Can Acar

Seasoned software developer and software architect with over 18 years of experience. Expertise includes software modernisation and integration, backend development, microservices, event-driven architectures, AI agent-based workflows, AI-powered solutions, and the design of secure, scalable infrastructure. In addition to my technical expertise, I excel in problem-solving and communication.

Independent Software Consultant at Independent Software Consultant (2025-03 – Present)

Provided independent software development and architecture consulting across backend, integration, and enterprise application projects.

• Designed secure payment gateway and hotel reservation solutions, using Redis-based locking mechanisms to maintain transactional integrity and prevent double-booking.
• Designed and developed backend solutions using C#/.NET, SQL Server, Redis, and SignalR
• Provided technical design and architecture guidance with a focus on scalability, reliability, maintainability, and integration.
• Built an AI-powered document intelligence workflow where an LLM classifier routes receipts, invoices, and files to type-specific extraction paths (OCR + LLM structured output), with low-confidence results escalating to human review.

Senior Software Development Specialist at Pazarama (2023-12 – 2025-03)

Took ownership of the back-office architecture to simplify complex modules, significantly reducing technical debt and making daily operations smoother for both our developers and internal users.

• Developed a regional delivery project on the merchant side, leveraging Neo4j database to optimize routing and logistics. Achieved up to 90% improvement in delivery efficiency
• Engineered a Redis infrastructure package to address cache-overflow issues affecting the Cart and Campaign modules, reducing campaign leakage by 90% and improving the reliability of promotional logic.
• Provided technical guidance and mentorship to team members, sharing best practices, conducting code reviews, and fostering a collaborative and growth-oriented environment.
• Led the technical design of back-office services, establishing robust code review standards (Design/PR) and mentoring engineers to ensure high system reliability and code quality.

Senior Software Developer at TUSEB Health Institutes of Türkiye (2021-04 – 2023-12)

Designed and delivered scalable microservices that handled critical health data with high reliability, ensuring that our systems remained performant and accessible during high-demand periods.

• Engineered high-performance RESTful APIs to integrate critical software systems, resulting in refined workflows and a 25% elevation in operational efficiency.
• Devised secure authentication and authorization mechanisms for third-party integrations.
• Served as the technical focal point for API strategy; defined integration standards, reviewed critical PRs, and guided engineers through design and implementation trade-offs.

Senior Software Developer at Tuzla Public Hospital (2020-05 – 2021-04)

Translated complex project specifications into scalable technical designs and implementation plans, directly resulting in 15-20% progress in end-user application subsystems.

• Integrated third-party tools, amplifying application functionality by 10-12%.
• Collaborated with cross-functional teams to consistently meet or exceed performance expectations.
• Provided technical guidance to team members.

Senior Software Developer at Emergency Command Center (2017-10 – 2020-05)

Led the modernization of legacy systems by implementing RabbitMQ to decouple critical modules, ensuring high availability during peak emergency call volumes.

• Revamped legacy code bases, leading to 15% average reduction in operating costs and noticeable functional enhancement.
• Developed HR portal software with a modern React UI, optimizing operations and slashing processing time by about 20%.
• Designed and implemented reliable technology solutions that achieved a 92% project completion rate and significantly reduced system errors.

Software Developer at Istanbul Directorate of Health (2010-04 – 2017-10)

Software Developer at Turkish Red Crescent (2007-06 – 2010-04)

Master's Degree in Computer and Information Engineering, Information Technology – Sakarya University

Bachelor's Degree in Management Information Systems – Anadolu University