Claudiu Cremeneanu
Email: me@cremeneanuclaudiu.ro LinkedIn
Senior software engineer with 10+ years of experience working on production-critical backend systems in energy, industrial automation, and large-scale document processing. I work as a B2B contractor, collaborating with existing engineering teams or taking responsibility for clearly defined technical areas.
I’m typically brought in when systems need to be stabilized, evolved, or integrated with complex legacy environments—where reliability, performance, and long-term maintainability are non-negotiable.
Expertise
Energy & Industrial Systems
Backend systems for Power System Automation (PSA), Energy Management Systems (EMS), and SCADA platforms at a leading energy technology provider. My work focused on adapting and extending core platforms for utilities and industrial clients, integrating real-time data acquisition with existing infrastructure.
I’ve designed and maintained distributed services with advanced multi-threading, rule-based data handling, and configurable logging—systems running 24/7 in production environments where downtime isn’t an option.
Document Digitization & AI
Seven years working on large-scale digitization platforms for books, newspapers, and microfilms at a major content conversion provider. These systems processed thousands of documents daily and required high throughput and operational reliability.
I contributed AI-driven processing pipelines for facial recognition, layout detection, and structured data extraction, and supported the migration from a monolithic architecture to microservices, including cross-platform modernization.
Backend Development & Architecture
Design and implementation of backend services, APIs, and integration layers with a focus on clear contracts, observability, and pragmatic architectural decisions. I help teams reason about complexity and make systems easier to operate over time.
This includes performance analysis, bottleneck removal, data-flow design, and integrating third-party or legacy systems without introducing unnecessary technical debt.
About
I’ve spent over a decade working on software systems that have to keep running— often quietly, under constraints most applications never face. My work sits at the intersection of backend engineering, system integration, and long-term platform maintenance.
In the energy sector, I focused on backend services and automation systems used by utilities. In digitization, I worked on platforms processing books, newspapers, and microfilms at scale, where consistency, throughput, and fault tolerance were critical.
My work has included extending OCR and image-processing pipelines, building AI models for tasks like facial recognition and automated layout detection, and developing internal tools such as training-data generation systems for NER using spaCy.
I also designed and implemented a shared messaging framework used across multiple microservices—custom C++ and C# services communicating via RabbitMQ rather than HTTP—providing a common foundation for service-to-service communication.
I’m language-agnostic by necessity and preference. I’ve used C++ and C# extensively for performance-critical and enterprise systems, Python for AI/ML and automation, and TypeScript/Node.js for backend services. The language is a tool; the outcome matters more.
I work primarily on a B2B contract basis, collaborating with established engineering teams, architects, and stakeholders. I’m comfortable contributing within teams as well as owning clearly scoped technical areas when needed.
Technology
Languages & Frameworks
C++ for performance-critical systems, real-time processing, and low-level integration work.
C# / .NET for enterprise backends, services, and long-lived business systems.
Python for AI/ML models, data processing pipelines, and automation.
TypeScript / Node.js for backend services, APIs, and event-driven architectures.
Experience with less common or legacy languages when required by the problem domain.
Tools & Infrastructure
Databases: SQL Server, PostgreSQL, MongoDB.
Infrastructure: Docker, RabbitMQ, Jenkins.
Development: Git, multithreading, REST APIs, protobuf, Boost.
I focus on building systems that are reliable in production, understandable by other engineers, and maintainable over time—even if that means choosing proven, “boring” solutions.
Contact
I’m available for B2B contract engagements, either to augment an existing engineering team or to take responsibility for specific technical challenges involving backend systems, integration, performance, or reliability.
If you’re looking for a senior engineer who can integrate quickly, communicate clearly, and contribute to production-grade systems, feel free to reach out.