Senior Full Stack Engineer

Senior Full Stack Engineer

Ciklum

Remote, Poland

About the role:

As a Senior Full Stack Developer, you will be part of a cross-functional team with full ownership of the product and codebase. You will participate in all stages of the development lifecycle - from ideation and design to architecture, implementation, deployment, and maintenance. This project enhances trust and transparency on a global consumer review platform by detecting and preventing fraudulent activities, such as fake reviews, and ensuring policy compliance through AI, data analysis, and scalable fraud detection systems.

Responsibilities:

• Collaborate closely with Product, Design, and Data Science in a full ownership team;
• Drive system design and technical decision-making;
• Use TypeScript to develop scalable backend services and clean, reusable frontend components;
• Build and maintain RESTful APIs and distributed cloud services;
• Contribute to planning, implementing, and releasing new features;
• Troubleshoot and resolve issues across the tech stack;
• Write clean, maintainable, and testable code;
• Actively participate in code reviews and team discussions;
• Support and inspire the team with your technical expertise and problem-solving mindset.

Requirements:

• 5+ years of professional experience in fullstack web development;
• Proven experience in designing, building, and maintaining secure, distributed systems on AWS;
• Strong, hands-on expertise with TypeScript, Node.js and React;
• Experience with implementing event-driven architectures and microservice architecture;
• Demonstrable experience with AWS services such as API Gateway, Lambda, ECS, SQS, SNS, and DynamoDB;
• Proficient with CI/CD practices and tools (e.g., Jenkins, GitLab CI, GitHub Actions);
• Hands-on experience with containerization using Docker and an understanding of orchestration (e.g., ECS, Kubernetes);
• Skilled in working with both NoSQL (e.g., MongoDB, DynamoDB) and relational databases (e.g., PostgreSQL), including performance tuning;
• Experience with monitoring, logging, and observability tools (e.g., CloudWatch, Datadog, Grafana);
• Strong problem-solving skills and a passion for code quality and technical excellence;
• Upper-intermediate or higher level of spoken and written English.

Desirable:

• Experience with GCP and services like BigQuery;
• Exposure to Python, .NET. or PHP;
• Frontend experience with Next.js, CSS Modules, SASS, or Styled Components;
• Familiarity with event-driven architectures and microservices;
• Experience in data analysis or fraud detection solutions.

Personal skills:

• Accountability: You take ownership and follow through on your responsibilities;
• Drive: You're proactive and results-oriented, always seeking better ways to solve problems;
• Self-development: You stay curious, seek feedback, and aim for continuous improvement;
• Effective communication: You communicate your ideas clearly and collaborate effectively in a team;
• Mentoring: You're open to helping less experienced team members and sharing knowledge.