ZYTLYN Technologies

Senior Back-End Engineer, Python

ZYTLYN Technologies

full-time

Posted on:

Location Type: Hybrid

Location: Geneva • Switzerland

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Job Level

Senior

Tech Stack

AWSDockerFlaskJavaScriptKubernetesNext.jsPostgresPythonTerraform

About the role

  • 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.
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
FastAPIFlaskPostgresAWSCI/CDGitLab CI/CDDockerKubernetesTerraformdata engineering
Soft Skills
collaborationmentoringteam successorganisationself-motivationcommunicationcross-functional teamworkinfluenceimprovementpassion for learning