Senior Full Stack Engineer developing scalable SaaS applications using React, TypeScript, and Java. Collaborating on architecture and mentoring engineers in a hybrid environment.
Responsibilities
Translate concepts and requirements into scalable technical designs.
Design, develop, and maintain frontend and backend systems using React, TypeScript, and Jakarta EE.
Build new product features from concept to production deployment.
Refactor and migrate legacy project layers into the core SaaS platform.
Integrate customer-specific requirements into maintainable, product-grade functionality.
Ensure performance, scalability, security, and maintainability across the stack.
Design and implement automated test cases (unit, integration, and end-to-end where appropriate).
Ensure features are fully test-covered before release.
Review, test, and validate other developers’ work.
Contribute to improving overall test strategy and coverage.
Take shared responsibility for production stability — quality is owned by engineering.
Contribute to architectural decisions and technical roadmaps.
Drive best practices in system design, code quality, and testing.
Actively participate in code reviews and technical discussions.
Mentor other engineers and raise overall engineering standards.
Support CI/CD pipelines and deployment workflows.
Work with Docker-based containerization.
Troubleshoot production issues in AWS environments.
Improve observability, performance, and reliability.
Contribute to infrastructure and operational improvements when required.
Use AI-powered development tools to improve productivity and quality.
Integrate AI capabilities where they provide real customer or workflow value.
Critically assess AI-generated outputs before integrating into production.
Requirements
Deep experience with React and TypeScript in production-grade applications
Strong proficiency in modern JavaScript, HTML5, and CSS3
Experience designing scalable and maintainable frontend architectures
Experience integrating RESTful APIs
Extensive experience designing and implementing backend systems using Java (Jakarta EE)
Strong experience building RESTful APIs
Solid understanding of relational databases, data modeling, and query optimization
Experience with asynchronous processing and system integration
Experience writing automated unit and integration tests
Familiarity with end-to-end testing frameworks (e.g., Cypress, Jest, TestCafe or similar)
Strong understanding of test strategy and testable architecture
Experience working with CI/CD pipelines and automated test execution
Experience working in AWS-hosted SaaS environments
Experience with Docker and containerized deployments
Experience troubleshooting production systems
Strong architectural thinking across the full stack
Experience working in complex and evolving codebases
Proven ability to refactor legacy systems incrementally and safely
Strong debugging and performance optimization skills
Experience mentoring developers or leading technical initiatives
Nice To Have:
Experience with event-driven systems (e.g., Kafka)
Familiarity with monitoring and observability tooling
Experience integrating AI APIs into business workflows
Knowledge of DevOps best practices and infrastructure automation
Experience in logistics or enterprise software environments
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