I am Tolga Celik, a passionate full stack and backend engineer with 10+ years of experience designing and delivering large-scale distributed systems, high-performance microservices, and resilient enterprise applications. I thrive on ownership, hands-on work with Java, Spring Boot, API design, and system optimization, delivering reliable, observable, and maintainable solutions used by millions. I am dedicated to code quality, scalability, and data-driven engineering decisions, and I enjoy mentoring junior developers while driving technical improvements across teams. I am ready to contribute at a senior level with a bias toward engineering excellence, cross-team collaboration, and long-term design thinking, while continuing to grow my technical leadership and impact across product domains.

Tolga Celik

I am Tolga Celik, a passionate full stack and backend engineer with 10+ years of experience designing and delivering large-scale distributed systems, high-performance microservices, and resilient enterprise applications. I thrive on ownership, hands-on work with Java, Spring Boot, API design, and system optimization, delivering reliable, observable, and maintainable solutions used by millions. I am dedicated to code quality, scalability, and data-driven engineering decisions, and I enjoy mentoring junior developers while driving technical improvements across teams. I am ready to contribute at a senior level with a bias toward engineering excellence, cross-team collaboration, and long-term design thinking, while continuing to grow my technical leadership and impact across product domains.

Available to hire

I am Tolga Celik, a passionate full stack and backend engineer with 10+ years of experience designing and delivering large-scale distributed systems, high-performance microservices, and resilient enterprise applications. I thrive on ownership, hands-on work with Java, Spring Boot, API design, and system optimization, delivering reliable, observable, and maintainable solutions used by millions. I am dedicated to code quality, scalability, and data-driven engineering decisions, and I enjoy mentoring junior developers while driving technical improvements across teams.

I am ready to contribute at a senior level with a bias toward engineering excellence, cross-team collaboration, and long-term design thinking, while continuing to grow my technical leadership and impact across product domains.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Work Experience

Full Stack Developer at Fidelity Investments
May 1, 2022 - Present
Led architectural discussions and designed end-to-end APIs using Java, Spring, and custom frameworks, and established Swagger documentation standards. Modernized legacy services into scalable microservices for easier deployments and improved maintainability. Delivered modular Micro Frontend applications and managed the full lifecycle from design and implementation to testing, production monitoring, and build optimization. Improved reliability and performance of Angular applications through refactoring and feature development. Mentored junior engineers and supported team technical upskilling.
Software Developer at Softtech
December 1, 2020 - April 1, 2022
Led delivery of a Kafka-based notification platform for a Turkish Bank, managing requirements gathering, implementation, deployment, and 24/7 production support. Built scalable, fault-tolerant event-driven systems using CQRS, enabling the platform to process millions of daily messages reliably. Developed full-stack features using Java and Angular, improving user experience and system responsiveness. Implemented monitoring and observability with Datadog and Grafana to reduce detection and response time.
Software Development Engineer at Amadeus
December 1, 2014 - December 1, 2020
Designed and deployed enterprise backend services using Java, Spring, Spring Boot, and Hibernate for high availability production systems. Improved SQL performance via indexing strategy improvements and optimized execution plans, reducing latency and load. Delivered enhancements, features, and fixes across backend APIs and AngularJS-based frontend components.

Education

Master's degree at Altinbas University
January 1, 2015 - January 1, 2018
Bachelor's degree at Karadeniz Technical University
January 1, 2008 - January 1, 2013

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Professional Services