I’m a freelance software developer specializing in Java, Spring Boot, and distributed systems. With over 15 years of experience—including 5 years as a Technical Lead at Cargill and recent freelance projects for governmental institutions—I combine deep technical expertise with strong leadership skills. My focus is on building scalable, high-performance platforms that handle mission-critical transactions in industries such as finance, logistics, and public sector services. I bring proven experience with PostgreSQL, Redis, Apache Kafka, RabbitMQ, ActiveMQ, and modern software architecture practices. What sets me apart is my ability to bridge business and technology: I not only design and implement complex systems but also mentor teams, improve processes, and align engineering outcomes with strategic goals. Clients value my reliability, clear communication, and hands-on approach to delivering high-quality results. If you are looking for a developer who can quickly understand your domain, integrate into your team, and deliver scalable, secure, and future-proof solutions, I’d be happy to collaborate.

M. Ergin Sarikaya

I’m a freelance software developer specializing in Java, Spring Boot, and distributed systems. With over 15 years of experience—including 5 years as a Technical Lead at Cargill and recent freelance projects for governmental institutions—I combine deep technical expertise with strong leadership skills. My focus is on building scalable, high-performance platforms that handle mission-critical transactions in industries such as finance, logistics, and public sector services. I bring proven experience with PostgreSQL, Redis, Apache Kafka, RabbitMQ, ActiveMQ, and modern software architecture practices. What sets me apart is my ability to bridge business and technology: I not only design and implement complex systems but also mentor teams, improve processes, and align engineering outcomes with strategic goals. Clients value my reliability, clear communication, and hands-on approach to delivering high-quality results. If you are looking for a developer who can quickly understand your domain, integrate into your team, and deliver scalable, secure, and future-proof solutions, I’d be happy to collaborate.

Available to hire

I’m a freelance software developer specializing in Java, Spring Boot, and distributed systems. With over 15 years of experience—including 5 years as a Technical Lead at Cargill and recent freelance projects for governmental institutions—I combine deep technical expertise with strong leadership skills.

My focus is on building scalable, high-performance platforms that handle mission-critical transactions in industries such as finance, logistics, and public sector services. I bring proven experience with PostgreSQL, Redis, Apache Kafka, RabbitMQ, ActiveMQ, and modern software architecture practices.

What sets me apart is my ability to bridge business and technology: I not only design and implement complex systems but also mentor teams, improve processes, and align engineering outcomes with strategic goals. Clients value my reliability, clear communication, and hands-on approach to delivering high-quality results.

If you are looking for a developer who can quickly understand your domain, integrate into your team, and deliver scalable, secure, and future-proof solutions, I’d be happy to collaborate.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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Language

English
Fluent

Work Experience

Freelancer Senior Software Engineer at Ministerie Binnenlandse Zaken
September 1, 2025 - August 16, 2025
Designed and implemented backend solutions for seamless communication between government agencies, focusing on data integrity and security. Provided expert advice on software architecture and design patterns, supported teams in making informed, goal-oriented decisions. Conducted code reviews and implemented testing frameworks for quality assurance and adherence to coding standards.
Technical Team Lead – Software Engineering at Cargill, The Netherlands
March 1, 2025 - August 16, 2025
Led a team of 10 engineers, providing strategic direction and promoting professional development according to industry best practices. Designed and implemented distributed systems to improve efficiency and product delivery. Collaborated with cross-functional teams to deliver high-quality results and enhanced customer experience. Created robust APIs and optimized data processing solutions for seamless integrations.
Senior Software Engineer at Cargill, The Netherlands
August 1, 2017 - January 1, 2020
Developed and maintained web applications and APIs, providing technical consultation for internal teams and stakeholders. Implemented CI/CD pipelines to streamline development and deployment processes, reducing delivery time.
Simulation Software Engineer at Procter & Gamble, The Netherlands
January 1, 2017 - August 16, 2025
Designed and developed simulation software to optimize production processes, using strong analytical and problem-solving skills. Collaborated with cross-functional teams to ensure technical integrity and compliance with industry standards during project execution.
Software Engineer at Crocs, The Netherlands
January 1, 2012 - August 16, 2025
Developed in-house ERP software to optimize logistics and warehouse operations, improving inventory management and planning processes.

Education

Master at Georgia Institute of Technology, USA
January 1, 2018 - January 1, 2020
Master at Technische Universiteit Eindhoven, The Netherlands
January 1, 2008 - January 1, 2010
Bachelor at Bilkent University, Turkey
January 1, 2004 - January 1, 2008

Qualifications

AWS Certified Developer Associate
January 11, 2030 - August 16, 2025
Oracle Certified Associate Java SE Programmer
January 11, 2030 - August 16, 2025
TU/e Talent based Scholarship
January 1, 2008 - January 1, 2010
Full Merit scholarship, Bilkent University
January 1, 2004 - January 1, 2008

Industry Experience

Government, Software & Internet, Manufacturing, Retail, Consumer Goods, Professional Services

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
See more