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I'm Seyit, a Backend Developer specializing in Spring Boot, React, TypeScript and AWS serverless technologies. I design RESTful APIs and build scalable cloud-based applications using Node.js and MongoDB within microservice architectures, collaborating with cross-functional teams to deliver reliable, high-performance software.…

Seyit Süleyman Tekin

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

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I'm Seyit, a Backend Developer specializing in Spring Boot, React, TypeScript and AWS serverless technologies. I design RESTful APIs and build scalable cloud-based applications using Node.js and MongoDB within microservice architectures, collaborating with cross-functional teams to deliver reliable, high-performance software.…

Available to hire

Istanbul, Turkey

I’m Seyit, a Backend Developer specializing in Spring Boot, React, TypeScript and AWS serverless technologies.

I design RESTful APIs and build scalable cloud-based applications using Node.js and MongoDB within microservice architectures, collaborating with cross-functional teams to deliver reliable, high-performance software.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Turkish

Fluent

Japanese

Advanced

Work Experience

Backend Developer at Yolda Logistics

December 1, 2024 - October 1, 2025

Designing and implementing RESTful APIs within a microservices architecture using Java and TypeScript and MongoDB, deploying on AWS serverless infrastructure. Leveraging AWS Lambda, API Gateway, DynamoDB, and CodePipeline to build scalable, event-driven workflows with automated CI/CD. Building and maintaining React-based front-end components integrated with scalable backend services for improved performance and user experience. Configuring, testing, and debugging serverless functions locally using Docker and AWS SAM; monitoring performance and logs via Amazon CloudWatch.

Short-Term Intern Software Developer at InterTech

July 1, 2023 - October 1, 2023

Strengthened skills in AI, SQL databases, data analysis, and Python frameworks by contributing to a large-scale data processing project involving over 200 unique IDs. Worked closely with a 16-member Agile team, improving delivery efficiency through sprint-based collaboration and the development of 20+ automated testing scripts.

Short-Term Intern Backend Developer at Pragma

April 1, 2023 - July 1, 2023

Developed and maintained backend features in Java and .NET for the Jolly Joker platform, enhancing CRUD operations, improving API reliability. Contributing to higher code quality through active participation in 30+ team code reviews and collaborative debugging sessions.

Long-Term Intern Backend Developer at Fitty

June 1, 2022 - February 28, 2023

Built, tested, and optimized Spring-based backend systems using Java and MongoDB, improving scalability, query performance. Overall system robustness by applying design patterns, refactoring data access layers, and implementing efficient data structures.