDB, PostgreSQL, Oracle, MySQL, Kafka, Pub/SubOrchestration Workflow: Airflow, Argo WorkflowsCI/CD Monitoring: GitHub Actions, Prometheus, GrafanaData Sources: App event streams, relational databases, messaging systems, APIsSolid understanding of distributed systems and cloud-native architectureAbility to design systems that support diverse solution typesPlatform mindset: you build for stability, scalability, and long-term maintainabilityStrong communication and collaboration skills – able to work cross-functionally with Data Scientists, DevOps, and Product teamsNice-to-HaveExperience working with both AI/MLExperience scaling low-latency / real-time systemsFamiliarity with A/B testing, canary release, and shadow deployment strategiesProduct-oriented mindset: you build systems that others can easily adopt and extend

Phát triển và vận hành hệ thống: Các hệ thống Back-end đáp ứng nhu cầu của 1-5 triệu người dùng traffic cao (Video, Audio) trong 3-5 năm tớiTriển khai các kiến trúc Micro-service và Domain-Driven Design để thực thi các mục tiêu: tăng tốc độ triển khai sản phẩm, khả năng mở rộng cao cả về quy mô lẫn tính năng, tối ưu performance và reliability. Xử lý các nguồn dữ liệu multi-sensor: Brainwave Detection, Webcam Emotion Detection, Voice Recognition… để xây các mô hình và ứng dụng AI-based Personalized Learning, GPT hỗ trợ việc dạy và học Làm việc trong các squad team theo mô hình Agile với đầy đủ các role, phân chia theo A/B Testing-driven và Architecture-led projects, theo các nhóm End-User và Enterprise UserTech Environment: Micro-Service Architecture from Day 1; main tech stacks: Java, PHP, Python, SpringBoot, ReactJS, React Native, mySQL, mongoDB, Redis, Kafka. Infrastructure 100% based on K8s

-Tham gia vào các dự án lập trình phát triển phần mềm product thương mại điện tử, logictic, học trực tuyến,…- Nghiên cứu, phân tích, thiết kế hệ thống, tối ưu cho các dự án- Phát triển API phục vụ Mobile Apps,Web và tích hợp với các hệ thống- Đóng góp ý tưởng xây dựng, cải tiến sản phẩm.- Lên kế hoạch và đề xuất ý tưởng về công việc với nhóm.- Chi tiết công việc sẽ được trao đổi thêm vào buổi phỏng vấn.- Đảm bảo hiệu suất, chất lượng và khả năng đáp ứng của các ứng dụng.

- Tham gia phát triển các ứng dụng Android (Java) cho thị trường Nhật Bản.- Nâng cấp bổ sung các tính năng cho các ứng dụng công ty.- Tìm hiểu yêu cầu công việc thông qua tài liệu thiết kế của khách hàng.- Trao đổi, thống nhất với team về cách triển khai và lên kế hoạch thực hiện code, fixbug.- Coding theo flow và convention của dự án.- Chịu trách nhiệm về tiến độ và chất lượng công việc, báo cáo hàng ngày trực tiếp cho người quản lý.