Johan Stephen Raj

Front-End Development

• Proficient in HTML5, CSS3, SCSS, and JavaScript (ES6)
• Experienced with modern frameworks and libraries: React, Angular, Vuejs, Nextjs, React Native, Flutter
• Skilled in responsive design, cross-browser compatibility, accessibility standards (WCAG), and UI/UX best practices
• Familiar with front-end build tools and bundlers: Webpack, Vite, Babel, and modern state management (Redux, MobX, Zustand)

Back-End Development

• Strong expertise in server-side technologies: Nodejs, ASPNET Core, VBNET, Django, Ruby on Rails, Java (Spring Boot), PHP, Dart
• Deep understanding of RESTful API design, GraphQL, gRPC, and microservices architecture
• Hands-on experience with authentication/authorization (OAuth2, JWT, SAML, OpenID Connect) and API security

Automation & RPA

• Designed and deployed automation of enterprise workflows using Blue Prism RPA and UI/Process Automation
• Integrated automation into legacy and non-API systems, improving efficiency and reducing manual work
• Knowledge of Power Automate, UiPath, and scripting with Python/JavaScript for automation

Testing & Quality Assurance

• Experienced with unit, integration, and end-to-end testing using Jest, Mocha, Jasmine, NUnit, xUnit, Cypress, Playwright, Puppeteer, and Selenium
• Knowledge of TDD/BDD practices (Cucumber, SpecFlow) ensuring high-quality, maintainable code
• Performance testing (JMeter, k6) and security testing (OWASP ZAP)

Database Management

• Skilled in relational databases: SQL Server, MySQL, PostgreSQL, Oracle
• Proficient with NoSQL databases: MongoDB, Redis, Cassandra, Firestore
• Strong knowledge of database design, indexing, optimization, stored procedures, and transactions
• Experience with data warehousing (Snowflake, BigQuery) and ETL pipelines

DevOps & Cloud Engineering

• Proficient in CI/CD pipelines using Azure DevOps, Jenkins, GitHub Actions, GitLab CI
• Hands-on with containerization and orchestration: Docker, Kubernetes, Helm
• Cloud expertise in AWS, Azure, and GCP (IaaS, PaaS, SaaS)
• Skilled in Infrastructure as Code (Terraform, CloudFormation, Ansible)
• Monitoring & logging: Prometheus, Grafana, ELK Stack, Splunk

Architecture & Design

• Expertise in designing scalable, distributed, event-driven, and serverless architectures
• Strong grasp of design patterns, SOLID principles, Domain-Driven Design (DDD), and Clean Architecture
• Knowledge of messaging systems (Kafka, RabbitMQ, Azure Service Bus)
• Familiar with enterprise architecture frameworks (TOGAF, Zachman)

Version Control & Collaboration

• Advanced Git workflows (feature branching, trunk-based development, GitFlow)
• Experienced with GitHub, GitLab, Bitbucket, and code review practices
• Strong understanding of Agile methodologies (Scrum, Kanban, SAFe) and collaboration tools (Jira, Confluence, Azure Boards)

Security & Compliance

• Understanding of application security (OWASP Top 10, SAST, DAST)
• Experience implementing secure coding practices, encryption, and compliance (GDPR, HIPAA, ISO27001)
• Knowledge of identity and access management (IAM) and zero-trust security

Leadership & Mentoring

• Led cross-functional teams to deliver enterprise-scale projects
• Mentored junior developers, conducted code reviews, and established coding standards
• Experience in technical interviews, recruitment, and knowledge-sharing sessions