Java, C#, Python, JavaScript, PHP, Ruby, HTML5, CSS3, Node.js, React.js, Angular, Vue.js, React Native, Flutter, Swift, Kotlin, Spring Boot, Django, Flask, Express.js, .NET Core, RESTful APIs, GraphQL, WebSocket, SQL, PostgreSQL, MySQL, MongoDB, Cassandra, Object-oriented programming, Microservices, Serverless, JUnit, Mocha, Jest, Git, GitHub, GitLab, AWS, Microsoft Azure, Google Cloud Platform, EC2, S3, Lambda, Azure App Services, GCP Compute Engine, Docker, Kubernetes, OpenShift, Terraform, CloudFormation, Jenkins, GitLab CI, CircleCI, Ansible, Puppet, Prometheus, Grafana, Datadog, New Relic, Microservices architecture, Event-driven architecture, Kafka, RabbitMQ, TensorFlow, Keras, PyTorch, scikit-learn, Power BI, Tableau, D3.js, Matplotlib, Hadoop, Spark, Apache Flink, ETL, Data analysis, Pandas, NumPy, R, Data pipelines, Natural Language Processing, Selenium, JUnit, TestNG, Mocha, TDD, BDD, JMeter, LoadRunner, Jira, Bugzilla, TestRail, SonarQube, ESLint, Checkstyle, OWASP, SSL/TLS, OAuth, JWT, Penetration testing, AWS security, Azure security, GCP security, ISO 27001, GDPR, PCI-DSS, Scrum, Kanban, Lean, Jira, Trello, Asana, Microsoft Project, User research, A/B testing, Figma, Sketch, Adobe XD, Bootstrap, Interaction design, UI development, Agile transformation, Mentorship, Problem-solving, Communication, Collaboration, Time management, Client relationship management, Attention to detail.