I’m Fahmi Ben Khalifa, a senior full-stack developer based in Berlin, where I build and deliver reliable REST APIs and clean application experiences across web and mobile. I enjoy turning product requirements into well-structured backend services and pixel-perfect UIs using TypeScript, React, and React Native, and I also have hands-on exposure to AI—ranging from vision workflows to LLM-driven features. Earlier in my career, I co-founded and led a small engineering team, focusing on stable delivery, documentation, and automation with CI/CD and Docker. I’ve worked on domains like POS, employee management, fintech/crypto systems, and live commerce, and I bring a strong mindset for code quality, monitoring, and security checks. Outside pure development, I’m enthusiastic about using AI to accelerate workflows and help teams generate useful outputs from real-world inputs.

FAHMI BEN KHALIFA

I’m Fahmi Ben Khalifa, a senior full-stack developer based in Berlin, where I build and deliver reliable REST APIs and clean application experiences across web and mobile. I enjoy turning product requirements into well-structured backend services and pixel-perfect UIs using TypeScript, React, and React Native, and I also have hands-on exposure to AI—ranging from vision workflows to LLM-driven features. Earlier in my career, I co-founded and led a small engineering team, focusing on stable delivery, documentation, and automation with CI/CD and Docker. I’ve worked on domains like POS, employee management, fintech/crypto systems, and live commerce, and I bring a strong mindset for code quality, monitoring, and security checks. Outside pure development, I’m enthusiastic about using AI to accelerate workflows and help teams generate useful outputs from real-world inputs.

Available to hire

I’m Fahmi Ben Khalifa, a senior full-stack developer based in Berlin, where I build and deliver reliable REST APIs and clean application experiences across web and mobile. I enjoy turning product requirements into well-structured backend services and pixel-perfect UIs using TypeScript, React, and React Native, and I also have hands-on exposure to AI—ranging from vision workflows to LLM-driven features.

Earlier in my career, I co-founded and led a small engineering team, focusing on stable delivery, documentation, and automation with CI/CD and Docker. I’ve worked on domains like POS, employee management, fintech/crypto systems, and live commerce, and I bring a strong mindset for code quality, monitoring, and security checks. Outside pure development, I’m enthusiastic about using AI to accelerate workflows and help teams generate useful outputs from real-world inputs.

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Experience Level

Expert
Expert
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Expert
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Intermediate
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Language

English
Fluent
French
Advanced
Arabic
Advanced

Work Experience

Senior Full Stack Developer at Gavel Gmbh (YC W22)
April 1, 2022 - Present
Designed and implemented RESTful services and modules using NodeJS and NestJS. Developed web and mobile features with ReactJS and React Native. Worked with AI capabilities including image classification/object detection and LLM-based approaches. Built and maintained production-grade backend and frontend components with TypeScript-based stacks, collaborating to ensure maintainability and quality.
Co-Founder & CTO at Aurax
February 1, 2018 - April 1, 2022
Co-led a team of four engineers to deliver stable, clean, and well-documented solutions for clients. Designed and wrote NodeJS micro-services for company products. Automated deployments using GitLab CI/CD and Docker, and set up monitoring for micro-services with Prometheus and Grafana. Supported end-to-end development across mobile and backend using a TypeScript and React Native oriented stack.
Backend Developer at BitDinars
December 1, 2017 - February 1, 2018
Owned API design and development of RESTful services for a crypto-currency system. Deployed the solution on Tunisian Poste Cloud. Implemented monitoring using the ELK stack and performed routine security checks to maintain reliability and reduce risk. Worked across backend systems with supporting technologies in a security-conscious environment.
Penetration Tester at SIFARIS Tunisie
May 1, 2016 - December 1, 2017
Performed penetration testing activities to evaluate security posture and identify vulnerabilities. Conducted security checks as part of broader assessment and improvement efforts.

Education

Bachelor's degree in computer science at Bizerte University Of Science
September 1, 2012 - June 1, 2015

Qualifications

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Industry Experience

Software & Internet, Computers & Electronics, Financial Services, Government, Media & Entertainment, Professional Services