Jecu

Family of Services & Digital Solutions

Welcome to Jecu

Discover our family of businesses and digital solutions serving both local and international markets

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Digital Solutions

Software consulting, development, GenAI solutions for global clients

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Portfolio & Projects

Real-world projects showcasing full-stack development expertise

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Electroinstal

My parents' local electrical supplies & retail shop in Galaţi, Romania

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Todos App

Full-stack task management app — React, Node.js, PostgreSQL

Open App →

Digital Solutions

Senior Software Engineering & Consulting | Based in Belfast, UK

Catalin Daniel Jecu

Catalin Daniel Jecu

Senior Software Engineer

Senior Software Engineer based in Belfast with 8+ years of experience in full-stack development. I specialize in building scalable software solutions for global clients across multiple industries. My expertise spans backend systems, frontend applications (web & mobile), and emerging technologies like GenAI and 3D web experiences. I'm particularly passionate about medical technology and robotics applications.

More About Me

🌍 Background

I am both British and Romanian — a dual national with deep roots in both countries. This gives me a unique perspective and flexibility in working across UK, EU, and international markets.

📍 Location

Based in Belfast, Northern Ireland (UK resident). I work fully remote and collaborate with clients globally. My family also runs a retail business in Galați, Romania.

🇺🇸 For US Clients

I work as an independent contractor via UK/EU company on a B2B/C2C basis. No US work authorization required — I hold a B1/B2 US visa. Ideal for US companies seeking experienced European engineering talent.

Core Competencies

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Backend Development

Scalable server-side systems, APIs, databases, cloud infrastructure. Expert in designing systems that handle complex business logic.

Node.js Python Go PostgreSQL
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Frontend Development

Modern web and mobile applications with responsive design, optimized performance, and excellent user experience.

React TypeScript React Native Vue.js
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GenAI & ML

Integration of generative AI models, machine learning pipelines, and intelligent automation solutions for enterprise applications.

LLMs RAG Fine-tuning OpenAI API
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3D & Web3

Immersive 3D web experiences, blockchain integration, and decentralized application development.

Three.js WebGL Web3.js Solidity
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Medical Device Software

Software for healthcare applications, posture monitoring systems, and medical device integration with regulatory compliance considerations.

HIPAA IoT Real-time Data Wearables
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Consulting & Architecture

Technology strategy, system design, code quality optimization, and team mentoring for startups and enterprises.

System Design Code Review DevOps Mentoring

Why Work With Me

8+ Years Experience

Proven track record in enterprise and startup environments, delivering production-grade solutions.

Full-Stack Expertise

End-to-end development from architecture to deployment, ensuring cohesive solutions.

Emerging Tech Focus

Specialization in cutting-edge technologies: GenAI, 3D web, Web3, and medical device integration.

International Experience

Worked with clients and teams across UK, US, EU, Asia, serving global markets.

Problem Solver

Approach challenges with creativity and pragmatism, finding solutions that balance innovation and practicality.

Accessible Communication

Translate complex technical concepts for non-technical stakeholders, bridging gaps in understanding.

Portfolio & Projects

Real-world applications and full-stack solutions

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Todos App

Full-stack task management application with React frontend, Node.js backend, PostgreSQL database, Docker containerization, and AWS cloud deployment.

React Node.js PostgreSQL Docker AWS GitHub Actions

Tech Stack: React.js, Node.js, Flyway migrations, Prisma ORM, AWS (RDS, ECS, S3, Route53, CloudFront)

View on GitHub
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Custom Project Consulting

Available for bespoke project development, system architecture design, and technical consulting tailored to your specific requirements.

Architecture Full-Stack Cloud Native DevOps

Specialties: System design, scalability, emerging tech integration, production deployment

Deployment & Infrastructure

I deploy production applications using modern cloud infrastructure, CI/CD pipelines, and automated deployment strategies:

🚀 CI/CD Pipeline

GitHub Actions for automated testing, building, and deployment

☁️ Cloud Hosting

AWS services: S3, CloudFront, RDS, ECS, Route53, ECR

🐳 Containerization

Docker & Docker Compose for consistent environments

🔄 Database Migrations

Flyway for version-controlled database changes

Electroinstal

My Parents' Business — Local Retail Store & Professional Maintenance Services in Galaţi

Magazin Electroinstal

JECU G. IORDAN I.I.

📍 Address

Milcov 48, bl L1, sc 3
800525 Galaţi, Romania

📞 Phone

+40 755 817 111

📧 Email

danelectroinstal@gmail.com

🕐 Hours

Mon-Fri: 08:00-18:00
Sat: 08:00-14:00
Sun: Closed

🖨️ Services

Photocopying, Xerox

A trusted family-owned business serving the Galațian community since 1999 with quality electrical supplies, sanitary products, auto insurance services (RCA & CASCO), and school supplies, paperware, library services, and photocopying/Xerox. The store caters to residential needs, while also providing professional maintenance services for hospitality facilities in the region.

Product Categories

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Electrical Equipment

Complete range of electrical supplies including distribution panels, circuit breakers, switches, outlets, cables, wires, and industrial electrical components.

Panels Breakers Cables Switches
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Sanitary Products

Bathroom and kitchen fixtures including sinks, faucets, toilets, bathtubs, pipes, fittings, and complete sanitary installation accessories.

Sinks Faucets Pipes
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Auto Insurance

Vehicle insurance services including RCA (mandatory auto liability), CASCO (full coverage), and quick assistance for auto insurance needs.

RCA CASCO Quick Service
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Lighting Solutions

Indoor and outdoor lighting including LED fixtures, spotlights, projectors, decorative lighting, and professional lighting systems.

LED Indoor Outdoor
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Tools & Accessories

Professional electrical tools, mounting accessories, connectors, conduits, and everything needed for installation and maintenance work.

Tools Conduits Connectors
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Maintenance Services

Professional ongoing electrical maintenance for hotels and hospitality facilities. Reliable service ensuring safety and operational continuity.

Hotels Maintenance Service

Visit Our Store in Galaţi

Quality electrical supplies, sanitary products, auto insurance (RCA/CASCO), and document services (Xerox/photocopying). Professional service with competitive pricing. Family-owned business serving Galați for over a decade.

🗺️ Get Directions

📍 Milcov 48, bl L1, sc 3, 800525 Galaţi, Romania | 📞 +40 755 817 111

Blog & Insights

Articles on technology, health tech, and innovations

🏃 Barefoot Running & Posture Technology

Exploring how modern wearable technology can monitor and improve posture during running. Innovations in barefoot footwear combined with real-time feedback systems.

Coming Soon

🤖 GenAI for Healthcare Applications

How generative AI is transforming medical device software, patient monitoring, and personalized health solutions. Real-world applications and future possibilities.

Coming Soon

🦴 3D Biomechanics & Scoliosis Solutions

Deep dive into 3D modeling, computer vision, and robotics for spinal health monitoring and treatment. How technology can provide real solutions for complex medical challenges.

Coming Soon

🌐 Web3 & Decentralized Health Data

Exploring blockchain technology for secure, patient-owned health data. How Web3 principles can revolutionize medical records and privacy in healthcare.

Coming Soon

🎮 3D Web Experiences for Medical Education

Creating immersive 3D environments for medical training, surgical simulation, and patient education. The future of learning in healthcare.

Coming Soon

💡 Tech Stack for Healthcare Startups

Practical guide to choosing the right technologies for launching a healthcare tech startup. Architecture, compliance, and scaling considerations.

Coming Soon

Contact

Let's talk about your project

Direct Contact

Cătălin Daniel Jecu

Friendly, direct contact for software engineering and digital delivery work.

Tell me what you're building, what is blocked, or where you need extra technical support. Based in Belfast, Northern Ireland (UK resident). Available for remote work with US clients — British & Romanian dual national, B2B/C2C engagement. No US work authorization required (B1/B2 visa holder).

Availability: Based in Belfast, Northern Ireland (UK resident). British & Romanian dual national. Available for remote work with US clients via B2B/C2C engagement. No US work authorization required (B1/B2 visa holder).

Send a message

Use the form below to open a draft email to daniel@jecu.eu. If you prefer, you can also use the direct email and phone details alongside it.