Hybrid Senior Back-End Engineer, Python

at ZYTLYN Technologies

• Job title: Senior Back-End Engineer, Python
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: AWS, Docker, Flask, JavaScript, Kubernetes, Next.js, Postgres, Python, Terraform
• Location requirements: Hybrid, Geneva, Switzerland

About the role

• Senior Back-End Engineer developing Python applications for predictive AI solutions in travel industry. Collaborating with engineering and data science teams to enhance product functionality.

Responsibilities

• Own the design, development, and maintenance of scalable backend APIs and related infrastructure using FastAPI, Flask, and Postgres.
• Design and optimise backend architecture on AWS, ensuring high performance, reliability, and security.
• Champion CI/CD best practices and automated testing pipelines with GitLab CI/CD to ensure high-quality, maintainable code.
• Collaborate closely with product managers, frontend engineers, and data teams to deliver robust backend solutions that power analytics, product features, and decision-making.
• Mentor and support fellow engineers in building scalable, maintainable, and well-tested systems.
• Continuously influence and improve the team’s engineering practices, tools, and workflow.

Requirements

• 5+ years of experience designing and building backend systems, APIs, or services.
• Hands-on experience with Python frameworks (FastAPI, Flask) and relational databases (Postgres).
• Proven ability to deploy and maintain applications in AWS environments.
• Strong experience with CI/CD pipelines, automated testing, and version control (GitLab/Git workflows).
• Experience with Docker and Kubernetes for containerised application deployment.
• Works collaboratively and values team success over individual credit.
• Thrives in cross-functional teams and enjoys helping others succeed.
• Highly organised, self-motivated, and able to work in a fast-moving environment.
• Strong written and verbal communication skills.
• Bonus points: Experience with frontend frameworks, particularly Next.js.
• Background in data engineering, including building or interacting with data pipelines or analytics systems.
• Knowledge of Infrastructure as Code tools (Terraform).
• Exposure to monitoring, observability, and performance optimisation for backend services.
• Passion for self-learning and personal growth, continuously improving skills and keeping up with new technologies.

Benefits

• Join a team of exceptional talent — At ZYTLYN, we hire thoughtfully and selectively, bringing together a small, focused team of high performers. We believe that a lean and empowered team moves faster, builds smarter, and achieves more. You’ll collaborate with driven colleagues who value efficiency, ownership, and impact.
• Swiss employment contract based in Geneva (for those already in Switzerland), or full remote b2b contract (for those outside of Switzerland).
• Competitive salary- adjusted for experience and market benchmarks.