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Hi, I’m Hatem Sfar, a Software Engineer based in Cologne, Germany, with 4+ years of experience delivering scalable backend and full-stack solutions using Java, Spring Boot, React, and AWS. I enjoy solving complex problems, shipping production-ready systems in Agile teams, and driving performance improvements. I’m passionate about microservices, cloud deployments, and building SaaS platforms that scale. Currently I lead backend and full-stack projects at OKIT GmbH, contribute to AI-enabled features, and continuously expand my skills in cloud deployment, microservices, and automated testing.…Hi, I’m Hatem Sfar, a Software Engineer based in Cologne, Germany, with 4+ years of experience delivering scalable backend and full-stack solutions using Java, Spring Boot, React, and AWS. I enjoy solving complex problems, shipping production-ready systems in Agile teams, and driving performance improvements. I’m passionate about microservices, cloud deployments, and building SaaS platforms that scale. Currently I lead backend and full-stack projects at OKIT GmbH, contribute to AI-enabled features, and continuously expand my skills in cloud deployment, microservices, and automated testing.

Hatem Sfar

Full Stack Developer, Back-End Developer, Web Developer, +2

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Hi, I’m Hatem Sfar, a Software Engineer based in Cologne, Germany, with 4+ years of experience delivering scalable backend and full-stack solutions using Java, Spring Boot, React, and AWS. I enjoy solving complex problems, shipping production-ready systems in Agile teams, and driving performance improvements. I’m passionate about microservices, cloud deployments, and building SaaS platforms that scale. Currently I lead backend and full-stack projects at OKIT GmbH, contribute to AI-enabled features, and continuously expand my skills in cloud deployment, microservices, and automated testing.…Hi, I’m Hatem Sfar, a Software Engineer based in Cologne, Germany, with 4+ years of experience delivering scalable backend and full-stack solutions using Java, Spring Boot, React, and AWS. I enjoy solving complex problems, shipping production-ready systems in Agile teams, and driving performance improvements. I’m passionate about microservices, cloud deployments, and building SaaS platforms that scale. Currently I lead backend and full-stack projects at OKIT GmbH, contribute to AI-enabled features, and continuously expand my skills in cloud deployment, microservices, and automated testing.

Available to hire

Hi, I’m Hatem Sfar, a Software Engineer based in Cologne, Germany, with 4+ years of experience delivering scalable backend and full-stack solutions using Java, Spring Boot, React, and AWS. I enjoy solving complex problems, shipping production-ready systems in Agile teams, and driving performance improvements. I’m passionate about microservices, cloud deployments, and building SaaS platforms that scale.

Currently I lead backend and full-stack projects at OKIT GmbH, contribute to AI-enabled features, and continuously expand my skills in cloud deployment, microservices, and automated testing.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

German

Beginner

French

Intermediate

Arabic

Fluent

Work Experience

Software Engineer at OKIT GmbH

January 1, 2023 - Present

Lead developer on 3 major client projects, delivering full-stack web and mobile solutions. Built scalable full-stack applications using React.js, Express.js, and PostgreSQL. Designed and developed Java Spring Boot microservices, improving backend transaction performance by ~40% across projects serving 50,000+ daily users. Developed a React Native mobile application from architecture to deployment. Contributed to AI-enhanced decision-making features. Created 15+ automated test cases using Python, increasing test coverage to 90% within one week. Collaborated with product, QA, and design teams in Agile/SCRUM.

Software Engineer at StartNow

September 1, 2021 - November 1, 2022

Developed a full-stack SaaS recruitment platform using React.js, Node.js, and MongoDB. Implemented AI-based matching algorithms to connect recruiters with relevant candidates. Built an integrated live video interview feature within the platform. Automated job postings to Facebook using Graph API. Developed an admin dashboard for managing users, CVs, job offers, and interviews. Deployed and maintained services using Docker, AWS, and GitLab CI.

Software Engineer Intern at Tunisia - Multiple Companies

January 1, 2019 - August 1, 2021

Developed backend and mobile applications using Java, Spring Boot, React Native, and Node.js. Worked with microservices architectures and Agile/SCRUM teams. Strengthened algorithmic problem-solving and performance optimization skills using Java.