Description

I am an experienced backend software engineer (~10 years) living in Romania, after studying and working in Copenhagen for 8 years. My main programming language is Javascript/Typescript.

I have extensive experience with system integration, data & systems migration, legacy codebases, data pipelines, ETL, ELT, navigating through complex environments with poor documentation, N8N automations, LLM wrappers, RAG systems, MCP & CLI tools for LLMs.

The most extensive system I've worked on was a migration for a telecom company of a legacy database having tens of integrated live systems as data producers and/or consumers, with zero down-time. I am naturally focused on data integrity, availability, security, robustness.

Over time, I've worked mostly in-office bridging the gap between the business & engineering departments, I've been leading small remote teams, and more recently became a remote freelancer myself - helping businesses audit their internal systems, architect the target solutions together, migrate to newer or custom platforms if necessary, integrate all platforms, automate repetitive tasks.

Languages

English
Native or bilingual
Romanian
Native or bilingual
Danish
Basic

Workplace preferences

Remote only

Primarily works remotely

UpNorth Development
Freelance Software/Data Engineer - N8N, LLMs, Node.js
September 2024 - Today (1 year and 9 months)
Suceava, Romania
• - Led full-cycle solutions for clients, covering product discovery (problem framing, requirements, success metrics), system design, build, production deployment, and ongoing monitoring.
• - Built production chatbots and conversational workflows (WhatsApp/Telegram and web chat), integrating LLM capabilities where they added measurable value (automation, routing, summarization, content generation, RAG, call-to-action extraction).
• - Delivered data migration & systems integration, business processes automation (CRMs, country-specific accounting software, Google Workspace, communication platforms, Notion and various internal tools), reducing manual operations and improving data consistency across systems.
• - Implemented LLM-enabled components (retrieval/search, prompt/tool orchestration, document data extraction with AI/OCR, workflow automation) with attention to reliability, cost control, and safe handling of customer data.
• - Tech stack: Node.js, TypeScript, PostgreSQL, AWS, GCP, Vertex AI, OpenAI, Claude Code, Pinecone, N8N.
n8n Node.js JavaScript OpenAI Google cloud
Telia (Telecommunications company)
Senior Backend Engineer - Data migration
TELECOMMUNICATIONS
March 2022 - March 2023 (1 year)
Klausenburg, Romania
• - Led a migration from a legacy system (20+ yo monolith) to a more recently developed target system (divided into more components, running as microservices on AWS).
• - Conducted data analysis, investigated existing business logic, helped PO to define new business requirements, plan tasks, timelines etc.
• - Synchronized with several teams involved in the process as data producers.
• - Continuously offered support for several consumer systems to integrate with the target system, understand & use new data structures.
• - Worked mainly with Node.js, Typescript, PostgreSQL, Oracle SQL, AWS, on-premise systems.
Node.js Typescript PostgreSQL Oracle AWS
Sennos (Surveys app)
Lead Engineer, Partner
May 2021 - October 2021 (5 months)
Copenhagen, Denmark
• - Collaborated with all product stakeholders to define system requirements.
• - Designed and implemented a scalable backend infrastructure in Node.js (on AWS) + microservices on Firebase+Firestore.
• - Set up infrastructure (EC2, ALB, S3, RDS with PostgreSQL) & CI/CD on AWS, from GitLab repo.
Firebase AWS Node.js PostgreSQL Git